Power plants operated by Southern California Edison Co
Southern California Edison Co operates 41 power plants in the 2025 EIA-860 data, with 2,827 MW of nameplate capacity, the 83rd-largest fleet among the 5,826 operators on file. All of them are in California. Natural gas is 45% of the capacity; the largest site is Mountainview Generating Station. Its oldest working unit dates from 1899, at Santa Ana 1. Units added from 2020 to 2025 total 320 MW.
- Natural gas1,286 MW45%
- Hydroelectric963 MW34%
- Battery storage362 MW13%
- Pumped-storage hydro200 MW7.1%
- Oil and petroleum11.7 MW0.4%
- Solar5 MW0.2%
Capacity by decade it came online
Natural gasOil and petroleumHydroelectricPumped-storage hydroSolarBattery storage
Above the line: capacity operating in 2025. Below: capacity retired at these plants.
Plants
| Plant | State | Runs on | Capacity | First unit |
|---|---|---|---|---|
| Mountainview Generating Station | California | Natural gas | 1,037 MW | 2005 |
| Cathode (Hinson) BESS | California | Battery storage | 200 MW | 2024 |
| J S Eastwood | California | Pumped-storage hydro | 200 MW | 1987 |
| Mammoth Pool | California | Hydroelectric | 190 MW | 1960 |
| Big Creek 3 | California | Hydroelectric | 174 MW | 1923 |
| Separator (Etiwanda) BESS | California | Battery storage | 112 MW | 2024 |
| Big Creek 2A | California | Hydroelectric | 110 MW | 1928 |
| Big Creek 4 | California | Hydroelectric | 100 MW | 1951 |
| Big Creek 1 | California | Hydroelectric | 88.4 MW | 1913 |
| Big Creek 8 | California | Hydroelectric | 75 MW | 1921 |
| Big Creek 2 | California | Hydroelectric | 66.6 MW | 1913 |
| Center Hybrid | California | Natural gas | 59.8 MW | 2007 |
| Grapeland Hybrid | California | Natural gas | 59.8 MW | 2007 |
| Barre Peaker | California | Natural gas | 49.8 MW | 2007 |
| McGrath Peaker | California | Natural gas | 49.8 MW | 2012 |
| Mira Loma Peaker | California | Natural gas | 49.8 MW | 2007 |
| Kern River 3 | California | Hydroelectric | 40.3 MW | 1921 |
| Kern River 1 | California | Hydroelectric | 26.4 MW | 1907 |
| Mira Loma Energy Storage Facility | California | Battery storage | 20 MW | 2016 |
| Rush Creek | California | Hydroelectric | 13.1 MW | 1916 |
| Pebbly Beach Generating Station Hybrid | California | Oil and petroleum | 12.7 MW | 1958 |
| Poole | California | Hydroelectric | 11.3 MW | 1924 |
| Portal | California | Hydroelectric | 10.8 MW | 1956 |
| Bishop Creek 3 | California | Hydroelectric | 8.4 MW | 1913 |
| Bishop Creek 4 | California | Hydroelectric | 8.2 MW | 1905 |
| Bishop Creek 2 | California | Hydroelectric | 7.3 MW | 1908 |
| Solar Photovoltaic Project #42 | California | Solar | 5 MW | 2012 |
| Kaweah 3 | California | Hydroelectric | 4.8 MW | 1913 |
| Bishop Creek 5 | California | Hydroelectric | 4.5 MW | 1919 |
| Cadillac Battery Energy Storage Facility | California | Battery storage | 3.5 MW | 2024 |
| Yorktown Battery Energy Storage Facility | California | Battery storage | 3.5 MW | 2024 |
| Santa Ana 1 | California | Hydroelectric | 3.2 MW | 1899 |
| Santa Ana 3 | California | Hydroelectric | 3.1 MW | 1999 |
| Fontana | California | Hydroelectric | 3 MW | 1917 |
| Lundy | California | Hydroelectric | 3 MW | 1911 |
| Mill Creek 3 | California | Hydroelectric | 3 MW | 1903 |
| Lower Tule River | California | Hydroelectric | 2.6 MW | 1909 |
| Kaweah 1 | California | Hydroelectric | 2.3 MW | 1929 |
| Kaweah 2 | California | Hydroelectric | 1.8 MW | 1929 |
| Bishop Creek 6 | California | Hydroelectric | 1.6 MW | 1913 |
| DESI-2 Battery Storage Facility | California | Battery storage | 1.4 MW | 2019 |