Largest hydroelectric power plants in CAISO
Conventional and pumped-storage hydroelectric plants ranked by EIA-reported nameplate capacity. Rankings use EIA-anchored plant records in CAISO.
- Plants
- 171
- EIA nameplate capacity
- 8.5 GW
- Largest
- 1,053 MW
Ranked operating records
Sum across this peer set
Helms Pumped Storage
Hydroelectric capacity ranking
171 matching plants·ranked by nameplate capacity
| Rank | Plant | Capacity | ||||
|---|---|---|---|---|---|---|
| 151 | Rio HondoMetropolitan Water District of S CA | 1.9 MW | Conventional Hydroelectric | Metropolitan Water District of S CA | Los Angeles County | |
| 152 | Bidwell Ditch ProjectMega Renewables | 1.8 MW | Conventional Hydroelectric | Mega Renewables | Shasta County | |
| 153 | Kaweah 2Southern California Edison Co | 1.8 MW | Conventional Hydroelectric | Southern California Edison Co | Tulare County | |
| 154 | ToadtownPacific Gas & Electric Co. | 1.8 MW | Conventional Hydroelectric | Pacific Gas & Electric Co. | Butte County | |
| 155 | Bishop Creek 6Southern California Edison Co | 1.6 MW | Conventional Hydroelectric | Southern California Edison Co | Inyo County | |
| 156 | PhoenixPacific Gas & Electric Co. | 1.6 MW | Conventional Hydroelectric | Pacific Gas & Electric Co. | Tuolumne County | |
| 157 | Baker Creek HydroelectricBaker Station Associates, LP | 1.5 MW | Conventional Hydroelectric | Baker Station Associates, LP | Humboldt County | |
| 158 | Combie SouthNevada Irrigation District | 1.5 MW | Conventional Hydroelectric | Nevada Irrigation District | Nevada County | |
| 159 | AngelsUtica Water & Power Authority | 1.4 MW | Conventional Hydroelectric | Utica Water & Power Authority | Calaveras County | |
| 160 | Bear ValleyCity of Escondido - (CA) | 1.4 MW | Conventional Hydroelectric | City of Escondido - (CA) | San Diego County | |
| 161 | Santa Felicia DamUnited Water Conservation District | 1.3 MW | Conventional Hydroelectric | United Water Conservation District | Ventura County | |
| 162 | Three Forks Water Power ProjectGrizzly Mountain Ranch | 1.3 MW | Conventional Hydroelectric | Grizzly Mountain Ranch | Trinity County | |
| 163 | East Portal GeneratorCalleguas Mun Water District | 1.2 MW | Conventional Hydroelectric | Calleguas Mun Water District | Los Angeles County | |
| 164 | Nelson CreekNelson Creek Power Inc | 1.2 MW | Conventional Hydroelectric | Nelson Creek Power Inc | Shasta County | |
| 165 | Lost Creek ISnow Mountain Hydro LLC | 1.1 MW | Conventional Hydroelectric | Snow Mountain Hydro LLC | Shasta County | |
| 166 | Ponderosa Bailey CreekSnow Mountain Hydro LLC | 1.1 MW | Conventional Hydroelectric | Snow Mountain Hydro LLC | Tehama County | |
| 167 | Alta PowerhousePacific Gas & Electric Co. | 1 MW | Conventional Hydroelectric | Pacific Gas & Electric Co. | Placer County | |
| 168 | Scott FlatNevada Irrigation District | 1 MW | Conventional Hydroelectric | Nevada Irrigation District | Nevada County | |
| 169 | Springville HydroelectricCalleguas Mun Water District | 1 MW | Conventional Hydroelectric | Calleguas Mun Water District | Ventura County | |
| 170 | Volta 2Pacific Gas & Electric Co. | 1 MW | Conventional Hydroelectric | Pacific Gas & Electric Co. | Shasta County | |
| 171 | Waterman Turnout HydroelectricSan Bernardino Valley Mun. Water Dist. | 1 MW | Conventional Hydroelectric | San Bernardino Valley Mun. Water Dist. | San Bernardino County |
Capacity is EIA-reported nameplate capacity, not seasonal capability or available operating capacity. A plant can include multiple generators and technologies; hybrid plants may appear in multiple peer groups.