1 What is DEER?  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)

2 Previous DEER Database  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

3 DEER Update Completed on-line DEER version 2.0 on August 31, 2005 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

4 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

5 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)

6 Website Navigation – Opening Screen

7 Planning for DEER Updates and Linkages to EM&V Objectives 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 Approach Interviews with Joint Staff, IOUs, others Review of EM&V studies and plans Lessons learned from current and past studies Deliverables Report/chapter on issues and recommendations Prioritized list of detailed measurement needs

8 Key Update Issues 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

9 DEER Update Process Most suggest DEER be preferred (default) source of program planning data, some JS prefer mandatory 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 Comprehensively updated at least every three years 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 Neither conservative nor optimistic… But lean conservative in face of great uncertainty and risk Involve diverse group of experts