CleanPowerSF is the City and County of San Francisco's Community Choice Aggregation (CCA) program, whose purpose is to significantly increase the proportion of electrical energy supplied to the San Francisco electrical grid from local renewable sources, decrease San Francisco's greenhouse gas (GHG) emissions, and help combat global climate change,[2] while meeting or exceeding California's Renewable Portfolio Standard (RPS).

The RPS requires that 33% of energy supplied by "investor-owned utilities, electric service providers, and community choice aggregators" should be from eligible renewable sources by 2020.

[5] CleanPowerSF's 2007 Implementation Plan called for building 210 megawatts of in-city energy efficiency and new renewable generation capacity and a 150 megawatt regional wind facility within three years of the launch of the program, as well as achieving a 51 percent renewable energy portfolio within ten years.

SFPUC then entered into negotiations with SENA for a 4½-year non-exclusive contract to purchase 20-30 megawatts of 100 percent California-certified renewable energy.

Most prominently, IBEW Local 1245, which represents about 60 percent of PG&E employees,[12][13] funded a TV, radio, and web campaign in opposition to the program.

[15] These groups pointed out that CleanPowerSF will immediately begin lowering GHG emissions while also providing for numerous green jobs as the program's build-out transitions the city towards more and more locally produced clean energy—that transition itself being the means to making contracts with companies like Shell obsolete.