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
Ranked operating records
EIA nameplate capacity
8.5 GW
Sum across this peer set
Largest
1,053 MW
Helms Pumped Storage

Hydroelectric capacity ranking

171 matching plants·ranked by nameplate capacity

RankPlantCapacity
101Bishop Creek 4Southern California Edison Co8.2 MW
102PerrisMetropolitan Water District of S CA7.9 MW
103Bishop Creek 2Southern California Edison Co7.3 MW
104Sacramento Municipal Util DistSouth Sutter Water District7.2 MW
105Spaulding 1Pacific Gas & Electric Co.7 MW
106Hatchet Creek ProjectMega Renewables6.8 MW
107SouthPacific Gas & Electric Co.6.7 MW
108Spaulding 3Pacific Gas & Electric Co.6.6 MW
109Black ButteCity of Santa Clara - (CA)6.1 MW
110Oxbow (CA)Placer County Water Agency6.1 MW
111Spring GapPacific Gas & Electric Co.6 MW
112Red MountainMetropolitan Water District of S CA5.9 MW
113Spicer Meadow ProjectNorthern California Power Agny5.9 MW
114Deer Creek PHNevada Irrigation District5.5 MW
115Frankenheimer Power PlantTurlock Irrigation District5.3 MW
116Yorba LindaMetropolitan Water District of S CA5.1 MW
117Big Creek Water WorksBig Creek Water Works Ltd5 MW
118Cove HydroelectricSnow Mountain Hydro LLC5 MW
119OlsenOlsen Power Partners5 MW
120San Gabriel Hydro ProjectLos Angeles County-San Gabriel5 MW
121Stony GorgeCity of Santa Clara - (CA)5 MW
122Lake MathewsMetropolitan Water District of S CA4.9 MW
123Bishop Creek 5Southern California Edison Co4.5 MW
124Nacimiento Hydro ProjectMonterey Cnty Water Res Agency4.4 MW
125Valley ViewMetropolitan Water District of S CA4.1 MW
126Spaulding 2Pacific Gas & Electric Co.3.7 MW
127BowmanNevada Irrigation District3.6 MW
128MurphysUtica Water & Power Authority3.6 MW
129Lake MendocinoCity of Ukiah - (CA)3.5 MW
130Merced FallsMerced Irrigation District3.4 MW
131Thermalito Diverson DamCalifornia Dept. of Water Resources3.4 MW
132Bear Creek (CA)Central Rivers Power US, LLC3.2 MW
133Coyote CreekMetropolitan Water District of S CA3.1 MW
134AzusaCity of Pasadena - (CA)3 MW
135Burney CreekSnow Mountain Hydro LLC3 MW
136FontanaSouthern California Edison Co3 MW
137LundySouthern California Edison Co3 MW
138Mill Creek 3Southern California Edison Co3 MW
139New Hogan Power PlantModesto Irrigation District3 MW
140Rock Creek LPHydroland Omega LLC3 MW
141CoronaMetropolitan Water District of S CA2.9 MW
142Moccasin Low Head Hydro ProjectCity & County of San Francisco2.9 MW
143TemescalMetropolitan Water District of S CA2.9 MW
144ParkerMerced Irrigation District2.7 MW
145Warm Springs Hydro ProjectSonoma County Water Agency2.7 MW
146Montgomery Creek HydroCentral Rivers Power US, LLC2.6 MW
147Site 980 65Madera-Chowchilla Power Auth2.1 MW
148Deadwood CreekHydro Sierra Energy, LLC2 MW
149Gosselin Hydro PlantHumboldt Bay Mun Water Dist2 MW
150Roaring Creek Water PowerShasta Hydroelectric Inc2 MW

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.