Largest hydroelectric power plants in the US
The 100 largest hydroelectric power plants in the US by hydroelectric nameplate capacity, from EIA-860M for August 2026, with 2025 net generation from EIA-923.
Top 100 by hydroelectric nameplate capacity
| # | Plant | Hydroelectric MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Grand CouleeGrant County, WA | 6,495 | 16,151 | – |
| 2 | Robert Moses NiagaraNiagara County, NY | 2,429 | 14,318 | 67.3% |
| 3 | Chief JosephDouglas County, WA | 1,744 | 9,806 | 45.6% |
| 4 | John DaySherman County, OR | 1,485 | 7,589 | 40.1% |
| 5 | Rocky ReachChelan County, WA | 1,349 | 5,241 | – |
| 6 | Glen Canyon DamCoconino County, AZ | 1,312 | 2,753 | 24.0% |
| 7 | WanapumGrant County, WA | 1,220 | 4,438 | 41.5% |
| 8 | The DallesWasco County, OR | 1,206 | 5,933 | 37.2% |
| 9 | BoundaryPend Oreille County, WA | 1,160 | 3,099 | 30.5% |
| 10 | Hoover Dam (NV)Clark County, NV | 1,039 | 1,808 | 19.9% |
| 11 | Hoover Dam (AZ)Mohave County, AZ | 1,039 | 927 | 10.2% |
| 12 | BonnevilleMultnomah County, OR | 980 | 3,722 | 36.6% |
| 13 | Priest RapidsGrant County, WA | 950 | 4,165 | 50.0% |
| 14 | Robert Moses Power DamSt Lawrence County, NY | 855 | 6,727 | 84.2% |
| 15 | McNaryUmatilla County, OR | 851 | 4,016 | 46.3% |
| 16 | WellsChelan County, WA | 789 | 3,708 | – |
| 17 | OaheHughes County, SD | 786 | 2,014 | 29.2% |
| 18 | ShastaShasta County, CA | 714 | 2,348 | 37.5% |
| 19 | BrownleeWashington County, ID | 675 | 2,256 | 38.1% |
| 20 | Lower MonumentalWalla Walla County, WA | 675 | 1,477 | 20.8% |
| 21 | Lower GraniteWhitman County, WA | 675 | 1,461 | 20.6% |
| 22 | Wilson DamLauderdale County, AL | 667 | 2,396 | 41.0% |
| 23 | GarrisonMercer County, ND | 583 | 2,005 | 39.2% |
| 24 | Little GooseColumbia County, WA | 540 | 1,589 | 22.4% |
| 25 | Big Bend DamBuffalo County, SD | 538 | 746 | 15.8% |
| 26 | ConowingoHarford County, MD | 531 | 1,549 | 33.3% |
| 27 | Rock IslandChelan County, WA | 514 | 2,227 | 40.4% |
| 28 | Noxon RapidsSanders County, MT | 488 | 1,362 | 31.9% |
| 29 | DworshakClearwater County, ID | 465 | 1,517 | 37.2% |
| 30 | RossWhatcom County, WA | 450 | 532 | 13.5% |
| 31 | Hungry HorseFlathead County, MT | 428 | 633 | 16.9% |
| 32 | Ice HarborWalla Walla County, WA | 423 | 1,511 | 28.6% |
| 33 | LibbyLincoln County, MT | 420 | 1,608 | 35.0% |
| 34 | Safe HarborLancaster County, PA | 418 | 861 | 23.5% |
| 35 | Hells CanyonWallowa County, OR | 411 | 2,025 | 56.2% |
| 36 | Wheeler DamLawrence County, AL | 404 | 1,183 | 33.4% |
| 37 | Round ButteJefferson County, OR | 373 | 772 | 23.7% |
| 38 | J Strom ThurmondMcCormick County, SC | 362 | 566 | 17.9% |
| 39 | Edward C HyattButte County, CA · Hydro and pumped storage | 351 | 1,953 | – |
| 40 | Cowans FordLincoln County, NC | 350 | 125 | 4.1% |
| 41 | Hartwell LakeHart County, GA | 335 | 344 | 9.4% |
| 42 | ColgateYuba County, CA | 315 | 1,258 | 45.6% |
| 43 | Smith MountainPittsylvania County, VA · Hydro and pumped storage | 300 | −86.8 | – |
| 44 | MossyrockLewis County, WA | 300 | 903 | 34.3% |
| 45 | Richard B RussellElbert County, GA · Hydro and pumped storage | 300 | 257 | – |
| 46 | New MelonesTuolumne County, CA | 300 | 271 | 10.3% |
| 47 | John H KerrMecklenburg County, VA | 297 | 346 | 13.3% |
| 48 | Fort RandallCharles Mix County, SD | 280 | 1,417 | 50.5% |
| 49 | YellowtailBig Horn County, MT | 278 | 566 | 23.2% |
| 50 | Devil CanyonSan Bernardino County, CA | 276 | 790 | 32.6% |
| 51 | Wolf CreekRussell County, KY | 270 | 1,022 | 43.2% |
| 52 | White Rock/Slab CreekEl Dorado County, CA | 269 | 449 | – |
| 53 | Cabinet GorgeBonner County, ID | 265 | 886 | 38.2% |
| 54 | Bull ShoalsMarion County, AR | 255 | 1,040 | 34.9% |
| 55 | Davis DamMohave County, AZ | 255 | 906 | 40.6% |
| 56 | Fontana DamSwain County, NC | 255 | 900 | 40.3% |
| 57 | Collierville PowerhouseCalaveras County, CA | 253 | 342 | 15.4% |
| 58 | CartersMurray County, GA · Hydro and pumped storage | 250 | 30.2 | – |
| 59 | HoltwoodLancaster County, PA | 247 | 833 | 38.5% |
| 60 | Pickwick Landing DamHardin County, TN | 240 | 1,295 | 61.6% |
| 61 | Swift 1Skamania County, WA | 240 | 535 | 25.4% |
| 62 | Selis Ksanka QlispeLake County, MT | 228 | 971 | 48.6% |
| 63 | Walter Bouldin DamElmore County, AL | 225 | 399 | 20.2% |
| 64 | Kentucky DamMarshall County, KY | 219 | 1,143 | 59.7% |
| 65 | Martin DamElmore County, AL | 211 | 287 | 15.6% |
| 66 | Osage DamMiller County, MO | 208 | 499 | 27.4% |
| 67 | Saluda LexingtonLexington County, SC | 207 | 91.5 | 5.0% |
| 68 | GorgeWhatcom County, WA | 207 | 769 | 42.3% |
| 69 | Table RockTaney County, MO | 200 | 528 | 30.2% |
| 70 | FolsomSacramento County, CA | 199 | 503 | 28.9% |
| 71 | S C MooreGrafton County, NH | 195 | 255 | 14.9% |
| 72 | Sidney A Murray Jr HydroelectricConcordia Parish, LA | 192 | 989 | 58.8% |
| 73 | Mammoth PoolMadera County, CA | 190 | 466 | 28.0% |
| 74 | Oxbow (OR)Baker County, OR | 190 | 990 | 59.5% |
| 75 | DiabloWhatcom County, WA | 182 | 518 | 32.4% |
| 76 | Lewis Smith DamWalker County, AL | 181 | 275 | 17.3% |
| 77 | Dion R HolmTuolumne County, CA | 180 | 578 | 36.6% |
| 78 | Spring CreekShasta County, CA | 180 | 385 | 24.4% |
| 79 | GastonHalifax County, NC | 178 | 226 | 14.5% |
| 80 | Lay DamChilton County, AL | 177 | 482 | 31.1% |
| 81 | Palisades DamBonneville County, ID | 176 | 657 | 42.5% |
| 82 | Watts Bar HydroRhea County, TN | 175 | 865 | 56.6% |
| 83 | Big Creek 3Fresno County, CA | 175 | 674 | 44.1% |
| 84 | Morrow PointMontrose County, CO | 173 | 263 | 17.3% |
| 85 | Bartletts FerryLee County, AL | 173 | 324 | 21.4% |
| 86 | Don PedroTuolumne County, CA | 171 | 280 | 18.7% |
| 87 | Mitchell DamCoosa County, AL | 170 | 391 | 26.3% |
| 88 | James B BlackShasta County, CA | 169 | 668 | 45.3% |
| 89 | Walter F GeorgeClay County, GA | 168 | 341 | 23.2% |
| 90 | ComerfordGrafton County, NH | 168 | 297 | 20.2% |
| 91 | Pine FlatFresno County, CA | 165 | 331 | 22.9% |
| 92 | Fort PeckMcCone County, MT | 162 | 757 | 48.1% |
| 93 | MayfieldLewis County, WA | 162 | 603 | 42.5% |
| 94 | JaybirdEl Dorado County, CA | 162 | 485 | 34.2% |
| 95 | DardanellePope County, AR | 161 | 539 | 38.3% |
| 96 | ChickamaugaHamilton County, TN | 160 | 694 | 49.6% |
| 97 | CaminoEl Dorado County, CA | 158 | 312 | 22.6% |
| 98 | KeoweePickens County, SC | 158 | 44.3 | 3.2% |
| 99 | CalderwoodBlount County, TN | 157 | 569 | 41.5% |
| 100 | Center HillDeKalb County, TN | 156 | 356 | – |
Projects where hydroelectric is the largest fuel or at least a fifth of nameplate capacity. MW is hydroelectric nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
More US rankings
Largest power plants in the US100 plants · 242,483 MWLargest solar farms in the US100 plants · 33,836 MWLargest wind farms in the US100 plants · 41,918 MWLargest battery storage projects in the US100 projects · 25,097 MWLargest natural gas power plants in the US100 plants · 159,752 MWLargest coal power plants in the US100 plants · 151,335 MWLargest nuclear power plants in the US54 plants · 101,906 MWLargest power plants by 2025 net generation100 plants · 219,984 MW
Hydroelectric power plants by state
Alabama · 23Alaska · 32Arizona · 5Arkansas · 18California · 209Colorado · 47Connecticut · 13Georgia · 29Hawaii · 6Idaho · 74Illinois · 4Indiana · 6Iowa · 4Kentucky · 11Maine · 48Maryland · 2Massachusetts · 28Michigan · 51Minnesota · 22Missouri · 6Montana · 23Nebraska · 10Nevada · 6New Hampshire · 32New Mexico · 4New York · 155North Carolina · 35Ohio · 4Oklahoma · 9Oregon · 60Pennsylvania · 16Puerto Rico · 7Rhode Island · 3South Carolina · 28South Dakota · 4Tennessee · 28Texas · 16Utah · 28Vermont · 46Virginia · 20Washington · 68West Virginia · 12Wisconsin · 63Wyoming · 15