2009 Pacific Gas and Electric Company SmartAC Ancillary Services Pilot

In the summer of 2009, PG&E and Lawrence Berkeley National Laboratory (LBNL) implemented a pilot program designed to assess the feasibility of providing spinning and non-spinning reserves to the California Independent System Operator’s (CAISO’s) Ancillary Service (AS) market using PG&E’s SmartAC program, an air conditioner (AC) cycling or direct load control program. Spinning and non-spinning reserves are system resources designed to allow the system operator to rapidly balance supply and demand on the electric grid in case of forced outages occurring on the generation and transmission systems.

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