What is DEER?

What is DEER?
Database for Energy Efficient Resources -A
listing of residential and non-residential
energy efficiency measures located at:
DEER provides measure and building
 Ex ante savings values: kW, kWh, kBtu;
 Measure costs; and
 Effective measure life (EUL)
Non-Weather Sensitive Residential
Measures Include:
 CFL Lighting
 Refrigerators
 Clothes Washers & Dryers
 Dishwashers
 Water Heating
 Swimming Pool Pumps
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
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)
Non-Weather Sensitive Non-Res.
Measure Groups
 Interior Lighting
 Exterior Lighting
 Cooking
 Copy Machine
 Water Heating
 Vending Machine Controls
 High Efficiency Motors
 Agriculture
Non-Weather Sensitive Non-Res.
 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
Non-Weather Sensitive Non-Res.
 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
Weather Sensitive Measures
Methods Used
Employed DOE-2/eQUEST heat load simulation
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).
Weather Sensitive Measures
Residential Appliance Saturation Survey (RASS)
used to calibrate end-use values
Adjustments both at “activity area” and whole
building level using preliminary Commercial Energy
Use Survey (CEUS) values and values from EM&V
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
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
Low flow showerheads
AC units
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
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 $13.65 for all 90% residential
• This provides an average cost based on a 100,000 Btu furnace
• The ‘Cost Data’ file under ‘Supporting Documents’
provides prices on a range of furnace sizes
• This provides a range of costs for 90% AFUE furnaces from
60,000 Btu to 140,000 Btu. Per unit costs ($/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
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
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)
Website Navigation – Opening
Website Navigation – Browse
Website Navigation – Select
Website Navigation – Review
Summary Page - Top
Website Navigation –Summary Page
 Area #1 - Summary Identification of 13
 Area #2 – Further Filtering Options
Climate Zone, Building Type, Vintage, Savings
Area #3 – Sorting Order
 Area #4 – Download Measure Detail in
Website Navigation – Review
Summary Page - Bottom
Website Navigation – Detailed
Measure Information
Website Navigation – Detailed
Measure information - Top
Website Navigation – Detailed
Measure information - Bottom
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
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