Conventional Hydroelectric Power Plants In the US

The Largest Conventional Hydroelectric Power Plants in the US

PlantCity/CountyStatePrimary Fuel TypeMWh GeneratedCO2 EmissionsRank EmissionsCO2 Emissions/MWhRant Emissions/MWhClosing Date
Carter HydroNorthern Colorado Water Conservancy District (100.00%)
Larimer County CO Conventional Hydroelectric9,987MWh11
Douglas County WA Conventional Hydroelectric9,811,504MWh11
Quail Creek Hydro Plant #1Washington Cnty Wtr Consv Dist (100.00%)
Hurricane UT Conventional Hydroelectric9,573MWh11
Garland Canal Power PlantShoshone Irrigation District (100.00%)
Park County WY Conventional Hydroelectric9,488MWh11
Lewis County WA Conventional Hydroelectric824,447MWh11
Fries Hydroelectric ProjectEnel Green Power (100.00%)
Fries VA Conventional Hydroelectric8,205MWh11
Fair Oaks CDP CA Conventional Hydroelectric8,197MWh11
Chester Diversion Hydroelectric ProjectFall River Electric (100.00%)
Fremont County ID Conventional Hydroelectric7,950MWh11
San Bernardino CA Conventional Hydroelectric790,938MWh11
Sibley MillAugusta Canal Authority (100.00%)
Augusta GA Conventional Hydroelectric7,521MWh11
Klickitat County WA Conventional Hydroelectric7,383,337MWh11
St. Lawrence County NY Conventional Hydroelectric7,033,270MWh11
Lockport PowerhouseMetro Wtr Recl Dist Grtr Chi (100.00%)
Will County IL Conventional Hydroelectric7,001MWh11
Whatcom County WA Conventional Hydroelectric700,007MWh11
William F Matson Generating StationAllegheny Electric Cooperative (100.00%)
Huntingdon County PA Conventional Hydroelectric69,151MWh11
Plumas County CA Conventional Hydroelectric604,494MWh11
Fresno County CA Conventional Hydroelectric593,202MWh11
Wasco County OR Conventional Hydroelectric5,779,550MWh11
International Falls PowerBoise White Paper LLC (100.00%)
International Falls MN Conventional Hydroelectric57,216MWh11
Maricopa County AZ Conventional Hydroelectric56,556MWh11
Rhinelander MillAhlstrom-Munksjo (100.00%)
Rhinelander WI Conventional Hydroelectric5,629MWh11
Iowa Hydro LLCRenewable World Energies LLC (100.00%)
Jackson County IA Conventional Hydroelectric5,540MWh11
Skamania County WA Conventional Hydroelectric553,859MWh11
Trinity County CA Conventional Hydroelectric552,748MWh11
Folsom CA Conventional Hydroelectric546,375MWh11
Shasta County CA Conventional Hydroelectric527,768MWh11
Kaukauna WI Conventional Hydroelectric51,917MWh11
Chelan County WA Conventional Hydroelectric5,184,872MWh11
Fairfield Pumped StorageDominion Energy (100.00%)
Fairfield County SC Conventional Hydroelectric497,531MWh11
Tuolumne County CA Conventional Hydroelectric492,291MWh11
Granby HydroNorthern Water Hydropower Enterprise (100.00%)
Grand County CO Conventional Hydroelectric4,857MWh11
Collierville PowerhouseCalaveras County Water Dist (100.00%)
Calaveras County CA Conventional Hydroelectric465,249MWh11
Placer County CA Conventional Hydroelectric454,440MWh11
Fresno County CA Conventional Hydroelectric448,758MWh11
El Dorado County CA Conventional Hydroelectric444,272MWh11
El Dorado County CA Conventional Hydroelectric433,936MWh11
Shasta County CA Conventional Hydroelectric432,722MWh11
Kittitas County WA Conventional Hydroelectric4,287,040MWh11
Fresno County CA Conventional Hydroelectric427,868MWh11
Madera County CA Conventional Hydroelectric421,459MWh11
King Manalo
Last Reviewed By: King Manalo
Published: 2025-07-29