Energy in California

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California's peak electricity demand occurred on July 24, 2006, at 2:44 pm, 50,270 Megawatts. Since then measures to reduce peak load have resulted in decreased peak demand. In 2011, the peak load was 45,545 MW, on September 7.[1] By 2020 California is required to obtain at least 33% of electricity from renewable sources other than large hydro.[2] The legislature is considering new regulations in 2013 which would compel utilities to invest in energy storage technology, the first such legislation in the United States.[3]

In-State Electricity Source Percentages[4]
Year Wind Solar Small hydro Geothermal Biomass Large hydro Coal Nuclear Natural gas
2011 3.8% 0.53% 3.1% 6.3% 2.9% 18.3% 1.6% 18.3% 45.3%

29.7% of electricity was imported, and of that, 38.7% was of unspecified origin.

Total Electricity Source Percentages[4]
Year Wind Solar Small hydro Geothermal Biomass Large hydro Coal Nuclear Natural gas Unspecified Renewables
2011 5.1% 0.43% 2.2% 4.7% 2.2% 13.4% 8.4% 15.7% 36.5% 11.5% 14.5%

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