Rhode Island
Technical Reference Manual
for Estimating Savings from Energy Efficiency Measures
2012 Program Year
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
ii
Rhode Island
Technical Reference Manual
for Estimating Savings from Energy Efficiency Measures
2012 Program Year
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
iii
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
iv
Rhode Island TRM
Appendices
Table of Contents
TABLE OF CONTENTS ..................................................................................................................................... 5
LIST OF TABLES................................................................................................................................................ 8
INTRODUCTION.............................................................................................................................................. 11
THE TRM IN THE CONTEXT OF ENERGY EFFICIENCY PROGRAMS.................................................. 12
OVERVIEW ....................................................................................................................................................... 12
PLANNING AND REPORTING .............................................................................................................................. 12
UPDATES TO PROGRAM ADMINISTRATOR TRACKING SYSTEMS .......................................................................... 12
EVOLUTION OF PROGRAM AND MEASURE COST EFFECTIVENESS ANALYSIS TOOLS ............................................. 13
EVALUATION, MEASUREMENT AND VERIFICATION ............................................................................................ 13
QUALITY CONTROL .......................................................................................................................................... 13
TRM UPDATE PROCESS................................................................................................................................. 14
OVERVIEW ....................................................................................................................................................... 14
KEY STAKEHOLDERS AND RESPONSIBILITIES ..................................................................................................... 14
TRM UPDATE CYCLE ....................................................................................................................................... 15
MEASURE CHARACTERIZATION STRUCTURE ....................................................................................... 16
IMPACT FACTORS FOR CALCULATING ADJUSTED GROSS AND NET SAVINGS ............................. 33
TYPES OF IMPACT FACTORS .............................................................................................................................. 34
STANDARD NET–TO–GROSS FORMULAS ............................................................................................................ 36
RESIDENTIAL ELECTRIC EFFICIENCY MEASURES............................................................................... 38
LIGHTING – CFL BULBS ................................................................................................................................... 39
LIGHTING – INDOOR FIXTURES .......................................................................................................................... 42
LIGHTING – OUTDOOR FIXTURES ...................................................................................................................... 44
LIGHTING – TORCHIERES .................................................................................................................................. 46
LIGHTING – LED LIGHTING .............................................................................................................................. 48
PRODUCTS – COMPUTER MONITORS .................................................................................................................. 50
PRODUCTS – COMPUTERS ................................................................................................................................. 52
PRODUCTS – ROOM AIR CLEANER ..................................................................................................................... 54
PRODUCTS – SMART STRIPS .............................................................................................................................. 56
PRODUCTS – TELEVISIONS ................................................................................................................................ 58
PRODUCTS – REFRIGERATORS (REBATE) ........................................................................................................... 60
PRODUCTS – REFRIGERATORS (RETROFIT)......................................................................................................... 62
PRODUCTS – FREEZERS (REBATE) ..................................................................................................................... 64
PRODUCTS – FREEZERS (RETROFIT)................................................................................................................... 66
PRODUCTS – REFRIGERATOR/FREEZER RECYCLING ........................................................................................... 68
PRODUCTS – APPLIANCE REMOVAL ................................................................................................................... 70
PRODUCTS – POOL PUMPS ................................................................................................................................. 72
BEHAVIOR – BASIC EDUCATIONAL MEASURES .................................................................................................. 74
HVAC – CENTRAL AIR CONDITIONER ............................................................................................................... 76
HVAC – AIR SOURCE HEAT PUMP .................................................................................................................... 78
HVAC – DUCTLESS MINISPLIT HEAT PUMP ...................................................................................................... 80
HVAC – DUCTLESS MINISPLIT AIR CONDITIONER ............................................................................................ 82
HVAC – CENTRAL AC QUALITY INSTALLATION VERIFICATION (QIV)............................................................... 84
HVAC – HEAT PUMP QUALITY INSTALLATION VERIFICATION (QIV) ................................................................. 86
HVAC – CENTRAL AC DIGITAL CHECK-UP/TUNE–UP ....................................................................................... 88
HVAC – HEAT PUMP DIGITAL CHECK-UP/TUNE-UP........................................................................................... 90
HVAC – DUCT SEALING ................................................................................................................................... 92
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Appendices
HVAC – DOWN SIZE ½ TON ............................................................................................................................. 94
HVAC – RIGHT SIZING ..................................................................................................................................... 96
HVAC – EARLY REPLACEMENT OF CENTRAL AC OR HEAT PUMP UNIT.............................................................. 98
HVAC – QUALITY INSTALLATION WITH DUCT MODIFICATION......................................................................... 100
HVAC – TXV VALVE REPLACEMENT OF FIXED ORIFICE ................................................................................. 102
HVAC – FURNACE FAN MOTORS .................................................................................................................... 104
HVAC – ROOM AC (REBATE) ........................................................................................................................ 106
HVAC – WINDOW AC (RETROFIT) ................................................................................................................. 108
HVAC – WIFI ENABLED THERMOSTAT WITH COOLING ................................................................................... 110
HVAC – WEATHERIZATION (ELECTRIC).......................................................................................................... 112
HVAC – WEATHERIZATION (OIL AND OTHER FOSSIL FUELS) ........................................................................... 114
HVAC – HEATING SYSTEM (REBATE)............................................................................................................. 116
HVAC – HEATING SYSTEM (RETROFIT) .......................................................................................................... 118
HVAC/HOT WATER – ENERGY STAR® HOMES HEATING, COOLING, AND DHW MEASURES ......................... 120
HOT WATER – DHW MEASURES ..................................................................................................................... 122
HOT WATER – DISHWASHERS ......................................................................................................................... 124
HOT WATER – WATERBED MATTRESS REPLACEMENT ..................................................................................... 126
MF LIGHTING – EW FIXTURES AND CFLS ....................................................................................................... 128
MF PRODUCTS – EW REFRIGERATORS AND FREEZERS ..................................................................................... 130
MF HVAC – EW INSULATION (WALLS, ROOF, FLOOR) ................................................................................... 132
MF HVAC – EW AIR SEALING ....................................................................................................................... 134
MF HVAC – EW PROGRAMMABLE THERMOSTATS ......................................................................................... 136
MF HVAC – EW HEAT PUMP T UNE-UP .......................................................................................................... 138
MF DHW – EW DHW (SHOWERHEADS AND AERATORS) ................................................................................ 140
MF HOT WATER – EW DHW (T ANK AND PIPE WRAP) .................................................................................... 142
COMMERCIAL AND INDUSTRIAL ELECTRIC EFFICIENCY MEASURES.......................................... 145
LIGHTING – PERFORMANCE LIGHTING ............................................................................................................. 146
LIGHTING – LIGHTING SYSTEMS ...................................................................................................................... 149
LIGHTING – LIGHTING CONTROLS ................................................................................................................... 153
LIGHTING – FREEZER/COOLER LEDS .............................................................................................................. 155
HVAC – SINGLE PACKAGE AND SPLIT SYSTEM UNITARY AIR CONDITIONERS .................................................. 157
HVAC – SINGLE PACKAGE AND SPLIT SYSTEM HEAT PUMP SYSTEMS .............................................................. 160
HVAC – DUAL ENTHALPY ECONOMIZER CONTROLS ....................................................................................... 164
HVAC – DEMAND CONTROL VENTILATION..................................................................................................... 166
HVAC – ECM FAN MOTORS .......................................................................................................................... 168
HVAC – ENERGY MANAGEMENT SYSTEM ...................................................................................................... 170
HVAC – HIGH EFFICIENCY CHILLER ............................................................................................................... 172
HVAC – HOTEL OCCUPANCY SENSORS ........................................................................................................... 175
REFRIGERATION – DOOR HEATER CONTROLS .................................................................................................. 177
REFRIGERATION – NOVELTY COOLER SHUTOFF ............................................................................................... 179
REFRIGERATION – ECM EVAPORATOR FAN MOTORS FOR WALK–IN COOLERS AND FREEZERS .......................... 181
REFRIGERATION – CASE MOTOR REPLACEMENT .............................................................................................. 183
REFRIGERATION – COOLER NIGHT COVERS ..................................................................................................... 185
REFRIGERATION – ELECTRONIC DEFROST CONTROL ........................................................................................ 187
REFRIGERATION – EVAPORATOR FAN CONTROLS ............................................................................................ 189
REFRIGERATION – VENDING MISERS ............................................................................................................... 191
FOOD SERVICE – COMMERCIAL ELECTRIC STEAM COOKER .............................................................................. 193
FOOD SERVICE – COMMERCIAL ELECTRIC GRIDDLE......................................................................................... 195
FOOD SERVICE – COMMERCIAL ELECTRIC OVENS ............................................................................................ 197
COMPRESSED AIR – HIGH EFFICIENCY AIR COMPRESSORS ............................................................................... 199
COMPRESSED AIR – REFRIGERATED AIR DRYERS ............................................................................................ 201
COMPRESSED AIR – LOW PRESSURE DROP FILTERS ......................................................................................... 203
COMPRESSED AIR – ZERO LOSS CONDENSATE DRAINS .................................................................................... 205
MOTORS/DRIVES – VARIABLE FREQUENCY DRIVES ......................................................................................... 207
CUSTOM MEASURES ....................................................................................................................................... 210
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Appendices
RESIDENTIAL GAS EFFICIENCY MEASURES......................................................................................... 213
HVAC – BOILERS .......................................................................................................................................... 214
HVAC – BOILER RESET CONTROLS ................................................................................................................ 216
HVAC – PROGRAMMABLE THERMOSTATS ...................................................................................................... 218
HVAC – FURNACES ....................................................................................................................................... 220
HVAC – HEAT RECOVERY VENTILATOR ......................................................................................................... 222
HVAC – HEATING SYSTEM REPLACEMENT ..................................................................................................... 224
HVAC – WEATHERIZATION ............................................................................................................................ 226
HVAC – COMBO WATER HEATER/BOILER ...................................................................................................... 228
HOT WATER – WATER HEATERS ..................................................................................................................... 230
MF HVAC – EW SHELL INSULATION.............................................................................................................. 233
MF HVAC – EW OTHER INSULATION ............................................................................................................. 235
MF HVAC – EW AIR SEALING ....................................................................................................................... 237
MF HVAC – EW PROGRAMMABLE THERMOSTATS ......................................................................................... 239
MF HOT WATER – EW DHW MEASURES ........................................................................................................ 241
COMMERCIAL AND INDUSTRIAL GAS EFFICIENCY MEASURES...................................................... 243
HVAC – BOILERS .......................................................................................................................................... 244
HVAC – BOILER RESET CONTROLS ................................................................................................................ 246
HVAC – PROGRAMMABLE THERMOSTATS ...................................................................................................... 248
HVAC – FURNACES ....................................................................................................................................... 250
HVAC – INFRARED HEATER ........................................................................................................................... 252
HVAC – COMBO WATER HEATER/BOILER ...................................................................................................... 254
HVAC/HOT WATER – PIPE INSULATION.......................................................................................................... 256
HOT WATER – WATER HEATERS ..................................................................................................................... 258
HOT WATER – PRE-RINSE SPRAY VALVE ........................................................................................................ 260
HOT WATER – STEAM TRAPS .......................................................................................................................... 262
HOT WATER – LOW-FLOW SHOWER HEADS .................................................................................................... 264
HOT WATER – FAUCET AERATOR ................................................................................................................... 266
FOOD SERVICE – COMMERCIAL GAS-FIRED OVENS .......................................................................................... 268
FOOD SERVICE – COMMERCIAL GRIDDLE ........................................................................................................ 270
FOOD SERVICE – COMMERCIAL FRYER ............................................................................................................ 272
FOOD SERVICE – COMMERCIAL STEAMER ....................................................................................................... 274
CUSTOM MEASURES ....................................................................................................................................... 276
APPENDICES .................................................................................................................................................. 279
APPENDIX A: COMMON LOOKUP T ABLES ........................................................................................................ 280
APPENDIX B: NET TO GROSS IMPACT FACTORS................................................................................................ 285
APPENDIX C: NON-ENERGY IMPACTS .............................................................................................................. 295
APPENDIX D: T ABLE OF REFERENCED DOCUMENTS ......................................................................................... 307
APPENDIX E: ACRONYMS ................................................................................................................................ 314
APPENDIX F: GLOSSARY ................................................................................................................................. 315
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Appendices
List of Tables
Table 1: Savings for Residential CFL Bulbs....................................................................................... 39
Table 2: Savings for Computers.......................................................................................................... 52
Table 3: Savings for Refrigerator/Freezer Recycling......................................................................... 68
Table 4: Savings for Pool Pumps ........................................................................................................ 72
Table 5: Savings for Residential CAC System.................................................................................... 76
Table 6: Savings for Residential HP System....................................................................................... 78
Table 7: Savings for Residential Ductless MS HP System ................................................................. 80
Table 8: Savings for Residential Ductless MS AC System ................................................................. 82
Table 9: Savings for Residential Furnace Fan Motors..................................................................... 104
Table 10: Electric Savings for Residential Heating System (Rebate)............................................... 116
Table 11: Oil/Propane Savings for Residential Heating System (Rebate) ....................................... 117
Table 12: Electric Savings for Oil Heating System Replacement .................................................... 118
Table 13: Electric Savings for DHW Measures ................................................................................ 122
Table 15: Baseline Efficiency Requirements for C&I Unitary Air Conditioners ............................ 158
Table 16: Baseline Efficiency Requirements for C&I Heat Pumps ................................................. 162
Table 17: ECM Fan Motor Savings Factors ..................................................................................... 168
Table 18: Baseline Efficiency Requirements for C&I Chillers ........................................................ 173
Table 19: Cooling Hours for C&I Chillers ....................................................................................... 173
Table 20: Savings Factors for Cooler Night Covers ......................................................................... 185
Table 21: Savings Factors for Vending Misers ................................................................................. 191
Table 22: Savings for C&I Commercial Electric Ovens................................................................... 197
Table 23: Savings Factors for C&I Air Compressors (kW/HP)....................................................... 199
Table 24: Savings Factors for C&I Air Dryers (kW/CFM) ............................................................. 201
Table 25: Savings Factors for C&I VFDs (kWh/HP and kW/HP)................................................... 208
Table 26: Savings for Residential Gas Boilers .................................................................................. 214
Table 27: Savings for Residential Gas Furnaces .............................................................................. 220
Table 28: Savings for Residential Combo Water Heater/Boilers..................................................... 228
Table 29: Savings for Residential Gas Water Heaters ..................................................................... 231
Table 30: Measure Lives for Residential Water Heaters ................................................................. 231
Table 31: Savings for EW Other Insulation ..................................................................................... 235
Table 32: Savings for EW Thermostats ............................................................................................ 239
Table 33: Savings for EW DHW Measures ...................................................................................... 241
Table 34: Savings for C&I Boilers .................................................................................................... 244
Table 35: Baseline Efficiency Requirements for Gas Boilers ........................................................... 245
Table 36: Savings for C&I Furnaces ................................................................................................ 250
Table 37: Baseline Efficiency Requirements for C&I Gas Furnaces ............................................... 250
Table 38: Savings for C&I Combo Water Heater/Boiler ................................................................. 254
Table 39: Savings for Pipe Insulation ............................................................................................... 256
Table 40: Savings for C&I Water Heaters ....................................................................................... 258
Table 41: Measure Lives for Residential Water Heaters ................................................................. 259
Table 42: Savings for Commercial Ovens......................................................................................... 268
Table 43: Suggested C&I Lighting Hours by Building Type ........................................................... 280
Table 44: Lighting Power Densities Using the Building Area Method (LPDBASE,i) ......................... 280
Table 45: Lighting Power Densities Using the Space-by-Space Method (LPDBASE,i) ....................... 282
Table 46: C&I Electric Measure Non-Energy Impacts .................................................................... 284
Table 47: NTG Factors for Residential Electric Efficiency Programs............................................. 285
Table 48: NTG Factors for C&I Electric Efficiency Programs ....................................................... 288
Table 49: NTG Factors for Residential Gas Efficiency Programs ................................................... 290
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Appendices
Table 50: NTG Factors for C&I Gas Efficiency Programs.............................................................. 292
Acknowledgements
The 2012 Program Year version of the Rhode Island Technical Reference Manual (“TRM”) is the first
version of this manual. Many individuals have contributed to this effort: Arlis Reynolds, Kimberly
Crossman, Angela Li, Wendy Todd, Lindsay Perry, Bill Blake, Grace Mallett, Steve Bonnano.
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Appendices
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Rhode Island TRM
Appendices
Introduction
This Rhode Island Technical Reference Manual (“TRM”) documents for regulatory agencies, customers,
and other stakeholders the methodologies and assumptions used by National Grid to estimate the savings,
including reductions in energy and demand consumption and other resource and non-resource benefits,
attributable to its electric and gas energy efficiency programs. This reference manual provides methods,
formulas and default assumptions for estimating energy, peak demand and other resource impacts from
efficiency measures.
Within this TRM, efficiency measures are organized by the sector for which the measure is eligible and
by the primary energy source associated with the measure. The two sectors are Residential and
Commercial & Industrial (“C&I”). The primary energy sources addressed in this TRM are electricity and
natural gas.
Each measure is presented in its own section as a “measure characterization.” The measure
characterizations provide mathematical equations for determining savings (algorithms), as well as default
assumptions and sources, where applicable. In addition, any descriptions of calculation methods or
baselines are provided as appropriate. The parameters for calculating savings are listed in the same order
for each measure.
Algorithms are provided for estimating annual energy and peak demand impacts for primary and
secondary energy sources if appropriate. In addition, algorithms or calculated results may be provided for
other non-energy impacts (such as water savings or operation and maintenance cost savings).
Assumptions are based on Rhode Island data where available. Where Rhode Island-specific data is not
available, assumptions may be based on: 1) manufacturer and industry data, 2) a combination of the best
available data from jurisdictions in the same region, or 3) engineering judgment to develop credible and
realistic factors.
The TRM will be reviewed and updated annually to reflect changes in technology, baselines and
evaluation results.
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Appendices
The TRM in the Context of Energy Efficiency Programs
Overview
Due to the ramp-up of energy efficiency spending and savings goals in Rode Island it is necessary for the
acceleration of collaborative efforts focused on:
•
•
•
•
•
Improving processes,
Reexamining the presentation of planning efforts and reporting results,
Developing energy efficiency analysis tools,
Improving source and process documentation, and
Conducting broader and deeper research initiatives.
Due to the number of initiatives underway, it is important to understand the connections between these
efforts. Specifically, how does the effort to create and maintain the TRM influence other efforts, and
conversely, how is the TRM impacted by other efforts?
The purpose of this section is to show how the TRM fits into the process of administering energy
efficiency programs in Rhode Island. This section explains how the TRM is connected to the following
efforts:
•
•
•
•
•
•
Planning,
Annual reporting,
Updates to PA tracking systems,
Evolution of program and measure cost effectiveness analysis tools,
Evaluation, Measurement and Verification (“EM&V”),
Quality control.
Planning and Reporting
National Grid is submitting this first version of the RI TRM (the 2012 TRM) to the stakeholders along
with its Energy Efficiency Program Plan (“EE Program Plan”) for 2012.
The RI TRM provides regulators and stakeholders with documentation of the assumptions and algorithms
that National Grid will use in planning and reporting its energy savings for 2012. However, due to the
nature of planning, not all planning assumptions – such as those for Commercial and Industrial programs
– are documented in this TRM. For these areas, the algorithms used to calculate planned savings are
presented.
Updates to Program Administrator Tracking Systems
National Grid maintains a tracking system that contains the energy efficiency data that it uses to meet its
annual reporting to the PUC. The current design of the tracking system influences the types of
assumptions and algorithms that appear in this TRM. The current algorithms leverage inputs that
National Grid collects.
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Appendices
Evolution of Program and Measure Cost Effectiveness Analysis Tools
The program and measure cost effectiveness analysis tools are Microsoft® Excel® workbooks used by
National Grid to ensure that the measures and programs that they implement meet the cost effectiveness
requirements defined by the Rhode Island PUC in Dockets 3931 and 4202. National Grid also uses the
output from the cost effectiveness analysis tools to develop the input (data, tables, and graphs) for its EE
Program Plans and Year-End Reports. National Grid envisions aligning the measure names and the
categorization of measures in the TRM with the measure names and categorization of measures in the cost
effectiveness analysis tools either directly, or through the use of a translation tool.
Evaluation, Measurement and Verification
Evaluation, Measurement and Verification (“EM&V”) ensures that “the programs are evaluated,
measured, and verified in a way that provides confidence to the public at large that the savings are real
and in a way that enables National Grid to report those savings to the EERMC and PUC with full
confidence”.
The 2013 Rhode Island TRM will be updated with any updates to assumptions and algorithms due to key
learning from EM&V results produced since the 2012 EE Program Plan and TRM were filed.
A secondary goal of creating a TRM is to identify areas where savings calculations can be improved. The
TRM will inform future EM&V planning as a means to make these improvements.
For its Rhode Island programs, National Grid may use evaluation results from other jurisdictions. For
some of these, Rhode Island contributed sites and or budgets. For others, the application of results from
other jurisdictions is considered based on how similar the programs, delivery, and markets are to those in
Rhode Island.
Quality Control
Regulators and stakeholders can use the TRM to confirm that savings inputs and calculations are
reasonable and reliable. However, the TRM cannot be used by regulators and stakeholders to replicate
the Company’s reported savings. The TRM does not provide regulators and stakeholders with data inputs
at a level that is detailed enough to enable replication of the savings reported by PAs. These calculations
occur within tracking systems, within separate Excel workbooks, and within cost effectiveness analysis
tools. However, in the event that regulators and stakeholders request that PAs provide tracking system
details, the reproduction of reported data will be possible using the TRM.
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Appendices
TRM Update Process
Overview
This section describes the process for updating the TRM. The update process is synchronized with the
filing of EE Program Plans.
Updates to the TRM can include:
• additions of new measures,
• updates to existing TRM measures due to:
o changes in baseline equipment or practices, affecting measure savings
o changes in efficient equipment or practices, affecting measure savings
o changes to deemed savings due the revised assumptions for algorithm parameter values (e.g.,
due to new market research or evaluation studies)
o other similar types of changes,
• updates to impact factors (e.g., due to new impact evaluation studies),
• discontinuance of existing TRM measures, and
• updates to the glossary and other background material included in the TRM.
Each TRM is associated with a specific program year, which corresponds to the calendar year. The TRM
for each program year is updated over time as needed to both plan for future program savings and to
report actual savings.
Key Stakeholders and Responsibilities
Key stakeholders and their responsibilities for the TRM updates are detailed in the following
table.
Stakeholder
Responsibilities
National Grid
Rhode Island
EERMC and
Division of Public
Utilities and
Carriers
Jointly
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Identify and perform needed updates to the TRM
Provide TRM to interested stakeholders
Review; suggest modifications; and accept TRM
Assure coordination with National Grid submissions of program plans
and reported savings
Administrative coordination of TRM activities, including:
o Assure collaboration and consensus regarding TRM updates
o Assure updates are compiled and incorporated into the TRM
o Coordinate with related program activities (e.g., evaluation and
program reporting processes)
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Appendices
TRM Update Cycle
The description below indicates the main milestones of the TRM update cycle over a period of two years.
The identifier “program year” or “PY” is used to show that this cycle will be repeated every year. For
example, for the 2013 Program Year, compilation of updates will begin after the 2012 TRM is completed
in September 2011, and will continue through September 2012, for submission in November 2012.
September PY-2 to September PY-1: The PY TRM will be updated as needed based on evaluation
studies and any other updates.
After the PY-1 TRM has been filed, there may be updates to the TRM. The most common updates to the
TRM will result from new evaluation studies. Results of evaluation studies will be integrated into the
next version of the TRM as the studies are completed. Other updates may include the results of group
discussions to adopt latest research or the addition or removal of energy efficiency measures
November (PY-1) prior to program year: The PY TRM is filed with National Grid’s PY EE
program plan
The PY TRM is submitted to the PUC jointly with National Grid’s EE program plan. With regard to the
program plans, the TRM is considered a “planning document” in that it provides the documentation for
how the PAs plan to count savings for that program year. The TRM is not intended to fully document
how the PAs develop their plan estimates for savings.
January PY: National Grid begins to track savings based on the PY TRM
Beginning in January PY, the PAs will track savings for the PY based on the PY TRM.
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Appendices
Measure Characterization Structure
This section describes the common entries or inputs that make up each measure characterization. A
formatted template follows the descriptions of each section of the measure characterization.
Source citations: The source of each assumption or default parameter value should be properly
referenced in a footnote. New source citations should be added to
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Appendix D: Table of Referenced Documents, which serves as a cross-reference to digital
versions of the referenced documents.
Measure Name
A single device or behavior may be analyzed as a range of measures depending on a variety of
factors which largely translate to where it is and who is using it. Such factors include hours of
use, location, and baseline (equipment replaced or behavior modified). For example, the same
screw-in compact fluorescent lamp will produce different savings if installed in an emergency
room waiting area than if installed in a bedside lamp.
Version Date and Revision History
This section will include information regarding the history of the measure entry including when the
measure section was drafted, the data that the measure is effective, and the last data that the measure is
offered.
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
This section will include a plain text description of the efficient and baseline technology and the benefit(s)
of its installation, as well as subfields of supporting information including:
Description: <Description of the energy efficiency measure>
Primary Energy Impact: <Electric or Natural Gas>
Secondary Energy Impact: <e.g., Natural Gas, Propane, Oil, Electric, None>
Non-Energy Impact: <e.g., Water Resource, O&M, Non-Resource, None>
Sector: <Residential, Low Income or Commercial and Industrial>
Market: <Lost Opportunity, Retrofit and/or Products and Services>
End-Use: <Definition – see list below>
Program: <Per PA definition>
Notes
This is an optional section for additional notes regarding anticipated changes going forward. For
example, this section would not if there were upcoming statewide evaluations affecting the measure, or
any plans for development of statewide tool for calculating measure savings.
Algorithms for Calculating Primary Energy Impacts
This section will describe the method for calculating the primary energy savings in appropriate units, i.e.,
kWh for electric energy savings or MMBtu for natural gas energy savings. The savings algorithm will be
provided in a form similar to the following:
∆kWh = ∆kW × Hours
Similarly, the method for calculating electric demand savings will be provided in a form similar to the
following:
∆kW = (Watts BASE − Watts EE ) / 1000
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Rhode Island TRM
Below the savings algorithms, a table contains the definitions (and, in some cases, default values) of each
input in the equation(s). The inputs for a particular measure may vary and will be reflected as such in this
table (see example below).
∆kWh
∆kW
Hours
WattsBASE
WattsEE
=
=
=
=
=
gross annual kWh savings from the measure
gross connected kW savings from the measure
average hours of use per year
baseline connected kW
energy efficient connected kW
Baseline Efficiency
This section will include a statement of the assumed equipment/operation efficiency in the absence of
program intervention. Multiple baselines will be provided as needed, e.g., for different markets.
Baselines may refer to reference tables or may be presented as a table for more complex measures.
High Efficiency
This section will describe the high efficiency case from which the energy and demand savings are
determined. The high efficiency case may be based on specific details of the measure installation,
minimum requirements for inclusion in the program, or an energy efficiency case based on historical
participation. It may refer to tables within the measure characterization or in the appendices or efficiency
standards set by organizations such as ENERGY STAR® and the Consortium for Energy Efficiency.
Hours
This section will note operating hours for equipment that is either on or off, or equivalent full load hours
for technologies that operate at partial loads, or reduced hours for controls. Reference tables will be used
as needed to avoid repetitive entries.
Measure Life
Measure Life includes equipment life and the effects of measure persistence. Equipment life is the
number of years that a measure is installed and will operate until failure. Measure persistence takes into
account business turnover, early retirement of installed equipment, and other reasons measures might be
removed or discontinued.
Secondary Energy Impacts
This section described any secondary energy impacts associated with the energy efficiency measure,
including all assumptions and the method of calculation.
Non-Energy Impacts
This section describes any non-energy impacts associated with the energy efficiency measure, including
all assumptions and the method of calculation.
Impact Factors for Calculating Adjusted Gross Savings
The section includes a table of impact factor values for adjusting gross savings. Impact factors for
calculating net savings (free ridership, spillover and/or net-to-gross ratio) are inError! Reference source
not found.. Further descriptions of the impacts factors and the sources on which they are based are
described below the table.
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Rhode Island TRM
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Abbreviated program names may be used in the above table. The mapping of full program names to
abbreviated names is given below.
Sector
Full Program Name
Residential – Electric Residential New Construction
Energy Star HVAC
EnergyWise
Energy Star Products
Energy Star Lighting
Residential Behavior Pilot
Low Income – Electric Single Family Low Income Services
C&I – Electric
Large Commercial New Construction
Large Commercial Retrofit
Small Business Direct Install
Residential – Gas
Residential Lost Opportunity
Residential HVAC
Residential Retrofit Multifamily
Low Income – Gas
Low-Income Retrofit 1-4
C&I – Gas
Large Commercial New Construction
Large Commercial Retrofit
Small Business Direct Install
November 2011
Abbreviation
HVAC
EWise
Products
Lighting
Behavior
Low Income
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32
Rhode Island TRM
Impact Factors for Calculating Adjusted Gross and Net Savings
National Grid uses the algorithms in the Measure Characterization sections to calculate the gross savings
for energy efficiency measures. Impact factors are then applied to make various adjustments to the gross
savings estimate to account for the performance of individual measures or energy efficiency programs as
a whole in achieving energy reductions as assessed through evaluation studies. Impacts factors address
both the technical performance of energy efficiency measures and programs, accounting for the measured
energy and demand reductions realized compared to the gross estimated reductions, as well as the
programs’ effect on the market for energy efficient products and services.
This section describes the types of impact factors used to make such adjustments, and how those
impacts are applies to gross savings estimates. Definitions of the impact factors and other terms
are also provided in the Glossary (see
November 2011
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Rhode Island TRM
Appendix F: Glossary).
Types of Impact Factors
The impact factors used to adjust savings fall into one of two categories:
Impact factors used to adjust gross savings:
•
•
•
•
In-Service Rate (“ISR”)
Savings Persistence Factor (“SPF”)
Realization Rate (“RR”)
Summer and Winter Peak Demand Coincidence Factors (“CF”).
Impact factors used to calculate net savings:
•
•
Free-Ridership (“FR”) and Spillover (“SO”) Rates
Net-to-Gross Ratios (“NTG”).
The in-service rate is the actual portion of efficient units that are installed. For example, efficient lamps
may have an in-service rate less than 1.00 since some lamps are purchased as replacement units and are
not immediately installed. The ISR is 1.00 for most measures.
The savings persistence factor is the portion of first-year energy or demand savings expected to persist
over the life of the energy efficiency measure. The SPF is developed by conducting surveys of installed
equipment several years after installation to determine the actual operational capability of the equipment.
The SPF is 1.00 for most measures.
In contrast to savings persistence, measure persistence takes into account business turnover, early
retirement of installed equipment, and other reasons the installed equipment might be removed or
discontinued. Measure persistence is generally incorporated as part of the measure life, and therefore is
not included as a separate impact factor.
The realization rate is used to adjust the gross savings (as calculated by the savings algorithms) based on
impact evaluation studies. The realization rate is equal to the ratio of measure savings developed from an
impact evaluation to the estimated measure savings derived from the savings algorithms. The realization
rate does not include the effects of any other impact factors. Depending on the impact evaluation study,
there may be separate realization rates for energy (kWh), peak demand (kW), or fossil fuel energy
(MMBtu).
A coincidence factor adjusts the connected load kW savings derived from the savings algorithm. A
coincidence factor represents the fraction of the connected load reduction expected to occur at the same
time as a particular system peak period. The coincidence factor includes both coincidence and diversity
factors combined into one number, thus there is no need for a separate diversity factor in this TRM.
Coincidence factors are provided for the on-peak period as defined by the ISO New England for the
Forward Capacity Market (“FCM”), and are calculated consistently with the FCM methodology. Electric
demand reduction during the ISO New England peak periods is defined as follows:
November 2011
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Rhode Island TRM
Summer On-Peak: average demand reduction from 1:00-5:00 PM on non-holiday weekdays in June
July, and August
Winter On-Peak: average demand reduction from 5:00-7:00 PM on non-holiday weekdays in December
and January
The values described as Coincidence Factors in the TRM are not always consistent with the strict
definition of a Coincidence Factor (CF). It would be more accurate to define the Coincidence Factor as
“the value that is multiplied by the Gross kW value to calculate the average kW reduction coincident with
the on-peak periods.” A coincidence factor of 1.00 may be used because the coincidence is already
included in the estimate of Gross kW; this is often the case when the “Max kW Reduction” is not
calculated and instead the “Gross kW” is estimated using the annual kWh reduction estimate and a
loadshape model.
A free-rider is a customer who participates in an energy efficiency program (and gets an incentive) but
who would have installed some or all of the same measure(s) on their own, with no change in timing of
the installation, if the program had not been available. The free-ridership rate is the percentage of
savings attributable to participants who would have installed the measures in the absence of program
intervention.
The spillover rate is the percentage of savings attributable to a measure or program, but additional to the
gross (tracked) savings of a program. Spillover includes the effects of 1) participants in the program who
install additional energy efficient measures outside of the program as a result of participating in the
program, and 2) non-participants who install or influence the installation of energy efficient measures as a
result of being aware of the program. These two components are the participant spillover (SOP) and
non-participant spillover (SONP).
The net savings value is the final value of savings that is attributable to a measure or program. Net
savings differs from gross savings because it includes the effects of the free-ridership and/or spillover
rates.
The net-to-gross ratio is the ratio of net savings to the gross savings adjusted by any impact factors (i.e.,
the “adjusted” gross savings). Depending on the evaluation study, the NTG ratio may be determined from
the free-ridership and spillover rates, if available, or it may be a distinct value with no separate
specification of FR and SO values.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
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Rhode Island TRM
Standard Net–to–Gross Formulas
The TRM measure entries provide algorithms or methodologies for calculating the gross energy
and demand savings for each category of efficiency measures. The following standard formulas
show how the impact factors are applied to calculate the net savings. These are the calculations
used by National Grid to track and report gross and net savings for its energy efficiency
programs in Rhode Island.
Calculation of Net Annual Electric Energy Savings
net_kWh = gross_kWh × SPF × ISR x RRE × NTG
Calculation of Net Summer Electric Peak Demand Coincident kW Savings
net_kWSP = gross_kW × SPF × ISR × RRSP × CFSP × NTG
Calculation of Net Winter Electric Peak Demand Coincident kW Savings
net_kWWP = gross_kW × SPF × ISR × RRWP × CFWP × NTG
Calculation of Net Annual Natural Gas Energy Savings
net_MMbtu = gross_MMBtu × SPF × ISR × RRE × NTG
Where:
Gross_kWh
net_kWh
Gross_kWSP
Gross_kWWP
net_kWSP
net_kWWP
Gross_MMBtu
net_MMBtu
SPF
ISR
CFSP
CFWP
RRE
RRSP
RRWP
NTG
FR
SOP
SONP
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
Gross Annual kWh Savings
Net Annual kWh Savings
Gross Connected kW Savings (summer peak)
Gross Connected kW Savings (winter peak)
Adjusted Gross Connected kW Savings (winter peak)
Net Coincident kW Savings (winter peak)
Gross Annual MMBtu Savings
Net Annual MMBtu Savings
Savings Persistence Factor
In-Service Rate
Peak Coincidence Factor (summer peak)
Peak Coincidence Factor (winter peak)
Realization Rate for electric energy (kWh)
Realization Rate for summer peak kW
Realization Rate for winter peak kW
Net-to-Gross Ratio
Free-Ridership Factor
Participant Spillover Factor
Non-Participant Spillover Factor
Depending on the evaluation study methodology:
•
NTG is equal to (1 – FR + SOP + SONP), or
•
NTG is a single value with no distinction of FR, SOP, SONP, and/or other factors that cannot be
reliably isolated.
November 2011
© 2011 National Grid
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Rhode Island TRM
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
37
Rhode Island TRM
Residential Electric Efficiency Measures
Residential Electric Efficiency Measures
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
38
Rhode Island TRM
Residential Electric Efficiency Measures
Lighting – CFL Bulbs
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Compact fluorescent lamps (CFLs) offer comparable luminosity to incandescent
lamps at significantly less wattage and significantly longer lamp lifetimes.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: One-Time Non-Resource
Sector: Residential
Market: Lost Opportunity
End Use: Lighting
Program: Energy Star Homes, Energy Star Lighting, Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Rebated CFL Bulb
Average annual kWh reduction per unit. See Table 1.
Average annual kW reduction per unit. See Table 1.
Table 1: Savings for Residential CFL Bulbs
Measure
CFL
CFL (Retail)
CFL (Hard-to-Reach)
CFL (Specialty)
CFL
Program
Energy Star Homes
Energy Star Lighting
Energy Star Lighting
Energy Star Lighting
Single Family – Appliance Management
∆kW1,2
0.049
0.046
0.046
0.046
0.0113
Hours
1,168
1,022
1,022
1,022
n/a
∆kWh
57
47
47
47
4
41
Baseline Efficiency
The baseline efficiency case is an incandescent bulb.
1
Nexus Market Research and RLW Analytics (2004). Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Table 1-8.
2
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT; Table 1-2.
3
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
4
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1, Page 5.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
39
Rhode Island TRM
Residential Electric Efficiency Measures
High Efficiency
The high efficiency case is an ENERGY STAR® rated CFL spiral bulb.
Hours
Average annual operating hours are 1,168 hours/year (3.2 hours/day5 * 365 days) for mail order/coupon
bulbs and 1,022 hours/year (2.8 hours/day6 * 365 days/year) for markdown and other retail bulbs.
Measure Life
The measure life is 7 years.
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Description
One-Time Non-Resource
Savings
O&M Cost Reduction
7
$3.00/Bulb
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR SPF RRE RRSP
CFL
CFL (MO)
CFL (Retail)
CFL (Hard-to-Reach)
CFL (Specialty)
CFL (MO Specialty)
CFL
Energy Star Homes
Energy Star Lighting
Energy Star Lighting
Energy Star Lighting
Energy Star Lighting
Energy Star Lighting
Single Family – AMP
0.99
0.84
0.33
0.60
0.60
0.80
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
RRWP
CFSP
CFWP
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.11
0.11
0.11
0.11
0.11
0.11
0.35
0.22
0.22
0.22
0.22
0.22
0.22
1.00
In-Service Rates
In-Service rates are National Grid assumption based on regional PA working groups. In its modeling for CFLs,
National Grid inputs the product of in service rate and net-to-gross as the in service rate.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are 100% since savings estimates are based on evaluation results.
Coincidence Factors
Coincidence factors for Residential Lighting and Energy Star Homes are from the 2009 Lighting Markdown Study.8
Coincidence factors for Single Family – AMP are estimated using the demand allocation methodology described in
the 2000 EnergyWise program impact evaluation.9
5
Nexus Market Research and RLW Analytics (2004). Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Table 9-7.
6
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT; Table 1-2.
7
Massachusetts Electric Utilities (2003). MEMO: Non-Electric Benefit Performance Metrics – Residential 1. Prepared for
Massachusetts Non-Utility Parties.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
40
Rhode Island TRM
Residential Electric Efficiency Measures
8
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT.
9
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
41
Rhode Island TRM
Residential Electric Efficiency Measures
Lighting – Indoor Fixtures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of ENERGY STAR® compact fluorescent (CFL) indoor fixtures.
Compact fluorescent fixtures offer comparable luminosity to incandescent fixtures at significantly
less wattage and significantly longer lifetimes. Hardwired fluorescent fixtures offer comparable
luminosity to incandescent fixtures at significantly lower wattage and offer significantly longer
lifespan.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: One-Time Non-Resource
Sector: Residential
Market: Lost Opportunity
End Use: Lighting
Program: Energy Star Homes, Energy Star Lighting
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kW × Hours
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Rebated indoor fixture
Average annual kWh reduction: 44 kWh (calculated)
Average reduction in connected kW: 0.049 kW10
Average annual operating hours
Baseline Efficiency
The baseline efficiency case is an incandescent, screw-based fixture with an incandescent lamp.
High Efficiency
The high efficiency case is an ENERGY STAR® qualified compact fluorescent light fixture wired for
exclusive use with pin-based CFLs.
Hours
The average annual operating hours are 912.5 hours/year (2.5 hours/day11 * 365 days/year).
10
Nexus Market Research and RLW Analytics (2004) Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Table 1-8.
11
Nexus Market Research and RLW Analytics (2004) Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Table 9-7.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
42
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 20 years.12
Secondary Energy Impact
There are no secondary energy impacts for this measure.
Non-Energy Impact
Benefit Type
Description
One-Time Non-Resource
Savings
O&M Cost Reduction
13
$3.50/Fixture
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Indoor Fixture
Indoor Fixture (MO)
Indoor Fixture (Retail)
Energy Star Homes
Energy Star Lighting
Energy Star Lighting
0.99
0.95
0.95
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.11
0.11
0.11
0.22
0.22
0.22
In-Service Rates
Energy Star Lighting: 2004 Impact Evaluation of MA, RI, VT Residential Lighting Program14
Energy Star Homes: 2006 ENERGY STAR® Homes New Homebuyer Survey Report15
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors for indoor fixtures are based on the 2009 Lighting Markdown Study.16
12
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Lighting Fixtures.
Massachusetts Electric Utilities (2003). MEMO: Non-Electric Benefit Performance Metrics – Residential 1. Prepared for
Massachusetts Non-Utility Parties.
14
Nexus Market Research and RLW Analytics (2004). Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Page 11.
15
Nexus Market Research and Dorothy Conant (2006). Massachusetts ENERGY STAR ® Homes: 2005 Baseline Study: Part II:
Homeowner Survey Analysis Incorporating Inspection Data Final Report. Prepared for Joint Management Committee; Table 8.1
16
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT.
13
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
43
Rhode Island TRM
Residential Electric Efficiency Measures
Lighting – Outdoor Fixtures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of hardwired ENERGY STAR® fluorescent outdoor fixtures with
pin-based bulbs. Savings for this measure are attributable to high efficiency outdoor lighting
fixtures and are treated similarly to indoor fixtures.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: One-time Non-Resource
Sector: Residential
Market: Lost Opportunity
End Use: Lighting
Program: Energy Star Lighting
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms which use averaged inputs:
∆kWh = ∆kW × Hours
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Rebated outdoor fixture
Average annual kWh reduction: 156 kWh (calculated)
Average connected kW reduction: 0.095 kW17
Average annual operating hours
Baseline Efficiency
The baseline efficiency case is an incandescent, screw-based fixture with an incandescent bulb.
High Efficiency
The high efficiency case is an ENERGY STAR® fixture wired for exclusive use with a pin based CFL
bulb.
Hours
The average annual operating hours are 1,642.5 hours/year (4.5 hours per day18 * 365 days per year).
17
Nexus Market Research and RLW Analytics (2004). Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Table 1-8.
18
Nexus Market Research and RLW Analytics (2004). Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Page 104
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
44
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 6 years for markdown/retail outdoor fixtures.19
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Description
Savings
20
One-Time Non-Resource
$3.50/Fixture
O&M Cost Impacts
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Outdoor Fixture (MO)
Outdoor Fixture (Retail)
Energy Star Lighting
Energy Star Lighting
0.87 1.00
0.87 1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.11
0.11
0.22
0.22
In-Service Rates
Energy Star Lighting: 2004 Impact Evaluation of MA, RI, VT Residential Lighting Program21
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors are based on the 2009 Lighting Markdown Study.22
19
Nexus Market Research and RLW Analytics (2008). Residential Lighting Measure Life Study. Prepared for New England
Residential Lighting Program Sponsors; Table 1-2.
20
Massachusetts Electric Utilities (2003). MEMO: Non-Electric Benefit Performance Metrics – Residential 1. Prepared for
Massachusetts Non-Utility Parties.
21
Nexus Market Research and RLW Analytics (2004) Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Page 11.
22
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
45
Rhode Island TRM
Residential Electric Efficiency Measures
Lighting – Torchieres
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of high-efficiency ENERGY STAR® torchieres. High efficiency
torchieres use fluorescent in place of halogen or incandescent bulbs to provide comparable
luminosity at significantly reduced wattage.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential, Low Income
Market: Lost Opportunity
End Use: Lighting
Program: Energy Star Lighting
Algorithms for Calculating Primary Energy Impact
Unit savings are based on the following algorithms which use averaged inputs:
∆kWh = ∆kW × Hours
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Rebated ENERGY STAR® Torchiere
Average annual kWh reduction: 139 kWh (calculated)
Average connected kW reduction: 0.116 kW 23
Average annual operating hours
Baseline Efficiency
The baseline efficiency case is a halogen (or incandescent) torchiere fixture.
High Efficiency
The high efficiency case is a fluorescent torchiere fixture.
Hours
The average annual operating hours are 1,204.5 hours/year (3.3 hours/day24 * 365 days/year).
Measure Life
The measure life is 8 years.25
23
Nexus Market Research and RLW Analytics (2004) Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Table 1-8.
24
Nexus Market Research and RLW Analytics (2004) Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont,
National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Page 104
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
46
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary-Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Torchiere (MO)
Torchiere (Retail)
Energy Star Lighting
Energy Star Lighting
0.83
0.83
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.11
0.11
0.22
0.22
In-Service Rates
2004 Impact Evaluation of MA, RI, VT Residential Lighting Program26
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are 1.0 because savings are the results of impact evaluations.
Coincidence Factors
Coincidence factors are based on the 2009 Lighting Markdown Study.27
25
GDS, 2007 Measure Life Report. Also based on 10,000 rated life of torchiere (EFI website accessed 09/22/2011)/ annual
operating hours.
26
Nexus Market Research and RLW Analytics (2004). Impact Evaluation of the MA, RI, and VT 2003 Residential Lighting
Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont Service
Department for Efficiency Vermont, National Grid, Northeast Utilities, NSTAR, and Unitil Energy Systems, Inc.; Page 11.
27
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
47
Rhode Island TRM
Residential Electric Efficiency Measures
Lighting – LED Lighting
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of Light-Emitting Diode (LED) screw-in bulbs and fixtures. LEDs
offer comparable luminosity to incandescent bulbs at significantly less wattage and significantly
longer lamp lifetimes.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: One-time Non-Resource
Sector: Residential
Market: Lost Opportunity
End Use: Lighting
Program: Energy Star Lighting
Algorithms for Calculating Primary Energy Impact
Unit savings are based on the following algorithms which use averaged inputs:
∆kWh = (kWBASE − kWLED ) × Hours
∆kW = ∆kW
Where:
Unit
∆kWh
kWBASE
kWLED
Hours
∆kW
=
=
=
=
=
=
Rebated LED lamp or fixture
Average annual energy savings: 48 kWh28
Average connected kW of baseline bulb: 65 Watts
Average connected kW of LED bulb: 18 Watts
Average annual operating hours
Average connected kW reduction: 0.013 kW29
Baseline Efficiency
The baseline efficiency case is a 65-watt incandescent bulb in a screw-based socket or fluorescent under
cabinet light.
High Efficiency
The high efficiency case is an 18-watt LED downlight.
Hours
The average annual operating hours are 1,022 hours/year (2.8 hours/day30 * 365 days/year).
28
ENERGY STAR Website (2011). Light Bulbs for Consumers. Accessed on 10/12/2011.
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
30
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT; Page 6.
29
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
48
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 20 years.31
Secondary-Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Description
One-time Non-Resource
Savings
32
$3.00/Bulb
33
$3.50/Fixture
O&M Cost Impacts
One-time Non-Resource
O&M Cost Impacts
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
LED Bulb (Retail)
Energy Star Lighting
1.00
1.00
1.00
1.00
1.00
0.11
0.22
LED Fixture (Retail)
Energy Star Lighting
1.00
1.00
1.00
1.00
1.00
0.11
0.22
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors are from the 2009 Lighting Markdown Study.34
31
Expected lifetime form ENERGY STAR ®.
Massachusetts Electric Utilities (2003). MEMO: Non-Electric Benefit Performance Metrics – Residential 1. Prepared for
Massachusetts Non-Utility Parties.
33
Massachusetts Electric Utilities (2003). MEMO: Non-Electric Benefit Performance Metrics – Residential 1. Prepared for
Massachusetts Non-Utility Parties.
34
Nexus Market Research and RLW Analytics (2009). Residential Lighting Markdown Impact Evaluation. Prepared for
Markdown and Buydown Program Sponsors in CT, MA, RI, and VT.
32
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
49
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Computer Monitors
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Rebates for ENERGY STAR® qualified computer monitors.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Process
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Rebated ENERGY STAR® computer monitor
Average annual kWh savings per unit: 35 kWh35
Average annual kW savings per unit: 0.010 kW36
Baseline Efficiency
The baseline efficiency case is a conventional computer monitor.
High Efficiency
The high efficiency case is an ENERGY STAR® rated LCD monitor.
Hours
Not applicable to energy savings estimate, as source identifies kWh savings.
Measure Life
The measure life is 5 years.37
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
35
Consortium for Energy Efficiency (2008). Consumer Electronics Program Guide: Information on Voluntary Approaches for
the Promotion of Energy Efficient Consumer Electronics - Products and Practices; Table 1.
36
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
37
Consortium for Energy Efficiency (2008). Consumer Electronics Program Guide: Information on Voluntary Approaches for
the Promotion of Energy Efficient Consumer Electronics - Products and Practices.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
50
Rhode Island TRM
Residential Electric Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
Computer Monitor
Energy Star Products
1.00 1.00 1.00
1.00
1.00
0.35
1.00
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
National Grid assumption based on regional PA working groups. Gross savings estimate for this measure
incorporates coincidence.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
51
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Computers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Rebates for ENERGY STAR® computers
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Process
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on engineering estimates:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
= Rebated ENERGY STAR® desktop computer
∆kWh = Average annual kWh reduction per unit. See Table 2.
∆kW = Average kW savings per unit. See Table 2.
Table 2: Savings for Computers
Measure
Desktop Computer
Laptop Computer
∆kW38
0.009
0.003
∆kWh39
77
24
Baseline Efficiency
The baseline efficiency case is a conventional computer.
High Efficiency
The high efficiency case is an ENERGY STAR® rated computer.
Hours
The operational hours include: 3,322 annual idle hours, 399 annual sleep hours, and 5,039 annual off
hours.40
38
Environmental Protection Agency (2010). Life Cycle Cost Estimate for ENERGY STAR Office Equipment. kW savings derived
from weighted average by hours of kWh savings.
39
Ibid.
40
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
52
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 4 years.41
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE RRSP
Desktop Computer
Laptop Computer
Energy Star Products
Energy Star Products
1.00
1.00
1.00
1.00
1.00
1.00
RRWP
CFSP
CFWP
1.00
1.00
0.35
0.35
1.00
1.00
1.00
1.00
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors are National Grid assumption based on regional PA working groups.
41
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
53
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Room Air Cleaner
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Rebates provided for the purchase of an ENERGY STAR® qualified room air
cleaner. ENERGY STAR® air cleaners are 40% more energy-efficient than standard models.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Process
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed and based on the following algorithms which use averaged inputs:
∆kWh = ∆kWh
∆kW = ∆kWh / Hours
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Rebated room air cleaner
Average annual kWh savings per unit: 268 kWh 42
Average connected load reduction: 0.031 kW 43
Annual operating hours
Baseline Efficiency
The baseline efficiency case is a conventional unit with clean air delivery rate (CADR) of 51-100.
High Efficiency
The high efficiency case is an ENERGY STAR® qualified air cleaner with a CADR of 51-100.
Hours
The savings are based on 8,760 operating hours per year.
Measure Life
The measure life is 9 years.44
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
42
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Room Air Cleaner.
Ibid.
44
Ibid.
43
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
54
Rhode Island TRM
Residential Electric Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Room Air Cleaner
Energy Star Products
1.00
1.00
1.00
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
55
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Smart Strips
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Switches off plug load using current sensors and switching devices which turn
off plug load when electrical current drops below threshold low levels. Smart Strips can be
used on electrical home appliances or in the workplace.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity, Retrofit
End Use: Process
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Unit
= Rebated smart strip
∆kWh = Average annual kWh savings per unit: 75 kWh45
∆kW = Max kW savings per unit: 0.060 kW46
Baseline Efficiency
The baseline efficiency case is no power strip and leaving peripherals on or using a power surge protector.
High Efficiency
The high efficiency case is a Smart Strip Energy Efficient Power Bar
Hours
Since the power strip is assumed to be plugged in all year, the savings are based on 8,760 operational
hours per year.
Measure Life
The measure life is 5 years.47
45
ECOS 2008 Entertainment Center and DVDs.
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
47
National Grid assumption based on regional PA working groups.
46
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
56
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary-Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Smart Strips
Energy Star Products
1.00
1.00
1.00
1.00
1.00
0.35
1.00
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% per National Grid assumption based on regional PA working groups.
Coincidence Factors
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
57
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Televisions
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Rebates for ENERGY STAR® televisions.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Process
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Rebated television
Average annual kWh savings per unit: 75 kWh48
Average kW savings per unit: 0.021 kW49
Baseline Efficiency
The baseline efficiency case is a CEE Tier 1 television.
High Efficiency
The high efficiency case is an ENERGY STAR® qualified television, which uses about 40% less energy
than standard units. Qualifying ENERGY STAR® TV products include standard TVs, HD-ready TVs,
and the large flat-screen plasma TVs. The savings, which are weighted between on and standby modes,
for various models are given in the following table.
Hours
Since the TV is assumed to be plugged in all year, the savings are based on 8,760 operational hours per
year. The weighted savings are based on 5 hours on and 19 hours standby each day. 50
48
National Grid assumption based on regional PA working groups and information from ENERGY STAR Website. Televisions
for Consumers. Accessed on 10/12/2011.
49
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
50
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Television.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
58
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 6 years.51
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impact
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Televisions
Energy Star Products
1.00
1.00
1.00
1.00
1.00
0.50
0.85
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
National Grid assumption based on regional PA working groups.
51
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Television.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
59
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Refrigerators (Rebate)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Rebates for purchase of ENERGY STAR® qualified refrigerators rather then nonqualified models. ENERGY STAR® qualified refrigerators use at least 20% less energy than
new, non-qualified models.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Refrigeration
Program: Energy Star Homes, Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are based on the following algorithms which use averaged inputs:
∆kWh = ∆kWhBASE − ∆kWhES
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Installed ENERGY STAR® refrigerator
Annual savings over non-ES refrigerators averaged by model type: 107 kWh52
Average kW reduction over non-ES refrigerator: 0.014 kW53
Baseline Efficiency
The baseline efficiency case is a residential refrigerator that meets the Federal minimum standard for
energy efficiency.
High Efficiency
The high efficiency case is an ENERGY STAR® residential refrigerator that uses 20% less energy than
models not labeled with the ENERGY STAR® logo.
Hours
Not applicable.
Measure Life
The measure life is 12 years.54
52
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Residential Refrigerator;
average of savings from all refrigerator models.
53
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
60
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Refrigerators
Energy Star Homes
1.00
1.00
1.00
1.00
1.00
1.00
0.92
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
National Grid assumption based on regional PA working groups.
54
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Residential Refrigerator.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
61
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Refrigerators (Retrofit)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure covers the replacement of an existing inefficient refrigerator with a
new ENERGY STAR® rated refrigerator. ENERGY STAR® qualified refrigerators use at least
20% less energy than non-qualified models.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Recycling and materials handling of old refrigerator
Sector: Residential, Low Income
Market: Retrofit
End Use: Refrigeration
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Removal of existing refrigerator and installation of new efficient refrigerator
Average annual kWh savings per unit: 1,122 kWh55
Max kW Reduction: 0.148 kW56
Baseline Efficiency
The baseline efficiency case is the existing refrigerator. It is assumed that low-income customers would
otherwise replace their refrigerators with a used inefficient unit.
High Efficiency
The high efficiency case is an ENERGY STAR® rated refrigerator that meets the ENERGY STAR®
criteria for full-sized refrigerators (7.75 cubic feet), using at least 20% less energy than models meeting
the minimum Federal government standard.
Hours
Savings are based on 8,760 operating hours per year.
55
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1.
56
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
62
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
For low-income installations, the measure life is 19 years.57
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
One-Time Non-Resource
Description
Savings
Recycling and materials handling of old refrigerator
58
$172.53/Unit
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Refrigerator Replacement
Mini AMP
Single Family - AMP
Single Family - AMP
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.92
0.92
In-Service Rates
In-service rates are 100% as it is assumed all refrigerators are in-use.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.59
57
National Grid assumption based on regional PA working groups.
NMR Group (2011). “The Rhode Island Appliance Turn-in Program”
59
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
58
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
63
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Freezers (Rebate)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Rebates provided for the purchase of ENERGY STAR® freezers. ENERGY
STAR® qualified freezers use at least 10% less energy than new, non-qualified models and return
even greater savings compared to old models.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Refrigeration
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are based on the following algorithms which use averaged inputs:
∆kWh = ∆kWhBASE − ∆kWhES
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Installed ENERGY STAR® freezer
Annual savings over non-ES freezers averaged by model type: 136 kWh60
Average kW reduction over non-ES freezer: 0.018 kW61
Baseline Efficiency
The baseline efficiency case is a residential freezer that meets the Federal minimum standard for energy
efficiency.
High Efficiency
The high efficiency case is based on an ENERGY STAR® rated freezer that uses 10% less energy than
models not labeled with the ENERGY STAR® logo.
Hours
Not applicable.
Measure Life
The measure life is 12 years.62
60
Northeast Energy Efficiency Partnerships (2008). Refrigerator and Freezer Screening Tool; average savings of all given
models.
61
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
64
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impact
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Freezers
Energy Star Products
1.00
1.00
1.00
1.00
1.00
1.00
0.92
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
National Grid assumption based on regional PA working groups.
62
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
65
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Freezers (Retrofit)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure covers the replacement of an existing inefficient freezer with a new
energy efficient model.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Recycling and materials handling of old refrigerator
Sector: Low Income
Market: Retrofit
End Use: Refrigeration
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Removal of existing freezer and installation of new efficient freezer
Average annual kWh savings per unit: 637 kWh63
Max kW Reduction: 0.084 kW 64
Baseline Efficiency
The baseline efficiency case for both the replaced and baseline new freezer is represented by the existing
freezer. It is assumed that low-income customers would replace their freezers with a used inefficient unit.
High Efficiency
The high efficiency case is a new high efficiency freezer.
Hours
Not applicable.
Measure Life
The measure life is 19 years.65
63
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1.
64
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
65
National Grid assumption based on regional PA working groups; it is assumed that low-income customers would replace with
a used inefficient unit so the full savings are counted for the full lifetime.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
66
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
One-Time Non-Resource
Description
Recycling and materials handling of old refrigerator 66
Savings
$172.53/Unit
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Freezer Replacement
Single Family – AMP
1.00
1.00
1.00
1.00
1.00
1.00
0.92
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.67
66
67
NMR Group (2011). “The Rhode Island Appliance Turn-in Program”
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
67
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Refrigerator/Freezer Recycling
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The retirement of old, inefficient secondary refrigerators and freezers.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: Refrigeration
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results68:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Removed secondary refrigerator or freezer
Average annual kWh savings per unit. See Table 3.
Average kW reduction per unit: See Table 3.
Table 3: Savings for Refrigerator/Freezer Recycling
Measure
Refrigerator Recycle Primary
Refrigerator Recycle Secondary Replaced
Refrigerator Recycle Secondary Not Replaced
Program
Energy Star Products
Energy Star Products
Energy Start Products
∆kW
0.060
0.072
0.100
∆kWh
529
630
865
Baseline Efficiency
The baseline efficiency case is an old, inefficient secondary working refrigerator or freezer. Estimated
average usage is based on combined weight of freezer energy use and refrigerator energy use.
High Efficiency
The high efficiency case assumes no replacement of secondary unit.
Hours
Refrigerator and freezer operating hours are 8,760 hours/year.
68
NMR Group (2011). “The Rhode Island Appliance Turn-in Program”
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
68
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 4 years for primary refrigerator recycling and 8 years for secondary refrigerator
recycling. 69
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Refrigerator Recycle Primary
Refrigerator Recycle Secondary
(replaced)
Program
Energy Star
Products
Energy Star
Products
ISR
1.00
SPF RRE RRSP RRWP CFSP CFWP
1.00 1.00 1.00 1.00 1.00 0.92
1.00
1.00
1.00
1.00
1.00
1.00
0.92
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
National Grid assumption based on regional PA working groups.
69
Eight years from KEMA, Inc. (2010). “The Opportunity for Energy Efficiency that is Cheaper than Supply in Rhode Island,
Phase II Report – August 30, 2010”. Four years for primary refrigerator is national grid assumption of 50% of life of secondary
appliance.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
69
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Appliance Removal
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Removal of second working refrigerator or freezer for low-income program.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Low Income
Market: Retrofit
End Use: Refrigeration
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Removal of secondary refrigerator or freezer with no replacement
Average annual kWh savings per unit: 1,321 kWh70
Max kW reduction: 0.174 kW 71
Baseline Efficiency
The baseline efficiency case is the old, inefficient secondary working refrigerator or freezer.
High Efficiency
The high efficiency case assumes no replacement of secondary unit.
Hours
Not applicable.
Measure Life
The measure life is 5 years.72
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
70
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; weighted average of refrigerator and freezer removal, Table 15.
71
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
72
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
70
Rhode Island TRM
Residential Electric Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Appliance Removal
Single Family - AMP
1.00
1.00
1.00
1.00
1.00
1.00
0.92
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.73
73
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
71
Rhode Island TRM
Residential Electric Efficiency Measures
Products – Pool Pumps
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of a 2-speed or variable speed drive pool pump. Operating a pool
pump for a longer period of time at a lower wattage can move the same amount of water using
significantly less energy.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Process
Program: Energy Star Products
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = kWhBASE × %SAVE
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
kWhBASE
%SAVE
=
=
=
=
=
Rebated 2-speed or variable speed pool pump
Average annual kWh reduction. See Table 4.
Average annual kW reduction. See Table 4.
Average annual consumption of baseline pump
average percent energy reduction from switch to 2-speed or variable speed pump: 55%74
Table 4: Savings for Pool Pumps
Measure
Pool Pump (2-speed)
Pool Pump (variable speed)
75
∆kW
∆kWh
0.073
583
0.105
837
Baseline Efficiency
The baseline efficiency case is a single speed pump.
High Efficiency
The high efficiency case is a 2-speed or variable speed pump.
74
Davis Energy Group (2008). Proposal Information Template for Residential Pool Pump Measure Revisions. Prepared for
Pacific Gas and Electric Company; Page 2.
75
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
72
Rhode Island TRM
Residential Electric Efficiency Measures
Hours
Hours are considered on a case-by-case basis since they are dependent on seasonal factors, pool
size, and treatment conditions.
Measure Life
The measure life is 10 years.76
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Pool Pumps (2-speed)
Pool Pumps (variable speed)
Energy Star Products
Energy Star Products
1.00 1.00
1.00 1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.30
0.30
0.00
0.00
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factor
National Grid assumption based on regional PA working groups.
76
Davis Energy Group (2008). Proposal Information Template for Residential Pool Pump Measure Revisions. Prepared for
Pacific Gas and Electric Company.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
73
Rhode Island TRM
Residential Electric Efficiency Measures
Behavior – Basic Educational Measures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of basic educational measures during an audit to help customers become
more aware of energy efficiency.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Low Income
Market: Retrofit
End Use: Behavior
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = max(∆kWSP , ∆kWWP )
Where:
Unit
∆kWh
∆kW
=
=
=
Completed audit
Average annual kWh savings per unit: 138 kWh77
Max kW Reduction: 0.038 kW78
Baseline Efficiency
The baseline efficiency case assumes no measures installed.
High Efficiency
The high efficiency case includes basic educational measures such as CFLs, low flow showerheads, pool
and air conditioner timers, torchieres, and programmable thermostats.
Hours
Not applicable.
Measure Life
The measure life is 5 years.79
77
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid.
78
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
79
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
74
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Baseload
Single Family - AMP
1.00
1.00
1.00
1.00
1.00
0.35
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.80
80
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
75
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Central Air Conditioner
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The purchase and installation of high efficiency central air-conditioning (CAC) unit
rather than a standard CAC system, and/or to replace an existing inefficient CAC system.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity, Retrofit
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:

12 kBtu / hr 
1
1
 × HoursC
× 
−
Ton
 SEERBASE SEEREE 
12 kBtu / hr 
1
1 

∆kW = Tons ×
× 
−
Ton
EER
EER
BASE
EE 

∆kWh = Tons ×
Where:
Unit
Tons
SEERBASE
SEEREE
EERBASE
EEREE
HoursC
=
=
=
=
=
=
=
Installation of central AC system
Cooling capacity of AC equipment: Current default is 3 tons81
Seasonal Energy Efficiency Ratio of baseline AC equipment
Seasonal Energy Efficiency Ratio of new efficient AC equipment
Energy Efficiency Ratio of base AC equipment
Energy Efficiency Ratio of new efficient AC equipment
Equivalent full load cooling hours
Table 5: Savings for Residential CAC System
Measure
Early Replace AC82
CoolSmart AC (SEER 14.5 / EER 12.0)
CoolSmart AC (SEER 15.0 / EER 12.0)
CoolSmart AC (SEER 15.0 / EER 12.5)
CoolSmart AC (SEER 16.0 / EER 13.0)
SEEREE
13.0
14.5
15.0
15.0
16.0
EEREE
11.0
12.0
12.0
12.5
13.0
∆kW
0.963
0.273
0.273
0.393
0.503
∆kWh
299
103
133
133
187
81
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
82
This measure counts additional savings for the early retirement of the existing, inefficient HVAC equipment. Early
replacement savings are measured between a baseline average 10-12 year old unit and a new code-compliant unit.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
76
Rhode Island TRM
Residential Electric Efficiency Measures
Baseline Efficiency
The baseline efficiency case is a code-compliant central air-conditioning system with SEER = 13 and
EER = 11. For early replacement installations, the baseline is a 10-12 year old HVAC unit with SEER =
10 and EER = 8.5.
High Efficiency
The high efficiency case is an ENERGY STAR® qualified Central AC system. Average rated efficiency
by measure is shown in the table below.83
Hours
The equivalent full load cooling hours are 360 hours per year.84
Measure Life
The measure life for the new CAC equipment is 18 years.85 The measure life for the early replacement
savings is 7 years.86
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
CoolSmart AC
Early Replace AC
Energy Star HVAC
Energy Star HVAC
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.25
0.25
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results87.
83
The PAs are looking into abilities to track and calculate savings based on actual installed efficiencies for each project.
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
85
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
86
National Grid assumption based on regional PA working groups: The early replacement measure life of 7 years was
determined by subtracting the estimated target age range of existing equipment between 10 and 12 years old from the 18 year
measure life for new equipment.
87
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
84
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
77
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Air Source Heat Pump
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The purchase and installation of high efficiency residential heat pump system rather
than a standard HVAC system, or to replace an existing inefficient HVAC system.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity, Retrofit
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:



12 kBtu / hr 
1
1 
1
1
 × HoursC + 
 × HoursH 
−
−

Ton
 SEERBASE SEEREE 

 HSPFBASE HSPFEE 
∆kWh = Tons ×
∆kW = max(∆kWC , ∆kWH )
∆kWC = Tons ×
12 kBtu / hr 
1
1 

× 
−
Ton
EER
EER
BASE
EE 

∆kWH = Tons ×
12 kBtu / hr 
1
1
× 
−
Ton
 HSPFBASE HSPFEE
Where:
Unit
Tons
SEERBASE
SEEREE
EERBASE
EEREE
HSPFBASE
HSPFEE
HoursC
HoursH
=
=
=
=
=
=
=
=
=
=



Installation of heat pump system
Capacity of HP equipment: Current default is 3 tons88
Seasonal efficiency of baseline HP equipment
Seasonal efficiency of new efficient HP equipment
Peak efficiency of base HP equipment
Peak efficiency of new efficient HP equipment
Heating efficiency of baseline HP equipment
Heating efficiency of new efficient HP equipment
EFLH for cooling
EFLH for heating
Table 6: Savings for Residential HP System
Measure
Early Replace HP89
SEEREE
13.0
EEREE
11.0
HSPFEE
7.6
∆kWC
0.963
∆kWH
0.406
∆kWh
786
88
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
78
Rhode Island TRM
Residential Electric Efficiency Measures
CoolSmart HP (SEER 14.5 / EER 12.0 / HSPF 8.2)
CoolSmart HP (SEER 15.0 / EER 12.0 / HSPF 8.5)
14.5
15.0
12.0
12.0
8.2
8.5
0.273
0.273
0.347
0.502
519
735
Baseline Efficiency
The baseline efficiency case is a residential heat pump with EER = 11, SEER = 13 and HSPF = 7.7. For
early replacement installations, the baseline is a 10-12 year old HVAC unit with SEER = 10, EER = 8.5
and HSPF = 7.0.
High Efficiency
The high efficiency case is an ENERGY STAR® qualified air-source heat pump.
Hours
Equivalent full load hours are 1200 hours/year for heating90 and 360 hours/year for cooling. 91
Measure Life
The measure life for the new HP equipment is 18 years.92 The measure life for the early replacement
savings is 7 years.93
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
PA
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
CoolSmart HP
Early Replace HP
Energy Star HVAC
Energy Star HVAC
All
All
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.197
0.25
0.50
0.50
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors evaluation study results94.
89
This measure counts additional savings for the early retirement of the existing, inefficient HVAC equipment. Early
replacement savings are measured between a baseline average 10-12 year old unit and a new code-compliant unit.
90
National Grid assumption based on regional PA working groups.
91
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
92
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
93
National Grid assumption based on regional PA working groups: The early replacement measure life of 7 years was
determined by subtracting the estimated target age range of existing equipment between 10 and 12 years old from the 18 year
measure life for new equipment.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
79
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Ductless MiniSplit Heat Pump
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of a more efficient ENERGY STAR® rated Ductless Mini Split HP
system. Energy is savings by a more efficient heating and cooling unit and from the elimination
of duct losses.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
∆kWh = ∆kWhHP + ∆kWhDuctSealing
∆kW = ∆kW HP + ∆kWDuctSealing
Where:
Unit
∆kWhHP
∆kWHP
∆kWhDuctSealing
∆kWDuctSealing
=
=
=
=
=
Installation of high efficiency ductless Mini Split System
Annual kWh reduction from HP equipment: See HVAC – Air Source Heat Pump.
Peak kW reduction from HP equipment: See HVAC – Air Source Heat Pump.
Annual kWh savings from duct sealing: See HVAC – Duct Sealing.
Average kW reduction from duct sealing: See HVAC – Duct Sealing.
Baseline Efficiency
The baseline efficiency case is a ducted HVAC system with SEER = 13, EER = 11 and HSPF = 7.6.
High Efficiency
The high efficiency case is a high-efficiency Ductless Mini Split System.
Table 7: Savings for Residential Ductless MS HP System
Measure
Ductless MS HP (SEER 15.0 / EER 12.0 / HSPF 8.2)
SEEREE
15.0
EEREE
12.0
HSPFEE
8.2
∆kWC
0.693
∆kWH
0.647
∆kWh
761
94
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9, adjusted to align with b/c model constraints that allow for a single kW input.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
80
Rhode Island TRM
Residential Electric Efficiency Measures
Hours
The equivalent full load hours are 1,200 hours/year for heating95 and 360 hours/year for cooling. 96
Measure Life
The measure life is 18 years.97
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Ductless MS HP
Energy Star HVAC
1.00
1.00
1.00
1.00
1.00
0.25
0.50
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results.98 .
95
National Grid assumption based on regional PA working groups.
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
97
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
98
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
96
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
81
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Ductless MiniSplit Air Conditioner
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of an ENERGY STAR® rated Ductless Mini Split AC system.
Energy is savings by a more efficient cooling unit and from the elimination of duct losses.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
∆kWh = ∆kWhAC + ∆kWhDuctSealing
∆kW = ∆kWAC + ∆kWDuctSealing
Where:
Unit
∆kWhAC
∆kWAC
∆kWhDuctSealing
∆kWDuctSealing
=
=
=
=
=
Installation of central AC system
Annual kWh reduction from AC equipment: See HVAC – Central Air Condition.
Cooling kW reduction from AC equipment: See HVAC – Central Air Condition.
Annual kWh savings from duct sealing: See HVAC – Duct Sealing.
Average kW reduction from duct sealing: See HVAC – Duct Sealing.
Baseline Efficiency
The baseline efficiency case is a ducted central air-conditioning system with SEER = 13 and EER = 11.
High Efficiency
The high efficiency case is a high efficiency Ductless MiniSplit system.
Table 8: Savings for Residential Ductless MS AC System
Measure
Ductless MS AC (SEER 14.0 / EER 11.5)
SEEREE
14.0
EEREE
11.5
∆kW
0.442
∆kWh
283
Hours
Equivalent full load cooling hours are 360 hours per year.99
99
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
82
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 18 years.100
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
PA
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Ductless MS AC
Energy Star HVAC
All
1.00
1.00
1.00
1.00
1.00
0.25
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results101.
100
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
101
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
83
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Central AC Quality Installation Verification (QIV)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The verification of proper charge and airflow during installation of new
Central AC system.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
12 kBtu / hr
1
×
× HoursC × %SAVE
ton
SEER
12 kBtu / hr
1
∆kW = Tons ×
×
× %SAVE
ton
EER
∆kWh = Tons ×
Where:
Units
∆kWh
∆kW
Tons
SEER
EER
HoursC
%SAVE
=
=
=
=
=
=
=
=
Completed QIV
Annual energy savings per unit: 50 kWh (calculated)
Max peak demand reduction per unit: 0.164 kW (calculated)
Cooling capacity of AC equipment: Current default is 3 tons 102
Seasonal efficiency of AC equipment: Default is 13.0
Peak efficiency of AC equipment: Default is 11.0
Equivalent full load cooling hours
Average percent demand reduction: 5.0%103
Baseline Efficiency
The baseline efficiency case is a standard central air-conditioning system (SEER = 13 and EER = 11)
whose installation is inconsistent with manufacturer specifications.
High Efficiency
The high efficiency case is the same baseline central air-conditioning system, but with installation that is
consistent with manufacturer specifications.
102
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
103
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
84
Rhode Island TRM
Residential Electric Efficiency Measures
Hours
Equivalent full load cooling hours are 360 hours per year.104
Measure Life
The measure life is 18 years.105
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Central AC QIV ES
Central AC QIV NES
Energy Star HVAC
Energy Star HVAC
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.25
0.25
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results106.
104
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
105
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
106
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
85
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Heat Pump Quality Installation Verification (QIV)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The verification of proper charge and airflow during installation of new Heat Pump
systems.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
12 kBtu / hr  1
1

×
× HoursC +
× Hours H  × % SAVE
ton
HSPF
 SEER

∆kW = max(∆kWC , ∆kWH )
∆kWh = Tons ×
12 kBtu / hr  1 
×
 × % SAVE
Ton
 EER 
12 kBtu / hr  1 
∆kWH = Tons ×
×
 × %SAVE
Ton
 HSPF 
∆kWC = Tons ×
Where:
Unit
∆kWh
∆kW
Tons
SEER
EER
HSPF
HoursC
HoursH
%SAVE
=
=
=
=
=
=
=
=
=
=
Completed QIV
Annual energy savings per unit: 334 kWh (calculated)
Max peak demand reduction per unit: 0.237 kW (calculated)
Cooling capacity of HP equipment: Current default is 3 tons 107
Seasonal cooling efficiency of HP equipment: Default is 13.0
Peak cooling efficiency of HP equipment: Default is 11.0
Heating efficiency of HP equipment: Default is 7.6
Equivalent full load hours for cooling
Equivalent full load hours for heating
Average demand reduction: 5%108
107
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
108
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
86
Rhode Island TRM
Residential Electric Efficiency Measures
Baseline Efficiency
The baseline efficiency case is a standard residential heat pump system (SEER = 13, EER = 11 and HSPF
= 7.6) whose installation is inconsistent with manufacturer specifications.
High Efficiency
The high efficiency case is the same baseline system, but with installation consistent with manufacturer
specifications.
Hours
The equivalent full load heating hours are 1,200 hours per year and the equivalent full load cooling hours
are 360 hours per year.109
Measure Life
The measure life is 18 years.110
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
HP QIV ES
HP QIV NES
Energy Star HVAC
Energy Star HVAC
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.173
0.173
0.50
0.50
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results.111
109
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
110
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
111
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9, adjusted to align with b/c model constraints that allow for a single kW input.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
87
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Central AC Digital Check-up/Tune–up
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Tune-up of an existing central AC system.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
12 kBtu / hr
1
×
× HoursC × %SAVE
ton
SEER
12 kBtu / hr
1
∆kW = Tons ×
×
× %SAVE
ton
EER
∆kWh = Tons ×
Where:
Unit
∆kWh
∆kW
Tons
SEER
EER
Hours
%SAVE
=
=
=
=
=
=
=
=
Completed tune-up
Annual energy savings per unit: 65 kWh (calculated)
Max peak demand reduction per unit: 0.212 kW (calculated)
Cooling capacity of AC equipment: Current default is 3 tons112
Seasonal efficiency of AC equipment: Default = 10.0
Peak efficiency of AC equipment: Default = 8.5
Equivalent full load hours for cooling
Average demand reduction: 5%113
Baseline Efficiency
The baseline efficiency case is a standard central air-conditioning system that does not operate according
to manufacturer specifications.
High Efficiency
The high efficiency case is the same baseline system but which operates according to manufacturer
specifications.
112
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
113
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
88
Rhode Island TRM
Residential Electric Efficiency Measures
Hours
The equivalent full load cooling hours are 360 hours per year.114
Measure Life
The measure life is 5 years.115
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
CAC Digital Check-up/Tune-up
Energy Star HVAC
1.00 1.00 1.00
1.00
1.00
0.25
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results116.
114
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
115
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
116
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
89
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Heat Pump Digital Check-up/Tune-up
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Tune-up of an existing heat pump system.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
12 kBtu / hr  1
1

×
× HoursC +
× Hours H  × % SAVE
Ton
HSPF
 SEER

∆kW = max(∆kWC , ∆kWH )
∆kWh = Tons ×
12 kBtu / hr  1 
×
 × % SAVE
Ton
 EER 
12 kBtu / hr  1 
∆kWH = Tons ×
×
 × %SAVE
Ton
 HSPF 
∆kWC = Tons ×
Where:
Unit
∆kWh
∆kW
Tons
SEER
EER
HSPF
HoursC
HoursH
%SAVE
=
=
=
=
=
=
=
=
=
=
Completed tune-up
Annual energy savings per unit: 373 kWh (calculated)
Max peak demand reduction per unit: 0.257 kW (calculated)
Cooling capacity of HP equipment: Current default is 3 tons117
Seasonal cooling efficiency of HP equipment: Default = 10.0
Peak cooling efficiency of HP equipment: Default = 8.5
Heating efficiency of HP equipment: Default = 7.0
Equivalent full load hours for cooling
Equivalent full load hours for heating
Average demand reduction: 5%118
Baseline Efficiency
The baseline efficiency case is a standard residential heat pump system that does not operating according
to manufacturer specifications.
117
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
118
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
90
Rhode Island TRM
Residential Electric Efficiency Measures
High Efficiency
The high efficiency case is the same baseline system but which operates according to manufacturer
specifications.
Hours
The equivalent full load hours are 1200 hours per year for heating119 and 360 hours per year for
cooling. 120
Measure Life
The measure life is 5 years121
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
HP Digital Check-up/Tune-up
Energy Star HVAC
1.00 1.00 1.00
1.00
1.00
0.206 0.50
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results122.
119
National Grid assumption based on regional PA working groups.
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
121
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
122
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9, adjusted to align with b/c model constraints that allow for a single kW input.
120
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
91
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Duct Sealing
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: A 66% reduction in duct leakage from 15% to 5% of supplied CFM.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on results of DOE2 modeling123:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Completed job
Average annual kWh reduction per unit: 212 kWh124
Average annual kW reduction per unit: 0.300 kW125
Baseline Efficiency
The baseline efficiency case is assumes a 15% leakage.
High Efficiency
The high efficiency case is a system with duct leakage reduced by 66% to 5% leakage.
Hours
Not applicable.
Measure Life
The measure life is 18 years.126
123
The PAs are looking into abilities to track and calculate savings based on project-specific detail.
RLW Analytics (2002). Market Research for the Rhode Island, Massachusetts, and Connecticut Residential HVAC Market.
Prepared for National Grid, Northeast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating; Table 2.
32
Ibid.
124
126
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
92
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Duct Sealing
Energy Star HVAC
1.00
1.00
1.00
1.00
1.00
0.25
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results.127
127
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
93
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Down Size ½ Ton
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Reduction in system size consistent with manual J calculations.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: One-Time Cost Reduction
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on results of DOE2 modeling:
∆kWh = ∆kWh / Ton × 1 2 Ton
∆kW = ∆kW / Ton × 1 2 Ton
Where:
Units
=
∆kWh/Ton =
∆kW/Ton =
Completed job
Average annual kWh reduction based on DOE2 modeling128: 203 kWh
Average annual kW reduction based on DOE2 modeling129: 0.295 kW
Baseline Efficiency
The baseline efficiency case is a system that is not sized in accordance with manual J calculation.
High Efficiency
The high efficiency case is a system that is sized in accordance with manual J calculation.
Hours
Not applicable.
Measure Life
The measure life is 18 years.130
Secondary-Energy Impacts
There are no secondary energy impacts for this measure.
128
RLW Analytics (2002). Market Research for the Rhode Island, Massachusetts, and Connecticut Residential HVAC Market.
Prepared for National Grid, Northeast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating; Table 2.
129
Ibid.
130
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
94
Rhode Island TRM
Residential Electric Efficiency Measures
Non-Energy Impacts
Benefit Type
Description
Savings
One-Time NonResource
O&M Cost savings due to smaller size unit (by ½ ton) that is purchased compared to $300/Unit
the unit that would have been purchased.131
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Down Size ½ Ton
Energy Star HVAC
1.00
1.00
1.00
1.00
1.00
0.25
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results.132
131
National Grid assumption based on regional PA working groups.
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
132
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
95
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Right Sizing
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Documentation that system size is in compliance with manual J calculations.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: O&M
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on results of DOE2 modeling:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Units
∆kWh
∆kW
=
=
=
completed job
average annual kWh reduction based on DOE2 modeling133: 123 kWh
average annual kW reduction based on DOE2 modeling134: 0.150 kW
Baseline Efficiency
The baseline efficiency case is a system that is not sized in accordance with manual J calculation.
High Efficiency
The high efficiency case is a system that is sized in accordance with manual J calculation.
Hours
Not applicable.
Measure Life
The measure life is 18 years.135
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
133
RLW Analytics (2002). Market Research for the Rhode Island, Massachusetts, and Connecticut Residential HVAC Market.
Prepared for National Grid, Northeast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating; Table 2.
134
Ibid.
135
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
96
Rhode Island TRM
Residential Electric Efficiency Measures
Non-Energy Impacts
Benefit Type
Description
Savings
One-Time NonResource
O&M Cost savings due to “right sizing” to smaller size unit (by ½ ton) that is
purchased compared to the unit that would have been purchased. 136
$30/Unit
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Right Sizing (Tier 2)
Right Sizing (Top Tier)
Energy Star HVAC
Energy Star HVAC
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.25
0.25
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results137.
136
National Grid assumption based on regional PA working groups.
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
137
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
97
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Early Replacement of Central AC or Heat Pump Unit
Version Date and Revision History
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Early replacement of Central Air Conditioning or Heat Pump Unit. This measure
represents the additional savings achieved for the early replacement of existing inefficient AC or
heat pump units over the remaining life of the existing equipment.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: Residential Cooling & Heating Equipment
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:




12 kBtu / hr 
1
1
1
1
 × HoursC + 
 × HoursH 
× 
−
−
Ton
 HSPFBASE HSPFEE 
 SEERBASE SEEREE 

∆kW = max(∆kWCOOL , ∆kWHEAT )
∆kWh = Tons ×
∆kWCOOL = Tons ×
12 kBtu / hr 
1
1
× 
−
Ton
 EERBASE EEREE
∆kWHEAT = Tons ×

12 kBtu / hr 
1
1

× 
−
Ton
HSPF
HSPF

BASE
EE 
Where:
Unit
Tons
SEERBASE
SEEREE
EERBASE
EEREE
HSPFBASE
HSPFEE
HoursC
HoursH
=
=
=
=
=
=
=
=
=
=



Replacement of existing inefficient system with new efficient system
Capacity of HP equipment: Current default is 3 tons138
Seasonal efficiency of baseline HP equipment
Seasonal efficiency of new efficient HP equipment
Peak efficiency of base HP equipment
Peak efficiency of new efficient HP equipment
Heating efficiency of baseline HP equipment
Heating efficiency of new efficient HP equipment
EFLH for cooling
EFLH for heating
138
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
98
Rhode Island TRM
Residential Electric Efficiency Measures
Baseline Efficiency
The baseline efficiency case is assumed to be a typical 10-12 year-old central air-conditioning or heat
pump unit.
High Efficiency
The high efficiency case is an ENERGY STAR® qualified central AC or heat pump unit.
Measure
Early Replacement AC
Early Replacement HP
EEREE
11
11
SEEREE
13
13
HSPFEE
n/a
n/a
∆kWC
0.30
1.24
∆kWH
0.00
0.00
∆kWh
299
876
Hours
The equivalent full load hours are 1,200 hours per year for heating139 and 360 hours per year for
cooling. 140
Measure Life
The measure life is 7 years.141
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
Early Replacement AC
Early Replacement HP
RHVAC
RHVAC
1.00 1.00 1.00
1.00 1.00 1.00
1.00
1.00
1.00
1.00
0.25
0.25
0.00
0.50
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100%, National Grid assumption based on regional working groups.
Coincidence Factors
Coincidence factors are based on evaluation study results142.
139
National Grid assumption based on regional working groups.
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-3.
141
National Grid assumption based on regional working groups: The early replacement measure life of 7 years was determined
by subtracting the estimated target age range of existing equipment between 10 and 12 years old from the 18 year measure life for
new equipment.
142
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
140
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
99
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Quality Installation with Duct Modification
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: 50% reduction in duct leakage from 20% to 10%. This measure may also include
duct modifications.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on results of DOE2 modeling:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
=
=
∆kW
=
Completed job
Average annual kWh reduction per unit: 513 kWh with duct modifications, 212
kWh without duct modifications143
Average annual kW reduction per unit: 0.850 kW with duct modifications, 0.300
kW without duct modifications144
Baseline Efficiency
The baseline efficiency case is a system with an installation that is inconsistent with manufacturer
specifications and may include leaky ducts.
High Efficiency
The high efficiency case is a system with an installation that is consistent with manufacturer
specifications and may have reduced duct leakage.
Hours
Not applicable.
143
RLW Analytics (2002). Market Research for the Rhode Island, Massachusetts, and Connecticut Residential HVAC Market.
Prepared for National Grid, Northeast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating; Table 2.
144
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
100
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 18 years.145
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
ESQI
ESQI w/ Duct modifications
Energy Star HVAC
Energy Star HVAC
1.00 1.00 1.00
1.00 1.00 1.00
1.00
1.00
1.00
1.00
0.25
0.25
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results.146
145
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page 1-3, Table 1.
146
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
101
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – TXV Valve Replacement of Fixed Orifice
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The replacement of a fixed orifice with a Thermostatic eXpansion Valve (TXV).
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
∆kWh = Tons ×
12 kBtu / hr
1
×
× Hours × 10.5%
Ton
SEER
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
Tons
SEER
Hours
10.5%
=
=
=
=
=
=
=
Installation of TXV valve
Average annual kWh reduction: 105 kWh (calculated)
Average annual kW reduction: 0.156 kW147
Cooling capacity of AC equipment: Current default is 3 tons148
Seasonal efficiency of AC equipment: Default = 13
Annual operating hours
Average percent demand reduction: 10.5%149
Baseline Efficiency
The baseline efficiency case is a system with a fixed orifice expansion.
High Efficiency
The high efficiency case is a system with a Thermostatic eXpansion Valve (TXV).
Hours
Not applicable.
147
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
148
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-5.
149
Northeast Energy Efficiency Partnerships (2006). Strategies to Increase Residential HVAC Efficiency in the Northeast.
Prepared for National Association of State Energy Offices (NASEO); Appendix B.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
102
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 7 years.150
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
TXV Replacement
Energy Star HVAC
1.00 1.00 1.00
1.00
1.00
0.25
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors based on evaluation study results.151
150
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group.
151
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
103
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Furnace Fan Motors
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of high efficiency motors on residential furnace fans, including
electronically commutated motors (ECMs) or steady state brushless furnace fan motors.
Primary Energy Impact: Electric
Secondary Energy Impact: Natural Gas (Residential Heat)
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Installed motor.
Gross annual kWh savings per unit: See Table 9.
Gross average demand reduction per unit: See Table 9.
Table 9: Savings for Residential Furnace Fan Motors
Equipment Type
Brushless Furnace Fan Motor
Warm Air Furnace ECM
152
∆kW
153
∆kWh
0.214 kW 302 kWh
0.214 kW 168 kWh
Baseline Efficiency
The baseline efficiency case is the installation of a furnace with a standard efficiency steady state motor.
High Efficiency
The high efficiency case is the installation an electronically commutated motor or brushless fan motor on
a residential furnace.
Hours
Not applicable.
152
153
The Cadmus Group (2011). MEMO: BFM Initial Results. Prepared for Gail Azulay, NSTAR and Bob Wirtshafter, EEAC.
Ibid
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
104
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 18 years.154
Secondary Energy Impacts
A heating penalty results due to reduced heat loss of the efficient furnace motor.
Measure
Energy Type
Savings (∆MMBtu/Unit)155, 156
Brushless Furnace Fan Motor
Warm Air Furnace ECM
Natural Gas (Residential Heat)
Natural Gas (Residential Heat)
-0.716
-1.575 MMBtu
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
Brushless Furnace Fan Motor
Warm Air Furnace ECM
Energy Star HVAC
Energy Star HVAC
1.00 1.00 1.00
1.00 1.00 1.00
1.00
1.00
1.00
1.00
0.25
0.25
0.16
0.16
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% based on National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors are based on evaluation results157.
154
Sachs, Harvey (2003). Energy Savings from Efficient Furnace Air Handlers in Massachusetts.
Ibid. An adjustment is made to the savings value of 23 therms (2.3 MMBtu) given in the study. The original savings value is
multiplied by 420 heating hours divided by 600 total running hours (420/600 = 0.70). An AFUE adjustment of 90/92 is also
multiplied to the original value to create a more realistic final value.
156
The Cadmus Group (2011). MEMO: BFM Initial Results. Prepared for Gail Azulay, NSTAR and Bob Wirtshafter, EEAC.
157
ADM Associates, Inc. (2009). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut
Light & Power, and United Illuminating; Table 4-9.
155
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
105
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Room AC (Rebate)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of ENERGY STAR® qualified room air conditioners. ENERGY
STAR® qualified air conditioners are typically 10% more efficient than models meeting federal
standards.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star Products, Energy Star Homes
Algorithms for Calculating Primary Energy Impact
Unit savings are based on the following algorithms which use averaged inputs:
∆kWh = ∆kWh
∆kW = ∆kWh / Hours
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Rebated room AC unit
Average annual kWh savings per unit: 64 kWh158
Average demand reduction per unit: 0.24 kW
Equivalent full load hours
Baseline Efficiency
The baseline efficiency case is a window AC unit that meets the minimum federal efficiency standard for
efficiency which currently is EER 9.8.
High Efficiency
The high efficiency level is a room AC unit meeting or exceeding the federal efficiency standard by 10%
or more. Average size is 10,000 Btu and average EERs is 10.8.
Hours
Equivalent full load hours are 200 hours per year.159
Measure Life
The measure life is 9 years.160
158
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Room Air Conditioner.
RLW Analytics (2008). Coincidence Factor Study Residential Air Conditioners. Prepared for Northeast Energy Efficiency
Partnerships’ New England Evaluation and State Program Working Group; Page 32, Table 22 - found by averaging the EFLH
values for MA states (Boston and Worcester): (228+172)/2 = 200.
159
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
106
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Room AC
Room AC
Energy Star Homes
Energy Star Products
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.13
0.13
0.00
0.00
In-Service Rates
In-service rates are set to 100% based on the assumption that all purchased units are installed.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are National Grid assumption based on regional PA working groups.
Coincidence Factors
CFs from a 2008 residential room AC coincidence factor study161.
160
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Room Air Conditioner.
RLW Analytics (2008). Coincidence Factor Study Residential Air Conditioners. Prepared for Northeast Energy Efficiency
Partnerships’ New England Evaluation and State Program Working Group. On-Peak kW savings coincidence factor used.
161
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
107
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Window AC (Retrofit)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Replacement of existing inefficient room air conditioners with more efficient
models. This is only offered as a measure when an AC timer would not reduce usage during the
peak period.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Low Income
Market: Retrofit
End Use: HVAC
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
=
∆kWh =
∆kW
=
Removal of existing window AC unit and installation of new efficient window AC unit
Average annual kWh savings per unit: 100 kWh162
Max load kW reduction: 0.214 kW163
Baseline Efficiency
The baseline efficiency case is the existing air conditioning unit.
High Efficiency
The high efficiency case is the high efficiency room air conditioning unit.
Hours
Not applicable.
Measure Life
The measure life is 9 years.164
162
Quantec, LLC (2005). Evaluation of National Grid’s 2003 Appliance Management Program: Room Air Conditioning
Metering and Non-Energy Benefits Study. Prepared for National Grid.
163
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
164
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Room Air Conditioner.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
108
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impact
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Window AC Replacement
Single Family AMP
1.00
1.00
1.00
1.00
1.00
1.00
0.02
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.165
165
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
109
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – WiFi Enabled Thermostat with Cooling
Version Date and Revision History
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Replacement of existing thermostats with programmable thermostats to control
heating and cooling
Primary Energy Impact:
Secondary Energy Impact:
Non-Energy Impact:
Sector:
Market: Retrofit
End Use: HVAC
Program:
Algorithms for Calculating Primary Energy Impact
.
Baseline Efficiency
The baseline efficiency case is a non-programmable thermostat.
High Efficiency
The high efficiency case is a programmable thermostat.
Hours
Not applicable.
Measure Life
The measure life is 15 years.166
Secondary Energy Impacts
Measure
Energy Type Savings
Programmable Thermostat (Oil) Oil
7.7 MMBtu
∆MMBtu/Unit
167
7.7
Non-Energy Impacts
Benefit Type
Description
Savings
Annual Non-Resource
See Appendix XX: Non-Resource Impacts
One-Time Non-Resource See Appendix XX: Non-Resource Impacts
See Appendix XX: Non-Resource Impacts
See Appendix XX: Non-Resource Impacts
166
Environmental Protection Agency (2010). Life Cycle Cost Estimate for Programmable Thermostats. Accessed on 10/12/2011.
RLW Analytics (2007). Validating the Impact of Programmable Thermostats. Prepared for GasNetworks; Page 2. Conversion
factor CCF to therms is 1.024. Oil MMBtu savings are assumed to be the same as Natural Gas MMBtu savings.
167
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
110
Rhode Island TRM
Residential Electric Efficiency Measures
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
PA
ISR
SPF RRE
Programmable Thermostat (Oil)
LI 1-4 Retrofit
All
1.00 1.00
1.00
RRSP
RRWP
CFSP
CFWP
1.00
1.00
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are set to zero since there are no electric savings for this measure.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
111
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Weatherization (Electric)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of weatherization measures such as air sealing and insulation in
electrically heated homes.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Annual Fire, Illness and Moving Avoidance Benefits
Sector: Low Income
Market: Retrofit
End Use: HVAC
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Electrically-heated household with weatherization measures installed
Average annual kWh reduction: 374 kWh168
Average annual kW reduction: 0.047 kW169
Baseline Efficiency
The baseline efficiency case is any existing home shell measures.
High Efficiency
The high efficiency case includes increased weatherization insulation levels.
Hours
Not applicable.
Measure Life
The measure life is 20 years.170
168
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1.
169
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
170
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
112
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Annual Non-Resource
Description
Savings
171
Low-Income Annual Fire, Illness and Moving Avoidance Benefits
$203/Participant
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Electric Wx
Single Family – AMP
1.00
1.00
1.00
1.00
1.00
0.03
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.172
171
172
Ibid.
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
113
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Weatherization (Oil and other Fossil Fuels)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of weatherization measures such as air sealing and insulation in oil or
propane heated homes. Electric savings are achieved from reduced fan run time for heating and
cooling systems.
Primary Energy Impact: Oil; other fossil fuels
Secondary Energy Impact: Electric
Non-Energy Impact: Annual Fire, Illness and Moving Avoidance Benefits
Sector: Low Income
Market: Retrofit
End Use: HVAC
Program: Single-Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Oil heated household with weatherization measures installed
Average annual kWh reduction: 70 kWh173
Average annual kW reduction: 0.009 kW174
Baseline Efficiency
The baseline efficiency case is any existing home shell measures.
High Efficiency
The high efficiency case includes increased weatherization insulation levels.
Hours
Not applicable.
Measure Life
The measure life is 20 years.175
173
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid.
174
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
175
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Page A-2.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
114
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
Measure Energy Type Savings176
Oil Wx
Oil Wx
Oil
Propane
∆MMBtu/Unit
98 gallons/home
98 gallons/home
13.7
13.7
Non-Energy Impacts
Benefit Type
Annual Non-Resource
Description
Savings
177
Low-Income Annual Fire, Illness and Moving Avoidance Benefits
$203/Participant
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Oil Wx
Single Family - AMP
1.00
1.00
1.00
1.00
1.00
0.03
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.178
176
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid.
177
Ibid.
178
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
115
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Heating System (Rebate)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Replacement of existing oil or propane heating system with a new high efficiency
system. Electric savings can be attributed to reduced fan run time and reduced usage of electric
space heaters.
Primary Energy Impact: Oil, Propane
Secondary Energy Impact: Electric
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: Energy Star HVAC
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Installation of new high efficiency oil or propane heating system
Average annual kWh savings per unit. See Table 10.
Average annual kW reduction per unit. See Table 10.
Table 10: Electric Savings for Residential Heating System (Rebate)
Measure
Boiler (Forced Hot Water) (AFUE >=85%)
Boiler (Steam) (AFUE >=82%)
Furnace (Forced Hot Air) w/ECM (AFUE >=85%)
Furnace (Forced Hot Air) w/ECM (AFUE >=92%)
∆kW/Unit179
0.010
0.010
0.116
0.116
∆kWh/Unit
20
20
600
600
Baseline Efficiency
The baseline efficiency case is the existing inefficient heating equipment.
High Efficiency
The high efficiency case is the new efficient heating equipment.
Hours
Not applicable.
179
Electric savings for Furnaces w/ECMs are the same savings for “Efficient Fan Motors” in the Residential Electric Efficiency
Measures section.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
116
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 18 years.180
Secondary Energy Impacts
Table 11: Oil/Propane Savings for Residential Heating System (Rebate)
Measure
Energy Type Savings (∆MMBtu/Unit)
Boiler (Forced Hot Water) (AFUE >=85%)
Boiler (Steam) (AFUE >=82%)
Oil or Propane
Oil or Propane
8.79
8.79
Furnace (Forced Hot Air) w/ECM (AFUE >=85%) Oil or Propane
Furnace (Forced Hot Air) w/ECM (AFUE >=92%) Oil or Propane
7.22
7.22
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP
CFSP
CFWP
Boiler (Forced Hot Water)
Boiler (Steam)
Furnace (Forced Hot Air) w/ECM
Energy Star HVAC
Energy Star HVAC
Energy Star HVAC
1.00 1.00 1.00
1.00 1.00 1.00
1.00 1.00 1.00
0.03
0.011
0.25
1.00
1.00
0.50
1.00
1.00
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.181
180
181
Environmental Protection Agency (2009). Life Cycle Cost Estimate for an ENERGY STAR Qualified Gas Residential Furnace.
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Electric Efficiency Measures
HVAC – Heating System (Retrofit)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Replacement of existing oil heating system with a new high efficiency system.
Electric savings can be attributed to reduced fan run time and reduced usage of electric space
heaters.
Primary Energy Impact: Oil
Secondary Energy Impact: Electric
Non-Energy Impact: None
Sector: Low-Income
Market: Retrofit
End Use: HVAC
Program: Single Family - AMP
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Installation of new high efficiency oil or propane heating system
Average annual kWh savings per unit. See Table 10.
Average annual kW reduction per unit. See Table 10.
Table 12: Electric Savings for Oil Heating System Replacement
Measure
Heating System Replacement (Oil)
Program
Single Family – AMP
∆kW/Unit
0.024 182
∆kWh/Unit
194 183
Baseline Efficiency
The baseline efficiency case is the existing inefficient heating equipment.
High Efficiency
The high efficiency case is the new efficient heating equipment.
Hours
Not applicable.
182
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
183
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid.
November 2011
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Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 18 years.184
Secondary Energy Impacts
Measure
Program
Energy Type
Savings (∆MMBtu/Unit)
Heating System Replacement
Single Family – AMP
Oil
12.2 185
Non-Energy Impacts
There are no non-energy impacts counted for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
Heating System Replacement (Oil)
Single Family – AMP
1.00 1.00 1.00
1.00
1.00
0.03
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.186
184
Environmental Protection Agency (2009). Life Cycle Cost Estimate for an ENERGY STAR Qualified Gas Residential Furnace.
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; 87 gallons/home is converted to MMBtu.
186
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
185
November 2011
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ALL RIGHTS RESERVED
119
Rhode Island TRM
Residential Electric Efficiency Measures
HVAC/Hot Water – ENERGY STAR® Homes Heating, Cooling, and DHW
Measures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: To capture lost opportunities, encourage the construction of energy-efficient homes,
and drive the market to one in which new homes are moving towards net-zero energy.
Primary Energy Impact: Electric
Secondary Energy Impact: Natural Gas, Oil, Propane
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC, Hot Water
Program: Energy Star Homes
Algorithms for Calculating Primary Energy Impact
As part of the ENERGY STAR® certification process, projected energy use is calculated for each home
completed through the program and a geometrically matching baseline home (User Defined Reference
Home) using Beacon, an ICF International proprietary DOE-2 based building energy simulation tool. The
difference between the projected energy consumption of these two homes represents the energy savings
produced by the certified home. This process is used to calculate electric demand as well as electric and
fossil fuel energy savings due to heating, cooling, and water heating for all homes, both single family and
multifamily. This process is documented in “Energy/Demand Savings Calculation and Reporting
Methodology for the Massachusetts ENERGY STAR® Homes Program.”187
Baseline Efficiency
The User Defined Reference Home was revised for 2006 as a result of the baseline study completed in
2006.188 189
High Efficiency
The high efficiency case is represented by the specific energy characteristics of each “as-built” home
completed through the program.
Hours
Not applicable.
187
ICF (2008). Energy/Demand Savings Calculation and Reporting Methodology for the Massachusetts ENERGY STAR ®
Homes Program. Prepared for Joint Management Committee.
188
Nexus Market Research and Dorothy Conant (2006). Massachusetts ENERGY STAR ® Homes: 2005 Baseline Study: Part I:
Inspection Data Analysis Final Report. Prepared for Joint Management Committee.
189
Nexus Market Research and Dorothy Conant (2006). Massachusetts ENERGY STAR ® Homes: 2005 Baseline Study: Part
II: Homeowner Survey Analysis Incorporating Inspection Data Final Report. Prepared for Joint Management Committee.
November 2011
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Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
Measure Type
Cooling
Heating
Water Heating
Measure Life (years)190
25
25
15
Secondary Energy Impacts
Gas, Oil and Propane savings for heating and water heating measures are custom calculating using the
same methodology described for the electric energy and demand savings.
Non-Energy Impacts
There are no non-energy impacts for these measures.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
ES Homes – Cooling
ES Homes – Heating
ES Homes – Water Heating
Energy Star Homes
Energy Star Homes
Energy Star Homes
1.00 1.00
1.00 1.00
1.00 1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
CFSP
CFWP
custom
custom
custom
custom
custom
custom
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are 100% because energy and demand savings are custom calculated based on project specific
detail.
Coincidence Factors
Coincidence factors are custom calculated based on project-specific detail.
190
National Grid assumption based on regional PA working groups.
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ALL RIGHTS RESERVED
121
Rhode Island TRM
Residential Electric Efficiency Measures
Hot Water – DHW Measures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of domestic hot water (DHW) measures including low flow
showerheads, faucet aerators, and tank and pipe wraps in homes with electric, gas, or oil water
heating equipment.
Primary Energy Impact: Electric, Natural Gas, Oil
Secondary Energy Impact: None
Non-Energy Impact: Residential Water
Sector: Low Income
Market: Retrofit
End Use: Hot Water
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
There are no electric savings in homes with oil or gas water heating equipment. For homes with electric
water heating, unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Household with hot water efficiency measures installed
Average annual kWh savings per unit. See Table 13.
Average annual kW reduction per unit. See Table 13.
Table 13: Electric Savings for DHW Measures
Measure
DHW Measures (Electric)
DHW Measures (Gas)
DHW Measures (Oil)
∆kW/Unit
∆kWh/Unit
0
0
0
0
0.017 191
134 192
Baseline Efficiency
The baseline efficiency case is the existing hot water equipment.
High Efficiency
The high efficiency case includes low flow showerheads and faucet aerators as well as tank and pipe
wraps.
191
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
192
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid.
November 2011
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Rhode Island TRM
Residential Electric Efficiency Measures
Hours
Not applicable.
Measure Life
The measure life is 7 years.193
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Measure
Energy Type
Savings (∆MMBtu/Unit)
DHW Measures (Electric)
DHW Measures (Gas/Other)
n/a
NG – Residential DHW
n/a
0.9
194
DHW Measures (Oil)
Oil
0.9
195
Non-Energy Impacts
Benefit Type
Description
Savings
Residential Water
Residential water savings per participant
8,785 Gallons/Participant
The DHW measures NEI is applied to DHW measures that are bundled together and are in units of households,
assuming one showerhead and one faucet aerator per household.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
DHW Measures (Electric)
Single Family - AMP
1.00
1.00
1.00
1.00
1.00
0.75
1.00
DHW Measures (Gas)
DHW Measures (Oil)
Single Family - AMP
Single Family - AMP
1.00
1.00
1.00
1.00
1.00
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.196
193
National Grid assumption based on regional PA working groups.
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid.
195
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; 6.4 gallons is converted to MMBtu.
196
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
194
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
123
Rhode Island TRM
Residential Electric Efficiency Measures
Hot Water – Dishwashers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of ENERGY STAR® qualified dishwashers in residential homes during
new construction or major renovation. ENERGY STAR® dishwashers are on average, 10% more
energy-efficient than non-qualified models.
Primary Energy Impact: Electric
Secondary Energy Impact: Natural Gas, Oil, Propane
Non-Energy Impact: Water Savings
Sector: Residential
Market: Lost Opportunity
End Use: Hot Water
Program: Energy Star Homes
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
∆kWh = kWhBASE − kWhEE
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
kWhBASE
kWhEE
= Installation of ENERGY® dishwasher
= Gross average annual kWh savings per unit197: 33 kWh with non-electric water heating; 74
kWh with electric water heating.
= Average annual kW savings per unit: 0.001 kW198
= Average unit energy consumption for non-qualified product
= Average unit energy consumption for ENERGY STAR® qualified product
Baseline Efficiency
The baseline efficiency case is a conventional standard sized non-ENERGY STAR® qualified model
meeting Federal Standards energy performance metric criteria effective January 1, 2010 for dishwashers
with maximum energy consumption of less than or equal to 355 kWh/year and maximum water
consumption of 6.5 gallons of water/cycle. 199
High Efficiency
The high efficiency case is an ENERGY STAR® qualified standard sized dishwasher meeting the energy
performance metric criteria effective July 1, 2011 for dishwashers with maximum energy consumption of
greater than or equal to 307 kWh/year and maximum water consumption of 5.0 gallons/cycle.
197
Environmental Protection Agency (2010). Life Cycle Cost Estimate for ENERGY STAR Residential Dishwasher.
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
199
ENERGY STAR Website (2011). Dishwashers Key Product Criteria. Accessed on 10/12/2011.
198
November 2011
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Rhode Island TRM
Residential Electric Efficiency Measures
Hours
Dishwashers are assumed to run 215 cycles per year.200
Measure Life
The measure life is 10 years.201
Secondary Energy Impacts
Gas, Oil and Propane savings occur in homes where the water is heated by that fuel. Homes with gas, oil
or propane heated water are assumed to save 0.19 MMBtu/year (1.9 therm/year).202
Non-Energy Impacts
Benefit Type
Residential Water
Description
Savings
Reduction in annual water usage compared to conventional unit
203
430 Gallons/Unit
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Dishwashers
Energy Star Homes
1.00
1.00
1.00
1.00
1.00
0.75
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are National Grid assumption based on regional PA working groups.
Coincidence Factors
Coincidence factors are National Grid assumption based on regional PA working groups.
….
….
200
Environmental Protection Agency (2010). Life Cycle Cost Estimate for ENERGY STAR Residential Dishwasher.
Ibid.
202
Ibid; oil and propane savings are assumed to be the same as gas savings provided in calculator.
203
Ibid.
204
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
205
Environmental Protection Agency (2011). Life Cycle Cost Estimate for ENERGY STAR Residential Clothes Washer.
206
Ibid.
207
Ibid.
208
Ibid.
209
Ibid.
210
Ibid; oil and propane savings are assumed to be the same as gas savings provided in calculator.
211
Ibid.
201
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
125
Rhode Island TRM
Residential Electric Efficiency Measures
Hot Water – Waterbed Mattress Replacement
Version Date and Revision History
10/22/2010
Draft Date:
Effective Date: 1/1/2011
TBD
End Date:
Measure Overview
Description: Replacement of waterbed mattress with a standard mattress.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Low-Income Annual Discounted Rate Cost Reduction
Sector: Low Income
Market: Retrofit
End Use: Hot Water
Program: Low-Income 1-4 Family Retrofit, Low-Income Multifamily Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kW
Where:
Unit
∆kWh
∆kW
=
=
=
Mattress replacement
Average annual energy reduction per unit: 872 kWh212
Average demand reduction per unit: 0.109 kW213
Baseline Efficiency
The baseline efficiency case is an existing waterbed mattress.
High Efficiency
The high efficiency case is a new standard mattress.
Hours
Not applicable.
Measure Life
The measure life is 10 years.214
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
212
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid.
213
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
214
See the response to the question “How do I know when I need to buy a new mattress?” at the following link for more details:
http://www.serta.com/best-mattress-FAQs-mattresses-Serta-Number--1-Best-Selling-Mattress.html (10/12/2011).
November 2011
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Rhode Island TRM
Residential Electric Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Waterbed
AMP
1.00
1.00
1.00
1.00
1.00
0.75
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to 100% since deemed savings are based on evaluation results.
Coincidence Factors
Coincidence factors are estimated using the demand allocation methodology described in the 2000 EnergyWise
program impact evaluation.215
215
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
127
Rhode Island TRM
Residential Electric Efficiency Measures
MF Lighting – EW Fixtures and CFLs
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Removal of existing inefficient fixtures/bulbs with the installation of new efficient
fixtures/bulbs.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: O&M, Low-Income Annual Discounted Rate Cost Reduction
Sector: Residential, Low Income
Market: Retrofit
End Use: Lighting
Program: EnergyWise
Algorithms for Calculating Primary Energy Impact
Unit savings are calculated using the following algorithms and assumptions:
∆kWh = [(QTYPRE × WattsPRE × HoursPRE ) − (QTYEE × WattsEE × HoursEE )] / 1000 × 52
∆kW = [(QTYPRE × WattsPRE ) − (QTYEE × WattsEE )] / 1000
Where:
QTYPRE
QTYEE
WattsPRE
WattsEE
HoursPRE
HoursEE
52
=
=
=
=
=
=
=
Quantity of pre-retrofit fixtures/bulbs
Quantity of efficient fixtures/bulbs installed
Rated watts of pre-retrofit fixtures/bulbs
Rated watts of efficient fixtures/bulbs installed
Weekly hours of operation for pre-retrofit case lighting fixtures/bulbs
Weekly hours of operation for efficient lighting fixtures/bulbs
Weeks per year
Baseline Efficiency
The baseline efficiency case is the existing fixture and bulbs.
High Efficiency
The high efficiency case is the new fixture and lamps.
Measure Life
The measure life is 7 years for CFLs and 20 years for fixtures.
Hours
Operating hours are estimated by the vendor for each facility. Typical assumptions are 24 hours/day for
common area lighting, 12 hours/day for exterior lighting, and 3 hours/day for in-unit lighting, but may be
adjusted based on type of housing. Estimates are verified with facility maintenance staff when possible.
November 2011
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Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Description
Annual Non-Resource
Savings
Low-Income Annual Discounted Rate Cost Reduction
One-Time Non-Resource (CFL)
One-Time Non-Resource (Fixture)
216
$(R1-R2)/kWh
O&M Cost Reduction
217
$3.00/Bulb
O&M Cost Reduction
218
$3.50/Fixture
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
CFLs (Electric)
CFLs (Non-Electric)
Fixtures (Electric)
Fixtures (Non-Electric)
EnergyWise
EnergyWise
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.91
0.99
0.91
0.99
0.91
0.99
0.91
0.99
0.91
0.99
0.91
0.99
0.35
0.35
0.35
0.35
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from the National Grid Energy Wise 2008 Program Evaluation.219
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation.220
216
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR and
WMECO.
217
Massachusetts Electric Utilities (2003). MEMO: Non-Electric Benefit Performance Metrics – Residential 1. Prepared for
Massachusetts Non-Utility Parties.
218
Ibid.
219
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
220
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
129
Rhode Island TRM
Residential Electric Efficiency Measures
MF Products – EW Refrigerators and Freezers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Removal of old inefficient refrigerator or freezer with the installation of new
efficient refrigerator or freezer.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Low Income Only: Annual Discounted Rate Cost Reduction, One-Time
Avoided Refrigerator Purchase
Sector: Residential, Low Income
Market: Retrofit
End Use: Refrigeration
Program: EnergyWise
Algorithms for Calculating Primary Energy Impact
Unit savings are calculated using the following algorithms and assumptions:
∆kWh = kWhPRE − kWhPOST
∆kW = ∆kWh × kW / kWh
Where:
Unit
kWhPRE
kWhPOST
kW/kWh
=
=
=
=
Replacement of existing refrigerator with new ENERGY STAR® refrigerator
Annual kWh consumption of existing equipment. Value entered by the user.
Annual kWh consumption of new installed equipment. Value entered by the user.
Average kW reduction per kWh reduction: 0.00013 kW/kWh221
Baseline Efficiency
The baseline efficiency case is an existing refrigerator for which the annual kWh may be looked up in a
refrigerator database. If the manufacturer and model number are not found, the refrigerator is metered for
1.5 hours in order to determine the annual kWh.
High Efficiency
The high efficiency case is a new more efficiency refrigerator. The manufacture and model number is
looked up in a refrigerator database to determine annual kWh.
Measure Life
The measure life is 12 years for non low income222 and 19 years for low income. 223
221
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
222
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Residential Refrigerator.
223
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
130
Rhode Island TRM
Residential Electric Efficiency Measures
Hours
Not applicable.
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Annual Non-Resource
One-Time Non-Resource
Description
Savings
Low-Income Annual Discounted Rate Cost Reduction
One-Time Avoided Refrigerator Purchase
224
$(R1-R2)/kWh
225
$200/Unit
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Refrig/Freezers (Electric Heat)
Refrig/Freezers (Non-Electric Heat)
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
0.91
0.99
0.91
0.99
0.91
0.99
1.00
1.00
0.92
0.92
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from the National Grid Energy Wise 2008 Program Evaluation.226
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation.227
224
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR and
WMECO.
225
Ibid.
226
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
227
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
131
Rhode Island TRM
Residential Electric Efficiency Measures
MF HVAC – EW Insulation (Walls, Roof, Floor)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Insulation upgrades applied in existing electrically-heated facilities.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Low Income Only: Annual Discounted Rate Cost Reduction,
Annual Fire, Illness and Moving Avoidance Benefits, One-Time Property Value Benefit
Sector: Residential, Low Income
Market: Retrofit
End Use: HVAC
Program: Multi-Family Retrofit, Low-Income Multifamily Retrofit
Algorithms for Calculating Primary Energy Impact

1
1
∆kWh = SQFT × kWh / SQFT × 
−
 R − VALUEBASE R − VALUEEE
∆kW = ∆kWh × kW / kWh
Where:
SQFT
R-VALUEBASE
R-VALUEEE
kWh/SQFT
kW/kWh
Insulation Type
Basement
Attic
WALL (N, S)
WALL (W, E)
=
=
=
=
=



Square feet of insulation installed
R-Value of the existing insulation
R-Value of the new installed insulation
Average annual kWh reduction per SQFT of insulation. See Table below.
Average annual kW reduction per kWh reduction: 0.000125 kW/kWh228
kWh/Sqft229
10.62
38.803
11.477
10.025
Baseline Efficiency
The baseline efficiency case is the R-value of the existing insulation.
High Efficiency
The high efficiency case is insulation installed with a higher R-Value.
228
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
229
National Grid’s Multifamily Screening Tool. This was developed in the early 1990’s. Documentation of the specific variables
is unavailable. Evaluation results have consistently shown realization rates close to 100%.
November 2011
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ALL RIGHTS RESERVED
132
Rhode Island TRM
Residential Electric Efficiency Measures
Hours
Not applicable.
Measure Life
The measure life is 25 years.230
Secondary Energy Impacts
There are no secondary energy impacts for this measure
Non-Energy Benefits
Savings231
Benefit Type
Description
Annual Non-Resource
Annual Non-Resource
Low-Income Annual Discounted Rate Cost Reduction
Low-Income Annual Fire, Illness and Moving Avoidance
Benefits
Low-Income One-Time Property Value Benefit
One-Time NonResource
$(R1-R2)/kWh
$203/Participant
$20.70 x $Cost/kWh x
∆kWh
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Insulation (Electric)
Insulation (Non-Electric)
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
0.91
0.99
0.91
0.99
0.91
0.99
0.03
0.03
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from the National Grid Energy Wise 2008 Program Evaluation.232
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation.233
230
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group.
231
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR and
WMECO.
232
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
233
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
133
Rhode Island TRM
Residential Electric Efficiency Measures
MF HVAC – EW Air Sealing
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Thermal shell air leaks are sealed through strategic use and location of air-tight
materials in electrically-heated facilities.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Low Income Only: Annual Discounted Rate Cost Reduction
Sector: Residential, Low Income
Market: Retrofit
End Use: HVAC
Program: Multi-Family Retrofit, Low-Income Multifamily Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are calculated using the following algorithms and assumptions:
∆kWh = Stories × SQFT × (CFM / SQFTPRE − CFM / SQFTPOST ) × ∆kWh / CFM
∆kW = ∆kWh × kW / kWh
Where:
Stories
SQFT
CFM/SQFTPRE
=
=
=
CFM/SQFTPOST
=
∆kWh/CFM
kW/kWh
=
=
Total stories in the multi-family building
Total SQFT of building
Estimate of pre-retrofit air leakage in CFM/SQFT based on number of stories in the
building and air-tightness ratings of the existing roof and floor.
Estimate of post-retrofit air leakage in CFM/SQFT based on number of stories in the
building and air-tightness ratings of the improved roof and floor.
Average annual kWh reduction per CFM: 2.48633 kWh/CFM234
Average kW reduction per kWh reduction: 0.000125 kW/kWh235
Baseline Efficiency
The baseline efficiency case is a facility that has not received comprehensive air-sealing treatment.
High Efficiency
The high efficiency case is a facility with thermal shell air leaks that are sealed, leading to a
reduction in air leakage
Hours
Not applicable.
234
National Grid’s Multifamily Screening Tool. This was developed in the early 1990’s. Documentation of the specific variables
is unavailable. Evaluation results have consistently shown realization rates close to 100%.
235
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
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134
Rhode Island TRM
Residential Electric Efficiency Measures
Measure Life
The measure life is 15 years.236
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Benefits
Benefit Type
Annual Non-Resource
Description
Savings
Low-Income Annual Discounted Rate Cost Reduction
237
$(R1-R2)/kWh
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Air Sealing (Electric Heat)
Air Sealing (Non-Electric Heat)
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
0.91
0.99
0.91
0.99
0.91
0.99
0.03
0.03
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates are from the National Grid Energy Wise 2008 Program Evaluation.238
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation.239
236
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group.
237
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR, and
WMECO.
238
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
239
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
135
Rhode Island TRM
Residential Electric Efficiency Measures
MF HVAC – EW Programmable Thermostats
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of programmable thermostats in electrically heated facilities.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Low Income Only: Annual Discounted Rate Cost Reduction
Sector: Residential, Low Income
Market: Retrofit
End Use: HVAC
Program: Multi-Family Retrofit, Low-Income MultiFamily Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kWh × kW / kWh
Where:
Unit
∆kWh
kW/kWh
=
=
=
Installation of programmable thermostat.
Average annual kWh reduction per unit: 288 kWh240
Average annual kW reduction per kWh reduction: 0.000125 kW/kWh241
Baseline Efficiency
The baseline efficiency case is a system without a set back programmable thermostat.
High Efficiency
The high efficiency case is a system with a set-back programmable and fixed set point (common areas)
thermostat.
Hours
Not applicable.
Measure Life
The measure life is 10 years.242
240
National Grid’s Multifamily Screening Tool. This was developed in the early 1990’s. Documentation of the specific variables
is unavailable. Evaluation results have consistently shown realization rates close to 100%.
241
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
242
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
136
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Annual Non-Resource
Description
Savings
Low-Income Annual Discounted Rate Cost Reduction
243
$(R1-R2)/kWh
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Thermostat (Electric)
Thermostat (Non-Electric)
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
0.91
0.99
0.91
0.99
0.91
0.99
0.03
0.03
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from the National Grid Energy Wise 2008 Program Evaluation244.
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation245.
243
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR, and
WMECO.
244
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
245
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
137
Rhode Island TRM
Residential Electric Efficiency Measures
MF HVAC – EW Heat Pump Tune-Up
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Heat pump tune-up for electrically-heated homes only.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Low Income Only: Annual Discounted Rate Cost Reduction
Sector: Residential, Low Income
Market: Retrofit
End Use: HVAC
Program: Multi-Family Retrofit, Low-Income Multifamily Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kWh × kW / kWh
Where:
Unit
∆kWh
kW/kWh
=
=
=
Heat pump tune-up performed
Average annual kWh reduction per unit: 1162 kWh246
Average kW reduction per kWh reduction: 0.000125 kW/kWh247
Baseline Efficiency
The baseline efficiency case is an existing heat pump that is not tuned up.
High Efficiency
The high efficiency case is an existing heat pump that is tuned up.
Hours
Not applicable.
Measure Life
The measure life is 5 years.248
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
246
National Grid’s Multifamily Screening Tool. This was developed in the early 1990’s. Documentation of the specific variables
is unavailable. Evaluation results have consistently shown realization rates close to 100%.
247
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
248
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
138
Rhode Island TRM
Residential Electric Efficiency Measures
Non-Energy Benefits
Benefit Type
Annual Non-Resource
Description
Savings
Low-Income Annual Discounted Rate Cost Reduction
249
$(R1-R2)/kWh
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Heat Pump Tune-up (Electric)
EnergyWise
1.00
1.00
0.91
0.91
0.91
0.03
1.00
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from the National Grid Energy Wise 2008 Program Evaluation.250
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation.251
249
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR, and
WMECO.
250
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
251
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
139
Rhode Island TRM
Residential Electric Efficiency Measures
MF DHW – EW DHW (Showerheads and Aerators)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: An existing showerhead or aerator with a high flow rate is replaced with a new low
flow showerhead or aerator in a facility with electric water heating.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Residential Water, Low Income Only: Annual Discounted Rate Cost
Reduction
Sector: Residential, Low Income
Market: Retrofit
End Use: Hot Water
Program: Multi-Family Retrofit, Low-Income MultiFamily Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kWh × kW / kWh
Unit
∆kWh
kW/kWh
=
=
=
Showerhead or aerator installation.
Average annual kWh reduction per unit: 80.3 kWh252
Average kW reduction per kWh reduction: 0.000125 kW/kWh253
Baseline Efficiency
The baseline efficiency case is an existing shower head or faucet aerator with a high flow.
High Efficiency
High efficiency is a low flow showerhead or faucet aerator.
Hours
Not applicable.
Measure Life
The measure life is 7 years.254
252
National Grid’s Multifamily Screening Tool. This was developed in the early 1990’s. Documentation of the specific variables
is unavailable. Evaluation results have consistently shown realization rates close to 100%.
253
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
254
National Grid assumption based on regional PA working groups.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
140
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Benefits
Benefit Type
Description
Savings
Residential Water
Gallons water saved per year per unit that received DHW
measures255
8785
Gallons/Participant
Annual NonResource
Low-Income Annual Discounted Rate Cost Reduction256
$(R1-R2)/kWh
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Showerhead/Aerator (Electric)
Showerhead/Aerator (Non-Electric)
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
0.91
0.99
0.91
0.99
0.91
0.99
0.75
0.75
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from the National Grid Energy Wise 2008 Program Evaluation257.
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation258.
255
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Page 133, multiplied by 0.6275 to account for Massachusetts Electric Company (MECo) territory
family size-2000 US Census data.
256
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR, and
WMECO.
257
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
258
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
141
Rhode Island TRM
Residential Electric Efficiency Measures
MF Hot Water – EW DHW (Tank and Pipe Wrap)
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: A wrap is added to the water heater tank or pipes in facilities with electric
water heating.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Low Income Only: Annual Discounted Rate Cost Reduction
Sector: Residential, Low Income
Market: Retrofit
End Use: Hot Water
Program: Multi-Family Retrofit, Low-Income MultiFamily Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆kWh = ∆kWh
∆kW = ∆kWh × kW / kWh
Where:
Unit
kWh
kW/kWh
=
=
=
Each installation for tank wraps, per linear foot for pipe wrap.
Average annual kWh reduction per unit: 55 kWh259
Average annual kW reduction per kWh reduction: 0.000125 kW/kWh260
Baseline Efficiency
The baseline efficiency case is no wrap on the tank or pipes.
High Efficiency
High efficiency is the addition of a wrap.
Hours
Not applicable.
Measure Life
The measure life is 7 years.261
259
National Grid’s Multifamily Screening Tool. This was developed in the early 1990’s. Documentation of the specific variables
is unavailable. Evaluation results have consistently shown realization rates close to 100%.
260
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
261
National Grid assumption based on regional PA working groups.
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ALL RIGHTS RESERVED
142
Rhode Island TRM
Residential Electric Efficiency Measures
Secondary-Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Annual Non-Resource
Description
Savings
Low Income Annual Discounted Rate Cost Reduction
262
$(R1-R2)/kWh
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Tank/Pipe Wrap (Electric Heat)
Tank/Pipe Wrap (Non-Electric Heat)
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
0.91
0.99
0.91
0.99
0.91
0.99
0.75
0.75
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from the National Grid Energy Wise 2008 Program Evaluation.263
Coincidence Factors
Summer and winter coincidence factors are estimated using demand allocation methodology described National
Grid 2000 EnergyWise impact evaluation.264
262
Oppenheim, Jerrold (2000). MEMO: Low Income DSM Program non-energy benefits. Prepared for MECo, NSTAR, and
WMECO.
263
The Cadmus Group (2010). EnergyWise 2008 Program Evaluation. Prepared for National Grid.
264
Quantec, LLC (2000). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
143
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Commercial and Industrial Electric Efficiency Measures
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
145
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Lighting – Performance Lighting
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Advanced lighting design refers to the implementation of various lighting design
principles aimed at creating a quality and appropriate lighting experience while reducing
unnecessary light usage. This is often done by a professional in a new construction situation.
Advanced lighting design uses techniques like maximizing task lighting and efficient fixtures to
create a system of optimal energy efficiency and functionality.
Primary Energy Impact: Electric
Secondary Energy Impact: Gas, Oil
Non-Energy Impact: O&M
Sector: Commercial and Industrial
Market: Lost Opportunity
End Use: Lighting
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impact
n
 LPDBASE ,i × Areai × Hoursi  m  CountEE , j × WattsEE , j × Hours j
 − ∑ 
∆kWh = ∑ 
1000
1000
i =1 
 j =1 



n
 LPDBASE,i × Areai  m  CountEE , j × WattsEE , j 

 − ∑ 
∆kW = ∑ 
1000
1000
i=1 
 j =1 

Where:
n
m
LPDBASE,i
Areai
Hoursi
CountEE,j
WattsEE,j
1000
= Total number of spaces in Space-by-Space Method or 1 for Building Area Method
Total number of efficient fixture types installed
= Baseline lighting power density for building or space type i (Watt/ft2)
= Area of building or space i (ft2)
= Annual hours of operation of the lighting equipment for building or space type i
= Quantity of efficient fixture type j
= Wattage of fixture type j (Watts)
= Conversion factor: 1000 watts per 1 kW
Note on HVAC system interaction: Additional Electric savings from cooling system interaction are
included in the calculation of adjusted gross savings for Lighting Systems projects. The HVAC
interaction adjustment factor is determined from lighting project evaluations and is included in the energy
realization rates and demand coincidence factors and realization rates.
Baseline Efficiency
The Baseline Efficiency assumes compliance with lighting power density requirements as mandated by
Rhode Island State Building Code. Energy efficiency must be met via compliance with the International
Energy Conservation Code (IECC) 2009. IECC offers one compliance path, the Building Area Method.
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
ASHRAE 90.1-2007 offers two compliance paths. For completeness, the lighting power density
requirements for both the Building Area Method and the Space-by-Space Method are presented. 265
Details of the specific power requirements by compliance path are provided in Table 44 and Table 45 in
Appendix A: Common Lookup Tables.
High Efficiency
The high efficiency scenario assumes lighting systems that achieve lighting power densities below those
required by Rhode Island State Building Code. Installed lighting wattage should be determined on a caseby-case basis using the installed fixture counts and wattages.
Hours
The annual hours of operation for lighting systems are site-specific and are determined on a case-by-case
basis. Table 43 in the Appendix provides typical lighting hours by building type and should be used as
guidance when site-specific hours are unknown.
Measure Life
The measure life for all new construction lighting installations is 15 years.266
Secondary Energy Impacts
Heating energy will be increased due to reduced lighting waste heat. This impact is estimated as an
average impact in heating fossil fuel consumption per unit of energy saved.
Energy Type Impact (MMBtu/∆kWh)267
Measure
Interior Lighting C&I Gas Heat -0.0003649
Interior Lighting Oil
-0.0007129
Non-Energy Impacts
No non-energy impacts are counted for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
All
Program
D2
ISR
1.00
SPF
1.00
RRE
1.07
RRSP
0.80
RRWP
0.73
CFSP
custom
CFWP
custom
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Energy and demand RRs derived from impact evaluation of National Grid 2008 custom lighting installations268;
final realization rates developed in 2008 custom program analysis study. 269 Both the energy and demand realization
rates include HVAC interaction factors.
265
IECC 2009 presents requirements consistent with ASHRAE 90.1-2007 for the Building Area Method but does not present
requirements for the Space-by-Space Method.
266
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
267
Optimal Energy, Inc. (2008). MEMO: Non-Electric Benefits Analysis Update. Prepared for Dave Weber, NSTAR.
268
KEMA (2009). National Grid USA 2008 Custom Lighting Impact Evaluation, Final Report. Prepared for National Grid.
November 2011
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ALL RIGHTS RESERVED
147
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Coincidence Factors
Coincidence factors for the on-peak capacity periods are calculated by project vendors based on site-specific
information.
269
KEMA (2009). Sample Design and Impact Evaluation Analysis of the 2008 Custom Program. Prepared for National Grid;
Table 19.
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ALL RIGHTS RESERVED
148
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Lighting – Lighting Systems
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure promotes the installation of efficient lighting including, but not
limited to, efficient fluorescent lamps, ballasts, and fixtures, solid state lighting, and efficient high
intensity discharge (HID) lamps, ballasts, and fixtures.
Primary Energy Impact: Electric
Secondary Energy Impact: Gas, Oil
Non-Energy Impact: O&M
Sector: Commercial & Industrial
Market: Lost Opportunity, Retrofit
End Use: Lighting
Program: Design 2000plus, Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
m
 n  Count i * Watts i 
 Count j * Watts j
∆kWh = ∑ 
− ∑ 

1000
1000
 BASE j =1 
 i =1 
n
m
 Count j * Watts j
 Count i * Wattsi 
∆kW = ∑ 
− ∑ 

1000
1000
 BASE j =1 
i =1 
Where:
n
m
Counti
Wattsi
Countj
Wattsj
1000
Hours
=
=
=
=
=
=
=
=
 
  ( Hours )
 EE 


 EE
Total number of fixture types in baseline or pre-retrofit case
Total number of installed fixture types
Quantity of existing fixtures of type i (for lost-opportunity, Counti = Countj).
Existing fixture or baseline wattage for fixture type i
Quantity of efficient fixtures of type j.
Efficient fixture wattage for fixture type j.
Conversion factor: 1000 watts per kW.
Lighting annual hours of operation.
Note on HVAC system interaction: Additional Electric savings from cooling system interaction are
included in the calculation of adjusted gross savings for Lighting Systems projects. The HVAC
interaction adjustment factor is determined from lighting project evaluations and is included in the energy
realization rates and demand coincidence factors and realization rates (See Impact Factors section).
Baseline Efficiency
For retrofit installations, the baseline efficiency case is project-specific and is determined using actual
fixture types and counts from the existing space. Existing fixture wattages are provided in the 2012 Rhode
November 2011
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Island Device Codes and Rated Lighting System Wattage Table for retrofit projects270. For lost
opportunity installations, the baseline efficiency case is determined using assumed baseline wattages for
each of the installed fixtures271.
High Efficiency
For both new construction and retrofit installations, the high efficiency case is project-specific and is
determined using actual fixture counts for the project and the 2012 Rhode Island Device Codes and Rated
Lighting System Wattage Tables for new construction and retrofit projects272.
Hours
The annual hours of operation for lighting systems are site-specific and are determined on a case-by-case
basis. Table 43 in the Appendix provides typical lighting hours by building type and should be used as
guidance when site-specific hours are unknown.
Measure Life
273
Equipment Type
Bulb – CFL screw base
Fluorescent Fixture
Hardwired CFL
LED Exit Signs
HID (interior and exterior)
LED Lighting Fixtures
LED Integral Replacement Lamps
LED Low Bay – Garage & Canopy Fixtures
Measure Life
Retrofit Lost Opportunity
5 years
N/A
13 years
15 years
13 years
15 years
13 years
15 years
13 years
15 years
13 years
15 years
13 years
15 years
13 years
15 years
Secondary Energy Impacts
Heating energy will be increased due to reduced lighting waste heat. This impact is estimated as an
average impact in heating fossil fuel consumption per unit of energy saved.
Measure
Energy Type Savings (MMBtu/∆kWh)274
Interior Lighting C&I Gas Heat -0.0003649
Interior Lighting Oil
-0.0007129
270
2012 Rhode Island Device Codes and Rated Lighting System Wattage Table – Retrofit.
2012 Rhode Island Device Codes and Rated Lighting System Wattage Table – New Construction.
272
2012 Rhode Island Device Codes and Rated Lighting System Wattage Table – New Construction. and 2012 Rhode Island
Device Codes and Rated Lighting System Wattage Table – Retrofit.
273
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1 and GDS
Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures. Prepared
for The New England State Program Working Group; Table 2
274
Optimal Energy, Inc. (2008). MEMO: Non-Electric Benefits Analysis Update. Prepared for Dave Weber, NSTAR.
271
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150
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Non-Energy Impacts
Annual non-energy benefits are claimed for reduced operation and maintenance costs due to longer
measure lives of high-efficiency lamps and ballasts. See Appendix A: Table 46.
Impact Factors for Calculating Adjusted Gross Savings
Measure
All
LED Exit Signs
All
All
CFLs, Interior
Program
D2
D2
EI
Small Retrofit
Small Retrofit
ISR
1.00
1.00
1.00
1.00
1.00
SPF
1.00
1.00
1.00
1.00
0.87
RRE
0.99
1.00
1.04
1.00
1.00
RRSP
0.97
1.00
1.03
0.98
0.98
RRWP
0.97
1.00
1.03
0.98
0.98
CFSP
0.98
1.00
0.89
0.79
0.79
CFWP
0.73
1.00
0.63
0.38
0.38
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors with one exception: National Grid uses 0.87 for screw-in CFLs
installed through the C&I Small Retrofit program based on 1996 savings persistence study275.
Realization Rates
New Construction & Major Renovation Commercial
Energy and demand RRs from impact evaluation of National Grid’s 2007 Design 2000plus (New Construction)
Lighting installations276. Demand RR is the connected demand RR; energy RR includes connected demand RR,
hours of use RR and HVAC Interactive adjustment.
C&I Large Retrofit
Energy RR is from impact evaluation of National Grid’s 2007 Energy Initiative (Large Retrofit) Lighting
program277. Energy RR is the ratio measured electric energy savings to gross estimates of electric energy savings,
and includes electric HVAC interaction adjustment by default. National Grid demand RRs are from impact
evaluation of National Grid’s 2003 Energy Initiative Lighting program278. Demand RR is the connected demand RR.
C&I Small Retrofit
Energy realization rates from statewide impact evaluation of 2007 small retrofit programs279; Demand RRs are
connected demand RRs, from statewide impact evaluation of 2003 Small Business Lighting Retrofit programs280.
Coincidence Factors
D2: Coincidence factors from study of National Grid’s 2007 Design 2000plus Lighting subprogram281; Coincidence
factors for Exit signs are assumed to be 1.0 since units operate 8,760 hours per year.
EI, SBS: Coincidence factors from 2011 NEEP Lighting Loadshape project282.
275
HEC, Inc. (1996). Final Report for New England Power Service Company Persistence of Savings Study. Prepared for
NEPSCo.
276
KEMA (2009). Design 2000plus Lighting Hours of Use and Load Shape Measurement Study. Prepared for National Grid.
277
Summit Blue Consulting (2008). Large Commercial and Industrial Retrofit Program Impact Evaluation 2007. Prepared for
National Grid.
278
RLW Analytics (2004). 2003 Energy Initiative "EI" Lighting Impact Evaluation Final Report. Prepared for National Grid.
279
Summit Blue Consulting (2008). Multiple Small Business Services Programs Impact Evaluation 2007. Prepared for
Massachusetts Joint Utilities.
280
RLW Analytics (2004). Massachusetts Utilities 2003 Multiple Small Business Lighting Retrofit Programs Impact Evaluation.
Prepared for Massachusetts Utilities.
281
KEMA (2009). Design 2000plus Lighting Hours of Use and Load Shapes Measurement Study. Prepared for National Grid.
282
KEMA (2011). C&I Lighting Load Shape Project FINAL Report. Prepared for the Regional Evaluation, Measurement and
Verification Forum.
November 2011
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ALL RIGHTS RESERVED
151
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Coincidence factors include both Lighting and HVAC interactive effects.
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ALL RIGHTS RESERVED
152
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Lighting – Lighting Controls
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure promotes the installation of lighting controls in both lost-opportunity
and retrofit applications. Promoted technologies include occupancy sensors and daylight dimming
controls.
Primary Energy Impact: Electric
Secondary Energy Impact: Gas, Oil
Non-Energy Impacts: O&M
Sector: Commercial & Industrial
Market: Lost Opportunity, Retrofit
End Use: Lighting
Program: Design 2000plus, Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
∆kW = (Controlled kW )(HoursBASE − HoursEE )
∆kW = (Controlled kW )
Where:
Controlled kW
HoursBASE
=
=
HoursEE
=
Controlled fixture wattage
Total annual hours that the connected kW operated in the pre-retrofit
case (retrofit installations) or would have operated with code-compliance
controls (new construction installations).
Total annual hours that the connect Watts operate with the lighting
controls implemented.
Note on HVAC system interaction: Additional Electric savings from cooling system interaction are
included in the calculation of adjusted gross savings for Lighting Systems projects. The HVAC
interaction adjustment factor is determined from lighting project evaluations and is included in the energy
realization rates and demand coincidence factors and realization rates (See Impact Factors section).
Baseline Efficiency
The baseline efficiency case assumes no controls (retrofit) or code-compliant controls (new construction).
High Efficiency
The high efficiency case involves lighting fixtures connected to controls that reduce the pre-retrofit or
baseline hours of operation.
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Commercial and Industrial Electric Efficiency Measures
Hours
The annual hours of reduction are site-specific and are determined on a case-by-case basis. Table 43 in
the Appendix provides typical lighting hours by building type and should be used as guidance when sitespecific hours are unknown.
Measure Life
283
Measure
Occupancy Sensors
Daylight Dimming
Measure Life
Retrofit Lost Opportunity
9 years
10 years
9 years
10 years
Secondary Energy Impacts
Heating energy is increased due to reduced lighting waste heat. This impact is estimated as an average
impact in heating fossil fuel consumption per unit of electric energy saved.
Measure
Energy Type Savings (MMBtu/∆kWh)284
Interior Lighting C&I Gas Heat -0.0003649
Interior Lighting Oil
-0.0007129
Non-Energy Impacts
Annual non-energy benefits are claimed for reduced operation and maintenance costs due to longer
measure lives of high-efficiency lamps and ballasts. See Appendix A: Table 46.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Occupancy Sensors
Daylight Dimming
Occupancy Sensors
Program
D2, EI
D2, EI
Small Retrofit
ISR
1.00
1.00
1.00
SPF
1.00
1.00
1.00
RRE
0.76
0.38
0.87
RRSP
0.96
0.96
0.94
RRWP
0.96
0.96
0.94
CFSP
0.30
0.15
0.35
CFWP
0.19
0.00
0.28
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
RRs from National Grid impact evaluation of C&I lighting controls installations.285
Coincidence Factors
CFs from National Grid impact evaluation C&I lighting controls installations.286
283
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
Optimal Energy, Inc. (2008). MEMO: Non-Electric Benefits Analysis Update. Prepared for Dave Weber, NSTAR.
285
RLW Analytics (2007). Lighting Controls Impact Evaluation Final Report, 2005 Energy Initiative, Design 2000plus and
Small Business Services Program. Prepared for National Grid.
286
RLW Analytics (2007). Lighting Controls Impact Evaluation Final Report, 2005 Energy Initiative, Design 2000plus and
Small Business Services Program. Prepared for National Grid.
284
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
154
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Lighting – Freezer/Cooler LEDs
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of LED lighting in freezer and/or cooler cases. The LED lighting
consumes less energy, and results in less waste heat which reduces the cooling/freezing load.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Lighting
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
∆kWh = ∆kWhLED + ∆kWhHeat
n
m
∆kWhLED = ∑ (Count i * kWi * Hoursi )
i =1
− ∑ (Count j * kW j * Hours j )
BASE
i =1
LED
∆kWhHeat = ∆kWhLED * 0.28 * Eff RS
∆kW = ∆kWh / Hours j
Where:
∆kWhLED
∆kWhHeat
=
=
N
M
Counti
kWi
Hoursi
Countj
kWj
Hoursj
0.28
=
=
=
=
=
=
=
=
=
EffRS
=
Reduction in lighting energy
Reduction in refrigeration energy due to reduced heat loss from the lighting
fixtures
Total number of lighting fixture types in the pre-retrofit case
Total number of lighting fixture types in the post-retrofit case
Quantity of type i fixtures in the pre-retrofit case
Power demand of pre-retrofit lighting fixture type i (kW/fixture)
Pre-retrofit annual operating hours of fixture type i
Quantity of type j fixtures in the pre-retrofit case
Power demand of lighting fixture type j (kW/fixture)
Post-retrofit annual operating hours of fixture type j
Unit conversion between kW and tons calculated as 3,413 Btuh/kW divided
by 12,000 Btuh/ton
Efficiency of typical refrigeration system: 1.6 kW/ton287
Baseline Efficiency
The baseline efficiency case is the existing lighting fixtures in the cooler or freezer cases.
287
Select Energy (2004). Cooler Control Measure Impact Spreadsheet Users’ Manual. Prepared for NSTAR
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Commercial and Industrial Electric Efficiency Measures
High Efficiency
The high efficiency case is the installation of LED lighting fixtures on the cooler or freezer cases,
replacing the existing lighting fixtures.
Hours
Annual hours of operation are determined on a case-by-case basis and are typically 8,760 hours/year288.
Post-retrofit operating hours are assumed to be the same as pre-retrofit hours unless lighting occupancy
sensors were also implemented.
Measure Life
The measure life is 13 years.289
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Freezer/Cooler LEDs
Freezer/Cooler LEDs
EI
Small Retrofit
1.00
1.00
1.00
1.00
1.00
1.04
1.00
1.07
1.00
1.12
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
RRs for small retrofit installations based on impact evaluation of 2005 small retrofit custom measures290; RRs for
large retrofit installations are 100% based on no evaluations
Coincidence Factors
CFs set to 100% because units typically operate throughout the peak periods.
288
Based on experience of National Grid program staff and implementation vendors.
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
290
RLW Analytics (2007). Small Business Services Custom Measure Impact Evaluation. Prepared for National Grid.
289
November 2011
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ALL RIGHTS RESERVED
156
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – Single Package and Split System Unitary Air Conditioners
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure promotes the installation of high efficiency unitary air conditioning
equipment in lost opportunity applications. Air conditioning (AC) systems are a major consumer
of electricity and systems that exceed baseline efficiencies can save considerable amounts of
energy. This measure applies to air, water, and evaporatively-cooled unitary AC systems, both
single-package and split systems.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impact
 12
12 
∆kWh = (TonsC )
−
(HoursC )
 SEERBASE SEEREE 
 12
12 

∆kW = (TonsC )
−
 EERBASE EEREE 
Where:
∆kWh
∆kW
TonsC
SEERBASE
SEEREE
HoursC
EERBASE
EEREE
Gross annual kWh savings from the measure.
Gross connected kW savings from the measure.
Rated cooling capacity of the equipment in tons
Seasonal Energy Efficiency Ratio of the baseline equipment. See Table 15 for values.
Seasonal Energy Efficiency Ratio of the energy efficient equipment.
Cooling equivalent full load hours.
Energy Efficiency Ratio of the baseline equipment. See Table 15 for values. Since IECC
2009 does not provide EER requirements for equipment < 5.4 tons, assume the following
conversion: EER≈SEER/1.1.
= Energy Efficiency Ratio of the energy efficient equipment. For equipment < 5.4 tons,
assume the following conversion: EER≈SEER/1.1.
=
=
=
=
=
=
=
Baseline Efficiency
The baseline efficiency case for new installations assumes compliance with the International Energy
Conservation Code (IECC) 2009 as mandated by Rhode Island State Building Code. Replacement
installations, which are not required to meet the IECC 2009 code, use the ASHREA 2004 baseline
efficiencies. Table 15 details the specific efficiency requirements by equipment type and capacity.
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Commercial and Industrial Electric Efficiency Measures
Table 15: Baseline Efficiency Requirements for C&I Unitary Air Conditioners291
Baseline Efficiency
Subcategory or Rating
New
Replacement
Size Category
Condition
Installations
Installations
Split
system
13.0
SEER
12.0
SEER
<65,000 Btu/hb
Single package
13.0 SEER
12.0 SEER
≥65,000 Btu/h and
Split system and single
<135,000 Btu/h
package
11.2 EER
10.1 EERa
Air
Split system and single
conditioners, ≥135,000 Btu/h and
<240,000 Btu/h
package
11.0 EER
9.5 EERa
air-cooled
≥240,000 Btu/h and
Split system and single
<760,000 Btu/h
package
10.0 EER
9.3 EERa
Split system and single
≥760,000 Btu/h
package
9.7 EER
9.0 EERa
Split system and single
<65,000 Btu/h
package
12.1 EER
12.1 EER
Air
≥65,000 Btu/h and
Split system and single
conditioners,
<135,000 Btu/h
package
11.5 EER
11.3 EERa
water and
≥135,000 Btu/h and
Split system and single
evaporatively
<240,000 Btu/h
package
11.0 EER
10.8 EERa
cooled
Split system and single
≥240,000 Btu/h
package
11.5 EER
10.8 EERa
292
a. Deduct 0.2 from the required EERs for units with a heating section other than electric heat .
b. Single-phase air-cooled air conditioners <65,000 Btu/h are regulated by the National Appliance Energy
Conservation Act of 1987 (NAECA); SEER values are those set by NAECA.
Equipment
Type
High Efficiency
The high efficiency case assumes the HVAC equipments meets or exceeds the Consortium for Energy
Efficiency’s (CEE) specification. This specification results in cost-effective energy savings by specifying
higher efficiency HVAC equipment while ensuring that several manufacturers produce compliant
equipment. The CEE specification is reviewed and updated annually to reflect changes to the ASHRAE
and IECC energy code baseline as well as improvements in the HVAC equipment technology. The
minimum efficiency requirements for program participation are outlined on the Cool Choice rebate forms.
Equipment efficiency is the rated efficiency of the installed equipment for each project.
Hours
The average equivalent full load cooling hours for C&I Unitary AC equipment is 855 hours.293
Measure Life
The measure life is 15 years.294
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
291
International Code Council (2009). 2009 International Energy Conservation Code; Page43, Table 503.2.3(1).
The PAs do not differentiate between units by heating section types. To be conservative, the highest Baseline Efficiency is
assumed for all heating section types in each equipment category.
293
KEMA (2011). C&I Unitary HVAC Load Shape Project Final Report. Prepared for the Regional Evaluation, Measurement
and Verification Forum.
294
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
292
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158
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Unitary AC
Program
NC
ISR
1.00
SPF
1.00
RRE
1.00
RRSP
1.00
RRWP
1.00
CFSP
0.34
CFWP
0.00
In-Service Rates
All installations have 100% in service rate since all programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are set to zero because hours are coincidence factors are based on impact evaluations.
Coincidence Factors
CFs from 2011 NEEP Unitary HVAC Loadshape study.295
295
KEMA (2011). C&I Unitary HVAC Load Shape Project Final Report. Prepared for the Regional Evaluation, Measurement
and Verification Forum.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
159
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – Single Package and Split System Heat Pump Systems
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure applies to the installation of high-efficiency single package or split
system air source, water source, ground source (closed loop) and groundwater source (open loop)
heat pump systems for space conditioning applications.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impact
∆kWh = ∆kWhC + ∆kWhH

12
12
∆kWhC = (TonsC )
−
 SEERBASE SEEREE
 12
12 

∆kW = (TonsC )
−
EER
EER
BASE
EE 


(HoursC )

For air-source units with cooling capacity < 5.4 tons:

12
12
∆kWhH = (TonsC × CR )
−
 HSPFBASE HSPFEE

(HoursH )

For water, ground and ground water source units and air-source units with cooling capacity ≥ 5.4 tons:
 12
12 
(HoursH )
∆kWhH = (TonsC × CR )
−
COP
COP

BASE
EE 
Where:
∆kWh
∆kW
TonsC
CR
=
=
=
=
Gross annual kWh savings from the measure.
Peak kW reduction from the measure.
Rated cooling capacity of the equipment in tons.
Capacity Ratio used to convert rated cooling capacity to heating capacity. For equipment
with cooling capacity ≤ 5.4 tons, it is assumed that the heating capacity and cooling
capacity are equal (CR=1). For equipment > 5.4 tons, it is assumed that CR = 1.15296.
296
UI and CL&P Program Savings Documentation for 2011 Program Year, Section 2.2.2 C&I LO Cooling – Unitary AC & Heat
Pumps.
November 2011
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160
Rhode Island TRM
SEERBASE
SEEREE
EERBASE
Commercial and Industrial Electric Efficiency Measures
HSPFBASE
= Seasonal Energy Efficiency Ratio of the baseline equipment. See Table 16 for values.
= Seasonal Energy Efficiency Ratio of the energy efficient equipment.
= Energy Efficiency Ratio of the baseline equipment. See Table 16 for values. Since IECC
2009 does not provide EER requirements for equipment < 5.4 tons, assume the following
conversion: EER≈SEER/1.1.
= Energy Efficiency Ratio of the energy efficient equipment. For equipment < 5.4 tons,
assume the following conversion: EER≈SEER/1.1.
= Heating Seasonal Performance Factor of the baseline equipment. See Table 16 for values.
HSPFEE
COPBASE
COPEE
HoursC
HoursH
=
=
=
=
=
EEREE
Heating Seasonal Performance Factor of the energy efficient equipment.
Coefficient of performance of the baseline equipment. See Table 16 for values.
Coefficient of performance of the energy efficient equipment.
Cooling mode equivalent full load hours.
Heating mode equivalent full load hours.
Baseline Efficiency
The baseline efficiency case for new installations assumes compliance with the efficiency requirements as
mandated by Rhode Island State Building Code. As described in Chapter 13 of the aforementioned
document, energy efficiency must be met via compliance with the International Energy Conservation
Code (IECC) 2009 with Rhode Island amendments. Table 1 details the specific efficiency requirements
by equipment type and capacity. The baseline efficiency case for replacement units are not required to
meet the IECC 2009. Instead, replacement installations use the ASHRAE 2004 standards as baseline.
The rating conditions for the baseline and efficient equipment efficiencies must be equivalent.
November 2011
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Table 16: Baseline Efficiency Requirements for C&I Heat Pumps297
Equipment
Type
Size Category
(Tons)
Subcategory or Rating Condition
Split system
< 5.4 b
Single package
Cooling Mode
13.0 SEER /
12.0 SEER
13.0 SEER /
12.0 SEER
11.0 EERa /
9.9 EER
10.6 EERa /
9.1 EER
9.5 EERa /
8.8 EER
Heating Mode
7.7 HSPF /
6.6 HSPF
7.7 HSPF /
6.6 HSPF
3.3 COP /
3.2 COP
3.2 COP /
3.1 COP
3.2 COP /
3.1 COP
Split system and single package /
47°F db/43°F wb outdoor air
Split system and single package /
47°F db/43°F wb outdoor air
Split system and single package /
≥ 20
47°F db/43°F wb outdoor air
86°F entering water (Cooling Mode)
< 1.4
/ 68°F entering water (Heating
11.2 EER /
4.2 COP /
Mode)
11.2
EER
4.2 COP
Water source
≥ 1.4 and <
86°F entering water / 68°F entering
12.0 EER /
4.2 COP /
11.25
water (Heating Mode)
12.0 EER
4.2 COP
Groundwater
59°F entering water (Cooling Mode)
source (open
/ 50°F entering water (Heating
< 11.25
16.2 EER /
3.6 COP /
loop)
Mode)
16.2 EER
3.6 COP
Ground source
77°F entering water / 32°F entering
13.4
EER
/
3.1
COP /
< 11.25
(closed loop)
water (Heating Mode)
13.4 EER
3.1 COP
db = dry-bulb temperature, °F; wb = wet-bulb temperature, °F.
a. Deduct 0.2 from the required EERs for units with a heating section other than electric heat298.
b. Single-phase air-cooled air conditioners <65,000 Btu/h are regulated by the National Appliance Energy
Conservation Act of 1987 (NAECA); SEER values are those set by NAECA.
Air cooled
≥ 5.4 and <
11.25
≥ 11.25 and <
20
Baseline Efficiency
(New / Replacement)
High Efficiency
The high efficiency case assumes the HVAC equipments meets or exceeds the Consortium for Energy
Efficiency’s (CEE) specification. This specification results in cost-effective energy savings by specifying
higher efficiency HVAC equipment while ensuring that several manufacturers produce compliant
equipment. The CEE specification is reviewed and updated annually to reflect changes to the ASHRAE
and IECC energy code baseline as well as improvements in the HVAC equipment technology.
The minimum efficiency requirements for program participation are outlined on the Cool Choice rebate
forms. Equipment efficiency is the rated efficiency of the installed equipment for each project.
Hours
The average cooling EFLHs are taken as 855 hours299, while the average heating EFLHs are taken as
1137 hours300.
297
International Code Council (2009). 2009 International Energy Conservation Code; Page 44, Table 503.2.3(2).
The PAs do not differentiate between units by heating section types. To be conservative, the highest baseline efficiency is
assumed for all heating section types in each equipment category.
299
KEMA (2011). C&I Unitary HVAC Load Shape Project Final Report. Prepared for the Regional Evaluation, Measurement
and Verification Forum.
300
Heating EFLHs calculated using cooling EFLHs and facility type heating and cooling EFLHs given in CT PSD.
298
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162
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Life
The measure life is 15 years.301
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Air-Source HP
Water Source HP
Ground Source (Closed loop) HP
Groundwater Source (Open loop) HP
Program
NC
NC
NC
NC
ISR
1.00
1.00
1.00
1.00
SPF
1.00
1.00
1.00
1.00
RRE
1.05
1.05
1.05
1.05
RRSP
1.00
1.00
1.00
1.00
RRWP
1.00
1.00
1.00
1.00
CFSP
0.44
0.44
0.44
0.44
CFWP
0.00
0.00
0.00
0.00
In-Service Rates
All installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid and energy and demand RRs based on a 1994 study of HVAC and process cooling equipment.302
Coincidence Factors
National Grid: on-peak and seasonal peak CFs from 2005 coincidence factor study303
301
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
The Fleming Group (1994). Persistence of Commercial/Industrial Non-Lighting Measures, Volume 2, Energy Efficient HVAC
and Process Cooling Equipment. Prepared for New England Power Service Company.
303
RLW Analytics (2007). Final Report, 2005 Coincidence Factor Study. Prepared for United Illuminating Company and
Connecticut Lighting & Power.
302
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
163
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – Dual Enthalpy Economizer Controls
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The measure is to upgrade the outside-air dry-bulb economizer to a dual enthalpy
economizer. The system will continuously monitor the enthalpy of both the outside air and return
air. The system will control the system dampers adjust the outside quantity based on the two
readings.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impacts
∆kWh = (TonsC )(SAVEkWh )
∆kW = (TonsC )(SAVEkW )
Where:
TonsC
SAVEkWh
SAVEkW
= Rated capacity of the cooling equipment in tons
= Average annual kWh reduction per ton of cooling capacity: 289 kWh/ton304
= Average kW reduction per ton of cooling capacity: 0.289 kW/ton305
Baseline Efficiency
The baseline efficiency case for this measure assumes the relevant HVAC equipment is operating with a
fixed dry-bulb economizer.
High Efficiency
The high efficiency case is the installation of an outside air economizer utilizing two enthalpy sensors,
one for outdoor air and one for return air.
Hours
Not applicable.
Measure Life
The measure life is 10 years for lost-opportunity applications.306
304
Patel, Dinesh (2001). Energy Analysis: Dual Enthalpy Control. Prepared for NSTAR.
Ibid.
306
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
305
November 2011
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ALL RIGHTS RESERVED
164
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
DEEC
D2
1.00
1.00
1.00
1.00
1.00
0.34
0.00
In-Service Rates
All installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
RRs are 1.0 since there have been no impact evaluations of the prescriptive savings calculations.
Coincidence Factors
CFs from 2011 NEEP Unitary HVAC Loadshape study.307
307
KEMA (2011). C&I Unitary HVAC Load Shape Project Final Report. Prepared for the Regional Evaluation, Measurement
and Verification Forum.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
165
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – Demand Control Ventilation
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The measure is to control quantity of outside air to an air handling system based on
detected space CO2 levels. The installed systems monitor the CO2 in the spaces or return air and
reduce the outside air use when possible to save energy while meeting indoor air quality
standards.
Primary Energy Impact: Electric
Secondary Energy Impact: Gas, Oil
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impacts
Gross energy and demand savings coincident with the summer and winter on-peak periods are custom
calculated using the National Grid’s DCV savings calculation tool. The tool is used to calculate energy
and demand savings based on site-specific project details including hours of operation, HVAC system
efficiency and total air flow, and enthalpy and temperature set points.308
Baseline Efficiency
The baseline efficiency case for this measure assumes the relevant HVAC equipment has no ventilation
control.
High Efficiency
The high efficiency case is the installation of an outside air intake control based on CO2 sensors.
Hours
The operating hours are site-specific for custom savings calculations.
Measure Life
The measure life is 10 years.309
Secondary Energy Impacts
Gas and oil heat impacts are counted for DCV measures for reduction in space heating. If these impacts
are not custom calculated, they can be approximated using the interaction factors described below:
308
Detailed descriptions of the DCV Savings Calculation Tools are included in the TRM Library under the “C&I Spreadsheet
Tools” folder.
309
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
Measure life is assumed to be the same as Enthalpy Economizer.
November 2011
© 2011 National Grid
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166
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Energy Type Savings (MMBtu/∆kWh)310
DCV
DCV
C&I Gas Heat 0.001277
Oil
0.002496
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
DCV
D2
1.00
1.00
1.00
1.00
1.00
1.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
RRs are set to 1.00 because energy savings are custom calculated.
Coincidence Factors
CFs are set to 1.00 because coincidence is built into the estimates of Gross kW.
310
Optimal Energy, Inc. (2008). MEMO: Non-Electric Benefits Analysis Update. Prepared for Dave Weber, NSTAR.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
167
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – ECM Fan Motors
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure is offered through the Cool Choice program and promotes the
installation of electronically commutated motors (ECMs) on fan powered terminal boxes, fan
coils, and HVAC supply fans on small unitary equipment.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Design 2000plus
Algorithms for Calculating Electric Energy Impact
∆kWh = (Design CFM )(Box Size Factor )(% Flow ANNUAL )(Hours)
∆kWSP = (Design CFM )(Box Size Factor )(% FlowSP )
∆kWWP = (Design CFM )(Box Size Factor )(% FlowWP )
Where:
Design CFM
Box Size Factor
%FlowANNUAL
%Flow SP
%Flow WP
Hours
=
=
=
=
=
=
Capacity of the VAV box in cubic feet per minute
Savings factor in Watts/CFM. See Table 17 for values.
Average % of design flow over all operating hours. See Table 17 for values.
Average % of design flow during summer peak period. See Table 17 for values.
Average % of design flow during summer peak period. See Table 17 for values.
Annual operating hours for VAV box fans
Table 17: ECM Fan Motor Savings Factors 311
Factor
Box Size Factor
Box Size Factor
%FlowANNUAL
%Flow SP
%Flow WP
Box Size
< 1000 CFM
≥ 1000 CFM
All
All
All
Value
0.32
0.21
0.52
0.63
0.33
Units
Watts/CFM
Watts/CFM
-
Baseline Efficiency
The baseline efficiency case for this measure assumes the VAV box fans are powered by a single speed
fractional horsepower permanent split capacitor (PSC) induction motor.
311
Factors based on engineering analysis developed at National Grid.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
High Efficiency
The high efficiency case must have a motor installed on new, qualifying HVAC equipment.
Hours
The annual operating hours for ECMs on VAV box fans are determined by project vendors based on sitespecific data.
Measure Life
The measure life is 20 years for lost-opportunity applications.312
Algorithms for Calculating Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
ECM Fan Motors
Program
D2
ISR
1.00
SPF
1.00
RRE
1.00
RRSP
1.00
RRWP
1.00
CFSP
1.00
CFWP
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
National Grid: RRs based on engineering estimates
Coincidence Factors
National Grid: CFs based on engineering estimates.
312
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
169
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – Energy Management System
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The measure is the installation of a new building energy management system
(EMS) or the expansion of an existing energy management system for control of non-lighting
electric and gas end-uses in an existing building on existing equipment.
Primary Energy Impact: Electric
Secondary Energy Impact: Gas, Oil
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: HVAC
Program: Energy Initiative
Algorithms for Calculating Primary Energy Impacts
Gross energy and demand savings for energy management systems (EMS) are custom calculated using
the National Grid’s EMS savings calculation tool. The tool is used to calculate energy and demand
savings based on project-specific details including hours of operation, HVAC system equipment and
efficiency and points controlled. 313
Baseline Efficiency
The baseline case is the existing equipment and systems without the implemented controls.
High Efficiency
The high efficiency case is the installation of a new EMS or the expansion of an existing EMS to control
additional non-lighting electric and/or gas equipment. The EMS must be installed in an existing building
on existing equipment.
Hours
Not applicable.
Measure Life
For retrofit applications, the measure life is 10 years314.
Secondary Energy Impacts
Heating Impacts: Gas and oil heat impacts are counted for EMS measures for reduction in space heating.
If the heating system impacts are not calculated in the EMS savings calculation tool, they can be
approximated using the interaction factors described below:
313
Detailed descriptions of the EMS Savings Calculation Tools are included in the TRM Library under the “C&I Spreadsheet
Tools” folder.
314
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
170
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Energy Type Savings (MMBtu/∆kWh)315
EMS
EMS
C&I Gas Heat 0.001277
Oil
0.002496
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
EMS
EI
1.00
1.00
1.04
1.03
1.03
custom
custom
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Realization rates are derived from a 1994 impact evaluation of HVAC and process cooling equipment.316
Coincidence Factors
Coincidence factors are custom calculated for each site.
315
Optimal Energy, Inc. (2008). MEMO: Non-Electric Benefits Analysis Update. Prepared for Dave Weber, NSTAR.
The Fleming Group (1994). Persistence of Commercial/Industrial Non-Lighting Measures, Volume 3, Energy Management
Control Systems. Prepared for New England Power Service Company.
316
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
171
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – High Efficiency Chiller
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure promotes the installation of efficient water-cooled and air-cooled
water chilling packages for comfort cooling applications. Eligible chillers include air-cooled,
water cooled rotary screw and scroll, and water cooled centrifugal chillers for single chiller
systems or for the lead chiller only in multi-chiller systems.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impacts
Air-Cooled Chillers:
 12
12 
(HoursC )
∆kWh = (TonsC )
−
 EERBASE EEREE 
 12
12 
(LF )
∆kW = (TonsC )
−
 EERBASE EEREE 
Water-Cooled Chillers:
∆kWh = (TonsC )(kW / tonBASE − kW / tonEE )(HoursC )
∆kW = (TonsC )(kW / tonBASE − kW / tonEE )(LF )
Where:
TonsC
EERBASE
EEREE
kW/tonBASE
kW/tonEE
HoursC
12
LF
=
=
=
=
=
=
=
=
Rated cooling capacity of the installed equipment
Energy Efficiency Ratio of the baseline equipment. See Table 18 for values.
Energy Efficiency Ratio of the efficient equipment. Site-specific.
Energy efficiency rating of the baseline equipment. See Table 18 for values.
Energy efficiency rating of the efficient equipment. Site-specific.
Equivalent full load hours for chiller cooling operation
Conversion: 12 kBtu/h per ton
Load Factor
Baseline Efficiency
The baseline efficiency case assumes compliance with the efficiency requirements as mandated by Rhode
Island State Building Code. As described in Chapter 13 of the aforementioned document, energy
efficiency must be met via compliance with the International Energy Conservation Code (IECC) 2009.
Table 18 details the specific efficiency requirements by equipment type and capacity.
November 2011
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Table 18: Baseline Efficiency Requirements for C&I Chillers317
Path A
Path B
Size Category
Full
Full
Equipment Type
(Tons)
Units
Load
IPLV
Load
IPLV
< 150
EER
9.562
12.5
N/A
N/A
Air-Cooled
≥ 150
EER
9.562
12.75
N/A
N/A
< 75
kW/ton
0.780
0.63
0.800
0.600
Water Cooled, electrically operated, positive
≥ 75 and < 150
kW/ton
0.775
0.615
0.790
0.586
displacement (rotary screw and scroll)
≥ 150 and < 300
kW/ton
0.680
0.580
0.718
0.540
≥ 300
kW/ton
0.620
0.540
0.639
0.490
< 150
kW/ton
0.634
0.596
0.639
0.450
Water Cooled, electrically operated,
≥ 150 and < 300
kW/ton
0.634
0.596
0.639
0.450
centrifugal
≥ 300 and < 600
kW/ton
0.576
0.549
0.600
0.400
≥ 600
kW/ton
0.570
0.539
0.590
0.400
Compliance with this standard can be obtained by meeting the minimum requirements of Path A or B. However,
both the full load and IPLV must be met to fulfill the requirements of Path A or B.
High Efficiency
The high efficiency scenario assumes water chilling packages that exceed the efficiency levels required
by Rhode Island State Building Code and meet the minimum efficiency requirements as stated in the New
Construction HVAC energy efficiency rebate forms. Energy and demand savings calculations are based
on actual equipment efficiencies should be determined on a case-by-case basis.
Hours
Table 19: Cooling Hours for C&I Chillers318
Equipment Type
Size Range
Cooling EFLH
Full Load IPLV
Air-Cooled
All
698
698
Water Cooled, electrically
operated, positive
displacement (rotary
screw and scroll)
≥ 75 and < 150
1086
1038
≥ 150 and < 300
1086
1038
≥ 300
1620
2066
≥ 150 and < 300
1086
1038
≥ 300 and < 600
1620
2066
Water Cooled, electrically
operated, centrifugal
Measure Life
The measure life is 23 years.319
Secondary Energy Impacts
There are no secondary energy impacts counted for this measure.
317
DOE (2009). 2009 IECC Based Building Codes; Table 503.2.3(7): Water Chilling Packages, Efficiency Requirements - as of
1/1/2020 minimum efficiency values. Compliance with this standard can be obtained by meeting the minimum requirements of
Path A or B. However, both the full load and IPLV must be met to fulfill the requirements of Path A or B.
318
National Grid staff estimates from 1994.
319
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
173
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Chillers
Program
D2
ISR
1.00
SPF
1.00
RRE
1.04
RRSP
1.00
RRWP
1.00
CFSP
1.00
CFWP
0.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
Energy RRs based on a 1994 impact evaluation of HVAC and process cooling equipment.320
Coincidence Factors
CFs estimated based on 1993-1994 evaluation research and engineering estimates.
320
The Fleming Group (1994). Persistence of Commercial/Industrial Non-Lighting Measures, Volume 2, Energy Efficient HVAC
and Process Cooling Equipment. Prepared for New England Power Service Company.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
174
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
HVAC – Hotel Occupancy Sensors
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The measure is to the installation of hotel occupancy sensors (HOS) to control
packaged terminal AC units (PTACs) with electric heat, heat pump units and/or fan coil units in
hotels that operate all 12 months of the year.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: HVAC
Program: Energy Initiative
Algorithms for Calculating Primary Energy Impacts
Unit savings are deemed based on evaluation results:
∆kWh = SAVEkWh
∆kW = SAVEkW
Where:
Unit
SAVEkWh
SAVEkW
=
=
=
Installed hotel room occupancy sensor
Average annual kWh reduction per unit: 438 kWh321
Average annual kWh reduction per unit: 0.09 kW322
Baseline Efficiency
The baseline efficiency case assumes the equipment has no occupancy based controls.
High Efficiency
The high efficiency case is the installation of controls that include (a) occupancy sensors, (b)
window/door switches for rooms that have operable window or patio doors, and (c) set back to 65 F in the
heating mode and set forward to 78 F in the cooling mode when occupancy detector is in the unoccupied
mode. Sensors controlled by a front desk system are not eligible.
Hours
Not applicable.
Measure Life
For retrofit applications, the measure life is 10 years.323
321
322
National Grid and NSTAR (2010). Energy Analysis: Hotel Guest Occupancy Sensors.
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
175
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Hotel Occupancy Sensors
EI
1.00
1.00
1.00
1.00
1.00
0.30
0.70
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
RRs based on engineering estimates.
Coincidence Factors
CFs based on engineering estimates.
323
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1. Measure
life is assumed to be the same as for EMS retrofit measure.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
176
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – Door Heater Controls
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of controls to reduce the run time of door and frame heaters for freezers
and walk-in or reach-in coolers. The reduced heating results in a reduced cooling load.324
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
∆kWh = kWDH × %OFF × 8760
∆kW = kWDH × %OFF
Where:
kWDH
8760
%OFF
=
=
Total demand of the door heater, calculated as Volts * Amps / 1000
Door heater annual run hours before controls
Door heater Off time325: 46% for freezer door heaters or 74% for cooler door
heaters)
Baseline Efficiency
The baseline efficiency case is a cooler or freezer door heater that operates 8,760 hours per year without
any controls.
High Efficiency
The high efficiency case is a cooler or freezer door heater connected to a heater control system, which
controls the door heaters by measuring the ambient humidity and temperature of the store, calculating the
dewpoint, and using pulse width modulation (PWM) to control the anti-sweat heater based on specific
algorithms for freezer and cooler doors. Door temperature is typically maintained about 5oF above the
store air dewpoint temperature with the heaters operating at 80% (adjustable)326.
324
The savings assumptions are based on experience with and evaluation of National Resource Management (NRM) products.
The value is an estimate by NRM based on hundreds of downloads of hours of use data from Door Heater controllers. These
values are also supported by Select Energy (2004). Cooler Control Measure Impact Spreadsheet User’s Manual. Prepared for
NSTAR.
326
Select Energy (2004). Analysis of Cooler Control Energy Conservation Measures. Prepared for NSTAR.
325
November 2011
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ALL RIGHTS RESERVED
177
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Hours
Pre-retrofit hours are 8,760 hours per year. After controls are installed, the door heaters in freezers are on
for an average 4,730.4 hours/year (46% off time) and the door heaters for coolers are on for an average
2,277.6 hours/year (74% off time).
Measure Life
The measure life for cooler and freezer door heater controls is 10 years.327
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Door Heater Control
Small Retrofit
1.00
1.00
1.00
1.00
1.00
0.50
1.00
In-Service Rates
All installations have 100% in service rate since all PAs’ programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Energy RR based on staff estimates.
Coincidence Factors
CFs from the 1995 HEC study of walk-in cooler anti-sweat door heater controls.328
327
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
HEC, Inc. (1995). Analysis of Door Master Walk-In Cooler Anti-Sweat Door Heater Controls Installed at Ten Sites in
Massachusetts. Prepared for NEPSCo; Table 9.
328
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
178
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – Novelty Cooler Shutoff
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of controls to shut off a facility’s novelty coolers for non-perishable
goods based on pre-programmed store hours. Energy savings occur as coolers cycle off during
facility unoccupied hours.329
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
∆kWh = (kWNC )(DC AVG )( HoursOFF)
∆kW = 0
Where:
∆kW
= 0 since savings are assumed to occur during evening hours and are therefore not
coincident with either summer or winter peak periods.
kWNC
= Power demand of novelty cooler calculated from equipment nameplate data and
estimated 0.85 power factor330
HoursOFF = Potential hours off every night per year, estimated as one less than the number of hours
the store is closed per day
DCAVG
= Weighted average annual duty cycle: 48.75%331
Baseline Efficiency
The baseline efficiency case is the novelty coolers operating 8,760 hours per year.
High Efficiency
The high efficiency case is the novelty coolers operating fewer than 8,760 hours per year since they are
controlled to cycle each night based on pre-programmed facility unoccupied hours.
Hours
Energy and demand savings are based on the reduced operation hours of the cooler equipment. Hours
reduced per day are estimated on a case-by-case basis, and are typically calculated as one less than the
number of hours per day that the facility is closed each day.
329
The savings assumptions are based on experience with and evaluation of National Resource Management (NRM) products.
Conservative value based on 15 years of NRM field observations and experience.
331
Ibid; the estimated duty cycles for Novelty Coolers are supported by Select Energy (2004). Cooler Control Measure Impact
Spreadsheet Users’ Manual. Prepared for NSTAR. The study gives a less conservative value than used by NRM.
330
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
179
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Life
The measure life is 10 years.332
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Novelty Cooler Shutoff
Small Retrofit
1.00
1.00
1.00
1.00
1.00
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs’ programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Energy RR based on staff estimates.
Coincidence Factors
Coincidence factors are set to zero since demand savings typically occur during off-peak hours.
332
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
180
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – ECM Evaporator Fan Motors for Walk–in Coolers and Freezers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of various sizes of electronically commutated motors (ECMs) in walkin coolers and freezers to replace existing evaporator fan motors.333
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
∆kWh = ∆kWhFan + ∆kWhHeat
∆kWhFan = kWFan * LRF *Hours
∆kWhHeat = ∆kWhFan * 0.28 * Eff RS
∆kW = ∆kWh / Hours
Where:
∆kWhFan =
∆kWhHeat =
kWFan
=
LRF
Hours
0.28
=
=
=
EffRS
=
Energy savings due to increased efficiency of evaporator fan motor
Energy savings due to reduced heat from the evaporator fans
Power demand of evaporator fan calculated from equipment nameplate data
and estimated 0.55 power factor/adjustment334
Load reduction factor for motor replacement (65%)335
Annual fan operating hours.
Conversion factor between kW and tons: 3,413 Btuh/kW divided by 12,000
Btuh/ton
Efficiency of typical refrigeration system: 1.6 kW/ton336
Baseline Efficiency
The baseline efficiency case is an existing evaporator fan motor.
High Efficiency
The high efficiency case is the replacement of existing evaporator fan motors with ECMs.
333
The savings assumptions are based on experience with and evaluation of National Resource Management (NRM) products.
Conservative value based on 15 years of NRM field observations and experience.
335
Load factor is an estimate by NRM based on several pre- and post-meter readings of installations; the value is supported by
RLW Analytics (2007). Small Business Services Custom Measure Impact Evaluation. Prepared for National Grid.
336
Assumed average refrigeration efficiency for typical installations. Conservative value based on 15 years of NRM field
observations and experience. Value supported by Select Energy (2004). Cooler Control Measure Impact Spreadsheet Users’
Manual. Prepared for NSTAR.
334
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Hours
The annual operating hours are assumed to be 8,760 * (1-%OFF), where %OFF = 0 if the facility does not
have evaporator fan controls or %OFF > 0 if the facility has evaporator fan controls. See section:
Refrigeration – Evaporator Fan Controls for %OFF value.
Measure Life
The measure life is 15 years.337
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings338
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Evap Fan ECMs
Small Retrofit
1.00
1.00
1.00
1.00
1.00
0.87
0.51
In-Service Rates
All installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
RRs set to 100% since changes to calculation methodology made based on 2005 Custom SBS program evaluation 339
Coincidence Factors
Derived from 2007 Custom Small Business Impact evaluation.340
337
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The MA Joint Utilities; 15-year measure life for
retrofit motor installations.
338
RLW Analytics (2007). Small Business Services Custom Measure Impact Evaluation. Prepared for National Grid
339
RLW Analytics (2007). Impact Evaluation Analysis of the 2005 Custom SBS Program. Prepared for National Grid.
340
RLW Analytics (2007). Impact Evaluation Analysis of the 2005 Custom SBS Program. Prepared for National Grid.
Derivation based on site specific results from the study adjusted for current on peak hours.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
182
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – Case Motor Replacement
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of electronically commutated motors (ECMs) in multi-deck and
freestanding coolers and freezers, typically on the retail floor of convenience stores, liquor stores,
and grocery stores.341
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impacts
∆kWh = ∆kWh Motor + ∆kWh Heat
∆kWh motor = kW Motor * LRF * Hours
∆kWh heat = ∆kWh Motor * 0.28 * Eff RS
∆ kW = ∆ kWh / Hours
Where:
∆kWhMotor
∆kWhHeat
kWmotor
LRF
=
=
=
=
Hours
0.28
EffRS
=
=
=
Energy savings due to increased efficiency of case motor
Energy savings due to reduced heat from evaporator fans
Metered load of case motor
Load reduction factor: 53% when shaded pole motors are replaced, 29%
when PSC motors are replaced342
Average runtime of case motors (8,500 hours)343
Conversion of kW to tons: 3,413 Btu/h/kW divided by 12,000 Btu/h/ton.
Efficiency of typical refrigeration system (1.6 kW/ton) 344
Baseline Efficiency
The baseline efficiency case is the existing case motor.
High Efficiency
The high efficiency case is the replacement of the existing case motor with an ECM.
341
The savings assumptions are based on experience with and evaluation of National Resource Management (NRM) products.
Load factor is an estimate by NRM based on several pre- and post-meter readings of installations
343
Conservative value based on 15 years of NRM field observations and experience.
344
Assumed average refrigeration efficiency for typical installations. Conservative value based on 15 years of NRM field
observations and experience. Value supported by Select Energy (2004). Cooler Control Measure Impact Spreadsheet Users’
Manual. Prepared for NSTAR.
342
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Hours
Hours are the annual operating hours of the case motors.
Measure Life
The measure life is 15 years.345
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Case ECMs
Small Retrofit
1.00
1.00
1.00
1.00
1.00
0.87
0.51
In-Service Rates
All installations have 100% in service rate since all PAs’ programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
National Grid RRs set to 100% since changes to calculation methodology made based on 2005 Custom SBS
program evaluation. 346
Coincidence Factors
Derived from 2007 Custom Small Business Impact evaluation.347
345
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; 15-year measure
life for retrofit motor installations.
346
RLW Analytics (2007). Impact Evaluation Analysis of the 2005 Custom SBS Program. Prepared for National Grid.
347
RLW Analytics (2007). Impact Evaluation Analysis of the 2005 Custom SBS Program. Prepared for National Grid.
Derivation based on site specific results from the study adjusted for current on peak hours.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
184
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – Cooler Night Covers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of retractable aluminum woven fabric covers for open-type refrigerated display
cases, where the covers are deployed during the facility unoccupied hours in order to reduce refrigeration
energy consumption.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
∆kWh = (Width)(Save)( Hours)
∆kW = (Width)(Save)
Where:
Width =
Save
=
Hours =
Width of the opening that the night covers protect (ft)
Savings factor based on the temperature of the case (kW/ft). See Table 20.
Annual hours that the night covers are in use
Table 20: Savings Factors for Cooler Night Covers348
Cooler Case Temperature
Low Temperature (-35 F to -5 F)
Medium Temperature (0 F to 30 F)
High Temperature (35 F to 55 F)
Savings Factor
0.03 kW/ft
0.02 kW/ft
0.01 kW/ft
Baseline Efficiency
The baseline efficiency case is the annual operation of open-display cooler cases.
High Efficiency
The high efficiency case is the use of night covers to protect the exposed area of display cooler cases
during unoccupied hours.
Hours
Hours represent the number of annual hours that the night covers are in use, and should be determined on
a case-by-case basis.
348
CL&P Program Savings Documentation for 2011 Program Year (2010). Factors based on Southern California Edison (1997).
Effects of the Low Emissive Shields on Performance and Power Use of a Refrigerated Display Case. If the cooler temperature
falls between the given temperature ranges, the program implementer should make best guess to fit the cooler to a given range.
November 2011
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Life
The measure life is 10 years.349
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Cooler Night Cover
Small Retrofit
1.00
1.00
1.00
1.00
1.00
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs’ programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
National Grid: RRs set to 100% based on no evaluations.
Coincidence Factors
Coincidence factors are set to zero since demand savings typically occur during off-peak hours.
349
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Page 4-5 to 4-6.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
186
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – Electronic Defrost Control
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: A control mechanism to skip defrost cycles when defrost is unnecessary.350
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impacts
∆kWh = ∆kWhDefrost + ∆kWhHeat
∆kWh Defrost = kW Defrost * Hours * DRF
∆kWh Heat = ∆kWh Defrost * 0.28 * Eff RS
∆kW = ∆kWh / Hours
Where:
∆kWhDefrost =
∆kWhHeat
kWDefrost
Hours
DRF
=
=
=
=
0.28
EffRS
=
=
Energy savings resulting from an increase in operating efficiency due to the
addition of electronic defrost controls.
Energy savings due to reduced heat from reduced number of defrosts.
Load of electric defrost.
Number of hours defrost occurs over a year without the defrost controls.
Defrost reduction factor- percent reduction in defrosts required per year
(35%)351
Conversion of kW to tons: 3,413 Btu/h/kW divided by 12,000 Btu/h/ton.
Efficiency of typical refrigeration system (1.6 kW/ton)352
Baseline Efficiency
The baseline efficiency case is an evaporator fan electric defrost system that uses a time clock mechanism
to initiate defrost.
High Efficiency
The high efficiency case is an evaporator fan defrost system with electric defrost controls.
350
The savings assumptions are based on experience with and evaluation of National Resource Management (NRM) products.
Ibid; supported by 3rd party evaluation: Independent Testing was performed by Intertek Testing Service on a Walk-in Freezer
that was retrofitted with Smart Electric Defrost capability.
352
Assumed average refrigeration efficiency for typical installations. Conservative value based on 15 years of NRM field
observations and experience. Value supported by Select Energy (2004). Cooler Control Measure Impact Spreadsheet Users’
Manual. Prepared for NSTAR.
351
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Hours
The number of defrost cycles is estimated to decrease by 35% from an average number of defrost cycles
of 1460 defrosts/year at 40 minutes each for a total of 973 hours/year. 353 The number of defrost cycles
with the defrost controls is 949 cycles/year, or 633 hours/year.
Measure Life
The measure life is 10 years.354
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
Defrost Control
Small Retrofit
ISR
1.00
SPF
1.00
RRE
RRSP
RRWP
CFSP
CFWP
1.00
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PAs’ programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
RRs set to 100% based on no evaluations.
Coincidence Factors
Coincidence factors set to 1.00 since gross kW is the average kW reduction during operation.
353
354
Conservative value based on 15 years of NRM field observations and experience.
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
188
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – Evaporator Fan Controls
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of controls to modulate the evaporator fans based on temperature
control. Energy savings include: fan energy savings from reduced fan operating hours,
refrigeration energy savings from reduced waste heat, and compressor energy savings resulting
from the electronic temperature control. Electronic controls allow less fluctuation in temperature,
thereby creating savings.355
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
∆kWh = ∆kWhFan + ∆kWhHeat +∆kWhControl
∆kWhFan = kWFan * 8760 * %OFF
∆kWhHeat = ∆kWhFan * 0.28 * Eff RS
∆kWhControl = [kWCP * HoursCP + kWFan * 8760 * (1 − %Off )] * 5%
∆kW = ∆kWh / 8760
Where:
∆kWhFan
∆kWhHeat
∆kWhControl
kWFan
=
=
=
=
%OFF
0.28
EffRS
kWCP
=
=
=
=
Energy savings due to evaporator being shut off
Energy savings due to reduced heat from the evaporator fans
Energy savings due to the electronic controls on compressor and evaporator
Power demand of evaporator fan calculated from equipment nameplate data
and estimated 0.55 power factor/adjustment356
Percent of annual hours that the evaporator is turned off: 46%357
Conversion of kW to tons: 3,413 Btuh/kW divided by 12,000 Btuh/ton.
Efficiency of typical refrigeration system: 1.6 kW/ton358
Total power demand of compressor motor and condenser fan calculated from
equipment nameplate data and estimated 0.85 power factor359
355
The savings assumptions are based on experience with and evaluation of National Resource Management (NRM) products.
Conservative value based on 15 years of NRM field observations and experience.
357
The value is an estimate by NRM based on hundreds of downloads of hours of use data. These values are also supported by
Select Energy (2004). Cooler Control Measure Impact Spreadsheet User’s Manual. Prepared for NSTAR.
358
Assumed average refrigeration efficiency for typical installations. Conservative value based on 15 years of NRM field
observations and experience. Value supported by Select Energy (2004). Cooler Control Measure Impact Spreadsheet Users’
Manual. Prepared for NSTAR.
359
This value is an estimate by NRM based on hundreds of downloads of hours of use data form the electronic controller.
356
November 2011
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189
Rhode Island TRM
HoursCP
5%
=
=
Commercial and Industrial Electric Efficiency Measures
Equivalent annual full load hours of compressor operation: 4,072 hours360
Reduced run-time of compressor and evaporator due to electronic controls361
Baseline Efficiency
The baseline efficiency case assumes evaporator fans that run 8760 annual hours with no temperature
control.
High Efficiency
The high efficiency case is the use of an energy management system to control evaporator fan operation
based on temperature.
Hours
The operation of the fans is estimated to be reduced by 46% from the 8,760 hours in the base case
scenario.
Measure Life
The measure life is 10 years362.
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
Evap Fan Control
Small Retrofit
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
1
1
0.58
1.00
1.00
0.23
0.84
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates from 1996 savings analysis363
Coincidence Factors
Coincidence factors from 1996 savings analysis364
360
Conservative value based on 15 years of NRM field observations and experience.
Conservative estimate supported by less conservative values given by several utility-sponsored 3rd Party studies including:
Select Energy (2004). Analysis of Cooler Control Energy Conservation Measures. Prepared for NSTAR.
362
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
363
HEC, Inc. (1996). Analysis of Savings from Walk-In Cooler Air Economizers and Evaporator Fan Controls. Prepared for
NEPSCo.
364
HEC, Inc. (1996). Analysis of Savings from Walk-In Cooler Air Economizers and Evaporator Fan Controls. Prepared for
NEPSCo.
361
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
190
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Refrigeration – Vending Misers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Controls can significantly reduce the energy consumption of vending machine
lighting and refrigeration systems. Qualifying controls must power down these systems during
periods of inactivity but, in the case of refrigerated machines, must always maintain a cool
product that meets customer expectations. This measure applies to refrigerated beverage vending
machines, non-refrigerated snack vending machines, and glass front refrigerated coolers. This
measure should not be applied to ENERGY STAR® qualified vending machines, as they already
have built-in controls.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Refrigeration
Program: Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithms and assumptions:
∆kWh = (kWRATED )(Hours)(SAVE)
∆kW = ∆kWh / Hours
Where:
kWrated
=
Hours
SAVE
=
=
Rated kW of connected equipment. See Table 21 for default rated kW by
connected equipment type.
Operating hours of the connected equipment: default of 8,760 hours
Percent savings factor for the connected equipment. See Table 21 for
values.
Table 21: Savings Factors for Vending Misers365
Equipment Type
Refrigerated Beverage Vending Machines
Non-Refrigerated Snack Vending Machines
Glass Front Refrigerated Coolers
kWRATED
0.40
0.085
0.46
SAVE (%)
46
46
30
∆kW
0.184
0.039
0.138
∆kWh
1612
343
1208
Baseline Efficiency
The baseline efficiency case is a standard efficiency refrigerated beverage vending machine, nonrefrigerated snack vending machine, or glass front refrigerated cooler without a control system capable of
powering down lighting and refrigeration systems during periods of inactivity.
365
USA Technologies Energy Management Product Sheets (2006). Accessed on 09/01/2009.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
191
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
High Efficiency
The high efficiency case is a standard efficiency refrigerated beverage vending machine, non-refrigerated
snack vending machine, or glass front refrigerated cooler with a control system capable of powering down
lighting and refrigeration systems during periods of inactivity.
Hours
It is assumed that the connected equipment operates 24 hours per day, 7 days per week for a total annual
operating hours of 8,760.
Measure Life
The measure life is 5 years.366
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
Vending Misers EI
Vending Misers SBS
PA
ISR SPF RRE RRSP RRWP CFSP CFWP
National Grid
National Grid
1.00 1.00 1.00 1.00
1.00 1.00 1.00 1.00
1.00
1.00
0.00
0.00
0.00
0.00
In-Service Rates
All installations have 100% in service rate since all PAs’ programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
RRs set to 100% since savings estimated are based on study results.
Coincidence Factors
CFs based on staff estimates.
366
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
192
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Food Service – Commercial Electric Steam Cooker
Version Date and Revision History
Draft date: 07/08/2011
Effective date: 01/01/2012
End date: TBD
Measure Overview
Description: Installation of a qualified ENERGY STAR® commercial steam cooker. ENERGY
STAR® steam cookers save energy during cooling and idle times due to improved cooking
efficiency and idle energy rates.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: Water, Wastewater
Sector: Commercial
Market: Lost Opportunity
End Use: Food Service
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impacts
Unit savings are deemed based on study results:
∆ kWh = ∆ kWh
∆ kW = ∆ kWh / Hours
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Installation of high efficiency equipment
gross annual kWh savings from the measure: 9,774 367
gross connected kW savings from the measure: 2.23 (calculated)
Average annual equipment operating hours
Baseline Efficiency
The Baseline Efficiency case is a conventional electric steam cooker with a cooking energy efficiency of
30%, pan production capacity of 23.3 pounds per hour, and an idle energy rate of 1.2 kW.
High Efficiency
The High Efficiency case is an ENERGY STAR® electric steam cooker with a cooking energy efficiency
of 50%, pan production capacity of 16.7 pounds per hour, and an idle energy rate of 0.4 kW.
Hours
The average steam cooker is assumed to operate 4,380 hours per year368.
Measure Life
The measure life for a new steam cooker is 12 years369.
367
Environmental Protection Agency (2011). Savings Calculator for ENERGY STAR Qualified Commercial Kitchen Equipment:
Steam Cooker Calcs. Accessed on 10/12/2011.
368
Ibid.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Water and wastewater is saved due to the improved cooking efficiency of the high efficiency equipment.
Savings370
Benefit Type
Description
C&I Water
C&I WasteWater
Annual water savings per unit
Annual wastewater savings per unit
162,060 gallons/unit
162,060 gallons/unit
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Electric Steam Cooker
D2
1.00
1.00
1.00
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
100% realization rates are assumed because savings are based on researched assumptions by ENERGY STAR®.
Coincidence Factors
Coincidence factors are 1.0 for both summer and winter seasons because the cooking equipment is assumed to
operate throughout the on-peak demand periods.
369
370
Ibid.
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
194
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Food Service – Commercial Electric Griddle
Version Date and Revision History
Draft date: 07/08/2011
Effective date: 01/01/2012
End date: TBD
Measure Overview
Description: Installation of a qualified ENERGY STAR® griddle. ENERGY STAR® griddles
save energy during preheat, cooking and idle times due to improved cooking efficiency, and
preheat and idle energy rates.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial
Market: Lost Opportunity
End Use: Food Service
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impacts
Unit savings are deemed based on study results:
∆ kWh = ∆ kWh
∆ kW = ∆ kWh / Hours
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Installation of high efficiency equipment
gross annual kWh savings from the measure: 2,537 371
gross connected kW savings from the measure: 0.58 (calculated)
Average annual equipment operating hours
Baseline Efficiency
The baseline efficiency case is a conventional 3-foot wide electric griddle with a cooking energy
efficiency of 60%, production capacity of 35 pounds per hour, preheat energy of 4 kWh and an idle
energy rate of 2.4 kW.
High Efficiency
The high efficiency case is an ENERGY STAR® 3-foot wide electric griddle with a cooking energy
efficiency of 70%, production capacity of 40 pounds per hour, preheat energy of 2 kWh and an idle
energy rate of 2.13 kW.
Hours
The average steam cooker is assumed to operate 4,380 hours per year372.
371
372
Food Service Technology Center (2011). Electric Griddle Life-Cycle Cost Calculator. Accessed on 10/12/2011.
Food Service Technology Center (2011). Electric Griddle Life-Cycle Cost Calculator. Accessed on 10/12/2011.
November 2011
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ALL RIGHTS RESERVED
195
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Life
The measure life for a new steam cooker is 12 years373.
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Electric Griddle
D2
1.00
1.00
1.00
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
100% realization rates are assumed because savings are based on researched assumptions by FSTC.
Coincidence Factors
Coincidence factors are 1.0 for both summer and winter seasons because the cooking equipment is assumed to
operate throughout the on-peak demand periods.
373
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
196
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Food Service – Commercial Electric Ovens
Version Date and Revision History
Draft date: 07/08/2011
Effective date: 01/01/2012
End date: TBD
Measure Overview
Description: Installation of a qualified ENERGY STAR® commercial oven. ENERGY STAR®
commercial ovens save energy during preheat, cooking and idle times due to improved cooking
efficiency, and preheat and idle energy rates.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial
Market: Lost Opportunity
End Use: Food Service
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impacts
Unit savings are deemed based on study results:
∆ kWh = ∆ kWh
∆ kW = ∆ kWh / Hours
Where:
Unit
∆kWh
∆kW
Hours
=
=
=
=
Installation of high efficiency equipment
gross annual kWh savings from the measure. See Table 22.
gross connected kW savings from the measure. See Table 22.
Average annual equipment operating hours
Table 22: Savings for C&I Commercial Electric Ovens
Equipment Type
Efficiency Requirement ∆kWh
Electric Convection Oven >= 70%
2,262
374
∆kW
0.52
Baseline Efficiency
The baseline efficiency case is a convection oven with a cooking energy efficiency of 65%, production
capacity of 70 pounds per hour, preheat energy of 1.5 kWh and idle energy rate of 2.0 kW.
High Efficiency
The high efficiency case is a convection oven with a cooking energy efficiency of 70%, production
capacity of 80 pounds per hour, preheat energy of 1.0 kWh and idle energy rate of 1.5 kW.
Hours
The average commercial oven is assumed to operate 4,380 hours per year375.
374
Pacific Gas & Electric Company – Customer Energy Efficiency Department (2007). Work Paper PGECOFST101,
Commercial Convection Oven, Revision #0.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
197
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Life
The measure life for a new commercial electric oven is 12 years376.
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Electric Convection Oven
D2
1.00
1.00
1.00
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
100% realization rates are assumed because savings are based on researched assumptions by FSTC.
Coincidence Factors
Coincidence factors are 1.0 for both summer and winter seasons because the cooking equipment is assumed to
operate throughout the on-peak demand periods.
375
Pacific Gas & Electric Company – Customer Energy Efficiency Department (2007). Work Paper PGECOFST101,
Commercial Convection Oven, Revision #0.
376
Pacific Gas & Electric Company – Customer Energy Efficiency Department (2007). Work Paper PGECOFST101,
Commercial Convection Oven, Revision #0.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
198
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Compressed Air – High Efficiency Air Compressors
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Covers the installation of oil flooded, rotary screw compressors with Load/No
Load, Variable Speed Drive, or Variable Displacement capacity control with properly sized air
receiver. Efficient air compressors use various control schemes to improve compression
efficiencies at partial loads. When an air compressor fitted with Load/No Load, Variable Speed
Drive, or Variable Displacement capacity controls is used in conjunction with a properly-sized air
receiver, considerable amounts of energy can be saved.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity, Retrofit
End Use: Compressed Air
Program: Design 2000plus, Energy Initiative
Algorithms for Calculating Primary Energy Impacts
∆kWh = (HPCOMPRESSOR )(SAVE )(Hours)
∆kW = (HPCOMPRESSOR )(SAVE )
Where:
HPCOMPRESSOR
Save
Hours
=
=
=
Nominal rated horsepower of high efficiency air compressor.
Air compressor kW reduction per HP. See Table 23 for values.
Annual operating hours of the air compressor.
Table 23: Savings Factors for C&I Air Compressors (kW/HP)
Control Type
Nominal
Horsepower (HP)
kW Reduction per Horsepower (Save)377
Lost Opportunity
Retrofit
Load/No Load
≥15 and <25
0.076
0.102
Load/No Load
≥25 and <=75
0.114
0.102
VSD
≥15 and <25
0.159
0.207
VSD
≥25 and <=75
0.228
0.206
Variable Displacement
≥50 and <=75
0.110
0.116
Baseline Efficiency
The baseline efficiency case is a typical modulating compressor with blow down valve.
377
From NSTAR analysis based on metering data. The location of original data and analysis is unknown; however, these values
are supported by multiple 3rd party impact evaluations.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
199
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
High Efficiency
The high efficient case is an oil-flooded, rotary screw compressor with Load/No Load, Variable Speed
Drive, or Variable Displacement capacity control with a properly sized air receiver. Air receivers are
designed to provide a supply buffer to meet short-term demand spikes which can exceed the compressor
capacity. Installing a larger receiver tank to meet occasional peak demands can allow for the use of a
smaller compressor.
Hours
The annual hours of operation for air compressors are site-specific and should be determined on a caseby-case basis.
Measure Life
For lost-opportunity installations, the lifetime for this measure is 15 years. For retrofit projects, the
lifetime is 13 years.378
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Air Compressor
Air Compressor
D2
EI
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.80
0.80
0.54
0.54
In-Service Rates
All installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
RRs based on impact evaluation of PY 2004 compressed air installations.379
Coincidence Factors
CFs based on impact evaluation of PY 2004 compressed air installations.380
378
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
Ibid.
380
DMI (2006). Impact Evaluation of 2004 Compressed Air Prescriptive Rebates. Prepared for National Grid. Results analyzed
in RLW Analytics (2006). Sample Design and Impact Evaluation Analysis for Prescriptive Compressed Air Measures in the
Energy Initiative and Design 2000 Programs. Prepared for National Grid.
379
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
200
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Compressed Air – Refrigerated Air Dryers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of cycling or variable frequency drive (VFD)-equipped refrigerated
compressed air dryers. Refrigerated air dryers remove the moisture from a compressed air system
to enhance overall system performance. An efficient refrigerated dryer cycles on and off or uses a
variable speed drive as required by the demand for compressed air instead of running
continuously. Only properly sized refrigerated air dryers used in a single-compressor system are
eligible.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: Compressed Air
Program: Design 2000plus
Algorithms for Calculating Primary Energy Impact
∆kWh = (CFM DRYER )(SAVE)(Hours)
∆kW = (CFM DRYER )(SAVE)
Where:
CFMDRYER
=
Save
=
Hours
=
Full flow rated capacity of the refrigerated air dryer in cubic feet per minute
(CFM). Obtain from equipment’s Compressed Air Gas Institute Datasheet.
Refrigerated air dryer kW reduction per dryer full flow rated CFM. See Table
24.
Annual operating hours of the refrigerated air dryer.
Table 24: Savings Factors for C&I Air Dryers (kW/CFM)
Dryer Capacity (CFMDRYER)
<100
≥100 and <200
≥200 and <300
≥300 and <400
≥400
kW Reduction per CFM (Save) 381
0.00474
0.00359
0.00316
0.00290
0.00272
Baseline Efficiency
The baseline efficiency case is a non-cycling refrigerated air dryer.
381
From NSTAR analysis based on metering data. The location of original data and analysis is unknown; however, these values
are supported by multiple 3rd party impact evaluations.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
201
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
High Efficiency
The high efficiency case is a cycling refrigerated dryer or a refrigerated dryer equipped with a VFD.
Hours
The annual hours of operation for compressed air dryers are site-specific.
Measure Life
The measure life is 15 years.382
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Refrigerated Air Dryers
D2
1.00
1.00
1.00
1.00
1.00
0.80
0.54
In-Service Rates
All installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
RRs based on impact evaluation of PY 2004 compressed air installations.383
Coincidence Factors
CFs based on impact evaluation of PY 2004 compressed air installations.384
382
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
DMI (2006). Impact Evaluation of 2004 Compressed Air Prescriptive Rebates. Prepared for National Grid. Results analyzed
in RLW Analytics (2006). Sample Design and Impact Evaluation.
384
DMI (2006). Impact Evaluation of 2004 Compressed Air Prescriptive Rebates. Prepared for National Grid. Results analyzed
in RLW Analytics (2006). Sample Design and Impact Evaluation.
383
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
202
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Compressed Air – Low Pressure Drop Filters
Version Date and Revision History
Effective Date: 1/1/2011
TBD
End Date:
Measure Overview
Description: Filters remove solids and aerosols from compressed air systems. Low pressure drop
filters have longer lives and lower pressure drops than traditional coalescing filters resulting in
higher efficiencies.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity & Retrofit
End Use: Compressed Air
Program: C&I New Construction, C&I Large Retrofit
Algorithms for Calculating Primary Energy Impacts
∆kWh = (Quantity )(HPCOMP )(0.7457 )(% Savings )(Hours )
∆kW = (Quantity)( HPCOMP )(0.7457)(% Savings)
Where:
∆kWh
∆kW
Quantity
HPCOMP
0.7457
% Savings
Hours
=
=
=
=
=
=
=
Energy savings
Demand savings
Number of filters installed
Average compressor load
Conversion from HP to kW
Percent change in pressure drop. Site specific.
Annual operating hours of the lower pressure drop filter.
Baseline Efficiency
The baseline efficiency case is a standard coalescing filter with initial drop of between 1 and 2 pounds per
sq inch (psi) with an end of life drop of 10 psi.
High Efficiency
The high efficiency case is a low pressure drop filter with initial drop not exceeding 1 psi over life and 3
psi at element change. Filters must be deep-bed, “mist eliminator” style and installed on a single operating
compressor rated 15 – 75 HP.
Hours
The annual hours of operation are site specific and will be determined on a case by case basis.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
203
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Measure Life
For lost-opportunity installations, the lifetime for this measure is 5 years. For retrofit projects, the lifetime
is 3 years.385
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP CFSSP CFWSP
LP Drop Filter NC, Large Retrofit 1.00 1.00 1.00 1.00
1.00
0.80
0.54
0.77
0.54
In-Service Rates
Installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
Assumed 100% savings persistence factor.
Realization Rates
RRs based on impact evaluation of PY 2004 compressed air installations.386
Coincidence Factors
CFs based on impact evaluation of PY 2004 compressed air installations.387
385
Based on typical replacement schedules for low pressure filters.
DMI (2006). Impact Evaluation of 2004 Compressed Air Prescriptive Rebates. Prepared for National Grid; results analyzed in
RLW Analytics (2006). Sample Design and Impact Evaluation Analysis for Prescriptive Compressed Air Measures in the Energy
Initiative and Design 2000 Programs. Prepared for National Grid.
387
DMI (2006). Impact Evaluation of 2004 Compressed Air Prescriptive Rebates. Prepared for National Grid; results analyzed in
RLW Analytics (2006). Sample Design and Impact Evaluation Analysis for Prescriptive Compressed Air Measures in the Energy
Initiative and Design 2000 Programs. Prepared for National Grid.
386
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
204
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Compressed Air – Zero Loss Condensate Drains
Version Date and Revision History
Effective Date: 1/1/2011
TBD
End Date:
Measure Overview
Description: Drains remove water from a compressed air system. Zero loss condensate drains
remove water from a compressed air system without venting any air, resulting in less air demand
and consequently greater efficiency.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity & Retrofit
End Use: Compressed Air
Program: C&I New Construction, C&I Large Retrofit
Algorithms for Calculating Primary Energy Impacts
∆kWh = (CFM pipe )(CFM saved )(SAVE )( Hours)
∆ kW = (CFM
Where:
∆kWh
∆kW
CFMpipe
CFMsaved
Save
Hours
=
=
=
=
=
=
pipe
)(CFM
save
)(SAVE )
Energy Savings
Demand savings
CFM capacity of piping. Site specific.
Average CFM saved per CFM of piping capacity: 0.049
Average savings per CFM: 0.24386 kW/CFM388
Annual operating hours of the zero loss condensate drain.
Baseline Efficiency
The baseline efficiency case is installation of a standard condensate drain on a compressor system.
High Efficiency
The high efficiency case is installation of a zero loss condensate drain on a single operating compressor
rated ≤ 75 HP.
Hours
The annual hours of operation are site specific and will be determined on a case by case basis.
Measure Life
For lost-opportunity installations, the lifetime for this measure is 15 years. For retrofit projects, the
lifetime is 13 years.389
388
Based on regional analysis assuming a typical timed drain settings discharge scenario.
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1. Drains
not expected to change during life of compressor.
389
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
205
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP CFSSP CFWSP
Zero Loss Drain NC, Large Retrofit 1.00 1.00 1.00 1.00
1.00
0.80
0.54
0.77
0.54
In-Service Rates
Installations have 100% in service rate since PA programs include verification of equipment installations.
Savings Persistence Factor
Assumed 100% savings persistence factor.
Realization Rates
RRs based on impact evaluation of PY 2004 compressed air installations.390
Coincidence Factors
CFs based on impact evaluation of PY 2004 compressed air installations.391
390
DMI (2006). Impact Evaluation of 2004 Compressed Air Prescriptive Rebates. Prepared for National Grid; results analyzed in
RLW Analytics (2006). Sample Design and Impact Evaluation Analysis for Prescriptive Compressed Air Measures in the Energy
Initiative and Design 2000 Programs. Prepared for National Grid.
391
DMI (2006). Impact Evaluation of 2004 Compressed Air Prescriptive Rebates. Prepared for National Grid; results analyzed in
RLW Analytics (2006). Sample Design and Impact Evaluation Analysis for Prescriptive Compressed Air Measures in the Energy
Initiative and Design 2000 Programs. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
206
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Motors/Drives – Variable Frequency Drives
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure covers the installation of variable speed drives according to the terms
and conditions stated on the statewide worksheet. The measure covers multiple end use types and
building types. The installation of this measure saves energy since the power required to rotate a
pump or fan at lower speeds requires less power than when rotated at full speed.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity, Retrofit
End Use: Motors/Drives
Program: Design 2000plus, Energy Initiative
Algorithms for Calculating Primary Energy Impacts
 1
∆kWh = (HP)
 η motor

(kWh / HP)

 1
∆kW = ( HP)
 η motor

(kW / HP)SP

Where:
ηmotor
kWh/HP
kW/HPSP
kW/HPWP
=
=
=
=
Motor efficiency
Annual electric energy reduction based on building and equipment type. See Table 25.
Electric summer demand reduction based on building and equipment type. See Table 25.
Electric winter demand reduction based on building and equipment type. See Table 25.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
207
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Boiler Feed Water
Pump
Hot Water
Circulating. Pump
MAF - Make-up
Air Fan
Return Fan
Supply Fan
WS Heat Pump
Circulating Loop
Annual Energy Savings Factors (kWh/HP)
University/College
3,641 449
Elm/H School
3,563 365
Multi-Family
3,202 889
Hotel/Motel
3,151 809
Health
3,375 1,705
Warehouse
3,310 455
Restaurant
3,440 993
Retail
3,092 633
Grocery
3,126 918
Offices
3,332 950
Summer Demand Savings Factors (kW/HPSP)
University/College
0.109 -0.023
Elm/H School
0.377 -0.023
Multi-Family
0.109 -0.023
Hotel/Motel
0.109 -0.023
Health
0.109 -0.023
Warehouse
0.109 -0.023
Restaurant
0.261 -0.023
Retail
0.109 -0.023
Grocery
0.261 -0.023
Offices
0.109 -0.023
Winter Demand Savings Factors (kW/HPWP)
University/College
0.377 -0.006
Elementary/High School
0.457 -0.006
Multi-Family
0.109 -0.006
Hotel/Motel
0.109 -0.006
Health
0.377 -0.006
Warehouse
0.377 -0.006
Restaurant
0.109 -0.006
Retail
0.109 -0.006
Grocery
0.457 -0.006
Offices
0.457 -0.006
Chilled Water
Pump
Cooling Tower Fan
Building Exhaust
Fan
Table 25: Savings Factors for C&I VFDs (kWh/HP and kW/HP)392
745
628
1,374
1,239
2,427
816
1,566
1,049
1,632
1,370
2,316
1,933
2,340
2,195
2,349
2,002
1,977
1,949
1,653
1,866
2,344
1,957
2,400
2,239
2,406
2,087
2,047
2,000
1,681
1,896
3,220
3,402
3,082
3,368
3,002
3,229
2,628
2,392
2,230
3,346
1,067
879
1,374
1,334
1,577
1,253
1,425
1,206
1,408
1,135
1,023
840
1,319
1,290
1,487
1,205
1,363
1,146
1,297
1,076
3,061
2,561
3,713
3,433
3,670
2,818
3,542
2,998
3,285
3,235
0.056
0.056
0.056
0.056
0.056
0.056
0.056
0.056
0.056
0.056
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.109
0.109
0.109
0.109
0.109
0.261
0.109
0.109
0.109
0.109
0.102
0.102
0.102
0.102
0.102
0.102
0.102
0.102
0.102
0.102
0.064
0.064
0.064
0.064
0.064
0.064
0.064
0.064
0.064
0.064
0.056
0.275
0.056
0.056
0.056
0.056
0.178
0.056
0.178
0.056
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.355
0.418
0.275
0.178
0.355
0.275
0.418
0.418
0.457
0.457
0.384
0.444
0.298
0.193
0.384
0.298
0.444
0.444
0.109
0.109
0.109
0.109
0.109
0.261
0.109
0.109
0.109
0.109
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.113
0.457
0.457
0.355
0.418
0.275
0.178
0.355
0.275
0.418
0.418
Baseline Efficiency
The baseline efficiency case for this measure varies with the equipment type. All baselines assume either
a constant speed motor or 2-speed motor. In the baselines, air or water volume/temperature is controlled
using valves, dampers, and/or reheats.
392
Chan, Tumin (2010). Formulation of a Prescriptive Incentive for the VFD and Motors & VFD Impacts Tables at NSTAR.
Prepared for NSTAR.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
208
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
High Efficiency
In the high efficiency case, pump flow or fan air volume is directly controlled using downstream
information. The pump or fan will automatically adjust its speed based on inputted set points and the
downstream feedback it receives.
Hours
Hours vary by end use and building type.
Measure Life
For lost-opportunity installations, the lifetime for this measure is 15 years. For retrofit projects, the
lifetime is 13 years.393
Secondary Energy Impacts
There are no secondary energy impacts.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
VFD
VFD
D2
EI
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
In-Service Rates
All installations have 100% in service rate since all PAs programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factors.
Realization Rates
RRs for all PAs set to 1.0 pending impact evaluation.
Coincidence Factors
CFs for all PAs set to 1.0 based summer and winter factors in gross calculation and pending impact evaluation.
393
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
209
Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Custom Measures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The Custom project track is offered for energy efficiency projects involving
complex site-specific applications that require detailed engineering analysis and/or projects which
do not qualify for incentives under any of the prescriptive rebate offering. Projects offered
through the custom approach must pass a cost-effectiveness test based on project-specific costs
and savings.
Primary Energy Impact: Electric
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity, Retrofit
End Use: All
Program: Design 2000plus, Energy Initiative, Small Customers under 200 kW
Algorithms for Calculating Primary Energy Impact
Gross energy and demand savings estimates for custom projects are calculated using engineering analysis
with project-specific details. Custom analyses typically include a weather dependent load bin analysis,
whole building energy model simulation, end-use metering or other engineering analysis and include
estimates of savings, costs, and an evaluation of each project’s cost-effectiveness.
Baseline Efficiency
For Lost Opportunity projects, the baseline efficiency case assumes compliance with the efficiency
requirements as mandated by Rhode Island State Building Code or industry accepted standard practice.
For retrofit projects, the baseline efficiency case is the same as the existing, or pre-retrofit, case for the
facility.
High Efficiency
The high efficiency scenario is specific to the custom project and may include one or more energy
efficiency measures. Energy and demand savings calculations are based on projected or measured
changes in equipment efficiencies and operating characteristics and are determined on a case-by-case
basis. The project must be proven cost-effective in order to qualify for energy efficiency incentives.
Hours
All hours for custom savings analyses should be determined on a case-by-case basis.
Measure Life
For both lost-opportunity and retrofit custom applications, the measure life is determined based on
specific project using the common custom measure life recommendations.394
394
Energy & Resource Solutions (2005). Measure Life Study. Prepared for The Massachusetts Joint Utilities; Table 1-1.
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Rhode Island TRM
Commercial and Industrial Electric Efficiency Measures
Secondary Energy Impacts
No secondary energy impacts are currently claimed for custom projects. If counted, these would be
custom-calculated based on project-specific detail.
Non-Energy Impacts
No non-energy impacts are currently claimed for custom projects. If counted, these would be customcalculated based on project-specific detail.
Impact Factors for Calculating Adjusted Gross Savings
Measure
CHP
Comprehensive
Lighting
HVAC
Process
Verified Performance
Lighting
Refrigeration
Other
Program
D2, EI
D2, EI
D2, EI
D2, EI
D2, EI
EI
Small C&I
Small C&I
Small C&I
ISR
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
SPF
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
RRE
1.00
1.20
1.07
1.10
0.82
1.00
1.04
1.60
0.81
RRSP
1.00
0.84
0.80
1.13
0.80
1.00
1.02
1.49
0.77
RRWP
1.00
0.50
0.73
0.66
0.83
1.00
1.13
0.69
0.53
CFSP
custom
custom
custom
custom
custom
custom
custom
custom
custom
CFWP
custom
custom
custom
custom
custom
custom
custom
custom
custom
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
D2/EI: Realization Rates for the Lighting and Process categories are from the 2010 impact evaluation analysis of the
National Grid 2009 custom program395. Realization Rates for the Comprehensive and HVAC categories are from
the 2011 Impact Evaluation of Custom CDA and HVAC Installations396. Realization Rates for the CHP and
Verified/Performance categories are assumed to be 100% because projects undergo thorough technical review and
estimates are based on post-installation performance verification, respectively.
SBS: Realization Rates are derived from a 2006 impact evaluation of the 2005 SBS program397
Coincidence Factors
For all custom projects, gross summer and winter peak coincidence factors are custom-calculated for each custom
project based on project-specific information. The actual or measured coincidence factors are included in the
summer and winter demand realization rates.
395
KEMA (2010). Sample Design and Impact Evaluation Analysis of 2009 Custom Program. Prepared for National Grid; Table
17.
396
KEMA (2011). Impact Evaluation of Custom Comprehensive and HVAC Installations. Prepared for National Grid.
397
RLW Analytics (2007). Small Business Services Custom Measure Impact Evaluation. Prepared for National Grid; Table 4.
November 2011
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ALL RIGHTS RESERVED
211
Rhode Island TRM
Residential Gas Efficiency Measures
Residential Gas Efficiency Measures
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Boilers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of a new space heating gas-fired boiler.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star Heating System
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installation of high efficiency boiler
Annual MMBtu savings per unit. See Table 26 for values.
Table 26: Savings for Residential Gas Boilers
Equipment Type
Boiler (Forced Hot Water)
Efficiency Rating
AFUE >= 90%
AFUE >= 96%
∆MMBtu
13.7 398
21.3 399
Baseline Efficiency
The baseline efficiency case is a boiler with an AFUE equal to 80%.
High Efficiency
The high efficiency case is a boiler with an AFUE greater than or equal to 90%.
Hours
Not applicable.
Measure Life
The measure life is 20 years.400
398
Nexus Market Research and The Cadmus Group (2010). HEHE Process and Impact Evaluation – Volume 1 Integrated Report
of Findings. Prepared for GasNetworks; Table ES-1.
399
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table A-2a, Measure R-SF-SpH-13.
400
Environmental Protection Agency (2009). Life Cycle Cost Estimate for an ENERGY STAR Qualified Boiler.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Boiler (Forced Hot Water)
ES Heating System
1.00 1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Boiler Reset Controls
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Boiler reset controls are devices that automatically control boiler water temperature
based on outdoor temperature using a software program.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: Energy Star Heating System
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMbtu = ∆MMbtu
Where:
Units
∆MMBtu
=
=
Number of installed Boiler Reset Controls
Annual MMBtu savings per boiler reset control installed: 7.9 MMBtu401
Baseline Efficiency
The baseline efficiency case is a boiler without reset controls.
High Efficiency
The high efficiency case is a boiler with reset controls.
Hours
Not applicable.
Measure Life
The measure life is 15 years.402
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
401
402
ACEEE (2006). Emerging Technologies Report: Advanced Boiler Controls. Prepared for ACEEE; Page 2.
Ibid.
November 2011
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ALL RIGHTS RESERVED
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Residential Gas Efficiency Measures
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Boiler Reset Controls
ES Heating System
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Programmable Thermostats
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of a programmable thermostat which gives the ability to adjust heating
or air-conditioning operating times according to a pre-set schedule.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: Energy Star Heating System
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMbtu = ∆MMbtu
Where:
Units
∆MMBtu
=
=
Number of programmable thermostats installed
Annual MMBtu savings per unit: 7.7 MMBtu403
Baseline Efficiency
The baseline efficiency case is an HVAC system using natural gas to provide space heating without a
programmable thermostat.
High Efficiency
The high efficiency case is an HVAC system that has a programmable thermostat installed.
Hours
Not applicable.
Measure Life
The measure life is 15 years.404
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
403
RLW Analytics (2007). Validating the Impacts of Programmable Thermostats. Prepared for GasNetworks; Page 2.
Conversion factor for CCF to therms is 1.024.
404
Environmental Protection Agency (2010). Life Cycle Cost Estimate for Programmable Thermostats. Accessed on 10/12/2011.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF RRE RRSP
Programmable Thermostats
ES Heating System
1.00 1.00 1.00
n/a
RRWP
CFSP
CFWP
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Furnaces
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of a new high efficiency space heating gas-fired furnace with an
electronically commutated motor (ECM) for the fan.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: Electric405
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star Heating System
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Units
∆MMBtu
=
=
Installation of furnace with ECM
Annual MMBtu savings for a furnace with ECM. See Table 27 for values.
Table 27: Savings for Residential Gas Furnaces
Equipment Type
Furnace (Forced Hot Air) w/ECM
Efficiency
AFUE = 95%
AFUE = 96%
∆MMBtu406
18.0
20.7
Baseline Efficiency
The baseline efficiency case is a 78% AFUE furnace.
High Efficiency
The high efficiency case is a new furnace with AFUE >= 95% with an electronically commutated motor
installed.
Hours
Not applicable.
405
Electric energy and demand savings due to the ECM are described and claimed under the measure “Furnace Fan Motors” in
the Residential Electric Measures section.
406
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks. Value adjusted based on results of: Nexus Market Research and The Cadmus Group (2010). HEHE
Process and Impact Evaluation – Volume 1 Integrated Report of Findings. Prepared for GasNetworks; Table ES-1.
November 2011
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Residential Gas Efficiency Measures
Measure Life
The measure life is 18 years.407
Secondary Energy Impacts
Furnaces equipped with efficient fan motors save electricity from reduced fan energy requirements. See
HVAC – Furnace Fan Motors in the Residential Electric measures section.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP
Furnace (Forced Hot Air) w/ECM
ES Heating System
1.00 1.00 1.00
1.00
1.00
0.25
CFWP
0.16
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Energy and demand realization rates are set to 100% since deemed gross savings values are based on evaluation
results.
Coincidence Factors
Coincidence factors are from HVAC – Furnace Fan Motors.
407
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Gas Residential Furnace.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Heat Recovery Ventilator
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Heat Recovery Ventilators (HRV) can help make mechanical ventilation more cost
effective by reclaiming energy from exhaust airflows.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: Electric
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star Heating System
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Units
∆MMBtu
=
=
Number of heat recovery ventilation systems installed
Annual MMBtu savings per heat recovery ventilation installed: 7.7 MMBtu 408
Baseline Efficiency
The baseline efficiency case is an ASHRAE 62.2-compliant exhaust fan system with no heat recovery.
High Efficiency
The high efficiency case is an exhaust fan system with heat recovery.
Hours
Not applicable.
Measure Life
The measure life is 20 years.409
Secondary Energy Impacts
An electric penalty results due to the increased electricity consumed by the system fans.
408
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table A-2a, Measure R-SF-SpH-19.
409
Ibid.
November 2011
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Measure
Residential Gas Efficiency Measures
Energy Type ∆kW ∆kWh
Heat Recovery Ventilator Electric
0.00 -133410
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Heat Recovery Ventilator
ES Heating System
1.00 1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric demand savings claimed.
Coincidence Factors
Not applicable for this measure since no electric demand savings are claimed.
410
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
223
Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Heating System Replacement
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Replacement of an existing gas heating system with a new high efficiency system.
Electric savings are achieved from reduced run time of the heating system fan(s).
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: Electric
Non-Energy Impact: Low-Income Annual Fire, Illness and Moving Avoidance Benefits
Sector: Low Income
Market: Retrofit
End Use: HVAC
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installation of new high efficiency gas heating system.
Average annual MMBtu savings per unit: 12.2 MMBtu411
Baseline Efficiency
The baseline efficiency case is the existing inefficient heating equipment.
High Efficiency
The high efficiency case is the new efficient heating equipment.
Hours
Not applicable.
Measure Life
The measure life for heating system replacements is 20 years412.
Secondary Energy Impacts
Electric savings are achieved from reduced run time of the heating system fan(s). Unit electric savings
are deemed based on study results.
Measure
Energy Type
∆kW
∆kWh
411
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1.
412
Environmental Protection Agency (2009). Life Cycle Cost Estimate for an ENERGY STAR Qualified Boiler.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
Heating System Replacement (Gas)
Electric
0.024413
194414
Non-Energy Impacts
Benefit Type
Description
Savings
415
Annual Non-Resource Low-Income Annual Fire, Illness and Moving Avoidance Benefit
$203/Participant
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Heating System Replacement (Gas)
Program
Single Family – AMP
ISR
1.00
SPF
1.00
RRE
1.00
RRSP RRWP CFSP CFWP
1.00 1.00 0.03 1.00
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates are set to 100% because savings estimates are based on evaluation and analysis results.
Coincidence Factors
CFs are developed based on Quantec demand allocation methodology 416
413
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
414
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1.
415
Ibid.
416
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
225
Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Weatherization
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of weatherization measures such as air sealing and insulation in gas
heated homes. Electric savings are achieved from reduced run time of the HVAC system fan(s).
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: Electric
Non-Energy Impact: Low-Income Annual Fire, Illness and Moving Avoidance Benefits
Sector: Low Income
Market: Retrofit
End Use: HVAC
Program: Single Family – Appliance Management
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Household with weatherization measures installed
Average annual MMBtu savings per unit. 13.7 MMBtu417
Baseline Efficiency
The baseline efficiency case is the existing home shell.
High Efficiency
The high efficiency case can be a combination of increased insulation, air sealing, duct sealing, and other
improvements to the home shell.
Hours
Not applicable.
Measure Life
The measure life for heating system replacements is 20 years418.
Secondary Energy Impact
Electric savings are achieved from reduced run time of the heating system fan(s). Unit electric savings
are deemed based on study results.
417
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1.
418
Environmental Protection Agency (2009). Life Cycle Cost Estimate for an ENERGY STAR Qualified Boiler.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
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Rhode Island TRM
Measure
Weatherization (Gas)
Residential Gas Efficiency Measures
Energy Type
Electric
∆kW
0.009419
∆kWh
70420
Non-Energy Benefits
Benefit Type
Annual Non-Resource
Description
Savings
421
Low-Income Annual Fire, Illness and Moving Avoidance Benefit
$203/Participant
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Weatherization (Gas)
Single Family - AMP
1.00
1.00
1.00
1.00
1.00
0.03
1.00
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates are set to 100% because savings estimates are based on evaluation and analysis results.
Coincidence Factors
CFs are developed based on Quantec demand allocation methodology 422
419
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
420
The Cadmus Group (2009). Impact Evaluation of the 2007 Appliance Management Program and Low Income Weatherization
Program. Prepared for National Grid; Table 1.
421
Ibid.
422
Estimated using demand allocation methodology described in: Quantec, LLC (2000). Impact Evaluation: Single-Family
EnergyWise Program. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
227
Rhode Island TRM
Residential Gas Efficiency Measures
HVAC – Combo Water Heater/Boiler
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure promotes the installation of a combined high-efficiency boiler and
water heating unit. Combined boiler and water heating systems are more efficient than separate
systems because they eliminate the standby heat losses of an additional tank.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: HVAC
Program: Energy Star Heating System
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMbtu = ∆MMbtu
Where:
Units
∆MMBtu
=
=
Installation of integrated water heater/boiler
Annual MMBtu savings per unit installed. See Table 28 for values.
Table 28: Savings for Residential Combo Water Heater/Boilers
Equipment Type
Combo Water Heater / Condensing Boiler
∆MMBtu
21.1423
Baseline Efficiency
The baseline efficiency case is an 80% AFUE boiler with a 0.594 EF water heater.
High Efficiency
The high efficiency case is an integrated water heater/condensing boiler with a 90% AFUE boiler and a
0.9 EF water heater.
Hours
Not applicable.
Measure Life
The measure life is 20 years.424
423
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks.
424
Environmental Protection Agency (2009). Life Cycle Cost Estimate for an ENERGY STAR Qualified Boiler.
November 2011
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228
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Residential Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
Combo Water Heater/Condensing boiler
ES Heating System 1.00 1.00 1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
229
Rhode Island TRM
Residential Gas Efficiency Measures
Hot Water – Water Heaters
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of high efficiency gas water heaters: Indirect water heaters use a
storage tank that is heated by the main boiler. The energy stored by the water tank allows the
boiler to turn off and on less often, saving considerable energy. Condensing water heaters
recover energy by using either a larger heat exchanger or a second heat exchanger to reduce the
flue-gas temperature to the point that water vapor condenses, thus releasing even more energy.
Stand-alone storage water heaters are high efficiency water heaters that are not combined with
space heating devices. Tankless water heaters circulate water through a heat exchanger to be
heated for immediate use, eliminating the standby heat loss associated with a storage tank.
Primary Energy Impact: Natural Gas (Residential Hot Water)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Lost Opportunity
End Use: Hot Water
Program: Energy Star Heating System
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Units
∆MMBtu
=
=
November 2011
Number of stand-alone storage water heaters installed
Annual MMBtu savings per unit. See Table 29.
© 2011 National Grid
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Residential Gas Efficiency Measures
Table 29: Savings for Residential Gas Water Heaters
Equipment Type
Condensing Water Heater
Indirect Water Heater
Stand-Alone Storage Water Heater
Tankless Water Heater
Efficiency Requirement
EF >= 0.80
TE >= 0.95
w/ENERGY STAR® FHW Boiler
EF >= 0.67
EF >= 0.82
EF >= 0.95
∆MMBtu/Unit
7.40 425
25.0 426
8.0 427
3.7 428
9.7 429
10.3 430
Baseline Efficiency
The baseline efficiency case is a stand-alone tank water heater with an energy factor = 0.575.
High Efficiency
The high efficiency case is a stand-alone storage water heater with an energy factor >= 0.67, a condensing
water heater with an energy factor >= 0.8, a tankless water heater with an energy factor >= 0.82, or an
indirect water heater attached to an ENERGY STAR® rated forced hot water gas boiler.
Hours
Not applicable.
Measure Life
Table 30: Measure Lives for Residential Water Heaters
Equipment Type
Condensing Water Heater
Indirect Water Heater
Stand-Alone Storage Water Heater
Tankless Water Heater
Measure Life (years)
431
15
20 432
13
20
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
425
DOE (2008). ENERGY STAR® Residential Water Heaters: Final Criteria Analysis. Prepared for the DOE; Table 2.
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks.
427
Nexus Market Research and The Cadmus Group (2010). HEHE Process and Impact Evaluation – Volume 1 Integrated Report
of Findings. Prepared for GasNetworks; Table ES-1.
428
DOE (2008). ENERGY STAR® Residential Water Heaters: Final Criteria Analysis. Prepared for the DOE; Table 2.
429
Nexus Market Research and The Cadmus Group (2010). HEHE Process and Impact Evaluation – Volume 1 Integrated Report
of Findings. Prepared for GasNetworks; Table ES-1.
430
DOE (2008). ENERGY STAR® Residential Water Heaters: Final Criteria Analysis. Prepared for the DOE; Page 10. Energy
consumption estimated using the DOE test procedure. Based on the following formula: (41,045 BTU/EF x 365)/100,000.
431
DOE (2008). ENERGY STAR® Residential Water Heaters: Final Criteria Analysis. Prepared for the DOE; Table 2.
432
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table A-2a.
426
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Residential Gas Efficiency Measures
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
Condensing Water Heater
Indirect Water Heater
Stand-Alone Storage Water Heater
Tankless Water Heater
ES Heating System
ES Heating System
ES Heating System
ES Heating System
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Residential Gas Efficiency Measures
MF HVAC – EW Shell Insulation
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Shell insulation upgrades are applied in existing facilities including
improved insulation in attics, basements and sidewalls.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: EnergyWise
Algorithms for Calculating Primary Energy Impact
 1

CorrectionFactor
1
1
 × HDD × 24 ×
∆MMBtu = SQFT × 
−
×
SeasonalEff
1,000,000
 RBASE RBASE + RADD 
Where:
SQFT
RBASE
RADD
HDD
24
CorrectionFactor
SeasonalEff
1/1,000,000
=
=
=
=
=
=
=
=
Square feet of insulation installed (ft2)
Total R-value of the existing attic, basement or sidewall (ft2-hr-°F/Btu)
R-value of the added insulation (ft2-hr-°F/Btu)
Heating degree days (°F-day)
Hours per day (hr/day)
Correction factor determined by auditor (e.g. for seasonal homes): Default = 1.
Heating system seasonal efficiency factor determined by auditor: Default = 0.7
Conversion from Btu to MMBtu
Baseline Efficiency
The baseline efficiency case is characterized by the total R-value of the existing attic, basement or
sidewall (RBASE). This is calculated as the R-value of the existing insulation, estimated by the program
contractor, plus the R-value of the ceiling, floor, or wall (for all projects: RCEILING = 3.36; RFLOOR = 6.16;
RWALL = 6.65).
High Efficiency
The high efficiency case is characterized by the total R-value of the attic after the installation of
additional attic, basement or sidewall insulation. This is calculated as the sum of the existing Rvalue (RBASE) plus the R-value of the added insulation (RADD).
November 2011
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Residential Gas Efficiency Measures
Hours
Heating hours are characterized by the heating degree days for the facility. The total heating
degree days for residential buildings in Rhode Island is assumed to be 4644433.
Measure Life
The measure life is 25 years.434
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
MF Shell Insulation
SF Shell Insulation
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
1.21
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
The energy realization rate for multi-family installations are from the National Grid impact evaluation of the 2010
EnergyWise Multifamily Gas Program.435 The energy realization rate for single family installations is 100% based
on no evaluations.
Coincidence Factors
There are no electric savings for this measure.
433
This value is an average BASE 60 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern
Massachusetts based on NOAA 30-year weather data.
434
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Table 1.
435
The Cadmus Group (2011). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 2010).
Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
234
Rhode Island TRM
Residential Gas Efficiency Measures
MF HVAC – EW Other Insulation
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Insulation upgrades applied in existing facilities.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: EnergyWise
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on program vendor information:
∆MMBtu = ∆MMBtu
Where:
Units
∆MMBtu/Unit
=
=
Total quantity of installed units. Units are defined in Table 31.
Deemed savings per unit installed.
Table 31: Savings for EW Other Insulation
Measure
Existing hatches: weatherstrip, insulate, dam perimeter
Attic staircase cover (Therma-dome)
Unit
Each
Each
∆MMBtu/Unit436
1.382
2.763
Baseline Efficiency
The baseline efficiency case is the existing facility or equipment prior to the implementation of additional
insulation.
High Efficiency
The baseline efficiency case is the existing facility or equipment after the implementation of additional
insulation.
Hours
Not applicable.
Measure Life
The measure life is 15 years.437
436
RISE Engineering.
November 2011
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235
Rhode Island TRM
Residential Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
MF Other Insulation
SF Other Insulation
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
1.21
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
The energy realization rate for multi-family installations are from the National Grid impact evaluation of the 2010
EnergyWise Multifamily Gas Program.438 The energy realization rate for single family installations is 100% based
on no evaluations.
Coincidence Factors
There are no electric savings for this measure.
437
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Table 1. Measure lifetime assumed comparable to air sealing.
438
The Cadmus Group (2011). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 2010).
Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
236
Rhode Island TRM
Residential Gas Efficiency Measures
MF HVAC – EW Air Sealing
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Thermal shell air leaks are sealed through strategic use and location of air-tight
materials.
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: EnergyWise
Algorithms for Calculating Primary Energy Impact
For Single Family homes:
(CFM 50 PRE − CFM 50 POST )
× HDD × 24 × 60 × 0.018 ×
CorrectionFactor
1
×
SeasonalEff
1,000,000
∆MMBtu = BldgVol × ( ACH PRE − ACH POST ) × HDD × 24 × 0.018 ×
CorrectionFactor
1
×
SeasonalEff
1,000,000
∆MMBtu =
LBL
For Multi-Family facilities:
Where:
CFM50PRE
CFM50POST
LBL
BldgVol
ACHPRE
ACHPOST
0.018
HDD
24
60
CorrectionFactor
SeasonalEff
=
=
=
=
=
=
=
=
=
=
=
=
1/1,000,000
=
CFM50 measurement before air sealing (ft3/min)
CFM50 measurement after air sealing (ft3/min)
LBL Factor439
Total volume of the project building (ft3)
Air changes per hour measured before air sealing (1/hr)
Air changes per hour measured after air sealing (1/hr)
Heat capacity of 1 cubic foot of air at 70 °F (Btu/ft3-°F)
Heating degree days (°F-day)
Hours per day (hr/day)
Minutes per hour (min/hr)
Correction factor determined by auditor (e.g. for seasonal homes): Default = 1.
Heating system efficiency factor determined by auditor: Default = 0.7 for homes
heated with natural gas.
Conversion from Btu to MMBtu
439
The LBL Factor is determined as the product of the N-factor and a Height Correction Factor according to BPI Protocol. The
N-factor is assumed to be 18.5 for all installations in New England; the Height Correction Factor is determined based on the
number of stories in the facility.
November 2011
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Rhode Island TRM
Residential Gas Efficiency Measures
Baseline Efficiency
The baseline efficiency case is the existing building before the air sealing measure is implemented. The
baseline building is characterized by the existing CFM50 measurement (CFM50PRE) for single family
homes, or the existing air changes per hour (ACHPRE) for multi-family facilities, which is measured prior
to the implementation of the air sealing measure.
High Efficiency
The baseline efficiency case is the existing building after the air sealing measure is implemented. The
high efficiency building is characterized by the new CFM50 measurement for single family homes
(CFM50POST), or the new air changes per hour (ACHPOST) for multi-family facilities, which is measured
after the air sealing measure is implemented.
Hours
Heating hours are characterized by the heating degree days for the facility. The total heating
degree days for residential buildings in Rhode Island is assumed to be 4644440.
Measure Life
The measure life is 15 years.441
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
MF Air Sealing
SF Air Sealing
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
1.21
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
The energy realization rate for multi-family installations are from the National Grid impact evaluation of the 2010
EnergyWise Multifamily Gas Program.442 The energy realization rate for single family installations is 100% based
on no evaluations.
Coincidence Factors
There are no electric savings for this measure.
440
This value is an average BASE 60 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern
Massachusetts based on NOAA 30-year weather data.
441
GDS Associates, Inc. (2007). Measure Life Report: Residential and Commercial/Industrial Lighting and HVAC Measures.
Prepared for The New England State Program Working Group; Table 1.
442
The Cadmus Group (2011). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 2010).
Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
238
Rhode Island TRM
Residential Gas Efficiency Measures
MF HVAC – EW Programmable Thermostats
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of programmable thermostats
Primary Energy Impact: Natural Gas (Residential Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Residential
Market: Retrofit
End Use: HVAC
Program: EnergyWise
Algorithms for Calculating Primary Energy Impact
∆MMBtu = Btu Base × % SAVE ×
Where:
BtuBASE
%SAVE
1/1,000,000
=
=
=
1
1,000,000
The total annual heating consumption for the facility (Btu)
Average reduction in energy consumption. See Table 32.
Conversion from Btu to MMBtu
Table 32: Savings for EW Thermostats
Equipment Type
Thermostat
Thermostat – Outdoor Reset Control
%SAVE443
3%
11%
Baseline Efficiency
The baseline efficiency case is the existing facility without a programmable thermostat. The
existing facility is characterized by its average annual heating consumption, typically determined
from billing data.
High Efficiency
The high efficiency case is the existing facility with a programmable thermostat installed.
Hours
Not applicable.
Measure Life
The measure life is 15 years.444
443
444
RISE Engineering.
Environmental Protection Agency (2010). Life Cycle Cost Estimate for Programmable Thermostats. Accessed on 10/12/2011.
November 2011
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Rhode Island TRM
Residential Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
MF SPACE Thermostat
SF SPACE Thermostat
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
1.21
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
The energy realization rate for multi-family installations are from the National Grid impact evaluation of the 2010
EnergyWise Multifamily Gas Program.445 The energy realization rate for single family installations is 100% based
on no evaluations.
Coincidence Factors
Coincidence factors are not used since there are no electric savings counted for this measure.
445
The Cadmus Group (2011). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 2010).
Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
240
Rhode Island TRM
Residential Gas Efficiency Measures
MF Hot Water – EW DHW Measures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: An existing showerhead or aerator with a high flow rate is replaced with a new low
flow showerhead or aerator.
Primary Energy Impact: Natural Gas (Residential Hot Water)
Secondary Energy Impact: None
Non-Energy Impact: Water
Sector: Residential
Market: Retrofit
End Use: Hot Water
Program: EnergyWise
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on program vendor information:
∆MMBtu = ∆MMBtu
Where:
Units
∆MMBtu/Unit
=
=
Total quantity of installed units. Units are defined in Table 33.
Deemed savings per unit installed.
Table 33: Savings for EW DHW Measures
Measure
Faucet Aerator
Low-Flow Showerhead
DHW pipe sleeve or pipewrap
Water Heater Tank Wrap (Small < 50 gallons)
Water Heater Tank Wrap (Large >= 50 gallons)
DHW TurnDown to 125°F
Unit
Each
Each
Linear Feet
Each
Each
Each
∆MMBtu/Unit446
0.944
2.020
0.016
2.187
2.137
0.398
Baseline Efficiency
The baseline efficiency case is an existing shower head or faucet aerator with a high flow.
High Efficiency
High efficiency is a low flow showerhead or faucet aerator.
Hours
Not applicable.
446
RISE Engineering.
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241
Rhode Island TRM
Residential Gas Efficiency Measures
Measure Life
The measure life for all DHW measures is 7 years.447
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Savings448
Benefit Type
Description
Annual Resource
Annual Resource
Residential water savings for low-flow showerheads
Residential water savings for faucet aerators
3,696 gallons/unit
332 gallons/unit
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
MF DHW Measures
SF DHW Measures
EnergyWise
EnergyWise
1.00
1.00
1.00
1.00
1.21
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since all PA programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
The energy realization rate for multi-family installations are from the National Grid impact evaluation of the 2010
EnergyWise Multifamily Gas Program.449 The energy realization rate for single family installations is 100% based
on no evaluations.
Coincidence Factors
There are no electric savings for this measure.
447
National Grid assumption based on regional PA working groups.
Tetra Tech and NMR Group (2011). Massachusetts Special and Cross-Sector Studies Area, Residential and Low-Income NonEnergy Impacts (NEI) Evaluation. Prepared for Massachusetts Program Administrators; Table 2-2.
449
The Cadmus Group (2011). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 2010).
Prepared for National Grid.
448
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
242
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Commercial and Industrial Gas Efficiency Measures
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
243
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
HVAC – Boilers
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of a high efficiency natural gas fired condensing boilers. Highefficiency boilers take advantage of improved design, sealed combustion and condensing flue
gases in a second heat exchanger to achieve improved efficiency. 450
Primary Energy Impact: Natural Gas (C&I Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed high efficiency boiler
Average annual MMBtu savings per unit. See Table 34 for values.
Table 34: Savings for C&I Boilers
Equipment Type
Size Range
<=300 MBH
Condensing Boiler
< 500 MBH
< 1000 MBH
<= 1700 MBH
> 1701 MBH
Efficiency Requirement
>= 90% AFUE
>= 96% AFUE
>= 90% thermal efficiency
>= 90% thermal efficiency
>= 90% thermal efficiency
>= 90% thermal efficiency
∆MMBTU/Unit451
22.1
25.2
42.3
77.1
142.6
249.0
Baseline Efficiency
The baseline efficiency assumes compliance with the efficiency requirements as mandated by Rhode
Island State Building Code. The deemed savings methodology for this measure does not require specific
baseline data, but the baseline information is provided for reference. As described in Chapter 13 of the
Rhode Island State Building Code, energy efficiency must be met via compliance with the International
Energy Conservation Code (IECC) 2009. Table 35 details the specific efficiency requirements by
equipment type and capacity.
450
Only condensing boilers are offered as prescriptive measures. Program incentives for other boiler types are offered through
the custom program.
451
KEMA (2011). Prescriptive Condensing Boiler Impact Evaluation, Project 5 Prescriptive Gas. Prepared for Massachusetts
Energy Efficiency Program Administrators; Table 1-3.
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Table 35: Baseline Efficiency Requirements for Gas Boilers452
Equipment Type
Boiler, Gas-Fired
Subcategory or Rating
Condition
Hot Water
Size Category (Input)
< 300,000 Btu/h
Minimum
Efficiencya
80% AFUE
>= 300,000 Btu/h and <=
2,500,000 Btu/h
Minimum Capacitya
> 2,500,000 Btu/h
Hot Water
a. Minimum ratings as provided for and allowed by the unit's controls
75% Et and 80% Ec
80% Ec
High Efficiency
The high efficiency scenario assumes a gas-fired boiler that exceeds the efficiency levels required by
Rhode Island State Building Code. Actual site efficiencies should be determined on a case-by-case basis.
Hours
Not applicable.
Measure Life
The measure life is 25 years.453
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Condensing Boilers
C&I NC
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in-service rate since programs include verification of equipment installations.
Savings Persistence Factor
Savings persistence is assumed to be 100%.
Realization Rates
Energy realization rate is 100% because deemed savings are based on evaluation results. Demand realization rates
are not applicable since no electric savings are claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
452
Adapted from 2007 Supplement to the 2006 International Energy Conservation Code; Page 15, Table 503.2.3(5).
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table B-2b.
453
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
245
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
HVAC – Boiler Reset Controls
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Boiler Reset Controls are devices that automatically control boiler water
temperature based on outdoor or return water temperature using a software program. Installed
measure may be one stage or multi-stage.
Primary Energy Impact: Natural Gas (C&I Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: HVAC
Program: Large C&I Retrofit, Small C&I Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed boiler reset control
Average annual MMBtu savings per unit: 35.5 MMBtu454
Baseline Efficiency
The baseline efficiency case is a boiler without reset controls.
High Efficiency
The high efficiency case is a boiler with reset controls.
Hours
Not applicable.
Measure Life
The measure life is 15 years.455
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
454
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Measure C-SH-25. The GDS study assumes 710.46 MMBtu base usage with 5% savings factor.
455
ACEEE (2006). Emerging Technologies Report: Advanced Boiler Controls. Prepared for ACEEE; Page 2.
November 2011
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Boiler Reset Controls
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
247
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
HVAC – Programmable Thermostats
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of programmable thermostats with the ability to adjust heating or airconditioning operating times according to a pre-set schedule to meet occupancy needs and
minimize redundant HVAC operation.
Primary Energy Impact: Natural Gas (C&I Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: HVAC
Program: Large C&I Retrofit, C&I Direct Install
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
= Installed programmable thermostat
= Average annual MMBtu reduction per unit: 7.7 MMBtu456
Baseline Efficiency
The baseline efficiency case is an HVAC system using natural gas to provide space heating without a
programmable thermostat.
High Efficiency
The high efficiency case is an HVAC system using natural gas to provide space heating with a
programmable thermostat installed.
Hours
Not applicable.
Measure Life
The measure life is 15 years.457
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
456
RLW Analytics (2007). Validating the Impacts of Programmable Thermostats. Prepared for GasNetworks; Page 2.
Conversion factor for CCF to therms is 1.024.
457
Environmental Protection Agency (2010). Life Cycle Cost Estimate for Programmable Thermostats. Accessed on 10/12/2011.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
248
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Programmable Thermostats
C&I Retrofit
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
249
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
HVAC – Furnaces
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of a high efficiency natural gas warm air furnace with an
electronically commutated motor (ECM) for the fan. High efficiency furnaces are better at
converting fuel into direct heat and better insulated to reduce heat loss. ECM fan motors
significantly reduce fan motor electric consumption as compared to both shaped-pole and
permanent split capacitor motors.
Primary Energy Impact: Natural Gas (C&I Heat)
Secondary Energy Impact: Electric
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed high efficiency warm air furnace
Average annual MMBtu savings per unit. See Table 36.
Table 36: Savings for C&I Furnaces
Equipment Type
Furnace (Forced Hot Air) w/ECM
Efficiency Range
AFUE >= 95%
AFUE >= 96%
∆MMBtu458
18.0
20.7
Baseline Efficiency
The baseline efficiency assumes compliance with the efficiency requirements as mandated by Rhode
Island State Building Code. The deemed savings methodology for this measure does not require specific
baseline data, but the baseline information is provided here for reference.
As described in Chapter 13 of the Rhode Island State Building Code, energy efficiency must be met via
compliance with the International Energy Conservation Code (IECC) 2009. Table 37 details the specific
efficiency requirements by equipment type and capacity.
Table 37: Baseline Efficiency Requirements for C&I Gas Furnaces459
458
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks. Value adjusted based on results of: Nexus Market Research and The Cadmus Group (2010). HEHE
Process and Impact Evaluation – Volume 1 Integrated Report of Findings. Prepared for GasNetworks; Table ES-1.
459
Adapted from 2006 International Energy Conservation Code; Page 36, Table 503.2.3(4).
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
250
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Subcategory or Rating
Size Category (Input)
Condition
Minimum Efficiency
< 225,000 Btu/h
78% AFUE or 80% Etb
a
>= 225,000 Btu/h
Maximum capacity
80% Etc
a
Warm air duct furnaces, gas fired
All capacities
Maximum capacity
80% Ec
a. Minimum and maximum ratings as provided for and allowed by the unit’s controls.
b. Combination units not covered by the National Appliance Energy Conservation Act of 1987 (NAECA) (3-phase
power or cooling capacity greater than or equal to 65,000 Btu/h [19 kW]) shall comply with either rating.
c. Units must also include an Intermittent Ignition Device (IID), have jackets not exceeding 0.75 percent of the input
rating, and have either power venting or a flue damper. A vent damper is an acceptable alternative to a flue damper
for those furnaces where combustion air is drawn from the conditioned space.
Equipment Type
Warm air furnaces, gas fired
High Efficiency
The high efficiency scenario assumes a gas-fired furnace with AFUE >= 92%.
Hours
Not applicable.
Measure Life
The measure life is 18 years.460
Secondary Energy Impacts
High efficiency furnaces equipped with ECM fan motors also save electricity from reduced fan energy
requirements. The reduction of electric use is 168 kWh and 0.124 kW461.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Furnace w/ ECM
Program
C&I NC
ISR
1.00
SPF
1.00
RRE
1.00
RRSP
1.00
RRWP
1.00
CFSP
0.25
CFWP
0.16
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Coincidence factors from preliminary results of Massachusetts BFM study. 462
460
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table B-2b.
461
The Cadmus Group (2011). MEMO: BFM Initial Results. Prepared for Gail Azulay, NSTAR and Bob Wirtshafter, EEAC.
462
The Cadmus Group (2011). MEMO: BFM Initial Results. Prepared for Gail Azulay, NSTAR and Bob Wirtshafter, EEAC.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
251
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
HVAC – Infrared Heater
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of a gas-fired low intensity infrared heating system in place of unit
heater, furnace, or other standard efficiency equipment. Infrared heating uses radiant heat as
opposed to warm air to heat buildings. In commercial environments with high air exchange rates,
heat loss is minimal because the space’s heat comes from surfaces rather than air.
Primary Energy Impact: Natural Gas (C&I Heat)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed infrared heater
Average annual MMBtu savings per unit: 74.4 MMBtu463
Baseline Efficiency
The baseline efficiency case is a standard efficiency gas-fired unit heater with combustion efficiency of
80%.
High Efficiency
The high efficiency case is a gas-fired low-intensity infrared heating unit.
Hours
Not applicable.
Measure Life
The measure life is 17 years.464
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
463
The savings are based on modeled data form 62 low-intensity infrared heaters installed through the Columbia Gas of MA
custom commercial and industrial energy efficiency program. See “Infrared Samples - Bay State Gas” for project data.
464
Nexant (2006). DSM Market Characterization Report. Prepared for Questar Gas.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
252
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP RRWP CFSP CFWP
Low Intensity Infrared Heater
LCNC
1.00 1.00 1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
253
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
HVAC – Combo Water Heater/Boiler
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: This measure promotes the installation of a combined high-efficiency boiler and
water heating unit. Combined boiler and water heating systems are more efficient than separate
systems because they eliminate the standby heat losses of an additional tank.
Primary Energy Impact: Natural Gas (C&I All)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: HVAC
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed high efficiency boiler/water heater combo units
Average annual MMBtu savings per unit. See Table 38 for values.
Table 38: Savings for C&I Combo Water Heater/Boiler
Equipment Type
Combo Water Heater/Condensing Boiler
Efficiency Range
EF >= 0.90, AFUE >= 90%
∆MMBtu/Unit465
24.6
Baseline Efficiency
The baseline efficiency case is an 80%AFUE boiler with a 0.594 EF water heater.
High Efficiency
The high efficiency case is a condensing, integrated water heater/boiler with an AFUE >= 90%.
Hours
Not applicable.
Measure Life
The measure life is 20 years.466
465
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks.
466
ASHRAE Applications Handbook (2003); Page 36.3, assumes combined boiler and water heating systems have a measure life
similar to a typical boiler.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
254
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR SPF RRE RRSP
Combo Water Heater/Condensing Boiler
C&I NC
1.00 1.00
1.00
n/a
RRWP CFSP
n/a
n/a
CFWP
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
255
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
HVAC/Hot Water – Pipe Insulation
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of insulation on hot water pipes.
Primary Energy Impact: Natural Gas (C&I Hot Water)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Hot Water
Program: Large C&I Retrofit, C&I Direct Install
Algorithms for Calculating Primary Energy Impact
∆MMBtu = LF × SAVE
Where:
LF
SAVE
=
=
Linear feet of installed insulation
Average energy savings per linear foot of insulation. See Table 39.
Table 39: Savings for Pipe Insulation
Equipment Type
1.5” H20
1.5” Steam
2.0” H20
2.0” Steam
∆MMBTU/LF 467
0.207
0.207
3.61
3.71
Baseline Efficiency
The baseline efficiency case is an uninsulated pipe.
High Efficiency
The high efficiency case is an insulated pipe .
Hours
Not applicable.
Measure Life
The measure life is 15 years.468
467
Based on an analysis conducted by Summit Blue, Inc. See “SB GasNetworks Calculations for Combined HVAC and
DHW.xlsx” for source calculations.
468
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table B-2b.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
256
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Pipe Insulation
Pipe Insulation
Large C&I Retrofit
C&I Direct Install
1.00
1.00
1.00
1.00
1.00
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
257
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Hot Water – Water Heaters
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of a high-efficiency indirect or tankless water heater with and
Energy Factor of at least 0.82. Indirect water heaters use a storage tank that is heated by the main
boiler. The energy stored by the water tank allows the boiler to turn off and on less often, saving
considerable energy. Tankless water heaters circulate water through a heat exchanger to be
heated for immediate use, eliminating the standby heat loss associated with a storage tank.
Primary Energy Impact: Natural Gas (C&I Hot Water)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: Hot Water
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed high efficiency indirect water heater
Average annual MMBtu savings per unit. See
Table 40 for values.
Table 40: Savings for C&I Water Heaters
Equipment Type
Condensing Stand-Alone Water Heater (75-300 MBH)
Free-Standing Water Heater
Indirect Water Heater
Tankless Water Heater
Tankless Water Heater
Efficiency range
TE >= 0.95
EF >= 0.67
EF >= 0.82, CAE >= 85%
EF >= 0.82
EF >= 0.95
∆MMBtu469
25.0
3.0
30.4
7.1
9.6
Baseline Efficiency
The baseline efficiency case assumes compliance with the efficiency requirements as mandated by Rhode
Island State Building Code. For condensing stand-alone water heaters, the baseline is a stand-alone tank
water heater with a thermal efficiency of 80%.470 For indirect and tankless water heaters, the baseline is a
code compliant gas-fired storage water heater with an Energy Factor of 0.59.
469
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table B-2b.
470
ASHRAE Standard 90.1-2007; Table 7.8
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
258
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
High Efficiency
The high efficiency case is a water heater that exceeds the efficiency of the comparable baseline unit.
High efficiency requirements for each type of equipment are described in the program rebate forms and in
the table above.
Hours
Not applicable.
Measure Life
The measure lives for water heater vary by type as listed in the table below.
Table 41: Measure Lives for Residential Water Heaters
Equipment Type
Condensing Stand-Alone Water Heater
Free-Standing Water Heater
Indirect Water Heater
Tankless Water Heater
Measure Life (years) 471
15
13
15
20
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Condensing Stand-Alone Water Heater
Free-Standing Water Heater
Indirect Water Heater
Tankless Water Heater
Program
C&I NC
C&I NC
C&I NC
C&I NC
ISR
1.00
1.00
1.00
1.00
SPF
1.00
1.00
1.00
1.00
RRE
1.00
1.00
1.00
1.00
RRSP
n/a
n/a
n/a
n/a
RRWP
n/a
n/a
n/a
n/a
CFSP
n/a
n/a
n/a
n/a
CFWP
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
471
GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency Potential in Massachusetts.
Prepared for GasNetworks; Table B-2b.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
259
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Hot Water – Pre-Rinse Spray Valve
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Retrofitting existing standard spray nozzles in locations where service water is
supplied by natural gas fired hot water heater with new low flow pre-rinse spray nozzles with an
average flow rate of 1.6 GPM.
Primary Energy Impact: Natural Gas (C&I Hot Water)
Secondary Energy Impact: None
Non-Energy Impact: C&I Water, C&I Sewer
Sector: Commercial, Industrial
Market: Retrofit
End Use: Hot Water
Program: Large C&I Retrofit, C&I Small Business Direct Install
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed pre-rinse spray valve.
Average annual MMBtu savings per unit: 33.6 472
Baseline Efficiency
The baseline efficiency case is a standard efficiency spray valve.
High Efficiency
The high efficiency case is a low flow pre-rinse spray valve with an average flow rate of 1.6 GPM.
Hours
Not applicable.
Measure Life
The measure life is 5 years.473
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
472
SBW Consulting (2004). EM&V Report for the CUWCC Pre-Rinse Spray Head Distribution Program. Prepared for the
California Urban Water Conservation Council; Page 20. Savings of 0.92 therms per day * 365 days per year = 335.8 therms.
473
Veritec Consulting (2005). Region of Waterloo Pre-Rinse Spray Valve Pilot Study, Final Report. Prepared for Region of
Waterloo; Page 8.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
260
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Non-Energy Impacts
Savings474
Benefit Type
Description
C&I Water
C&I Sewer
C&I water savings
C&I sewer water savings
62,305 gallons/year
62,305 gallons/year
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Pre-Rinse Spray Valve
Pre-Rinse Spray Valve
Large C&I Retrofit
Small C&I Retrofit
1.00
1.00
1.00
1.00
1.00
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
474
SBW Consulting (2004). EM&V Report for the CUWCC Pre-Rinse Spray Head Distribution Program. Prepared for the
California Urban Water Conservation Council; Page 18. Savings based on assumptions of 2.24 GPM average flow rate reduction
and 1.27 hours per day average usage.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
261
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Hot Water – Steam Traps
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Repair or replace malfunctioning steam traps.
Primary Energy Impact: Natural Gas (C&I Gas All)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Retrofit
End Use: Hot Water
Program: Large C&I Retrofit
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Repaired/replaced steam trap
Average annual MMBtu savings per unit: 25.7 MMBtu475
Baseline Efficiency
The baseline efficiency case is a failed steam trap.
High Efficiency
The high efficiency case is a repaired or replaced steam trap.
Hours
Not applicable.
Measure Life
The measure life is 3 years.476
475
National Grid assumption based on regional PA working groups. Assumptions based on historical steam trap surveys. Steam
losses in lbs/hr are found using “Boiler Efficiency Institute (1987). Steam Efficiency Improvement; Page 34, Table 4.1 under
Steam Leak Rate Through Holes. Average loss rate for all trap sizes 1/32” to 1/4” for low steam pressures (5 psig and 10 psig)
and high pressures (50 psig and 100 psig). Assume trap failure effective for 540 EFLH per year. Determine to equivalent therms
per year and factor for frequency encountered = [80% * (78.50 + 111.46)/2] + [20% * (1,108.04 + 1,982.18)/2] = 385.01
BTU/trap-year. Assume that 50% of traps fail in the open position and savings is grossed up by the efficiency of the boiler
supplying the steam of (inverse of 75%). Net savings is 257 therms per trap.
476
National Grid assumption based on regional PA working groups. Most sources suggest a measure life or equipment life of five
years. Regional PAs have traditionally taken equipment life and applied a factor to account for measure persistence when
determining measure life.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
262
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Steam Traps
Large C&I Retrofit
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
263
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Hot Water – Low-Flow Shower Heads
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of a low flow showerhead with a flow rate of 1.5 GPM or less in a
commercial setting with service water heated by natural gas.
Primary Energy Impact: Natural Gas
Secondary Energy Impact: None
Non-Energy Impact: C&I Water, C&I Sewer
Sector: Commercial
Market: Retrofit
End Use: Hot water
Program: C&I Direct Install
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed low flow shower head
Average annual MMBtu savings per unit: 5.2 MMBtu477
Baseline Efficiency
The baseline efficiency case is a 2.5 GPM showerhead.
High Efficiency
The high efficiency case is a 1.5 GPM showerhead.
Hours
The savings estimates for this measure are determined empirically in terms of units installed and so the
equivalent heating full load hours are not directly used, however, the calculator used to determine the
deemed savings uses a default operation of 20 minutes a day, 365 days a year.
Measure Life
The measure life is 10 years.478
477
Federal Energy Management Program (2010). Energy Cost Calculator for Faucets and Showerheads. Accessed on
10/12/2011. Also supported by: GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency
Potential in Massachusetts. Prepared for GasNetworks; Table B-2b, Measure C-WH-15.
478
Federal Energy Management Program (2010). Energy Cost Calculator for Faucets and Showerheads. Accessed on
10/12/2011.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
264
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Savings479
Benefit Type
Description
C&I Water
C&I Sewer
C&I water savings
C&I sewer water savings
7,300 Gallons/Unit
7,300 Gallons/Unit
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Low-Flow Shower Heads
C&I Direct Install
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
479
Federal Energy Management Program (2010). Energy Cost Calculator for Faucets and Showerheads. Accessed on
10/12/2011.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
265
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Hot Water – Faucet Aerator
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of a faucet aerator with a flow rate of 1.5 GPM or less on an existing
faucet with high flow in a commercial setting with service water heated by natural gas.
Primary Energy Impact: Natural Gas
Secondary Energy Impact: None
Non-Energy Impact: C&I Water, C&I Sewer
Sector: Commercial
Market: Retrofit
End Use: Hot water
Program: C&I Direct Install
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed faucet aerator
Average annual MMBtu savings per unit: 1.7 MMBtu480
Baseline Efficiency
The baseline efficiency case is a 2.2 GPM faucet.
High Efficiency
The high efficiency case is a faucet with 1.5 GPM or less aerator installed.
Hours
The savings estimates for this measure are determined empirically in terms of units installed and so the
equivalent heating full load hours are not directly used, however, the calculator used to determine the
deemed savings uses a default operation of 30 minutes a day, 260 days a year.
Measure Life
The measure life is 10 years.481
480
Federal Energy Management Program (2010). Energy Cost Calculator for Faucets and Showerheads. Accessed on
10/12/2011. Also supported by: GDS Associates, Inc. and Summit Blue Consulting (2009). Natural Gas Energy Efficiency
Potential in Massachusetts. Prepared for GasNetworks; Table B-2b, Measure C-WH-16.
481
Federal Energy Management Program (2010). Energy Cost Calculator for Faucets and Showerheads. Accessed on
10/12/2011.
November 2011
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Savings482
Benefit Type
Description
C&I Water
C&I Sewer
C&I water savings
C&I sewer water savings
5,460 Gallons/Unit
5,460 Gallons/Unit
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Faucet Aerator
C&I Direct Install
1.00
1.00
1.00
1.00
1.00
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
482
Federal Energy Management Program (2010). Energy Cost Calculator for Faucets and Showerheads. Accessed on
10/12/2011.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
267
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Food Service – Commercial Gas-Fired Ovens
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of high efficiency gas-fired ovens.
Primary Energy Impact: Natural Gas (C&I All)
Secondary Energy Impact: None
Non-Energy Impact: Water
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: Food Service
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed high efficiency gas oven
Average annual MMBtu savings per unit. See Table 42 for values.
Table 42: Savings for Commercial Ovens
Equipment Type
Gas-Fired Convection Oven
Gas-Fired Combination Oven
Gas-Fired Conveyer Oven
Gas-Fired Rack Oven
Baseline Efficiency
30%
35% Heavy Load
20% Heavy Load
30%
High Efficiency
>= 44%
>= 44%
>= 44%
>= 50%
∆MMBtu
24.8 483
110.3 484
84.5 485
211.3 486
Baseline Efficiency
The baseline efficiency case is a standard oven that meets the baseline cooking energy efficiency
requirements shown in Table 42.
High Efficiency
The high efficiency case is an oven that meets or exceeds the high efficiency ratings shown in Table 42.
Hours
Not applicable.
483
Consortium for Energy Efficiency (2008). Technology Opportunity Assessment: Convection Ovens; Page 5.
Food Service Technology Center (2011). Gas Combination Oven Life-Cycle Cost Calculation. Accessed on 10/12/2011.
485
Food Service Technology Center (2011). Gas Conveyor Oven Life-Cycle Cost Calculation. Accessed on 10/12/2011.
486
Food Service Technology Center (2011). Gas Conveyor Oven Life-Cycle Cost Calculation. Accessed on 10/12/2011.
484
November 2011
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Measure Life
The measure life is 12 years for all commercial gas-fired ovens.487
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
The efficient combination oven saves 43,800 gallons of water per year.488
Impact Factors for Calculating Adjusted Gross Savings
Measure
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Gas-Fired Convection Oven
Gas-Fired Combination Oven
Gas-Fired Conveyer Oven
Gas-Fired Rack Oven
C&I NC
C&I NC
C&I NC
C&I NC
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
487
488
See references noted in Table 42.
Food Service Technology Center (2011). Gas Combination Oven Life-Cycle Cost Calculation. Accessed on 10/12/2011.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Food Service – Commercial Griddle
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: Installation of a high efficiency gas-fired griddle.
Primary Energy Impact: Natural Gas (C&I All)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: Food
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed high efficiency gas griddle.
Average annual MMBtu savings per unit: 18.5 MMBtu489
Baseline Efficiency
The baseline efficiency case is a standard efficiency (30% efficient) gas griddle.
High Efficiency
The high efficiency case is a gas griddle with an efficiency of 38%.
Hours
Not applicable.
Measure Life
The measure life is 12 years.490
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
489
490
Food Service Technology Center (2011). Gas Griddle Life-Cycle Cost Calculation. Accessed on 10/12/2011.
Ibid.
November 2011
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ALL RIGHTS RESERVED
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Gas-Fired Griddle
C&I NC
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
November 2011
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ALL RIGHTS RESERVED
271
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Food Service – Commercial Fryer
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of a natural-gas fired fryer that is either ENERGY STAR® rated or
has a heavy-load cooking efficiency of at least 50%. Qualified fryers use advanced burner and
heat exchanger designs to use fuel more efficiently, as well as increased insulation to reduce
standby heat loss.
Primary Energy Impact: Natural Gas (C&I All)
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: Food
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on the following algorithm and assumptions:
 Load
  Load
 365 
∆MMBtu = 
+ BBASE × IDLEBASE + C BASE  − 
+ BEE × IDLEEE + C EE 

η
η
1
,
000
,
000


BASE
EE






Where:
Unit
∆MMBtu
Load
ηBASE
BBASE
IDLEBASE
CBASE
ηEE
BEE
IDLEEE
CEE
365
1,000,000
=
=
=
=
=
=
=
=
=
=
=
=
=
Installed high efficiency gas commercial fryer
gross annual average MMBtu savings per unit: 58.6491 (calculated)
Daily cooking load (Btu/day). Default = 85,500 Btu.
Baseline equipment heavy-load cooking efficiency. Default = 35%.
Baseline equipment daily fryer idle time (hours). Default = 13.25 hrs.
Baseline equipment idle energy rate (Btu/h). Default = 14,000 Btu/h.
Baseline equipment daily preheat energy (Btu). Default = 16,000 Btu.
Efficient equipment heavy-load cooking efficiency: Assumed 55%.
Efficiency equipment daily fryer idle time (hours). Default 13.44 hrs.
Efficient equipment idle energy rate (Btu/h): Assumed 8,500 Btu/h.
Efficient equipment daily preheat energy (Btu). Default = 15,500 Btu.
Days per year.
Btu per MMBtu.
Baseline Efficiency
The baseline efficiency case is a typical low-efficiency gas-fired fryer with 35% cooking efficiency,
16,000 Btu preheat energy, 14,000 Btu/h Idle Energy Rate, 60 lbs/h production capacity.
491
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Gas Fryer; Default Energy
Star values used for calculations except: average cooking energy efficiency = 55% and ideal energy rate = 8,500 Btu/h based on
average efficiencies of all fryers that meet the ENERGY STAR specifications.
November 2011
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
High Efficiency
The high efficiency case is a high efficiency gas-fired fryer with a 55% cooking efficiency, and Idle
Energy Rate are site-specific and can 15,500 Btu preheat energy, 8,500 Btu/h Idle Energy Rate, and 65
lbs/hr production capacity. To simplify the savings algorithm, typical values for food load (150 lbs/day)
and preheat energy (15,500 Btu) are assumed.
Hours
The fryer is assumed to operate 16 hours per day, 365 days per year492.
Measure Life
The measure life is 12 years.493
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
There are no non-energy impacts for this measure.
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Gas-Fired Fryer
C&I NC
1.00
1.00
1.00
n/a
n/a
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
492
493
Environmental Protection Agency (2009). Life Cycle Cost Estimate for ENERGY STAR Qualified Gas Fryer.
Ibid.
November 2011
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ALL RIGHTS RESERVED
273
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Food Service – Commercial Steamer
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The installation of an ENERGY STAR® rated natural-gas fired steamer, either
connectionless or steam-generator design, with heavy-load cooking efficiency of at least 38%.
Qualified steamers reduce heat loss due to better insulation, improved heat exchange, and more
efficient steam delivery systems.
Primary Energy Impact: Natural Gas (C&I All)
Secondary Energy Impact: None
Non-Energy Impact: Water, Sewer
Sector: Commercial & Industrial
Market: Lost Opportunity
End Use: Food
Program: Large Commercial New Construction
Algorithms for Calculating Primary Energy Impact
Unit savings are deemed based on study results:
∆MMBtu = ∆MMBtu
Where:
Unit
∆MMBtu
=
=
Installed high efficiency gas-fired steamer
Average annual MMBTU savings per steamer unit: 106.6 MMBtu494
Baseline Efficiency
The baseline efficiency case is a typical boiler-based steamer with the following operating parameters:
cooking energy efficiency = 18%, production capacity per pan = 23.3 lbs/hr, preheat energy rate = 72,000
Btu/hr, idle energy rate = 18,000 Btu/h, and average water use = 40 gallons/hr.
High Efficiency
The high efficiency case is an ENERGY STAR® qualified gas-fired steamer with the following operating
parameters: cooking energy efficiency = 38%, production capacity per pan = 20 lbs/hr, preheat energy
rate = 36,000 Btu/hr, idle energy rate = 12,500 Btu/h, and average water use = 3 gallons/hr.
Hours
The deemed savings assumes 4,380 annual operating hours (12 hours a day * 365 days/year). 495
Measure Life
The measure life is 12 years.496
494
Environmental Protection Agency (2011). Savings Calculator for ENERGY STAR Qualified Commercial Kitchen Equipment:
Steam Cooker Calcs. Accessed on 10/12/2011.
495
Ibid.
November 2011
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ALL RIGHTS RESERVED
274
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Secondary Energy Impacts
There are no secondary energy impacts for this measure.
Non-Energy Impacts
Benefit Type
Description
C&I Water
C&I Wastewater
C&I Water Savings
C&I Wastewater Savings
Savings497
162,060 gallons/year
162,060 gallons/year
Impact Factors for Calculating Adjusted Gross Savings
Measure Name
Program
ISR
SPF
RRE
RRSP
RRWP
CFSP
CFWP
Gas-Fired Steamer
C&I NC
1.00
1.00
1.00
1.00
1.00
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
All PAs use 100% energy realization rate. The summer and winter peak realization rates are not applicable for this
measure since there are no electric savings claimed.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
496
497
Ibid.
Ibid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
275
Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Custom Measures
Version Date and Revision History
06/30/2011
Draft Date:
Effective Date: 1/1/2012
TBD
End Date:
Measure Overview
Description: The Custom project track is offered for energy efficiency projects involving
complex site-specific applications that require detailed engineering analysis and/or projects which
do not qualify for incentives under any of the prescriptive rebate offering. Projects offered
through the custom approach must pass a cost-effectiveness test based on project-specific costs
and savings.
Primary Energy Impact: Natural Gas
Secondary Energy Impact: None
Non-Energy Impact: None
Sector: Commercial & Industrial
Market: Lost Opportunity, Retrofit
End Use: All
Program: Large Commercial New Construction, Large C&I Retrofit
Algorithms for Calculating Primary Energy Impact
Gross energy savings estimates for custom projects are calculated using engineering analysis and projectspecific details. Custom analyses typically include a weather dependent load bin analysis, whole building
energy model simulation, or other engineering analysis and include estimates of savings, costs, and an
evaluation of the project’s cost-effectiveness.
Baseline Efficiency
For Lost Opportunity projects, the baseline efficiency case assumes compliance with the efficiency
requirements as mandated by Rhode Island State Building Code or industry accepted standard practice.
For retrofit projects, the baseline efficiency case is the same as the existing, or pre-retrofit, case for the
facility.
High Efficiency
The high efficiency scenario is specific to the custom project and may include one or more energy
efficiency measures. Energy savings calculations are based on projected changes in equipment
efficiencies and operating characteristics and are determined on a case-by-case basis. The project must be
proven cost-effective in order to qualify for energy efficiency incentives.
Hours
All hours for custom savings analyses should be determined on a case-by-case basis.
Measure Life
For both lost-opportunity and retrofit custom applications, the measure life is determined on a case-bycase basis.
November 2011
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Rhode Island TRM
Commercial and Industrial Gas Efficiency Measures
Secondary Energy Impacts
No secondary energy impacts are currently claimed for custom projects. If counted, these would be
custom-calculated based on project-specific detail.
Non-Energy Impacts
No non-energy impacts are currently claimed for custom projects. If counted, these would be customcalculated based on project-specific detail.
Impact Factors for Calculating Adjusted Gross Savings
Program
LCNC
LCR
Measure
Custom Measures
Custom Measures
ISR
1.00
1.00
SPF
1.00
1.00
RRE
0.70
0.70
RRSP
n/a
n/a
RRWP
n/a
n/a
CFSP
n/a
n/a
CFWP
n/a
n/a
In-Service Rates
All installations have 100% in service rate since programs include verification of equipment installations.
Savings Persistence Factor
All PAs use 100% savings persistence factor.
Realization Rates
Realization rates are from a 2011 impact evaluation of C&I custom gas installations498.
Coincidence Factors
Not applicable for this measure since no electric savings are claimed.
498
KEMA (2011). Impact Evaluation of C&I Custom Gas Installations. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
277
Rhode Island TRM
Appendices
Appendices
November 2011
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ALL RIGHTS RESERVED
279
Rhode Island TRM
Appendices
Appendix A: Common Lookup Tables
Table 43: Suggested C&I Lighting Hours by Building Type499
Building Type
Assembly
Automobile
Big Box
Community College
Dormitory
Fast Food
Full Service Restaurant
Grocery
Heavy Industrial
Hospital
Hotel
Large Refrigerated Space
Large Office
Light Industrial
Motel
Multi Story Retail
Multifamily high-rise
Multifamily low-rise
Other
Religious
K-12 Schools
Small Office
Small Retail
University
Warehouse
Annual Operating Hours
2857 (one shift)
4056 (retail)
4057 (retail)
3255
3,056
5110
5110
6074
4,057
8036
8583
2602 (warehouse)
3610
4,730 (two shift)
8583
4089
7665 (Common Area)
7665 (Common Area)
3951
1955
2596
3610
4089
3255
3759
Table 44: Lighting Power Densities Using the Building Area Method (LPDBASE,i)500
Building Area Type
Automotive Facility
Convention Center
Court House
Dining: Bar Lounge/Leisure
Dining: Cafeteria/Fast Food
Dining: Family
Dormitory
Exercise Center
Gymnasium
Lighting Power Density (Watt/ft2)
0.9
1.2
1.2
1.3
1.4
1.6
1.0
1.0
1.1
499
Suggested lighting hours by building are provided as guidance and for use when site-specific lighting hours are unavailable.
Hours by building type were developed by National Grid energy efficiency program staff based on experience and the New York
Standard Approach for Estimating Energy Savings from Energy Efficiency Programs (2010).
500
IECC 2009 Lighting Provisions, Section 505 Electrical Power and Lighting Systems, Table 505.5.2 Interior Lighting Power
Allowances, Lighting provisions pgs.5-6.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
280
Rhode Island TRM
Building Area Type
Healthcare-Clinic
Hospital
Hotel
Library
Manufacturing Facility
Motel
Motion Picture Theatre
Multi-Family
Museum
Office
Parking Garage
Penitentiary
Performing Arts Theatre
Police/Fire Station
Post Office
Religious Building
Retail
School/University
Sports Arena
Town Hall
Transportation
Warehouse
Workshop
November 2011
Appendices
Lighting Power Density (Watt/ft2)
1.0
1.2
1.0
1.3
1.3
1.0
1.2
0.7
1.1
1.0
0.3
1.0
1.6
1.0
1.1
1.3
1.5
1.2
1.1
1.1
1.0
0.8
1.4
© 2011 National Grid
ALL RIGHTS RESERVED
281
Rhode Island TRM
Appendices
Table 45: Lighting Power Densities Using the Space-by-Space Method (LPDBASE,i)501
Common Space Types
Office – Enclosed
Office - Open Plan
Conference/Meeting/Multipurpose
Classroom/Lecture/Training
For Penitentiary
Lobby
For Hotel
For Performing Arts Theater
For Motion Picture Theater
Audience/Seating Area
For Gymnasium
For Exercise Center
For Convention Center
For Penitentiary
For Religious Buildings
For Sports Arena
For Performing Arts Theater
For Motion Picture Theater
For Transportation
Atrium - First Three Floors
Atrium - Each Additional Floor
Lounge/Recreation
For Hospital
Dining Area
For Penitentiary
For Hotel
For Motel
For Bar Lounge/Leisure Dining
For Family Dining
Food Preparation
Laboratory
Restrooms
Dressing/Locker/Fitting Room
Corridor/Transition
For Hospitals
For Manufacturing Facilities
Stairs – Active
Active Storage
For Hospital
Inactive Storage
For Museum
Electrical/Mechanical
Building Specific Space Types
501
Lighting Power Density (Watt/ft2)
1.1
1.1
1.3
1.4
1.3
1.3
1.1
3.3
1.1
0.9
0.4
0.3
0.7
0.7
1.7
0.4
2.6
1.2
0.5
0.6
0.2
1.2
0.8
0.9
1.3
1.3
1.2
1.4
2.1
1.2
1.4
0.9
0.6
0.5
1.0
0.5
0.6
0.8
0.9
0.3
0.8
1.5
Lighting Power Density (Watt/ft2)
ASHRAE 90.1-2007 Energy Standard for Building Except Low-Rise Residential Buildings, Table 9.6.1, pp.63-64.
November 2011
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Rhode Island TRM
Appendices
Common Space Types
Gymnasium/Exercise Center
Exercise Area
Playing Area
Court House/Police Station/Penitentiary
Courtroom
Confinement Cells
Judges Chambers
Fire Stations
Engine Room
Sleeping Quarters
Post Office – Sorting Area
Convention Center - Exhibit Space
Library
Card File and Cataloging
Stacks
Reading Area
Hospital
Emergency
Recovery
Nurses' Station
Exam/Treatment
Pharmacy
Patient Room
Operating Room
Nursery
Medical Supply
Physical Therapy
Radiology
Laundry-Washing
Automobile - Service/Repair
Manufacturing
Low Bay (< 25 ft. Floor to Ceiling Height)
High Bay (≥ 25 ft. Floor to Ceiling Height)
Detailed Manufacturing
Equipment Room
Control Room
Hotel/Motel Guest Rooms
Dormitory - Living Quarters
Museum
General Exhibition
Restoration
Bank/Office - Banking Activity Areas
Workshop
Sales Area [for accent lighting, see Section 9.6.2(b)]
Religious Buildings
Worship Pulpit, Choir
Fellowship Hall
November 2011
Lighting Power Density (Watt/ft2)
© 2011 National Grid
ALL RIGHTS RESERVED
0.9
1.4
1.9
0.9
1.3
0.8
0.3
1.2
1.3
1.1
1.7
1.2
2.7
0.8
1.0
1.5
1.2
0.7
2.2
0.6
1.4
0.9
0.4
0.6
0.7
1.2
1.7
2.1
1.2
0.5
1.1
1.1
1.0
1.7
1.5
1.9
1.7
2.4
0.9
283
Rhode Island TRM
Appendices
Common Space Types
Retail
Sales Area [for accent lighting, see Section 9.6.3(c)]
Mall Concourse
Sports Arena
Ring Sports Arena
Court Sports Arena
Indoor Playing Field Area
Warehouse
Fine Material Storage
Medium/Bulky Material Storage
Parking Garage - Garage Area
Transportation
Airport – Concourse
Airport/Train/Bus - Baggage Area
Terminal - Ticket Counter
Lighting Power Density (Watt/ft2)
1.7
1.7
2.7
2.3
1.4
1.4
0.9
0.2
0.6
1.0
1.5
Table 46: C&I Electric Measure Non-Energy Impacts502
End-Use
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
502
Measure Type
LED Traffic Lights
LED Exit Sign
CFL Fixtures
Fluorescent Lighting (T8 Lamp/Ballast)
Fluorescent Lighting (Super T8 Lamp/Ballast)
T8 Lamp/Ballast + Reflectors
Occupancy Sensors
Daylight Dimming
PA
All
All
All
All
All
All
All
All
Impact ($/Unit)
Retrofit Lost Opportunity
$29.37
$30.02
$33.65
$0.00
$18.67
$17.93
$0.41
$0.00
$0.06
$0.00
$0.91
$0.00
$6.69
$6.69
$0.00
$0.00
Unit
Fixture
Exit Sign
Fixture
Fixture
Fixture
Fixture
∆kW
∆kW
Optimal Energy, Inc. (2008). MEMO: Non-Electric Benefits Analysis Update. Prepared for Dave Weber, NSTAR.
November 2011
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284
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Appendices
Appendix B: Net to Gross Impact Factors
Residential Electric Efficiency Programs
The Net-to-Gross adjustments for measures implemented through National Grid’s Residential
electric energy efficiency programs may be determined at the measure or program level.
Table 47: NTG Factors for Residential Electric Efficiency Programs
Residential Electric Measures
Measure
FR
SOP
Residential New Construction & Major Renovation
Dishwashers
0%
0%
ES Homes - Cooling
0%
0%
ES Homes - Heating
0%
0%
ES Homes - Water Heating
0%
0%
Indoor Fixture
8%
4%
LED Fixture
0%
0%
Refrigerators
3%
0%
Screw-in Bulbs
6%
10%
Residential Cooling and Heating Equipment
Brushless Furnace Fan Motor
15%
0%
CoolSmart AC (SEER >= 15 / EER >= 12.5)
15%
0%
CoolSmart AC (SEER >= 16 / EER >= 13)
15%
0%
CoolSmart AC (SEER 14.5 / EER 12)
15%
0%
CoolSmart AC Digital Check-up/Tune-up
15%
0%
CoolSmart AC QIV ES
15%
0%
CoolSmart HP (SEER >= 15)
15%
0%
CoolSmart HP MS (SEER 14.5 / EER 12)
15%
0%
CoolSmart HP QIV ES
15%
0%
CoolSmart Warm Air Furnace ECM
15%
0%
Down Size 1/2 Ton
15%
0%
Duct Sealing
15%
0%
Early Replacement of AC/HP Equipment
15%
0%
Right Sizing
15%
0%
HPWH, Electric, 80 gal
0%
0%
HPWH, Electric, 50 gal
0%
0%
HPWH, Oil, 80 gal
0%
0%
HPWH, Oil, 50 gal
0%
0%
WiFi Enabled Thermostat with Cooling
0%
0%
ECM/Oil Replace Furnace
15%
0%
ECM Gas Rebate
15%
0%
Oil Heat Replacement
15%
0%
EnergyWise
Air Sealing, Oil
2%
0%
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
SONP
NTG
0%
0%
0%
0%
0%
0%
0%
0%
100%
100%
100%
100%
96%
100%
97%
104%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
85%
85%
85%
85%
85%
85%
85%
85%
85%
85%
85%
85%
85%
85%
100%
100%
100%
100%
0%
0%
0%
0%
100%
85%
85%
85%
0%
98%
285
Rhode Island TRM
Appendices
Duct Insulation, Oil
Insulation, Oil
Duct Sealing, Oil
CFL (Electric)
CFL (Non-electric)
DHW (Electric)
DHW (Non-electric)
Fixtures (Electric)
Fixtures (Non-electric)
Refrigerators and Freezers (Electric)
Refrigerators and Freezers (Non-electric)
SPACE Insulation (Electric)
SPACE Insulation (Non-electric)
SPACE Air Sealing (Electric)
SPACE Air Sealing (Non-electric)
Residential Lighting
Indoor Fixture
LED Fixture
LED Bulb
Outdoor Fixture
Screw-in Bulbs
Screw-in Bulbs (Hard to Reach)
Screw-in Bulbs (Specialty bulbs)
Torchiere
Residential Appliances
Computer Monitors
Freezer Rebate
LCD/TV
Pool Pumps
Refrigerator Recycle – Secondary Replaced
Refrigerator Recycle – Primary
Refrigerator Recycle – Secondary, Not Replaced
Freezer Recycling
Refrigerator Rebate
Smart Strips
0%
2%
2%
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
100%
98%
98%
97%
97%
97%
97%
97%
97%
97%
97%
97%
97%
97%
97%
8%
0%
0%
12%
4%
0%
0%
7%
0%
0%
0%
0%
96%
100%
100%
95%
66%
15%
40%
6%
0%
0%
0%
3%
0%
0%
0%
0%
34%
85%
60%
97%
25%
25%
25%
0%
27%
38%
29%
43%
25%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
75%
75%
75%
100%
73%
62%
71%
57%
75%
100%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
100%
100%
100%
100%
100%
100%
100%
100%
Single Family Appliance Management
0%
Baseload/Education
0%
CFLs
0%
CFL Fixture
0%
DHW Measures (Electric)
0%
DHW Measures (Gas/Other)
0%
DHW Measures (Oil)
0%
Electric Weatherization
0%
Freezer Replacement
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
286
Rhode Island TRM
Heating System Replacement (Oil)
Oil Weatherization
Refrigerator Replacement
Waterbed
Window AC Replacement
Appliance Removal
Pool or AC Timers
HPHW 50 gallon - Oil
HPHW 50 gallon - Electric
Appendices
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
100%
100%
100%
100%
100%
100%
100%
100%
100%
EVALUATIONS
Low Income program Free Ridership and Spillover are assumed to be zero.
Products and Lighting values are from NMR studies completed in 2011.503,504
HVAC Cooling equipment is an estimate based on the residential HVAC market research.505
503
NMR Group, Inc., The Rhode Island ApplianceTurn-In Program Process Evaluation, March 4, 2011.
NMR Group, Inc., Results of the Multistate CFL Modeling Effort, April 15, 2011
505
Market Research for the Rhode Island, Massachusetts and Connecticut Residential HVAC Market, December 2002, Final
Report.
504
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
287
Rhode Island TRM
Appendices
Commercial and Industrial Electric Efficiency Programs
The Net-to-Gross adjustments for measures implemented through National Grid’s Commercial
and Industrial electric energy efficiency programs are studied at the end-use level for each
program.
Unless otherwise noted, all factors are based on a survey of National Grid customers who
installed efficiency measures during 2009 in Massachusetts and Rhode Island. 506
Table 48: NTG Factors for C&I Electric Efficiency Programs
Commercial Electric Measures
Measure
FR
C&I New Construction and Major Renovation
Advanced Lighting Design (Performance Lighting)
32%
Lighting Controls
32%
Lighting Systems
32%
Demand Control Ventilation (DCV)
12%
Dual Enthalpy Economizer Controls (DEEC)
12%
ECM Fan Motors
12%
HE Chiller
12%
Single-Package and SS Heat Pump Systems
12%
Single-Package and SS Unitary air conditioners
12%
HE Air Compressor
20%
Refrigerated Air Dryers
20%
Variable Frequency Drives
74%
Commercial Electric Ovens
0%
Commercial Electric Steam Cooker
0%
Commercial Electric Griddle
0%
Custom
18%
C&I Large Retrofit
Lighting Controls
12%
Lighting Systems
12%
Energy Management System (EMS)
25%
Hotel Occupancy Sensors
25%
Vending Machine and Cooler Controls
25%
HE Air Compressor
24%
Variable Frequency Drives
17%
Custom
14%
C&I Small Retrofit
Lighting Controls
6%
Lighting Systems
6%
Programmable Thermostats
1%
Case Motor Replacement
1%
SOP
SONP
NTG
5%
5%
5%
1%
1%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
4%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
0%
0%
0%
2%
75%
75%
75%
91%
91%
91%
91%
91%
91%
83%
83%
28%
100%
100%
100%
96%
7%
7%
5%
5%
5%
0%
1%
8%
2%
2%
2%
2%
2%
2%
2%
1%
97%
97%
82%
82%
82%
78%
86%
95%
2%
2%
4%
4%
0%
0%
0%
0%
96%
96%
103%
103%
506
PA Consulting Group (2010). National Grid USA 2009 Commercial and Industrial Programs Free-ridership and Spillover
Study. Prepared for National Grid.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
288
Rhode Island TRM
Appendices
Cooler Night Covers
Cooler/Freezer Door Heater Control
Cooler/Freezer Evaporator Fan Controls
ECM for Evaporator Fans in Walk-in Coolers and Freezers
Electronic Defrost Control
LEDs in Freezers/Coolers
Novelty Cooler Shutoff
1%
1%
1%
1%
1%
6%
1%
4%
4%
4%
4%
4%
2%
4%
0%
0%
0%
0%
0%
0%
0%
103%
103%
103%
103%
103%
96%
103%
EVALUATIONS
All values are based on the PA Consulting group study completed in 2010.507
507
PA Consulting Group. 2009 Commercial and Industrial Programs Free-ridership and Spillover Study, June 21, 2010.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
289
Rhode Island TRM
Appendices
Residential Gas Efficiency Programs
The Net-to-Gross adjustments for measures implemented through National Grid’s Residential
and Low Income Gas energy efficiency programs are determined on a measure level. The
current NTG factors are primarily based on one of the following two sources:
•
A 2011 Massachusetts statewide research-based evaluation of similar programs to
determine appropriate NTG assumptions in the absence of direct program evaluation.
•
A 2010 impact evaluation of the Massachusetts HEHE program, which is similar to the
Rhode Island program.
Table 49: NTG Factors for Residential Gas Efficiency Programs
Residential Natural Gas Measures
Measure Name
FR
SOP
SONP
NTG
Residential Heating and Water Heating
Boiler (AFUE >= 90%)
60%
Boiler (AFUE >= 96%)
25%
HTR Boiler (AFUE >= 90%)
20%
HTR Boiler (AFUE >= 96%)
8%
Boiler Reset Controls
0%
HTR Boiler Reset Controls
0%
Condensing Water Heater
37%
HTR Condensing Water Heater
12%
ES Programmable Thermostats
58%
HTR ES Programmable Thermostats
19%
Wi-Fi Thermostat
0%
Furnace w/ ECM (AFUE = 95%)
40%
Furnace w/ ECM (AFUE = 96%)
25%
HTR Furnace w/ ECM (AFUE = 95%)
20%
HTR Furnace w/ ECM (AFUE = 96%)
8%
Heat Recovery Ventilator
0%
HTR Heat Recovery Ventilator
0%
Indirect Water Heater
66%
HTR Indirect Water Heater
22%
Integrated water heater/condensing boiler
60%
HTR Integrated water heater/condensing boiler
20%
Tankless Water Heaters (EF >= 0.82)
63%
Tankless Water Heaters (EF >= 0.95)
37%
HTR Tankless Water Heaters (EF >= 0.82)
21%
HTR Tankless Water Heaters (EF >= 0.95)
12%
14%
14%
0%
0%
0%
0%
0%
0%
0%
0%
0%
19%
19%
0%
0%
0%
0%
0%
0%
14%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
54%
89%
80%
92%
100%
100%
63%
88%
42%
81%
100%
79%
94%
60%
92%
100%
100%
34%
78%
54%
80%
37%
63%
79%
88%
Single Family Appliance Management
Gas Heating System Replacement
0%
Gas Weatherization
0%
0%
0%
0%
0%
100%
100%
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
290
Rhode Island TRM
Appendices
EVALUATIONS
Low Income program Free Ridership and Spillover are assumed to be zero.
In the Residential Heating and Water Heating program, free-ridership rates are based on the results of the
2010 impact evaluation508 , the 2011 NTG study509 or NTGR agreed upon with the PAs and Consultants.
The hard-to-reach (HTR) version of each of these measures has assumed free-ridership rates set to 1/3 the
value of the non-HTR measure510.
508
Nexus Market Research (2010). HEHE Process and Impact Evaluation. Prepared for GasNetworks
Nexus Market Research (2011). Estimated Net-To-Gross (NTG) Factors for the Massachusetts Program Administrators
(PAs) 2010 Residential New Construction Programs, Residential HEHE and Multi-Family Gas Programs, and Commercial and
Industrial Gas Programs. Prepared for Massachusetts Program Administrators and the Energy Efficiency Advisory Council.
Study 11 in the 2010 Massachusetts Electric Energy Efficiency Annual Report
510
Regional common assumption.
509
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
291
Rhode Island TRM
Appendices
Commercial and Industrial Gas Efficiency Programs
The Net-to-Gross adjustments for measures implemented through National Grid’s C&I Gas
energy efficiency programs are currently determined for one of three measure categories:
“Prescriptive” measures, for which a customer receives a standard rebate for a particular
efficiency measure; “Custom” measures, for which efficiency savings and incentives are
determined on a case-by-case basis; and “MF Initiative” measures. NTG assumptions for these
groups are based on the following:
•
A 2011 Massachusetts statewide research-based evaluation of similar programs to
determine appropriate NTG assumptions in the absence of direct program evaluation.
Table 50: NTG Factors for C&I Gas Efficiency Programs
Commercial Natural Gas Measures
TRM Measure Group
FR
C&I New Construction & Major Renovation
Gas Condensing Hot Water Boilers
19.9%
Integrated Water Heater/Condensing Boiler (0.90 EF, 0.90
19.9%
AFUE)
Condensing Stand-Alone Water Heater
19.9%
Furnaces
19.9%
Infrared Heaters
19.9%
Water Heaters
19.9%
Commercial Ovens
19.9%
Commercial Griddle
19.9%
Commercial Fryers
19.9%
Commercial Steamer
19.9%
Custom Measures
4%
C&I Retrofit
Boiler Reset Controls
19.9%
ES Programmable Thermostats
19.9%
Pre-Rinse Spray Valve
19.9%
Custom Measures
4%
C&I Direct Install
ES Programmable Thermostats
19.9%
Pre-Rinse Spray Valve
19.9%
Faucet Aerators
19.9%
Steam Traps
19.9%
Pipe Insulation
19.9%
Low Flow Shower Heads
19.9%
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
SOP
SONP
NTG
2.4%
2.4%
0%
0%
82.5%
82.5%
2.4%
2.4%
2.4%
2.4%
2.4%
2.4%
2.4%
2.4%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
82.5%
82.5%
82.5%
82.5%
82.5%
82.5%
82.5%
82.5%
96%
2.4%
2.4%
2.4%
0%
0%
0%
0%
0%
82.5%
82.5%
82.5%
96%
2.4%
2.4%
2.4%
2.4%
2.4%
2.4%
0%
0%
0%
0%
0%
0%
82.5%
82.5%
82.5%
82.5%
82.5%
82.5%
292
Rhode Island TRM
Appendices
EVALUATIONS
All prescriptive NTG factors are based on the results of the 2010 Commercial and Industrial Natural Gas
Programs Free-ridership and Spillover Study conducted by TetraTech for the Massachusetts Gas Program
Administrators.511
All custom NTG factors are based on the results of the 2010 Estimated Net-To-Gross (NTG) Factors for
the Massachusetts Program Administrators (PAs) 2010 Residential New Construction Programs,
Residential HEHE and Multi-Family Gas Programs, and Commercial and Industrial Gas Programs study
conducted by NMR Group, Inc. for the MA PAs.512
Since Rhode Island programs are similar to Massachusetts’, the results from Massachusetts
studies are judged to be applicable to Rhode Island.
511
TetraTech (2011). National Grid, NSTAR, Unitil, Berkshire Gas, Columbia Gas, and New England Gas
2010 Commercial and Industrial Natural Gas Programs Free-ridership and Spillover Study. September 20, 2011
512
NMR Group, Inc (2011). Massachusetts Program Administrators and the Energy Efficiency Advisory Council
Estimated Net-To-Gross (NTG) Factors for the Massachusetts Program Administrators (PAs) 2010 Residential New Construction
Programs, Residential HEHE and Multi-Family Gas Programs, and Commercial and Industrial Gas Programs, July 20, 2011.
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
293
Rhode Island TRM
Appendices
(page intentionally left blank)
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
294
Rhode Island TRM
Appendices
Appendix C: Non-Energy Impacts
Per Measure NEIs for Residential Electric and Natural Gas Programs
End Use
TRM Measures
NEI
Description
Lighting
Indoor Fixture
Outdoor Fixture
LED Fixture
CFL Bulb
Products
HVAC
Various
November 2011
LED Bulb
Refrigerator/Freeze
r Recycling
Value or
Algorithm
$3.50
Basis
Duration
per measure
One Time
Lighting
Quality and
Lifetime
O&M savings due to more
efficient fixtures
Lighting
Quality and
Lifetime
Refrigerator/
Freezer Turn-in
O&M savings due to more
efficient bulbs
$3.00
per measure
One Time
Non-energy benefits of turning
in a refrigerator and/or freezer
as part of the MA turn-in
program. The total benefit is
comprised of 3 parts: $1.06 for
avoided landfill space, $1.25
for recycling of plastics and
glass, and $170.22 for
incineration insulating foam
Reduced incidence of fire and
carbon monoxide exposure as
a result of installing a new
heating system
Non-energy benefits associated
with installing a new room air
conditioner replacement
Reducing the need for foreign
energy imports thereby
increasing national security
Financial savings to utility as a
$172.53
per measure
One Time
$45.05
per measure
Annual
$49.50
per measure
Annual
MMBTU
Oil Savings
* $1.83
Elec: (kWh
per measure
Annual
per measure
Annual
Heating System
(Retrofit and
Rebate)
Improved
Safety
Window AC
(Retrofit)
All Measures with
oil savings
Window Air
Conditioner
Replacement
National
Security
All electric
Rate Discounts
© 2011 National Grid
ALL RIGHTS RESERVED
295
Rhode Island TRM
End Use
Appendices
TRM Measures
NEI
measures with kWh
savings and all gas
measures with
MMBTU savings
Description
result of a smaller portion of
energy being sold at the low
income rate
Value or
Algorithm
savings per
measure)*(
A16-A60)
Gas:
(therms
savings per
measure)*(
R12-R13)
Basis
Duration
(1) Source of NEIs is "Massachusetts Program Administrators: Massachusetts Special and Cross-Sector Studies Area, Residential and
Low-Income Non-Energy Impacts (NEI) Evaluation," NMR Group, Inc., Tetra Tech. 8.15.2011. Study employed literature search and
survey of participants to determine NEIs and is judged to be applicable to Rhode Island participants.
Per Participant NEIs for Residential Electric Programs
In addition to the measure-level Residential NEIs in the other tables, the 2011 study of Residential and Low Income NEIs identified a
number of participant-based NEIs which are claimed in the 2012 plan. These NEIs and their application are summarized in the table
below. Additional details on the NEIs can be found in the study, sourced below.
Program
NEI
Thermal Comfort
Residential New
Noise Reduction
Construction
Property Value
Increase
Residential
Cooling and
Thermal Comfort
Heating
Equipment
Noise Reduction
November 2011
Description
Greater participant-perceived comfort
in home
Less participant-perceived noise in the
home
Increased value of property and
expected ease of selling home
Greater participant-perceived comfort
in home
Less participant-perceived noise in the
© 2011 National Grid
ALL RIGHTS RESERVED
Measure Category
N/A
Heating System
Cooling System
Heating and Cooling System
Cooling System
296
Value
Duration
$77.00
Annual
$40.00
Annual
$72.00
Annual
$48.63
$3.92
$5.05
$2.83
Annual
Annual
Rhode Island TRM
Program
Appendices
NEI
Home Durability
Equipment
Maintenance
Health Benefits
EnergyWise
Measure Category
Heating and Cooling System
Heating System
Cooling System
Heating and Cooling System
Value
Duration
$1.42
$17.42
$1.54 Annual
$1.98
Heating System
Cooling System
Heating and Cooling System
Heating System
Cooling System
$102.40
$7.54
$9.42
$1.56
$0.13
Heating and Cooling System
$0.16
Heating System
Cooling System
Heating and Cooling System
Non-Low Income
$678.52
$62.65
$80.69
$125.00
Low Income
$101.00
Property Value
Increase
Increased value of property and
expected ease of selling home
Thermal Comfort
Greater participant-perceived comfort
in home
Noise Reduction
Less participant-perceived noise in the
home
Non-Low Income
$31.00
Low Income
$30.00
Increased home durability in terms of
maintenance requirements because of
better quality heating, cooling and
structural materials
Reduced maintenance costs of owning
newer and/or more efficient appliance
equipment
Fewer colds and viruses, improved
indoor air quality and ease of
maintaining healthy relative humidity
Non-Low Income
Home Durability
Equipment
Maintenance
Health Benefits
November 2011
Description
home
Increased home durability in terms of
maintenance requirements because of
better quality heating, cooling and
structural materials
Reduced maintenance costs of owning
newer and/or more efficient appliance
equipment
Fewer colds and viruses, improved
indoor air quality and ease of
maintaining healthy relative humidity
as a result of weatherization in home
© 2011 National Grid
ALL RIGHTS RESERVED
Low Income
Non-Low Income
Low Income
Non-Low Income
Low Income
297
$149.00
Annual
Annual
One
Time
Annual
Annual
Annual
$35.00
$124.00
Annual
$54.00
$4.00
$19.00
Annual
Rhode Island TRM
Program
Appendices
NEI
Description
as a result of weatherization in home
Property Value
Increase
Increased value of property and
expected ease of selling home
Rental Units
Marketability
Property Durability
Reduced Tenant
Complaints
Rental Unit Increased
Property Value
Arrearages
Bad Debt Write-offs
Terminations and
Reconnections
November 2011
Measure Category
Non-Low Income
Low Income
Financial savings to owners of LI
rental housing as a result of increased
marketability of the more efficient
housing.
Financial savings to owners of LI
rental housing as a result of more
durable and efficient materials being
installed.
Savings to owners of LI rental housing
in terms of staff time and materials as
a result of fewer tenant complaints
with the more efficient measures.
Owner-perceived increased property
value due to more energy efficient
measures
Reduced arrearage carrying costs as a
result of customers being more able to
pay their lower bills
Reduced costs to utility of
uncollectable, unpaid balances as a
result of customers being more able to
pay their lower bills
Reduced costs associated with
terminations and reconnections to
utility due to nonpayment as a result
of customers being more able to pay
their lower bills
© 2011 National Grid
ALL RIGHTS RESERVED
N/A
298
Value
Duration
$1,998.00
One
Time
$949.00
$0.96
Annual
$36.85
Annual
$19.61
Annual
$17.03
One
Time
$2.61
Annual
$3.74
Annual
$0.43
Annual
Rhode Island TRM
Appendices
Program
NEI
Customer Calls and
Collections
Notices
Single Family
Appliance
Management
Arrearages
Bad Debt Write-offs
Terminations and
Reconnections
Customer Calls and
Collections
Notices
Thermal Comfort
Noise Reduction
Home Durability
November 2011
Description
Utility savings in staff time and
materials for fewer customer calls as a
result of more timely bill payments
Financial savings to utility as a result
of fewer notices sent to customers for
late payments and terminations
Reduced arrearage carrying costs as a
result of customers being more able to
pay their lower bills
Reduced costs to utility of
uncollectable, unpaid balances as a
result of customers being more able to
pay their lower bills
Reduced costs associated with
terminations and reconnections to
utility due to nonpayment as a result
of customers being more able to pay
their lower bills
Utility savings in staff time and
materials for fewer customer calls as a
result of more timely bill payments
Financial savings to utility as a result
of fewer notices sent to customers for
late payments and terminations
Greater participant-perceived comfort
in home
Less participant-perceived noise in the
home
Increased home durability in terms of
maintenance requirements because of
better quality heating, cooling and
structural materials
© 2011 National Grid
ALL RIGHTS RESERVED
Measure Category
N/A
299
Value
Duration
$0.58
Annual
$0.34
Annual
$2.61
Annual
$3.74
Annual
$0.43
Annual
$0.58
Annual
$0.34
Annual
$101.00
Annual
$30.00
Annual
$35.00
Annual
Rhode Island TRM
Program
Appendices
NEI
Description
Reduced maintenance costs of owning
newer and/or more efficient appliance
equipment
Fewer colds and viruses, improved
indoor air quality and ease of
maintaining healthy relative humidity
as a result of weatherization in home
Increased value of property and
expected ease of selling home
Equipment
Maintenance
Health Benefits
Property Value
Increase
Safety-Related
Emergency Calls
Financial savings to the utility as a
result of fewer safety related
emergency calls being made
Measure Category
Heating System
Value
Duration
$54.00
Annual
$19.00
Annual
$949.00
One
Time
$8.43
Annual
(1) Source of NEIs is "Massachusetts Program Administrators: Massachusetts Special and Cross-Sector Studies Area, Residential and
Low-Income Non-Energy Impacts (NEI) Evaluation," NMR Group, Inc., Tetra Tech. 8.15.2011. Study employed literature search and
survey of participants to determine NEIs and is judged to be applicable to Rhode Island participants.
Per Participant NEIs for Residential Natural Gas Programs
Program
NEB
Description
Residential
Greater participant-perceived comfort
Heating and Hot
Thermal Comfort
in home
Water
Increased home durability in terms of
maintenance requirements because of
Home Durability
better quality heating, cooling and
structural materials
Reduced maintenance costs of owning
Equipment
newer and/or more efficient appliance
Maintenance
equipment
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
Measure Category
Heating System
Heating and Hot Water
System
Heating System
Hot Water System
Heating and Hot Water
System
Heating System
Heating and Hot Water
System
300
Value
Duration
$48.63
Annual
$1.83
$17.42
$2.13
Annual
$0.72
$102.40
$3.41
Annual
Rhode Island TRM
Program
Appendices
NEB
Health Benefits
Property Value
Increase
EnergyWise
Thermal Comfort
Noise Reduction
Home Durability
Health Benefits
Property Value
Increase
Rental Units
Marketability
Property Durability
November 2011
Description
Fewer colds and viruses, improved
indoor air quality and ease of
maintaining healthy relative humidity
as a result of weatherization in home
Increased value of property and
expected ease of selling home
Measure Category
Heating System
Heating and Hot Water
System
Heating System
Hot Water System
Heating and Hot Water
System
Greater participant-perceived comfort
in home
Less participant-perceived noise in the
home
Increased home durability in terms of
maintenance requirements because of
better quality heating, cooling and
structural materials
Fewer colds and viruses, improved
indoor air quality and ease of
maintaining healthy relative humidity
as a result of weatherization in home
Increased value of property and
expected ease of selling home
Financial savings to owners of LI
rental housing as a result of increased
marketability of the more efficient
housing.
Financial savings to owners of LI
rental housing as a result of more
durable and efficient materials being
installed.
© 2011 National Grid
ALL RIGHTS RESERVED
Value
Duration
$1.56
$0.06
$678.52
$82.56
$29.17
Annual
One
Time
$25.00
Annual
$11.22
Annual
$9.57
Annual
$0.79
Annual
N/A
$381.28
N/A
301
One
Time
$0.96
Annual
$36.85
Annual
Rhode Island TRM
Program
Appendices
NEB
Reduced Tenant
Complaints
Rental Unit
Increased Property
Value
Arrearages
Bad Debt Writeoffs
Terminations and
Reconnections
Customer Calls and
Collections
Notices
Single Family
Appliance
Management
Arrearages
Bad Debt Writeoffs
November 2011
Description
Savings to owners of LI rental housing
in terms of staff time and materials as
a result of fewer tenant complaints
with the more efficient measures.
Owner-perceived increased property
value due to more energy efficient
measures
Reduced arrearage carrying costs as a
result of customers being more able to
pay their lower bills
Reduced costs to utility of
uncollectable, unpaid balances as a
result of customers being more able to
pay their lower bills
Reduced costs associated with
terminations and reconnections to
utility due to nonpayment as a result
of customers being more able to pay
their lower bills
Utility savings in staff time and
materials for fewer customer calls as a
result of more timely bill payments
Financial savings to utility as a result
of fewer notices sent to customers for
late payments and terminations
Reduced arrearage carrying costs as a
result of customers being more able to
pay their lower bills
Reduced costs to utility of
uncollectable, unpaid balances as a
result of customers being more able to
pay their lower bills
© 2011 National Grid
ALL RIGHTS RESERVED
Measure Category
N/A
302
Value
Duration
$19.61
Annual
$17.03
One
Time
$2.61
Annual
$3.74
Annual
$0.43
Annual
$0.58
Annual
$0.34
Annual
$2.61
Annual
$3.74
Annual
Rhode Island TRM
Program
Appendices
NEB
Terminations and
Reconnections
Customer Calls and
Collections
Notices
Safety-Related
Emergency Calls
Financial savings to the utility as a
result of fewer safety related
emergency calls being made
Thermal Comfort
Greater participant-perceived comfort
in home
Noise Reduction
Home Durability
Equipment
Maintenance
Health Benefits
November 2011
Description
Reduced costs associated with
terminations and reconnections to
utility due to nonpayment as a result
of customers being more able to pay
their lower bills
Utility savings in staff time and
materials for fewer customer calls as a
result of more timely bill payments
Financial savings to utility as a result
of fewer notices sent to customers for
late payments and terminations
Less participant-perceived noise in the
home
Increased home durability in terms of
maintenance requirements because of
better quality heating, cooling and
structural materials
Reduced maintenance costs of owning
newer and/or more efficient appliance
equipment
Fewer colds and viruses, improved
indoor air quality and ease of
maintaining healthy relative humidity
© 2011 National Grid
ALL RIGHTS RESERVED
Measure Category
Value
Duration
$0.43
Annual
$0.58
Annual
$0.34
Annual
Heating System
$8.43
Annual
Insulation
Air Sealing
Heating System
Insulation
Air Sealing
Insulation
Air Sealing
$25.38
$30.23
$28.01
$13.56
$16.39
$8.76
$10.61
Heating System
$9.72
Heating System
$27.43
Annual
Insulation
Air Sealing
$4.77
$5.69
Annual
Heating System
$5.27
303
Annual
Annual
Annual
Rhode Island TRM
Program
Appendices
NEB
Description
as a result of weatherization in home
Measure Category
Value
Duration
Insulation
$223.63
One
Air Sealing
$144.93
Time
Heating System
$249.20
(1) Source of NEIs is "Massachusetts Program Administrators: Massachusetts Special and Cross-Sector Studies Area, Residential and
Low-Income Non-Energy Impacts (NEI) Evaluation," NMR Group, Inc., Tetra Tech. 8.15.2011. Study employed literature search and
survey of participants to determine NEIs and is judged to be applicable to Rhode Island participants.
Property Value
Increase
November 2011
Increased value of property and
expected ease of selling home
© 2011 National Grid
ALL RIGHTS RESERVED
304
Rhode Island TRM
Appendices
Per Measure NEIs for Commercial and Industrial Electric Programs
End Use
Description
Operation & Maintenance savings
from fewer replacements over the life
New Construction CFL
O&M
O&M
Savings
of the more efficient measure
Operation & Maintenance savings
O&M
from fewer replacements over the life
Retrofit CFL O&M
of the more efficient measure
Savings
Operation & Maintenance savings
from fewer replacements over the life
New Construction LED
O&M
Traffic Light O&M
Savings
of the more efficient measure
Operation & Maintenance savings
from fewer replacements over the life
Retrofit LED Traffic Light O&M
O&M
Savings
of the more efficient measure
Lighting
Operation & Maintenance savings
New Construction and EI
O&M
from fewer replacements over the life
of the more efficient measure
Control/Sensor O&M
Savings
Operation & Maintenance savings
from fewer replacements over the life
Retrofit Fluorescent Lamp- O&M
Ballast O&M
Savings
of the more efficient measure
SBS Retrofit Fluorescent
Operation & Maintenance savings
Lamp-Ballast w/ Reflector O&M
from fewer replacements over the life
O&M
of the more efficient measure
Savings
Operation & Maintenance savings
from fewer replacements over the life
O&M
Retrofit Exit Sign O&M
of the more efficient measure
Savings
(1) Source is Optimal Energy, Inc. MEMO "Non-Electric Benefits Analysis Update"
11/7/2008
November 2011
TRM Measures
NEB
© 2011 National Grid
ALL RIGHTS RESERVED
305
Value
Basis
Type
Annual
$17.93 Unit
Annual
$18.67 Unit
Annual
$30.02 Unit
Annual
$29.37 Unit
Annual
$6.69 kW Saved
Annual
$0.41 Unit
Annual
$0.91 Unit
Annual
$33.65 Unit
Rhode Island TRM
November 2011
Appendices
© 2011 National Grid
ALL RIGHTS RESERVED
306
Rhode Island TRM
Appendices
Appendix D: Table of Referenced Documents
The
Reference
Consortium for Energy Efficiency (2008).
Consumer Electronics Program Guide:
Information on Voluntary Approaches for the
Promotion of Energy Efficient Consumer
Electronics - Products and Practices.
Digital Document Filename and/or Weblink
CEE_2008_Consumer_Electronics_Program_Guide.pdf
Energy & Resource Solutions (2005). Measure
Life Study. Prepared for The MA Joint Utilities.
ERS_2005_Measure_Life_Study.pdf
2012 Rhode Island Device Codes and Rated
Lighting System Wattage Table – New
Construction.
(blank)
2012 Rhode Island Device Codes and Rated
Lighting System Wattage Table – Retrofit.
(blank)
ACEEE (2006). Emerging Technologies Report:
Advanced Boiler Controls. Prepared for ACEEE.
ACEEE_2006_Emerging_Technologies_Report_Advanced_B
oiler_Controls.pdf
ADM Associates, Inc. (2009). Residential Central
AC Regional Evaluation – Free-Ridership
Analysis. Prepared for CL&P.
ADM_2009_Residential_Central_AC_Regional_Evaluation.p
df
Cadmus Group (2011). Impact Evaluation for Rhode
Island Multifamily Gas Program EnergyWise
(Program Year 2010). Prepared for National Grid
(blank)
Chan, Tumin (2010). Formulation of a
Prescriptive Incentive for the VFD and Motors &
VFD Impacts Tables at NSTAR. Prepared for
NSTAR.
Chan_2010_Formulation_of_Prescriptive_VFD_Impact_Tabl
es_NSTAR.pdf
CL&P Program Savings Documentation for 2011
Program Year (2010)
2011_CT_PSD.pdf
Consortium for Energy Efficiency (2008).
Technology Opportunity Assessment: Convection
Ovens.
Davis Energy Group (2008). Proposal
Information Template for Residential Pool Pump
Measure Revisions. Prepared for Pacific Gas and
Electric Company.
DMI (2006). Impact Evaluation of 2004
Compressed Air Prescriptive Rebates. Prepared
for National Grid.
DOE (2008). ENERGY STAR® Residential
Water Heaters: Final Criteria Analysis. Prepared
for the DOE
ENERGY STAR Website (2011). Dishwasher
Key Product Criteria.
ENERGY STAR Website (2011). Light Bulbs
for Consumers.
November 2011
CEE_2008_Technology_Opportunity_Assessment_Convectio
n_Ovens.pdf
Davis_2008_Residential_Pool_Pump_Measure_Revisions.pdf
DMI_2006_Impact_Evaluation_2004_Compressed_Air_Presc
riptive_Rebates.pdf
DOE_2008_ENERGY_STAR_Residential_Water_Heaters_Fi
nal_Criteria_Analysis.pdf
ENERGY_STAR_Website_Dishwashers_Key_Product_Crite
ria_2011 10 12.pdf
http://www.energystar.gov/index.cfm?c=dishwash.pr_crit_dis
hwashers
ENERGY_STAR_Website_Light_Bulbs_for_Consumers_201
1 10 12.pdf
http://www.energystar.gov/index.cfm?fuseaction=find_a_prod
uct.showProductGroup&pgw_code=ILB
© 2011 National Grid
ALL RIGHTS RESERVED
307
Rhode Island TRM
Appendices
ENERGY STAR Website (2011). Televisions for
Consumers.
Environmental Protection Agency (2008). Life
Cycle Cost Estimate for ENERGY STAR
Television.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for an ENERGY STAR
Qualified Boiler.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for an ENERGY STAR
Qualified Gas Residential Furnace.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for ENERGY STAR
Qualified Gas Fryer.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for ENERGY STAR
Qualified Lighting Fixtures.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for ENERGY STAR
Qualified Residential Clothes Washer.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for ENERGY STAR
Qualified Residential Refrigerator.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for ENERGY STAR
Qualified Room Air Cleaner.
Environmental Protection Agency (2009). Life
Cycle Cost Estimate for ENERGY STAR
Qualified Room Air Conditioner.
Environmental Protection Agency (2009).
Savings Calculator for ENERGY STAR®
Qualified Commercial Kitchen Equipment.
Environmental Protection Agency (2010). Life
Cycle Cost Estimate for ENERGY STAR Office
Equipment.
Environmental Protection Agency (2010). Life
Cycle Cost Estimate for ENERGY STAR
Qualified Dishwasher.
Environmental Protection Agency (2010). Life
Cycle Cost Estimate for Programmable
Thermostats.
November 2011
ENERGY_STAR_Website_Televisions_for_Consumers_201
1 10 12.pdf
http://www.energystar.gov/index.cfm?fuseaction=find_a_prod
uct.showProductGroup&pgw_code=TV
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Television.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Qualified_Boiler.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Gas_Residential_Furnace.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/Calc_Furnaces.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Gas_Fryer.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/commercial_kitchen_equipment_calculator.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Qualified_Lighting_Fixtures.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/LightingCalculator.xlsx
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Residential_Clothes_Washer.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/CalculatorConsumerClothesWasher.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Residential_Refrigerator.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/Consumer_Residential_Refrig_Sav_Calc.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Room_Air_Cleaner.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/CalculatorRoomAirCleaner.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Room_Air_Conditioner.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/CalculatorConsumerRoomAC.xls
Savings_Calculator_for_ENERGY_STAR_Commercial_Kitc
hen_Equipment.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/commercial_kitchen_equipment_calculator.xls
EPA_2010_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Office_Equipment.xls
EPA_2009_Lifecycle_Cost_Estimate_for_ENERGY_STAR_
Dishwasher.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/CalculatorConsumerDishwasher.xls
EPA_2011_Lifecycle_Cost_Estimate_for_Programmable_Th
ermostat.xls
http://www.energystar.gov/ia/business/bulk_purchasing/bpsav
ings_calc/CalculatorProgrammableThermostat.xls
© 2011 National Grid
ALL RIGHTS RESERVED
308
Rhode Island TRM
Appendices
Federal Energy Management Program (2010).
Energy Cost Calculator for Faucets and
Showerheads.
Food Service Technology Center (2011). Electric
Griddle Life-Cycle Cost Calculator.
Food Service Technology Center (2011). Gas
Combination Oven Life-Cycle Cost Calculation.
Food Service Technology Center (2011). Gas
Conveyor Oven Life-Cycle Cost Calculation.
Food Service Technology Center (2011). Gas
Griddle Life-Cycle Cost Calculation.
GDS Associates, Inc. (2007). Measure Life
Report: Residential and Commercial/Industrial
Lighting and HVAC Measures. Prepared for The
New England State Program Working Group
GDS Associates, Inc. and Summit Blue
Consulting (2009). Natural Gas Energy
Efficiency Potential in Massachusetts. Prepared
for GasNetworks.
HEC, Inc. (1995). Analysis of Door Master WalkIn Cooler Anti-Sweat Door Heater Controls
Installed at Ten Sites in Massachusetts. Prepared
for NEPSCo.
HEC, Inc. (1996). Analysis of Savings from
Walk-In Cooler Air Economizers and Evaporator
Fan Controls. Prepared for NEPSCo.
HEC, Inc. (1996). Final Report for New England
Power Service Company Persistence of Savings
Study. Prepared for NEPSCo.
ICF (2008). Energy/Demand Savings Calculation
and Reporting Methodology for the
Massachusetts ENERGY STAR ® Homes
Program. Prepared for Joint Management
Committee.
KEMA (2009). Design 2000plus Lighting Hours
of Use and Load Shape Measurement Study.
Prepared for National Grid.
KEMA (2009). National Grid USA 2008 Custom
Lighting Impact Evaluation, Final Report.
Prepared for National Grid.
KEMA (2009). Sample Design and Impact
Evaluation Analysis of the 2008 Custom
Program. Prepared for National Grid.
November 2011
FEMP_2011_Energy_Cost_Calculator_for_Faucets_2011 10
12.pdf AND
FEMP_2011_Energy_Cost_Calculator_for_Showerheads_201
1 10 12.pdf
FSTC_2011_Electric_Griddle_LifeCycle_Cost_Calculation_2
011 10 12.pdf
http://www.fishnick.com/saveenergy/tools/calculators/egridca
lc.php
FSTC_2011_Gas_Combination_Oven_LifeCycle_Cost_Calcu
lation_2011 10 12.pdf
http://www.fishnick.com/saveenergy/tools/calculators/gcombi
calc.php
FSTC_2011_Gas_Conveyor_Oven_LifeCycle_Cost_Calculati
on_2011 10 12.pdf
http://www.fishnick.com/saveenergy/tools/calculators/gconvo
vencalc.php
FSTC_2011_Gas_Griddle_LifeCycle_Cost_Calculation_2011
10 12.pdf
http://www.fishnick.com/saveenergy/tools/calculators/ggridca
lc.php
GDS_2007_Measure_Life_Report_Residential_and_CI_Light
ing_and_HVAC_Measures.pdf
GDS_SummitBlue_2009_Natural_Gas_Energy_Efficiency_P
otential_in_MA.pdf
HEC_1995_Analysis_of_Door_Master_WalkIn_Cooler_Anti-Sweat_Door_Heater_Controls.pdf
HEC_1996_Analysis_of_Savings_from_WalkIn_Cooler_Air_Economizers_and_Evap_Fan_Controls.pdf
HEC_1996_Persistence_of_Savings_Study.pdf
ICF_2008_Energy_Demand_Savings_Calculation_Reporting
_Methodology_MA_ESH_Program.pdf
KEMA_2009_NGRID_D2_Lighting_HOU_Load_Shapes_M
easurement_Study.pdf
KEMA_2009_NGRID_2008_Custom_Lighting_Impact_Eval
uation.pdf
KEMA_2009_NGRID_Sample_Design_and_Impact_Evaluati
on_Analysis_2008_Custom_Program.pdf
© 2011 National Grid
ALL RIGHTS RESERVED
309
Rhode Island TRM
Appendices
KEMA (2010). Sample Design and Impact
Evaluation Analysis of 2009 Custom Program.
Prepared for National Grid.
KEMA (2011). Impact Evaluation of Rhode
Island C&I Custom Gas Installations. Prepared
for National Grid.
KEMA (2011). C&I Lighting Load Shape Project
FINAL Report. Prepared for the Regional
Evaluation, Measurement and Verification
Forum.
KEMA (2011). C&I Unitary HVAC Load Shape
Project Final Report. Prepared for the Regional
Evaluation, Measurement and Verification
Forum.
KEMA (2011). Impact Evaluation of Rhode
Island Custom Comprehensive and HVAC
Installations. Prepared for National Grid.
KEMA (2011). Prescriptive Condensing Boiler
Impact Evaluation, Project 5 Prescriptive Gas.
Prepared for Massachusetts Energy Efficiency
Program Administrators.
Massachusetts Electric Utilities (2003). MEMO:
Non-Electric Benefit Performance Metrics –
Residential 1. Prepared for Massachusetts NonUtility Parties.
KEMA_2010_NGRID_Sample_Design_and_Impact_Evaluati
on_Analysis_2009_Custom_Program.pdf
(blank)
KEMA_2011_NEEP_EMV_CI_Lighting_Load_Shape_Proje
ct.pdf
KEMA_2011_NEEP_EMV_CI_Unitary_HVAC_Load_Shape
_Project.pdf
(blank)
KEMA_2011_LCIEC_Prescriptive_Condensing_Boiler_Impa
ct_Evaluation_Project5_PrescriptiveGas.pdf
MEU_2003_NonElectric_Benefit_Performance_Metrics_Resi
dential1.pdf
National Grid and NSTAR (2010). Energy
Analysis: Hotel Guest Occupancy Sensors.
NGRID_NSTAR_Energy_Analysis_Hotel_Guest_Occupancy
_Sensors.pdf
Nexant (2006). DSM Market Characterization
Report. Prepared for Questar Gas.
Nexant_2006_DSM_Market_Characterization_Report.pdf
Nexus Market Research and Dorothy Conant
(2006). Massachusetts ENERGY STAR ®
Homes: 2005 Baseline Study: Part I: Inspection
Data Analysis Final Report. Prepared for Joint
Management Committee.
NMR_Conant_2006_MA_ESH_2005_Baseline_Study_Part_I
_Inspection_Data_and_Analysis.pdf
Nexus Market Research and Dorothy Conant
(2006). Massachusetts ENERGY STAR ®
Homes: 2005 Baseline Study: Part II:
Homeowner Survey Analysis Incorporating
Inspection Data Final Report. Prepared for Joint
Management Committee.
NMR_Conant_2006_MA_ESH_2005_Baseline_Study_Part_I
I_Homeowner_Survey_Analaysis_Incorporating_Inspection_
Data.pdf
Nexus Market Research and RLW Analytics
(2004) Impact Evaluation of the MA, RI, and VT
2003 Residential Lighting Programs. Submitted
to The Cape Light Compact, State of Vermont
Public Service Department for Efficiency
Vermont, National Grid, Northeast Utilities,
NSTAR, and Unitil Energy Systems, Inc.
NMR_RLW_2004_Impact_Evaluation_MA_RI_VT_2003_R
esidential_Lighting_Programs.pdf
Nexus Market Research and RLW Analytics
(2008). Residential Lighting Measure Life Study.
Prepared for New England Residential Lighting
Program Sponsors.
NMR_RLW_2008_Residential_Lighting_Measure_Life_Stud
y.pdf
November 2011
© 2011 National Grid
ALL RIGHTS RESERVED
310
Rhode Island TRM
Appendices
Nexus Market Research and RLW Analytics
(2009). Residential Lighting Markdown Impact
Evaluation. Prepared for Markdown and
Buydown Program Sponsors in CT, MA, RI, and
VT.
Nexus Market Research and The Cadmus Group
(2010). HEHE Process and Impact Evaluation –
Volume 1 Integrated Report of Findings.
Prepared for GasNetworks.
Northeast Energy Efficiency Partnerships (2006).
Strategies to Increase Residential HVAC
Efficiency in the Northeast. Prepared for National
Association of State Energy Offices.
NMR_RLW_GDS_2009_Residential_Lighting_Markdown_I
mpact_Evaluation.pdf
NMR_Cadmus_2010_HEHE_Process_Impact_Evaluation_V
ol1_Integrated_Report_Findings.pdf
NEEP_2006_Strategies_Increase_Residential_HVAC_Efficie
ncy_Northeast.pdf
Northeast Energy Efficiency Partnerships (2008).
Refrigerator and Freezer Screening Tool.
NEEP_2008_Refrigerator_and_Freezer_Screening_Tool.xls
Oppenheim, Jerrold (2000). MEMO: Low Income
DSM Program non-energy benefits. Prepared for
MECo, NSTAR and WMECO.
Oppenheim_2000_MEMO_LI_DSM_Program_NonEnergy_
Benefits.pdf
Optimal Energy, Inc. (2008). MEMO: NonElectric Benefits Analysis Update. Prepared for
Dave Weber, NSTAR.
PA Consulting Group (2010). National Grid USA
2009 Commercial and Industrial Programs Freeridership and Spillover Study. Prepared for
National Grid.
Pacific Gas & Electric Company – Customer
Energy Efficiency Department (2007). Work
Paper PGECOFST101, Commercial Convection
Oven, Revision #0.
Patel, Dinesh (2001). Energy Analysis: Dual
Enthalpy Control. Prepared for NSTAR.
Quantec, LLC (2000). Impact Evaluation: SingleFamily EnergyWise Program. Prepared for
National Grid.
Quantec, LLC (2005). Evaluation of National
Grid’s 2003 Appliance Management Program:
Room Air Conditioning Metering and NonEnergy Benefits Study. Prepared for National
Grid.
RLW Analytics (2002). Market Research for the
Rhode Island, Massachusetts, and Connecticut
Residential HVAC Market. Prepared for National
Grid, Northeast Utilities, NSTAR, Fitchburg, and
United Illuminating.
RLW Analytics (2004). 2003 Energy Initiative
"EI" Lighting Impact Evaluation Final Report.
Prepared for National Grid.
RLW Analytics (2004). Massachusetts Utilities
2003 Multiple Small Business Lighting Retrofit
Programs Impact Evaluation. Prepared for
Massachusetts Utilities.
November 2011
Optimal_2008_NonElectric_Benefits_Analysis_Update.pdf
PA_2010_NGRID_2009_CI_Programs_Freeridership_and_Spillover_Study.pdf
PGE_2007_Commercial_Convection_Oven_Work_Paper_PG
ECOFST10_Rev0.pdf
Patel_2001_Energy_Analysis_Dual_Enthalpy_Controls.pdf
Quantec_2000_Impact_Evaluation_Single_Family_EnergyWi
se_Program.pdf
Quantec_2005_Evaluation_NGRID_2003_AMP_Room_AC_
Metering_and_NonEnergy_Benefits_Study.pdf
RLW_2002_Market_Research_RI_MA_CT_Residential_HV
AC_Market.pdf
RLW_2004_NGRID_2003_EI_Lighting_Impact_Evaluation.
pdf
RLW_2004_Mass_Utilities_2003_Multiple_Small_Business_
Lighting_Retrofit_Program_Impact_Evaluation.pdf
© 2011 National Grid
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Rhode Island TRM
Appendices
RLW Analytics (2007). Final Report, 2005
Coincidence Factor Study. Prepared for United
Illuminating Company and Connecticut Lighting
& Power.
RLW Analytics (2007). Impact Evaluation
Analysis of the 2005 Custom SBS Program.
Prepared for National Grid.
RLW Analytics (2007). Lighting Controls Impact
Evaluation Final Report, 2005 Energy Initiative,
Design 2000plus and Small Business Services
Program. Prepared for National Grid.
RLW Analytics (2007). Small Business Services
Custom Measure Impact Evaluation. Prepared for
National Grid
RLW Analytics (2007). Validating the Impact of
Programmable Thermostats. Prepared for
GasNetworks.
RLW Analytics (2008). Coincidence Factor Study
Residential Air Conditioners. Prepared for
Northeast Energy Efficiency Partnerships’ New
England Evaluation and State Program Working
Group.
Sachs, Harvey (2003). Energy Savings from
Efficient Furnace Air Handlers in Massachusetts.
SBW Consulting (2004). EM&V Report for the
CUWCC Pre-Rinse Spray Head Distribution
Program. Prepared for the California Urban
Water Conservation Council.
Select Energy (2004). Analysis of Cooler Control
Energy Conservation Measures. Prepared for
NSTAR.
Select Energy (2004). Cooler Control Measure
Impact Spreadsheet Users’ Manual. Prepared for
NSTAR.
Summit Blue Consulting (2008). Large
Commercial and Industrial Retrofit Program
Impact Evaluation 2007. Prepared for National
Grid.
Summit Blue Consulting (2008). Multiple Small
Business Services Programs Impact Evaluation
2007. Prepared for Massachusetts Joint Utilities.
Tetra Tech and NMR Group (2011).
Massachusetts Special and Cross-Sector Studies
Area, Residential and Low-Income Non-Energy
Impacts (NEI) Evaluation. Prepared for
Massachusetts Program Administrators.
The Cadmus Group (2009). Impact Evaluation of
the 2007 Appliance Management Program and
Low Income Weatherization Program. Prepared
for National Grid.
The Cadmus Group (2010). EnergyWise 2008
Program Evaluation. Prepared for National Grid.
November 2011
RLW_2007_Final_Report_2005_Coincidence_Factor_Study.
pdf
RLW_2007_NGRID_Impact_Evaluation_Analysis_2005_Cus
tom_SBS_Program.pdf
RLW_2007_NGRID_Lighting_Controls_Impact_Evaluation.
pdf
RLW_2007_NGRID_SBS_Custom_Measure_Impact_Evaluat
ion.pdf
RLW_2007_Validating_Impacts_of_Programmable_Thermos
tats.pdf
RLW_2008_Coincidence_Factor_Study_Residential_Room_
Air_Conditioners.pdf
Sachs_2003_Energy_Savings_Efficient_Furnace_Air_Handle
rs_MA.pdf
SBW_2004_CUWCC_EMV_Report_PreRinse_Spray_Head_Distribution_Program.pdf
SelectEnergy_2004_NSTAR_Analysis_Cooler_Control_Ener
gy_Conservation_Measures.pdf
SelectEnergy_2004_NSTAR_Cooler_Control_Measure_Impa
ct_Spreadsheet_Users_Manual.pdf
SummitBlue_2008_NGRID_LCI_Retrofit_Program_Impact_
Evaluation_2007.pdf
SummitBlue_2008_Multiple_Small_Business_Service_Progra
ms_Impact_Evaluation_2007.pdf
TetraTech_NMR_2011_MACC_Res_LI_NEI_Evaluation.pdf
Cadmus_2009_Impact_Evalulation_2007_AMP_and_LI_Wea
therization_Program.pdf
Cadmus_2010_EnergyWise_2008_Program_Evaluation.pdf
© 2011 National Grid
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Rhode Island TRM
Appendices
The Cadmus Group (2011). Impact Evaluation for
Rhode Island Multifamily Gas Program
EnergyWise (Program Year 2010). Prepared for
National Grid.
The Cadmus Group (2011). MEMO: BFM Initial
Results. Prepared for Gail Azulay, NSTAR and
Bob Wirtshafter, EEAC.
The Fleming Group (1994). Persistence of
Commercial/Industrial Non-Lighting Measures,
Volume 2, Energy Efficient HVAC and Process
Cooling Equipment. Prepared for New England
Power Service Company.
The Fleming Group (1994). Persistence of
Commercial/Industrial Non-Lighting Measures,
Volume 3, Energy Management Control Systems.
Prepared for New England Power Service
Company.
Cadmus_2011_Impact_Evaluation_RI_MF_Gas_Program_E
W_PY2010.pdf
Cadmus_2011_MEMO_BFM_Initial_Results.pdf
Fleming_1994_Persistence_CI_NonLighting_Measures_Vol2
_Energy_Efficiency_HVAC_and_Process.pdf
Fleming_1994_Persistence_CI_NonLighting_Measures_Vol3
_Energy_Management_Control_Systems.pdf
USA Technologies Energy Management Product
Sheets (2006).
USATech_2006_Energy_Management_Product_Sheets.pdf
http://www.usatech.com/energy_management/energy_product
sheets.php
Veritec Consulting (2005). Region of Waterloo
Pre-Rinse Spray Valve Pilot Study, Final Report.
Prepared for Region of Waterloo.
Veritec_2005_Pre-Rinse_Spray_Valve_Pilot_Study.pdf
November 2011
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Rhode Island TRM
Appendices
Appendix E: Acronyms
ACRONYM
AC
AFUE
AHU
Btu
CF
CFL
CHP
COP
DCV
DHW
DOER
DSM
ECM
EER
EF
EFLH
ES
FCM
FR
HE
HID
HP
HSPF
HVAC
ISO
ISR
kW
kWh
LED
LCD
MMBtu
MW
MWh
NEB
NEI
NE-ISO
NTG
O&M
PA
PC
RR
SEER
SO
SPF
SSL
VSD
DESCRIPTION
Air Conditioning
Annual Fuel Utilization Efficiency (see the Glossary)
Air Handling Unit
British Thermal Unit (see the Glossary)
Coincidence Factor (see the Glossary)
Compact Fluorescent Lamp
Combined Heat and Power
Coefficient of Performance (see the Glossary)
Demand Controlled Ventillation
Domestic Hot Water
Department of Energy Resources
Demand Side Management (see the Glossary)
Electrically Commutated Motor
Energy Efficiency Ratio (see the Glossary)
Efficiency Factor
Equivalent Full Load Hours (see the Glossary)
ENERGY STAR® (see the Glossary)
Forward Capacity Market
Free-Ridership (see the Glossary)
High-Efficiency
High-Intensity Discharge (a lighting technology)
Horse Power (see the Glossary)
Heating Seasonal Performance Factor (see the Glossary)
Heating, Ventilating, and Air Conditioning
Independent System Operator
In-Service Rate (see the Glossary)
Kilo-Watt, a unit of electric demand equal to 1,000 watts
Kilowatt-Hour, a unit of energy (1 kilowatt of power supplied for one hour)
Light-Emitting Diode (one type of solid-state lighting)
Liquid Crystal Display (a technology used for computer monitors and similar displays)
One million British Thermal Units (see “Btu” in the Glossary)
Megawatt – a measure of electric demand equal to 1,000 kilowatts
Megawatt-hour – a measure of energy equal to 1,000 kilowatt-hours
Non-Electric Benefit (see the Glossary)
Non-Energy Impact
New England Independent System Operator
Net-to-Gross (see the Glossary)
Operations and Maintenance
Program Administrator (see the Glossary)
Personal Computer
Realization Rate (see the Glossary)
Seasonal Energy Efficiency Ratio (see the Glossary)
Spillover (see the Glossary)
Savings Persistence Factor (see the Glossary)
Solid-State Lighting (e.g., LED lighting)
Variable-Speed Drive
November 2011
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Rhode Island TRM
Appendices
Appendix F: Glossary
This glossary provides definitions as they are applied in this TRM for Rhode Island’ energy efficiency
programs. Alternate definitions may be used for some terms in other contexts.
TERM
Adjusted Gross
Savings
AFUE
Baseline Efficiency
Btu
Coefficient of
Performance (COP)
Coincidence Factor
(CF)
Connected Load
kW Savings
Deemed Savings
Deemed Calculated
Savings
Demand Savings
Demand Side
Management
(DSM)
Diversity
November 2011
DESCRIPTION
Gross savings (as calculated by the measure savings algorithms) that have been
subsequently adjusted by the application of all impact factors except the net-to-gross factors
(free-ridership and spillover). For more detail, see the section on Impact Factors for
Calculating Adjusted Gross and Net Savings.
Annual Fuel Utilization Efficiency. The measure of seasonal or annual efficiency of a
furnace or boiler. AFUE takes into account the cyclic on/off operation and associated
energy losses of the heating unit as it responds to changes in the load, which in turn is
affected by changes in weather and occupant controls.
The level of efficiency of the equipment that would have been installed without any
influence from the program or, for retrofit cases where site-specific information is
available, the actual efficiency of the existing equipment.
British thermal unit. A Btu is approximately the amount of energy needed to heat one
pound of water by one degree Fahrenheit.
Coefficient of Performance is a measure of the efficiency of a heat pump, air conditioner, or
refrigeration system. A COP value is given as the Btu output of a device divided by the Btu
input of the device. The input and output are determined at AHRI testing standards
conditions designed to reflect peak load operation.
Coincidence Factors represent the fraction of connected load expected to occur concurrent
to a particular system peak period; separate CF are found for summer and winter peaks. The
CF given in the TRM includes both coincidence and diversity factors multiplied into one
number. Coincidence factors are provided for peak periods defined by the NE-ISO for FCM
purposes and calculated consistent with the FCM methodology.
The connected load kW savings is the power saved by the equipment while in use. In some
cases the savings reflect the maximum power draw of equipment at full load. In other cases
the connected load may be variable, which must be accounted for in the savings algorithm.
Savings values (electric, fossil fuel and/or non-energy benefits) determined from savings
algorithms with assumed values for all algorithm parameters. Alternatively, deemed savings
values may be determined from evaluation studies. A measure with deemed savings will
have the same savings per unit since all measure assumptions are the same. Deemed
savings are used by program administrators to report savings for measures with welldefined performance characteristics relative to baseline efficiency cases. Deemed savings
can simplify program planning and design, but may lead to over- or under-estimation of
savings depending on product performance.
Savings values (electric, fossil fuel and/or non-energy benefits) that depend on a standard
savings algorithm and for which at least one of the algorithm parameters (e.g., hours of
operation) is project specific.
The reduction in demand due to installation of an energy efficiency measure, usually
expressed as kW and measured at the customer's meter (see Connected Load kW Savings).
Strategies used to manage energy demand including energy efficiency, load management,
fuel substitution, and load building.
A characteristic of a variety of electric loads whereby individual maximum demands occur
at different times. For example, 50 efficient light fixtures may be installed, but they are not
necessarily all on at the same time. See Coincidence Factor.
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Rhode Island TRM
TERM
Diversity Factor
End Use
Energy Efficiency
Ratio (EER)
ENERGY STAR®
(ES)
Energy Costing
Period
Equivalent Full
Load Hours
(EFLH)
Free Rider
Free-Ridership Rate
Gross kW
Gross kWh
Gross Savings
November 2011
Appendices
DESCRIPTION
This TRM uses coincidence factors that incorporate diversity (See Coincidence Factor),
thus this TRM has no separate diversity factors. A diversity factor is typically calculated as:
1) the percent of maximum demand savings from energy efficiency measures available at
the time of the company’s peak demand, or 2) the ratio of the sum of the demands of a
group of users to their coincident maximum demand.
Refers to the category of end use or service provided by a measure or technology (e.g.,
lighting, cooling, etc.). For the purpose of this manual, the list of end-uses include:
Lighting
Behavior
HVAC
Insulation & Air Sealing
Motors & Drives
Combined Heat & Power
Refrigeration
Solar Hot Water
Hot Water
Demand Response
Compressed Air
Photovoltaic Panels
Process*
*For residential measures, “process” is used for products that have low savings, such as
consumer electronics, or do not conform to existing end use categories. For commercial and
industrial measures, “process” is used for systematic improvements to manufacturing or
pump systems, or efficient models of specialty equipment not covered in other end uses.
The Energy Efficiency Ratio is a measure of the efficiency of a cooling system at a
specified peak, design temperature, or outdoor temperature. In technical terms, EER is the
steady-state rate of heat energy removal (i.e. cooling capacity) of a product measured in
Btuh output divided by watts input.
Brand name for the voluntary energy efficiency labeling initiative sponsored by the U.S.
Environmental Protection Agency.
A period of relatively high or low system energy cost, by season. The energy periods
defined by ISO-NE are:
• Summer Peak: 6am–10pm, Monday–Friday (except ISO holidays), June–September
• Summer Off-Peak: Summer hours not included in the summer peak hours: 10pm–6am,
Monday–Friday, all day on Saturday and Sunday, and ISO holidays, June–September
• Winter Peak: 6am–10pm, Monday–Friday (except ISO holidays), January–May and
October–December
• Winter Off-Peak: Winter hours not included in the sinter peak hours: 10pm–6am,
Monday–Friday, all day on Saturday and Sunday, and ISO holidays, January–May and
October–December.
The equivalent hours that equipment would need to operate at its peak capacity in order to
consume its estimated annual kWh consumption (annual kWh/connected kW).
A customer who participates in an energy efficiency program, but would have installed
some or all of the same measure(s) on their own, with no change in timing of the
installation, if the program had not been available.
The percentage of savings attributable to participants who would have installed the
measures in the absence of program intervention.
Expected demand reduction based on a comparison of standard or replaced equipment and
equipment installed through an energy efficiency program.
Expected kWh reduction based on a comparison of standard or replaced equipment and
equipment installed through an energy efficiency program.
A saving estimate calculated from objective technical factors. In this TRM, “gross savings”
are calculated with the measure algorithms and do not include any application of impact
factors. Once impact factors are applied, the savings are called “Adjusted Gross Savings”.
For more detail, see the section on Impact Factors for Calculating Adjusted Gross and Net
Savings.
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Rhode Island TRM
TERM
High Efficiency
(HE)
Horsepower (HP)
Heating Seasonal
Performance Factor
(HSPF)
Impact Factor
In-Service Rate
Measure Life
Lost Opportunity
Measure
Net Savings
Net-to-Gross Ratio
Non-Electric
Benefits (NEBs)
Non-Participant
On-Peak kW
Operating Hours
Participant
Prescriptive
Measure
November 2011
Appendices
DESCRIPTION
Refers to the efficiency measures that are installed and promoted by the energy efficiency
programs.
A unit for measuring the rate of doing work. One horsepower equals about three-fourths of
a kilowatt (745.7 watts).
A measure of the seasonal heating mode efficiencies of heat pumps expressed as the ratio of
the total heating output to the total seasonal input energy.
Generic term for a value used to adjust the gross savings estimated by the savings
algorithms in order to reflect the actual savings attributable to the efficiency program. In
this TRM, impact factors include realization rates, in-service rates, savings persistence,
peak demand coincidence factors, free-ridership, spillover and net-to-gross factors. See the
section on Impact Factors for more detail.
The percentage of units that are actually installed. For example, efficient lamps may have
an in-service rate less than 100% since some lamps are purchased as replacement units and
are not immediately installed. The in-service rate for most measures is 100%.
The number of years that an efficiency measure is expected to garner savings. These are
generally based on engineering lives, but sometimes adjusted based on observations of
market conditions.
Refers to a measure being installed at the time of planned investment in new equipment or
systems. Often this reflects either new construction, renovation, remodeling, planned
expansion or replacement, or replacement of failure.
A product (a piece of equipment), combination of products, or process designed to provide
energy and/or demand savings. Measure can also refer to a service or a practice that
provides savings. Measure can also refer to a specific combination of technology and
market/customer/practice/strategy (e.g., direct install low income CFL).
The final value of savings that is attributable to a program or measure. Net savings differs
from gross savings (or adjusted gross savings) because it includes adjustments due to freeridership and/or spillover. Net savings is sometimes referred to as "verified” or “final”
savings. For more detail see the section on Impact Factors for Calculating Adjusted
Gross and Net Savings.
The ratio of net savings to the adjusted gross savings (for a measure or program). The
adjusted gross savings include any adjustment by the impact factors other than freeridership or spillover. Net-to-gross is usually expressed as a percent.
Quantifiable benefits (beyond electric savings) that are the result of the installation of a
measure. Fossil fuel, water, and maintenance are examples of non-electric benefits. Nonelectric benefits can be negative (i.e. increased maintenance or increased fossil fuel usage
which results from a measure) and therefore are sometimes referred to as “non-electric
impacts”.
A customer who is eligible to participate in a program, but does not. A non-participant may
install a measure because of a program, but the installation of the measure is not through
regular program channels; as a result, their actions are normally only detected through
evaluations.
See Summer/Winter On-peak kW
Hours that a piece of equipment is expected to be in operation, not necessarily at full load
(typically expressed per year).
A customer who installs a measure through regular program channels and receives any
benefit (i.e. incentive) that is available through the program because of their participation.
Free-riders are a subset of this group.
A prescriptive measure is generally offered by use of a prescriptive form with a prescribed
incentive based on the parameters of the efficient equipment or practice.
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Rhode Island TRM
TERM
Realization Rate
(RR)
Retrofit
Savings Persistence
Factor (SPF)
Seasonal Energy
Efficiency Ratio
(SEER)
Sector
Spillover Rate
Summer/Winter
On-Peak kW
Ton
Watt
November 2011
Appendices
DESCRIPTION
The ratio of measure savings developed from impact evaluations to the estimated measure
savings derived from the TRM savings algorithms. This factor is used to adjust the
estimated savings when significant justification for such adjustment exists. The components
of the realization rate are described in detail in the section on Impact Factors.
The replacement of a piece of equipment or device before the end of its useful or planned
life for the purpose of achieving energy savings. "Retrofit" measures are sometimes
referred to as "early retirement" when the removal of the old equipment is aggressively
pursued.
Percentage of first-year energy or demand savings expected to persist over the life of the
installed energy efficiency equipment. The SPF is developed by conducting surveys of
installed equipment several years after installation to determine the operational capability of
the equipment. In contrast, measure persistence takes into account business turnover, early
retirement of installed equipment, and other reasons the installed equipment might be
removed or discontinued. Measure persistence is generally incorporated as part of the
measure life, and therefore is not included as a separate impact factor.
A measurement of the efficiency of a central air conditioner over an entire season. In
technical terms, SEER is a measure of equipment the total cooling of a central air
conditioner or heat pump (in Btu) during the normal cooling season as compared to the total
electric energy input (in watt-hours) consumed during the same period.
A system for grouping customers with similar characteristics. For the purpose of this
manual, the sectors are Commercial and Industrial (C&I), Small Business, Residential, and
Low Income.
The percentage of savings attributable to the program, but additional to the gross (tracked)
savings of a program. Spillover includes the effects of (a) participants in the program who
install additional energy efficient measures outside of the program as a result of hearing
about the program and (b) non-participants who install or influence the installation of
energy efficient measures as a result of being aware of the program.
The average demand reduction during the summer/winter on-peak period. The summer onpeak period is 1pm-5pm on non-holiday weekdays in June, July and August; the winter onpeak period is 5pm-7pm on non-holiday weekdays in December and January.
Unit of measure for determining cooling capacity. One ton equals 12,000 Btu.
A unit of electrical power. Equal to 1/1000 of a kilowatt.
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