What is DEER?
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A collection of data for Residential and
Non-Residential energy efficiency
measures.
It provides a common set of:
 Ex ante Savings values: kW, kWh, kBtu;
 Measure Costs; and
 Effective Measure Life (a.k.a EUL)
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Previous DEER Database
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Savings estimates and cost estimates were
never integrated
Database on hard copy and soft copy
Commercial measures savings had not been
updated since 1994
Residential measures savings more recently
in 2001
No information on EULs
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DEER Update
Completed on-line DEER version 2.0 on August
31, 2005
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Supercedes March 2005 DEER version 1.0
Revised non-weather sensitive data
Added new and updated weather sensitive
measures
Added Agricultural measures
Integrated new effective useful life estimates
Completed integration of cost data
Updated the website with the new information
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Website Considerations
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Two Levels of Savings
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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
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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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Planning for DEER Updates
and Linkages to EM&V
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Objectives
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Approach
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ID and discuss DEER-related Issues
ID and discuss DEER-related EM&V needs
Recommendations for future DEER updates
Recommendations for improved EM&V-DEER linkages
Interviews with Joint Staff, IOUs, others
Review of EM&V studies and plans
Lessons learned from current and past studies
Deliverables
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Report/chapter on issues and recommendations
Prioritized list of detailed measurement needs
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Key Update Issues
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Guidelines/Requirements for DEER Use
DEER Update Process
Energy Savings Methods and Sources
Baseline Calibration and Load Shapes
Segmentation and Averaging
Costing Issues
Types of Data to Include
Measure Coverage and Allocation of Resources
Measure-specific and EM&V Linkage Issues
Documentation
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DEER Update Process
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Most suggest DEER be preferred (default) source of
program planning data, some JS prefer mandatory
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Comprehensively updated at least every three years
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Deviations permitted if data not available in DEER
If data in DEER, demonstrate why alternate data superior
If not in DEER, increased regulatory review, higher likelihood of
ex post measurement of savings
Process put in place to allow updates to specific values to occur
more often (every year or half year) – Start Jan. ‘06
Next comprehensive update should be completed by end of ‘07
Update based on availability of superior information
Strive for expected value orientation
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Neither conservative nor optimistic…
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But lean conservative in face of great uncertainty and risk
Involve diverse group of experts
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