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California Power Plants
Utility-scale generators of 1 megawatt or more in California, as of August 2026 (EIA-860M).
- Operating capacity
- 109.6 GW
- Largest plant
- Diablo Canyon
- 2.3 GW
- Planned through 2028
- 18.3 GW
- Generation, 2023
- 216.1 TWh
Capacity by fuel
Operating nameplate capacity
- Natural gas40.3 GW 36.8%
- Solar25.5 GW 23.3%
- Battery storage16.3 GW 14.9%
- Hydroelectric10.0 GW 9.2%
- Wind6.5 GW 5.9%
- Pumped storage hydro3.7 GW 3.4%
- Geothermal2.9 GW 2.7%
- Nuclear2.3 GW 2.1%
- Biomass1.1 GW 1.0%
- Petroleum551 MW 0.5%
- Other279 MW 0.3%
- Coal62.5 MW 0.1%
Electricity generated, 2023
Net generation by fuel from EPA eGRID. CO2 output rate 393 lb/MWh
- Natural gas94.3 TWh 43.7%
- Solar40.6 TWh 18.8%
- Hydroelectric32.0 TWh 14.8%
- Nuclear17.7 TWh 8.2%
- Wind14.0 TWh 6.5%
- Geothermal11.3 TWh 5.2%
- Biomass5.0 TWh 2.3%
- Other893 GWh 0.4%
- Coal209 GWh 0.1%
- Petroleum73 GWh 0.0%
Largest power plants
Top 150 by operating capacity. See counties below for every plant
Swipe the table sideways to see more columns.
Planned and under construction
Largest planned additions, including expansions of operating plants
Swipe the table sideways to see more columns.
| Plant | Planned | Operating now |
|---|---|---|
| Easley SolarRiverside | 590 MW | 350 MW |
| SE Athos II, LLCRiverside | 402 MW | 200 MW |
| El Centro HybridImperial | 113 MW | 388 MW |
| Dynegy Oakland Power PlantAlameda | 43.3 MW | 149 MW |
| Pine FlatFresno | 3.8 MW | 165 MW |
Power plants by county
Operating plants located in each county
- Alameda County31
- Amador County7
- Butte County20
- Calaveras County5
- Colusa County4
- Contra Costa County40
- El Dorado County15
- Fresno County103
- Glenn County2
- Humboldt County7
- Imperial County74
- Inyo County19
- Kern County266
- Kings County52
- Lake County6
- Lassen County6
- Los Angeles County254
- Madera County25
- Marin County3
- Mariposa County2
- Mendocino County4
- Merced County25
- Mono County9
- Monterey County26
- Napa County8
- Nevada County9
- Orange County44
- Placer County22
- Plumas County11
- Riverside County119
- Sacramento County62
- San Benito County5
- San Bernardino County130
- San Diego County105
- San Francisco County6
- San Joaquin County38
- San Luis Obispo County17
- San Mateo County8
- Santa Barbara County13
- Santa Clara County52
- Santa Cruz County4
- Shasta County38
- Sierra County2
- Siskiyou County3
- Solano County34
- Sonoma County22
- Stanislaus County21
- Sutter County9
- Tehama County6
- Trinity County5
- Tulare County68
- Tuolumne County18
- Ventura County25
- Yolo County13
- Yuba County4
Capacity is the nameplate rating of generators that are operating or on standby. Solar capacity is in alternating current (AC). Batteries are counted by power (MW), not by stored energy (MWh).
Frequently asked questions
- How much power plant capacity does California have?
- California has 109.6 GW of operating utility-scale capacity as of August 2026.
- What is the largest power plant in California?
- Diablo Canyon is the largest at 2.3 GW of nuclear capacity.
- Where does California get its electricity?
- Power plants in California generated 216.1 TWh in 2023. The mix is shown above. Power also flows between states, so what plants in a state generate is not the same as what its customers use.
Source: U.S. Energy Information Administration, Form EIA-860M; U.S. EPA eGRID · Data for August 2026