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Hydroelectric power plants in the United States

1,539 hydroelectric power plants across 50 states — capacity, location, and planned additions, from EIA data.

Development pipeline — planned & under construction

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Planned + under construction

Top states by capacity — capacity · plants

Washington23 GW · 81
California16 GW · 262
Oregon8.5 GW · 69
New York5.9 GW · 170
South Carolina4.3 GW · 33
Tennessee4.2 GW · 29
Virginia3.9 GW · 24
Georgia3.7 GW · 33
Alabama3.3 GW · 24
Arizona2.9 GW · 13

All states

California26215.5 GWNew York1705.9 GWWashington8123 GWIdaho782.7 GWOregon698.5 GWWisconsin58517 MWMaine57738 MWMichigan572.3 GWColorado501.2 GWVermont42320 MWNorth Carolina402 GWMassachusetts332.1 GWSouth Carolina334.3 GWGeorgia333.7 GWAlaska32520 MWPennsylvania322.6 GWNew Hampshire32488 MWUtah311.3 GWTennessee294.2 GWTexas27762 MWMontana242.8 GWAlabama243.3 GWVirginia243.9 GWMinnesota22218 MWArkansas201.4 GWWest Virginia17460 MWWyoming16303 MWConnecticut15150 MWKentucky141.1 GWArizona132.9 GWOklahoma111.1 GWNebraska10332 MWIllinois1057 MWHawaii842 MWMissouri81.1 GWPuerto Rico798 MWNevada61.1 GWOhio6150 MWIndiana6108 MWIowa5187 MWSouth Dakota41.6 GWNew Mexico482 MWMississippi435 MWRhode Island46 MWNew Jersey3468 MWFlorida276 MWMaryland2551 MWLouisiana2241 MWNorth Dakota1583 MWKansas17 MW

Largest hydroelectric plants

Grand Coulee
Hydroelectric · Grand Coulee, Washington · Operating
6,809 MW
Bath County
Hydroelectric · Warm Springs, Virginia · Operating
2,862 MW
Chief Joseph
Hydroelectric · Bridgeport, Washington · Operating
2,456 MW
Robert Moses Niagara
Hydroelectric · Lewiston, New York · Operating
2,429 MW
Wanapum
Hydroelectric · Beverly, Washington · Operating
2,258 MW
John Day
Hydroelectric · Rufus, Oregon · Operating
2,160 MW
Ludington
Hydroelectric · Ludington, Michigan · Operating
1,979 MW
The Dalles
Hydroelectric · The Dalles, Oregon · Operating
1,820 MW
Raccoon Mountain
Hydroelectric · Chattanooga, Tennessee · Operating
1,714 MW
Castaic
Hydroelectric · Castaic, California · Operating
1,682 MW
Bad Creek
Hydroelectric · Salem, South Carolina · Operating
1,680 MW
Rocky Reach
Hydroelectric · Wenatchee, Washington · Operating
1,349 MW
Glen Canyon Dam
Hydroelectric · Page, Arizona · Operating
1,312 MW
Northfield Mountain
Hydroelectric · Northfield, Massachusetts · Operating
1,168 MW
Bonneville
Hydroelectric · Cascade Locks, Oregon · Operating
1,162 MW
Boundary
Hydroelectric · Metaline, Washington · Operating
1,160 MW
Muddy Run
Hydroelectric · Drumore, Pennsylvania · Operating
1,072 MW
Helms Pumped Storage
Hydroelectric · Shaver Lake, California · Operating
1,053 MW
Hoover Dam (AZ)
Hydroelectric · Boulder City, Arizona · Operating
1,039 MW
Hoover Dam (NV)
Hydroelectric · Boulder City, Nevada · Operating
1,039 MW
Haiwee Pumped Storage Project
Hydroelectric · Olancha, California · Planned
1,000 MW
Blenheim Gilboa
Hydroelectric · Gilboa, New York · Operating
1,000 MW
Intermountain Pumped Storage Project
Hydroelectric · Delta, Utah · Planned
1,000 MW
McNary
Hydroelectric · Umatilla, Oregon · Operating
991 MW
Priest Rapids
Hydroelectric · Mattawa, Washington · Operating
950 MW

Source: U.S. Energy Information Administration (EIA-860M)