Fuel type

Hydroelectric power plants in the United States

1,432 hydroelectric facilities totaling 102.26 GW of nameplate capacity. Washington leads with 21.72 GW across 75 plants.

1,432
Plants nationwide
102.26 GW
Total capacity
71.4 MW
Average plant size
Washington
Top state by capacity

Hydroelectric capacity by state

Washington75 · 21.72 GWCalifornia244 · 13.72 GWOregon63 · 8.36 GWNew York165 · 5.92 GWSouth Carolina32 · 4.39 GWTennessee29 · 4.22 GWVirginia24 · 3.93 GWGeorgia30 · 3.60 GWAlabama23 · 3.32 GWArizona11 · 2.91 GWIdaho76 · 2.70 GWMontana23 · 2.68 GWPennsylvania19 · 2.43 GWMichigan50 · 2.33 GWMassachusetts31 · 2.10 GWNorth Carolina38 · 1.96 GWSouth Dakota4 · 1.65 GWArkansas19 · 1.35 GWColorado49 · 1.19 GWMissouri8 · 1.11 GWKentucky11 · 1.10 GWOklahoma11 · 1.08 GWNevada6 · 1.05 GWTexas24 · 736.5 MWMaine48 · 700.3 MWNorth Dakota1 · 583.4 MWMaryland2 · 550.8 MWNew Hampshire32 · 530.3 MWWisconsin61 · 522.1 MWAlaska28 · 476.4 MWNew Jersey3 · 467.7 MWWest Virginia12 · 370.6 MWVermont46 · 335.6 MWNebraska9 · 329.7 MWWyoming16 · 303.4 MWUtah29 · 264.7 MWMinnesota22 · 212 MWLouisiana1 · 192 MWIowa4 · 184.4 MWConnecticut13 · 144.5 MWOhio5 · 128.6 MWIndiana6 · 107.5 MWPuerto Rico6 · 96.7 MWNew Mexico4 · 81.5 MWFlorida1 · 43.5 MWIllinois7 · 34.7 MWHawaii8 · 34.6 MWKansas1 · 7 MWRhode Island2 · 2.8 MW

Largest hydroelectric plants

PlantFuelStateOwnerCapacity
Grand CouleeHydroelectricWashingtonU S Bureau of Reclamation6.81 GW
Bath CountyHydroelectricVirginiaVirginia Electric & Power Co2.86 GW
Chief JosephHydroelectricWashingtonUSACE Northwestern Division2.46 GW
Robert Moses NiagaraHydroelectricNew YorkNew York Power Authority2.43 GW
John DayHydroelectricOregonUSACE Northwestern Division2.16 GW
LudingtonHydroelectricMichiganConsumers Energy Co - (MI)1.98 GW
The DallesHydroelectricOregonUSACE Northwestern Division1.82 GW
Raccoon MountainHydroelectricTennesseeTennessee Valley Authority1.71 GW
CastaicHydroelectricCaliforniaLos Angeles Department of Water & Power1.68 GW
Bad CreekHydroelectricSouth CarolinaDuke Energy Carolinas, LLC1.68 GW
Glen Canyon DamHydroelectricArizonaU S Bureau of Reclamation1.31 GW
Rocky ReachHydroelectricWashingtonPUD No 1 of Chelan County1.30 GW
WanapumHydroelectricWashingtonPUD No 2 of Grant County1.22 GW
Northfield MountainHydroelectricMassachusettsFirstLight Power Resources, Inc. - MA1.17 GW
BonnevilleHydroelectricOregonUSACE Northwestern Division1.16 GW
BoundaryHydroelectricWashingtonCity of Seattle - (WA)1.16 GW
Muddy RunHydroelectricPennsylvaniaConstellation Power, Inc1.07 GW
Helms Pumped StorageHydroelectricCaliforniaPacific Gas & Electric Co.1.05 GW
Hoover Dam (AZ)HydroelectricArizonaU S Bureau of Reclamation1.04 GW
Hoover Dam (NV)HydroelectricNevadaU S Bureau of Reclamation1.04 GW
Blenheim GilboaHydroelectricNew YorkNew York Power Authority1.00 GW
McNaryHydroelectricOregonUSACE Northwestern Division990.5 MW
Priest RapidsHydroelectricWashingtonPUD No 2 of Grant County950 MW
Robert Moses Power DamHydroelectricNew YorkNew York Power Authority912 MW
WellsHydroelectricWashingtonPUD No 1 of Douglas County855.2 MW