2012 Load Impact Evaluation of San Diego Gas & Electric’s Residential Peak Time Rebate Program

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April 1, 2013 - Dan Hansen

This report documents the ex post and ex ante load impact evaluations of San Diego Gas & Electric’s (SDG&E) 2012 Peak Time Rebate (PTR) program. In 2012, all SDG&E residential customers were automatically enrolled in PTR. SDG&E arranged for day-ahead public announcements (e.g., through radio and TV news, and weather features) of PTR events (which are also referred to as “Reduce Your Use” days), and all customers have the opportunity to earn bill credits for usage reductions during event hours. Customers are also encouraged to sign up to receive electronic notification, or alerts, of events through email or text messages (or both). The primary goals of the project are to estimate ex post and ex ante load impacts, or usage reductions, associated with the overall PTR program. In addition, the ex post evaluation is required to estimate event-day usage reductions for a range of subgroups of PTR participants, such as by climate zone, and by customers who requested electronic notification of events. The ex post evaluation also includes an analysis of the performance of the program’s customer-specific reference level (CRL), which is used in settlement to estimate customers’ usage reductions during event hours for purposes of calculating bill credits.

Citation & Download

Steve Braithwait, Dan Hansen, Marlies Hilbrink, 2012 Load Impact Evaluation of San Diego Gas & Electric’s Residential Peak Time Rebate Program, CALMAC Study ID SDG0266.01, April 1, 2013.