Washington · Hydroelectric

Hydroelectric power plants in Washington

There are 75 hydroelectric plants in Washington in this directory, with a combined nameplate capacity of 21.72 GW. The largest is Grand Coulee at 6.81 GW.

75
Plants
21.72 GW
Combined capacity
289.6 MW
Average plant size
1962
Avg. commissioning year
PlantFuelOwnerCapacity
Grand CouleeHydroelectricU S Bureau of Reclamation6.81 GW
Chief JosephHydroelectricUSACE Northwestern Division2.46 GW
Rocky ReachHydroelectricPUD No 1 of Chelan County1.30 GW
WanapumHydroelectricPUD No 2 of Grant County1.22 GW
BoundaryHydroelectricCity of Seattle - (WA)1.16 GW
Priest RapidsHydroelectricPUD No 2 of Grant County950 MW
WellsHydroelectricPUD No 1 of Douglas County855.2 MW
Little GooseHydroelectricUSACE Northwestern Division810 MW
Lower GraniteHydroelectricUSACE Northwestern Division810 MW
Lower MonumentalHydroelectricUSACE Northwestern Division810 MW
Rock IslandHydroelectricPUD No 1 of Chelan County629.4 MW
Ice HarborHydroelectricUSACE Northwestern Division603 MW
RossHydroelectricCity of Seattle - (WA)450 MW
MossyrockHydroelectricCity of Tacoma - (WA)300 MW
Swift 1HydroelectricPacifiCorp240 MW
GorgeHydroelectricCity of Seattle - (WA)207.3 MW
DiabloHydroelectricCity of Seattle - (WA)182.4 MW
MayfieldHydroelectricCity of Tacoma - (WA)162 MW
MerwinHydroelectricPacifiCorp136 MW
YaleHydroelectricPacifiCorp134 MW
H M JacksonHydroelectricPUD No 1 of Snohomish County111.8 MW
Upper BakerHydroelectricPuget Sound Energy Inc104.8 MW
Lower BakerHydroelectricPuget Sound Energy Inc103.9 MW
Summer Falls Power PlantHydroelectricColumbia Basin Hydropower92 MW
Box CanyonHydroelectricPUD No 1 of Pend Oreille County90 MW
Cushman 2HydroelectricCity of Tacoma - (WA)84.6 MW
Swift 2HydroelectricPacifiCorp72 MW
Cowlitz FallsHydroelectricPUD No 1 of Lewis County70 MW
Long LakeHydroelectricAvista Corp70 MW
LaGrandeHydroelectricCity of Tacoma - (WA)64 MW
ChelanHydroelectricPUD No 1 of Chelan County59.2 MW
AlderHydroelectricCity of Tacoma - (WA)50 MW
Cushman 1HydroelectricCity of Tacoma - (WA)43.2 MW
Little Falls (WA)HydroelectricAvista Corp43.2 MW
Snoqualmie 2HydroelectricPuget Sound Energy Inc38.7 MW
Nine MileHydroelectricAvista Corp37.6 MW
Cedar Falls (WA)HydroelectricCity of Seattle - (WA)30 MW
PackwoodHydroelectricEnergy Northwest27.5 MW
Main Canal HeadworksHydroelectricColumbia Basin Hydropower26.8 MW
Twin Falls HydroHydroelectricCentral Rivers Power US, LLC24 MW
ElectronHydroelectricElectron Hydro LLC22.8 MW
Upriver Dam Hydro PlantHydroelectricCity of Spokane17.6 MW
South Fork ToltHydroelectricCity of Seattle - (WA)16.8 MW
Monroe StreetHydroelectricAvista Corp14.8 MW
Tieton Dam Hydro Electric ProjectHydroelectricCity of Burbank Water and Power13.8 MW
RozaHydroelectricU S Bureau of Reclamation12.9 MW
SnoqualmieHydroelectricPuget Sound Energy Inc12.8 MW
WynoocheeHydroelectricCity of Tacoma - (WA)12.8 MW
ChandlerHydroelectricU S Bureau of Reclamation12 MW
Koma KulshanHydroelectricEagle Creek Renewable Energy, LLC12 MW
YelmHydroelectricCity of Centralia - (WA)12 MW
McNary Dam Fish Attraction ProjectHydroelectricNorthern Wasco County PUD10 MW
Upper FallsHydroelectricAvista Corp10 MW
Quincy ChuteHydroelectricPUD No 2 of Grant County9.4 MW
Youngs Creek Hydroelectric ProjectHydroelectricPUD No 1 of Snohomish County7.5 MW
PEC HeadworksHydroelectricPUD No 2 of Grant County6.6 MW
Russell D SmithHydroelectricColumbia Basin Hydropower6.1 MW
Calligan Creek Hydroelectric ProjectHydroelectricPUD No 1 of Snohomish County6 MW
Hancock Creek Hydroelectric ProjectHydroelectricPUD No 1 of Snohomish County6 MW
Weeks FallsHydroelectricEagle Creek Renewable Energy, LLC4.3 MW
Black CreekHydroelectricBlack Creek Hydro Inc3.7 MW
Drop 2 (WA)HydroelectricYakama Power2.5 MW
NewhalemHydroelectricCity of Seattle - (WA)2.3 MW
Potholes East Canal 66.0HydroelectricColumbia Basin Hydropower2.3 MW
Eltopia Branch Canal 4.6HydroelectricColumbia Basin Hydropower2.2 MW
Twin ReservoirsHydroelectricWalla Walla City of2.2 MW
CowicheHydroelectricYakima-Tieton Irrigation Dist1.7 MW
Drop 3 (WA)HydroelectricYakama Power1.6 MW
Meyers FallsHydroelectricHydro Technology Systems Inc1.6 MW
Orchard Avenue 1HydroelectricYakima-Tieton Irrigation Dist1.6 MW
Rocky Brook HydroelectricHydroelectricRocky Brook Electric Inc1.6 MW
Sheep Creek HydroHydroelectricSheep Creek Hydro Inc1.6 MW
Nooksack HydroHydroelectricPuget Sound Hydro LLC1.5 MW
Lilliwaup Falls GeneratingHydroelectricWilliam G. Reed Jr1.4 MW
SkookumchuckHydroelectricTransAlta Centralia Gen LLC1 MW