Statewide BIP Evaluation Ex Post

Mar 20, 2012

Each of California’s three major investor-owned utilities, Pacific Gas and Electric (PG&E), Southern California Edison (SCE) and San Diego Gas & Electric (SDG&E), offer the Base Interruptible Program (BIP). Although minor differences in the tariffs exist across the three utilities, for all three, BIP is a tariff based, emergency-triggered demand response (DR) program that the utilities can dispatch for California Independent System Operator (CAISO) system emergencies and local emergencies. Customers enrolled in BIP receive incentive payments in exchange for committing to reduce their electrical usage to a contractually-established level referred to as the Firm Service Level (FSL). Participants who fail to reduce load down to or below their FSL are subject to a substantial financial penalty assessed on a kWh basis. As of the end of 2011, enrollment in BIP equaled 663 accounts for SCE, 227 accounts for PG&E and 21 accounts for SDG&E.

This report documents the 2011 ex post load impact estimates associated with BIP for all three of California’s major investor-owned utilities. This report does not contain ex ante load impact estimates because a final decision regarding the 2012-2014 demand response applications has not been issued. Ex ante impact estimates will be developed following the Commission’s final decision regarding the DR Program applications.