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
51Butt ValleyPacific Gas & Electric Co.40 MW
52Friant Hydro FacilityFriant Power Authority37.5 MW
53CrestaPacific Gas & Electric Co.36.9 MW
54Bucks CreekPacific Gas & Electric Co.33 MW
55Mojave SiphonCalifornia Dept. of Water Resources32.7 MW
56Balch 1Pacific Gas & Electric Co.31 MW
57Big Creek 8Southern California Edison Co30 MW
58Muck Valley HydroelectricConventional Hydroelectric29.9 MW
59TullochOakdale&South San Joaquin Irrigation D.29.9 MW
60Diamond Valley LakeMetropolitan Water District of S CA29.7 MW
61Dutch Flat 2Nevada Irrigation District27.3 MW
62Kern River 1Southern California Edison Co26.4 MW
63ONeillU S Bureau of Reclamation25.2 MW
64EtiwandaMetropolitan Water District of S CA23.9 MW
65PardeeEast Bay Municipal Util Dist23.6 MW
66Dutch FlatPacific Gas & Electric Co.22 MW
67GrizzlyCity of Santa Clara - (CA)22 MW
68Terminus Hydroelectric ProjectEagle Creek Renewable Energy, LLC20.1 MW
69El DoradoEl Dorado Irrigation District20 MW
70AlamoCalifornia Dept. of Water Resources19.6 MW
71De SablaPacific Gas & Electric Co.18.4 MW
72WisePacific Gas & Electric Co.16.4 MW
73Sand Bar Power PlantTri-Dam Power Authority16.2 MW
74French MeadowsPlacer County Water Agency15.3 MW
75Forks of Butte Hydro ProjectHypower Energy, LLC14.5 MW
76HalseyPacific Gas & Electric Co.13.6 MW
77West Point PHPacific Gas & Electric Co.13.6 MW
78Rush CreekSouthern California Edison Co13.1 MW
79A G WishonPacific Gas & Electric Co.12.8 MW
80NewcastlePacific Gas & Electric Co.12.7 MW
81Coleman PHPacific Gas & Electric Co.12.1 MW
82RollinsNevada Irrigation District12.1 MW
83Sly CreekSouth Feather Water and Power Agency12.1 MW
84Isabella Hydro ProjectIsabella Partners11.8 MW
85Monticello DamSolano Irrigation District11.5 MW
86PooleSouthern California Edison Co11.3 MW
87CamancheEast Bay Municipal Util Dist10.8 MW
88PortalSouthern California Edison Co10.8 MW
89Narrows PHYuba County Water Agency10.2 MW
90BeardsleyOakdale&South San Joaquin Irrigation D.10 MW
91Hat Creek 1Pacific Gas & Electric Co.10 MW
92Hat Creek 2Pacific Gas & Electric Co.10 MW
93HaypressEIF Haypress LLC10 MW
94Kelly RidgeSouth Feather Water and Power Agency10 MW
95San DimasMetropolitan Water District of S CA9.9 MW
96Foothill FeederMetropolitan Water District of S CA9 MW
97McSwainMerced Irrigation District9 MW
98Volta 1Pacific Gas & Electric Co.8.5 MW
99Bishop Creek 3Southern California Edison Co8.4 MW
100Chili BarSacramento Municipal Util Dist8.3 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.