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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)

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Non-Weather Sensitive Residential Measures Include:

CFL Lighting

Refrigerators

Clothes Washers & Dryers

Dishwashers

Water Heating

Swimming Pool Pumps

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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

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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 heaterLow flow showerhead (from 2.5 to 2.0 gallons per minute)Pipe wrapFaucet aerators

Savings expressed as % of base useBase use varied by utility service area (same method as 2001)

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Non-Weather Sensitive Non-Res. Measure Groups

Interior Lighting

Exterior Lighting

Cooking

Copy Machine

Water Heating

Vending Machine Controls

High Efficiency Motors

Agriculture

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Non-Weather Sensitive Non-Res. Measures

Interior Lighting Group:CFL screw-in lampsCFL hardwire fixturesHigh intensity discharge (HID) lampsPremium T8 lampsDimming BallastsDe-lamping fluorescent 4 ft and 8 ft fixtures

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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

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Weather Sensitive MeasuresMethods 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).

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Weather Sensitive MeasuresCalibration

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

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Weather Sensitive MeasuresSimulation cases

Base case

• Vintage typical base on survey data

Code base Case

• Minimally compliant or standard practice

Measure Case

• Most common program tier's

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Overview of 2001-2005 Data Changes

The scope of some measures has been expanded• CFL size categories expanded• More evaporative cooler options• Windows expanded to include non-res. high performance glazing

Several measures eliminated or reduced in scope• 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

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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

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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

Cost Data Defining Cost Parameters

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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

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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)

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Website Navigation – Opening Screen

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Website Navigation – Browse Measures

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Website Navigation – Select Subcategory

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Website Navigation – Review Summary Page - Top

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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

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Website Navigation – Review Summary Page - Bottom

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Website Navigation – Detailed Measure Information

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Website Navigation – Detailed Measure information - Top

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Website Navigation – Detailed Measure information - Bottom

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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