Aggregators supply nearly one-quarter of regulated load in California

S&P Global

California’s cities and counties are at the center of a sweeping local takeover of power procurement as the world’s fifth-largest economy strives to decarbonize its electric system.

Formed in recent years by more than 130 cities, counties and towns, 19 local government-run agencies known as community choice aggregators, or CCAs, now purchase electricity for about 10 million Californians, roughly a quarter of the state’s population, according to the California Community Choice Association.

Ten of these aggregators emerged in 2018 alone in a mass defection that predominantly hit Pacific Gas and Electric Co., or PG&E, and Southern California Edison Co. Propelled by communities’ desire for a faster energy transition and by a state law that requires automatic customer enrollment when local governments form CCAs, more migration is in progress.

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