What is DEER?

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What is DEER?


Database for Energy Efficient Resources -A
listing of residential and non-residential
energy efficiency measures located at:
http://eega.cpuc.ca.gov/deer/
DEER provides measure and building
specific:
 Ex ante savings values: kW, kWh, kBtu;
 Measure costs; and
 Effective measure life (EUL)
1
Non-Weather Sensitive Residential
Measures Include:
 CFL Lighting
 Refrigerators
 Clothes Washers & Dryers
 Dishwashers
 Water Heating
 Swimming Pool Pumps
2
Non-Weather Sensitive Res. Measures
Residential CFL Savings
CFL savings impact =
(delta watts/unit * hours/day * days/year * In Service Rate) / 1000 watts/kWh
CFL demand impact =
delta watts/unit * In Service Rate * Peak Hour Load Share
The “In Service Factor” is an estimate of the percentage of lamps that are actually used. “Hours of
Operation/Day” and “Peak Hour Load Share” from KEMA CFL Metering Study.
For example (14W CFL replace 60W Inc):
CFL savings impact = 35.4 kWh
(46W * 2.34 hours/day * 365 days/year * 0.9) / 1000 watts/kWh
CFL demand impact = 3.35 W
46W * 0.9 * 0.081
3
Non-Weather Sensitive Res. Measures
Residential Water Heating Measures
High efficiency water heater (electric EF=0.93, gas EF=0.63)
Heat pump water heater (EF=2.9)
Point of use water heater
Low flow showerhead (from 2.5 to 2.0 gallons per minute)
Pipe wrap
Faucet aerators
Savings expressed as % of base use
Base use varied by utility service area (same method as 2001)
4
Non-Weather Sensitive Non-Res.
Measure Groups
 Interior Lighting
 Exterior Lighting
 Cooking
 Copy Machine
 Water Heating
 Vending Machine Controls
 High Efficiency Motors
 Agriculture
5
Non-Weather Sensitive Non-Res.
Measures
 Interior Lighting Group:
CFL screw-in lamps
CFL hardwire fixtures
High intensity discharge (HID) lamps
Premium T8 lamps
Dimming Ballasts
De-lamping fluorescent 4 ft and 8 ft fixtures
6
Non-Weather Sensitive Non-Res.
Measures
 Exterior Lighting & Exit Signs Methods
HID lamps: delta watts saved * hours of use (4,100 hours)
no peak impacts
Exit Signs: delta watts saved * 8760 hours * Interactive Effects
peak = delta watts * Interactive effects * 1.0 (coincidence factor)
Timeclocks & Photocells: watts controlled * hours of control
no peak impacts
7
Weather Sensitive Measures
Methods Used


Employed DOE-2/eQUEST heat load simulation
model
•
Hourly simulation of all elements
•
Includes details of configurations
Measures include high efficiency AC, furnaces,
controls, shell measures, and maintenance (for
single family, multi family, mobile homes and 22
non-res. building types, in each of 5 building
vintages, for 16 climate zones).
8
Weather Sensitive Measures
Calibration

Residential
•

Residential Appliance Saturation Survey (RASS)
used to calibrate end-use values
Non-residential
•
Adjustments both at “activity area” and whole
building level using preliminary Commercial Energy
Use Survey (CEUS) values and values from EM&V
studies
9
Weather Sensitive Measures
Simulation cases

Base case
•

Vintage typical base on survey data
Code base Case
•

Minimally compliant or standard practice
Measure Case
•
Most common program tier's
10
Overview of 2001-2005 Data Changes

The scope of some measures has been expanded
•
•
•

Several measures eliminated or reduced in scope
•
•

CFL size categories expanded
More evaporative cooler options
Windows expanded to include non-res. high performance glazing
Most T8 systems eliminated with the exception of premium efficiency and
dimming T8 ballasts
Eliminated coin-operated high efficiency clothes washers and hot water heater
tank wrap
Major changes in savings for some measures
•
•
•
•
Programmable thermostats
CFLs
Low flow showerheads
AC units
11
Defining Measure Cost Parameters





Measure costs specifications encompass the sizes and
technical specs of measures used in the energy analysis, but
reflect availability of products on the market
Cost data is first cost only -- life cycle or O&M costs/cost
savings not included
Some price observations (outliers) excluded; rational
purchasing policy assumed (“who would pay THAT?”)
Equipment and labor prices are specific to California to extent
possible (average across state)
Cost units ($ / ton, $ / HP, $ / square foot, etc.)
• Mostly the same although different for some measures
• Distinct field in detailed cost data; appended to Cost Basis
designator in measure detail
12
Cost Data
Defining Cost Parameters
 How to find the most applicable cost information?
• Measure detail pages for each run ID - the per unit
equipment measure cost of $13.65 for all 90% residential
furnaces
• This provides an average cost based on a 100,000 Btu furnace
• The ‘Cost Data’ file under ‘Supporting Documents’
provides prices on a range of furnace sizes
• This provides a range of costs for 90% AFUE furnaces from
60,000 Btu to 140,000 Btu. Per unit costs ($/KBtu) ranges from
$21.53 to $12.13, respectively
• The cost workbook section – Can use either statistical
summary or individual price observations
• For example, the per unit equipment measure cost for 90%
AFUE 100,000 furnaces ranges from to $12.31 to $16.52 based
on 9 observations
13
Website Considerations

Two Levels of Savings



Customer savings - for system savings and early
replacement savings.
“Above Code” Savings - for all measures affected
by an energy code or standard (reportable
savings for replace on burnout.)
Common Units



The energy and cost common units are distinct
Over 90% of cases, they are the same
When different, distinctly identified
14
Website Considerations
 Application – indicates if the cost is for:
• Retrofit (RET) - replacing a working system with a new
technology or adding a technology.
• Replace-on-burnout (ROB) - replacing a technology at the
end of its useful life
• New construction or major renovation (NEW) - installing a
technology in a new construction or major renovation
 Cost Basis – indicates if the cost is:
• Incremental (INCR) - the differential cost between a base
technology and an energy efficient technology
• Installed (FULL) - the full or installed cost of the measure
including equipment, labor, overhead & profit (OH&P)
15
Website Navigation – Opening
Screen
16
Website Navigation – Browse
Measures
17
Website Navigation – Select
Subcategory
18
Website Navigation – Review
Summary Page - Top
19
Website Navigation –Summary Page
Information
 Area #1 - Summary Identification of 13
variables
 Area #2 – Further Filtering Options

Climate Zone, Building Type, Vintage, Savings
Unit
Area #3 – Sorting Order
 Area #4 – Download Measure Detail in
Excel

20
Website Navigation – Review
Summary Page - Bottom
21
Website Navigation – Detailed
Measure Information
22
Website Navigation – Detailed
Measure information - Top
23
Website Navigation – Detailed
Measure information - Bottom
24
Supporting Documents Section
 Website Users Guide
 Net-to-Gross Ratios Table (if in doubt use .8)
 Access Tables
 Glossary
 Cost Data
 Cost Data User’s Guide
 New EUL Estimates (7-14-05 SERA Report)
 Consolidated Measure Data
25
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