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]
In-State Electricity Source Percentages[3]
| 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[3]
| 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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