| Grand Coulee | Grant | Operational | 6.8 GW | 33 | Hydro, Pumped Storage | U S Bureau of Reclamation |
| Chief Joseph | Douglas | Operational | 2.45 GW | 27 | Hydro | USACE Northwestern Division |
| Rocky Reach | Chelan | Operational | 1.34 GW | 11 | Hydro | PUD No 1 of Chelan County - (WA) |
| Wanapum | Grant | Operational | 1.22 GW | 10 | Hydro | PUD No 2 of Grant County - (WA) |
| Columbia Generating Station | Benton | Operational | 1.2 GW | 1 | Nuclear | Energy Northwest- Columbia |
| Hop Hill Solar Generation and BESS | Benton | Planned | 1.2 GW | 3 | Solar, Battery, Wind | HOHI bn, LLC |
| Boundary | Pend Oreille | Operational | 1.15 GW | 6 | Hydro | City of Seattle - (WA) |
| Priest Rapids | Grant | Operational | 950 MW | 10 | Hydro | PUD No 2 of Grant County - (WA) |
| Wells | Chelan | Operational | 866.8 MW | 10 | Hydro | PUD No 1 of Douglas County - (WA) |
| Little Goose | Columbia | Operational | 810 MW | 6 | Hydro | USACE Northwestern Division |
| Lower Granite | Whitman | Operational | 810 MW | 6 | Hydro | USACE Northwestern Division |
| Lower Monumental | Walla Walla | Operational | 810 MW | 6 | Hydro | USACE Northwestern Division |
| Transalta Centralia Generation | Lewis | Operational | 729.9 MW | 1 | Coal | TransAlta Centralia Gen LLC |
| Grays Harbor Energy Facility | Grays Harbor | Operational | 714.9 MW | 3 | Gas | Invenergy Services LLC |
| Rock Island | Chelan | Operational | 629.4 MW | 19 | Hydro | PUD No 1 of Chelan County - (WA) |
| Ice Harbor | Walla Walla | Operational | 603 MW | 6 | Hydro | USACE Northwestern Division |
| Lower Snake Solar Generation BESS | Garfield | Planned | 600 MW | 2 | Solar, Battery | LOSN, LLC |
| Chehalis Generating Facility | Lewis | Operational | 593.3 MW | 3 | Gas | PacifiCorp |
| Ross | Whatcom | Operational | 450 MW | 4 | Hydro | City of Seattle - (WA) |
| Fredonia (WA) | Skagit | Operational | 376 MW | 4 | Gas | Puget Sound Energy Inc |
| Lower Snake River Wind Energy Project | Garfield | Operational | 342.7 MW | 1 | Wind | Puget Sound Energy Inc |
| Mint Farm Generating Station | Cowlitz | Operational | 319 MW | 2 | Gas | Puget Sound Energy Inc |
| Frederickson Power LP | Pierce | Operational | 318.3 MW | 2 | Gas | Frederickson Power LP |
| Goldendale Generating Station | Klickitat | Operational | 302.8 MW | 2 | Gas | Puget Sound Energy Inc |
| Mossyrock | Lewis | Operational | 300 MW | 2 | Hydro | City of Tacoma - (WA) |
| Ferndale Generating Station | Whatcom | Operational | 285.5 MW | 3 | Gas | Puget Sound Energy Inc |
| Wild Horse | Kittitas | Operational | 273.1 MW | 3 | Wind, Solar | Puget Sound Energy Inc |
| Tucannon River Wind Farm | Columbia | Operational | 266.8 MW | 1 | Wind | Portland General Electric Co |
| Windy Flats Wind Project | Klickitat | Operational | 262.2 MW | 1 | Wind | Windy Flats Partners LLC |
| River Road Gen Plant | Clark | Operational | 248 MW | 1 | Gas | PUD No 1 of Clark County - (WA) |
| Swift 1 | Skamania | Operational | 240 MW | 3 | Hydro | PacifiCorp |
| Marengo Wind Plant | Columbia | Operational | 234 MW | 2 | Wind | PacifiCorp |
| Gorge | Whatcom | Operational | 207.3 MW | 4 | Hydro | City of Seattle - (WA) |
| White Creek Wind Farm | Klickitat | Operational | 204 MW | 1 | Wind | White Creek Wind 1 LLC |
| Centralia Battery Energy Storage System | Thurston | Planned | 200 MW | 1 | Battery | CENT bn, LLC |
| Greenwater BESS | Pierce | Planned | 200 MW | 1 | Battery | GREE bn, LLC |
| Big Horn Wind Project | Klickitat | Operational | 199 MW | 1 | Wind | Avangrid Power LLC |
| Diablo | Whatcom | Operational | 182.4 MW | 4 | Hydro | City of Seattle - (WA) |
| Frederickson | Pierce | Operational | 177.8 MW | 2 | Gas | Puget Sound Energy Inc |
| FPL Energy Vansycle LLC (WA) | Walla Walla | Operational | 176.9 MW | 1 | Wind | FPL Energy Vansycle LLC |
| Encogen | Whatcom | Operational | 176.4 MW | 4 | Gas | Puget Sound Energy Inc |
| AGATE BESS | Kitsap | Planned | 170 MW | 1 | Battery | BrightNight Power |
| Whitehorn | Whatcom | Operational | 169.2 MW | 2 | Gas | Puget Sound Energy Inc |
| Mayfield | Lewis | Operational | 162 MW | 4 | Hydro | City of Tacoma - (WA) |
| Carriger | Klickitat | Planned | 160 MW | 1 | Solar | Cypress Creek Renewables |
| Hopkins Ridge Wind | Columbia | Operational | 156.6 MW | 2 | Wind | Puget Sound Energy Inc |
| Juniper Canyon I Wind Project | Klickitat | Operational | 151.2 MW | 1 | Wind | Avangrid Power LLC |
| Lund Hill Solar | Klickitat | Operational | 150 MW | 1 | Solar | Avangrid Power LLC |
| Rattlesnake Flat | Adams | Operational | 144 MW | 1 | Wind | Rattlesnake Flat, LLC |
| Bluebird Solar | Klickitat | Planned | 140 MW | 1 | Solar | Avangrid Power LLC |
| HF Sinclair Puget Sound Refining | Skagit | Operational | 139.8 MW | 3 | Gas | HF Sinclair Corporation |
| Washington Wind | Klickitat | Operational | 136.3 MW | 1 | Wind | Washington Wind LLC |
| Merwin | Cowlitz | Operational | 136 MW | 4 | Hydro | PacifiCorp |
| Skookumchuck Wind Facility | Thurston | Operational | 136 MW | 1 | Wind | Southern Power Co |
| Yale | Cowlitz | Operational | 134 MW | 2 | Hydro | PacifiCorp |
| SR Quincy Valley | Grant | Planned | 130 MW | 1 | Solar | SR Quincy Valley, LLC |
| Saddle Mountain East Wind Farm | Adams | Planned | 126 MW | 1 | Wind | EDP Renewables North America LLC |
| Sumas Power Plant | Whatcom | Operational | 125.5 MW | 2 | Gas | Puget Sound Energy Inc |
| H M Jackson | Snohomish | Operational | 111.8 MW | 4 | Hydro | PUD No 1 of Snohomish County - (WA) |
| Palouse | Whitman | Operational | 105.3 MW | 1 | Wind | Onward Energy |
| Upper Baker | Whatcom | Operational | 104.8 MW | 2 | Hydro | Puget Sound Energy Inc |
| Lower Baker | Skagit | Operational | 103.9 MW | 2 | Hydro | Puget Sound Energy Inc |
| Goodnoe Hills | Klickitat | Operational | 103.4 MW | 1 | Wind | PacifiCorp |
| Sagebrush Power Partners | Kittitas | Operational | 100.7 MW | 1 | Wind | Sagebrush Power Partners, LLC |
| Harvest Wind Project | Klickitat | Operational | 98.9 MW | 1 | Wind | Harvest Wind Project TIC |
| Nine Canyon | Benton | Operational | 95.9 MW | 1 | Wind | Energy Northwest |
| Summer Falls Power Plant | Grant | Operational | 92 MW | 2 | Hydro | Columbia Basin Hydropower |
| Box Canyon | Pend Oreille | Operational | 90 MW | 4 | Hydro | PUD No 1 of Pend Oreille County - (WA) |
| Vantage Wind Energy LLC | Kittitas | Operational | 90 MW | 1 | Wind | Invenergy Services LLC |
| Cushman 2 | Mason | Operational | 84.6 MW | 5 | Hydro | City of Tacoma - (WA) |
| Goose Prairie Solar | Yakima | Operational | 80 MW | 1 | Solar | Goose Prairie Solar LLC |
| High Top Solar | Yakima | Planned | 80 MW | 1 | Solar | Cypress Creek Renewables |
| Ostrea Solar, LLC | Yakima | Operational | 80 MW | 1 | Solar | Cypress Creek Renewables |
| Swift 2 | Cowlitz | Operational | 72 MW | 2 | Hydro | PacifiCorp |
| Cowlitz Falls | Lewis | Operational | 70 MW | 2 | Hydro | PUD No 1 of Lewis County - (WA) |
| Long Lake | Lincoln | Operational | 70 MW | 4 | Hydro | Avista Corp |
| LaGrande | Pierce | Operational | 64 MW | 5 | Hydro | City of Tacoma - (WA) |
| Nippon Dynawave Packaging Longview WA | Cowlitz | Operational | 62.4 MW | 4 | Biomass | Nippon Dynawave Packaging Co. |
| Northeast (WA) | Spokane | Operational | 61.8 MW | 1 | Gas | Avista Corp |
| Chelan | Chelan | Operational | 59.2 MW | 2 | Hydro | PUD No 1 of Chelan County - (WA) |
| Kettle Falls Generating Station | Stevens | Operational | 57.9 MW | 2 | Biomass, Gas | Avista Corp |
| Alder | Pierce | Operational | 51 MW | 2 | Hydro | City of Tacoma - (WA) |
| Cushman 1 | Mason | Operational | 50.4 MW | 2 | Hydro | City of Tacoma - (WA) |
| Big Horn Wind II | Klickitat | Operational | 50 MW | 1 | Wind | Avangrid Power LLC |
| Linden Wind Energy Project | Klickitat | Operational | 50 MW | 1 | Wind | Los Angeles Department of Water & Power |
| Orion - Helion | Chelan | Planned | 50 MW | 1 | Other | Helion Energy, Inc. |
| Longview Fibre | Cowlitz | Operational | 45 MW | 2 | Biomass | Longview Fibre Co |
| Little Falls (WA) | Lincoln | Operational | 43.2 MW | 4 | Hydro | Avista Corp |
| Snoqualmie 2 | King | Operational | 38.7 MW | 2 | Hydro | Puget Sound Energy Inc |
| Nine Mile | Spokane | Operational | 37.6 MW | 4 | Hydro | Avista Corp |
| Cedar Falls (WA) | King | Operational | 30 MW | 2 | Hydro | City of Seattle - (WA) |
| Sierra Pacific Burlington Facility | Skagit | Operational | 28 MW | 1 | Biomass | Sierra Pacific Industries |
| Packwood | Lewis | Operational | 27.5 MW | 1 | Hydro | Energy Northwest - Packwood |
| Main Canal Headworks | Grant | Operational | 26.8 MW | 1 | Hydro | Columbia Basin Hydropower |
| Spokane Waste to Energy | Spokane | Operational | 26 MW | 1 | Waste | City of Spokane - (WA) |
| Arlington Battery Energy Storage System | Snohomish | Planned | 25 MW | 1 | Battery | PUD No 1 of Snohomish County - (WA) |
| Boulder Park | Spokane | Operational | 24.6 MW | 6 | Gas | Avista Corp |
| Twin Falls Hydro | King | Operational | 24 MW | 2 | Hydro | Central Rivers Power US, LLC |
| Electron | Pierce | Operational | 22.8 MW | 4 | Hydro | Electron Hydro LLC |
| Adams Nielson Solar | Adams | Operational | 19.2 MW | 1 | Solar | Strata Manager, LLC |
| Sierra Pacific Aberdeen | Grays Harbor | Operational | 18 MW | 1 | Biomass | Sierra Pacific Industries |
| Upriver Dam Hydro Plant | Spokane | Operational | 17.6 MW | 5 | Hydro | City of Spokane - (WA) |
| South Fork Tolt | King | Operational | 16.8 MW | 1 | Hydro | City of Seattle - (WA) |
| Cosmo Specialty Fibers Plant | Grays Harbor | Operational | 15 MW | 2 | Biomass | Cosmo Specialty Fibers |
| University of Washington Power Plant | King | Operational | 15 MW | 7 | Oil, Gas | University of Washington |
| Monroe Street | Spokane | Operational | 14.8 MW | 1 | Hydro | Avista Corp |
| Tieton Dam Hydro Electric Project | Yakima | Operational | 13.8 MW | 2 | Hydro | City of Burbank Water and Power - (CA) |
| Roza | Yakima | Operational | 12.9 MW | 1 | Hydro | U S Bureau of Reclamation |
| Snoqualmie | King | Operational | 12.8 MW | 5 | Hydro | Puget Sound Energy Inc |
| Wynoochee | Grays Harbor | Operational | 12.8 MW | 1 | Hydro | City of Tacoma - (WA) |
| McKinley Paper Co. - Washington Mill | Clallam | Operational | 12.6 MW | 1 | Biomass | McKinley Paper Co. - Washington Mill |
| Chandler | Benton | Operational | 12 MW | 2 | Hydro | U S Bureau of Reclamation |
| Koma Kulshan | Whatcom | Operational | 12 MW | 1 | Hydro | Eagle Creek Renewable Energy, LLC |
| Yelm | Thurston | Operational | 12 MW | 3 | Hydro | City of Centralia - (WA) |
| McNary Dam Fish Attraction Project | Benton | Operational | 10 MW | 1 | Hydro | Northern Wasco County PUD - (OR) |
| Upper Falls | Spokane | Operational | 10 MW | 1 | Hydro | Avista Corp |
| Port Townsend Paper | Jefferson | Operational | 7.5 MW | 1 | Biomass | Port Townsend Paper Co |
| Youngs Creek Hydroelectric Project | Snohomish | Operational | 7.5 MW | 1 | Hydro | PUD No 1 of Snohomish County - (WA) |
| Russell D Smith | Adams | Operational | 6.1 MW | 1 | Hydro | Columbia Basin Hydropower |
| Calligan Creek Hydroelectric Project | King | Operational | 6 MW | 1 | Hydro | PUD No 1 of Snohomish County - (WA) |
| Coastal Energy Project | Grays Harbor | Operational | 6 MW | 1 | Wind | Coastal Community Action Program |
| Hancock Creek Hydroelectric Project | King | Operational | 6 MW | 1 | Hydro | PUD No 1 of Snohomish County - (WA) |
| Cedar Hills | King | Operational | 5.4 MW | 18 | Landfill, Gas | King County Solid Waste Division |
| Camas Solar Project | Kittitas | Operational | 5 MW | 1 | Solar | Altus Power America Management, LLC |
| Penstemon Solar Project | Kittitas | Operational | 5 MW | 1 | Solar | Altus Power America Management, LLC |
| Urtica Solar Project | Kittitas | Operational | 5 MW | 1 | Solar | Altus Power America Management, LLC |
| West Point Treatment Plant | King | Operational | 4.6 MW | 2 | Biomass | King County Dept-Natural Res - (WA) |
| Darrington | Snohomish | Operational | 4.5 MW | 1 | Biomass | Hampton Lumber Mills - Washington Inc |
| LRI LFGTE Facility | Pierce | Operational | 4.5 MW | 3 | Landfill, Gas | Frontier Operation Services |
| Swauk Wind LLC | Kittitas | Operational | 4.3 MW | 1 | Wind | Gamesa Wind US LLC |
| Weeks Falls | King | Operational | 4.3 MW | 1 | Hydro | Eagle Creek Renewable Energy, LLC |
| Horn Rapids Solar, Storage and Training | Benton | Operational | 4.2 MW | 2 | Solar, Battery | Energy Northwest |
| Grimes Way | Whitman | Operational | 4 MW | 3 | Gas, Oil | Washington State University |
| Black Creek | King | Operational | 3.7 MW | 1 | Hydro | Black Creek Hydro Inc |
| Crystal Mountain | Pierce | Operational | 2.7 MW | 1 | Oil | Puget Sound Energy Inc |
| Drop 2 (WA) | Yakima | Operational | 2.5 MW | 1 | Hydro | Yakama Power |
| Newhalem | Whatcom | Operational | 2.3 MW | 1 | Hydro | City of Seattle - (WA) |
| Potholes East Canal 66.0 | Franklin | Operational | 2.3 MW | 1 | Hydro | Columbia Basin Hydropower |
| Eltopia Branch Canal 4.6 | Franklin | Operational | 2.2 MW | 1 | Hydro | Columbia Basin Hydropower |
| Twin Reservoirs | Walla Walla | Operational | 2.2 MW | 1 | Hydro | City of Walla Walla - (WA) |
| Glacier Battery Storage | Whatcom | Operational | 2 MW | 1 | Battery | Puget Sound Energy Inc |
| Meyers Falls | Stevens | Operational | 1.8 MW | 4 | Hydro | Hydro Technology Systems Inc |
| Cowiche | Yakima | Operational | 1.7 MW | 1 | Hydro | Yakima-Tieton Irrigation Dist |
| Drop 3 (WA) | Yakima | Operational | 1.6 MW | 2 | Hydro | Yakama Power |
| Orchard Avenue 1 | Yakima | Operational | 1.6 MW | 2 | Hydro | Yakima-Tieton Irrigation Dist |
| Rocky Brook Hydroelectric | Jefferson | Operational | 1.6 MW | 1 | Hydro | Rocky Brook Electric Inc |
| Sheep Creek Hydro | Stevens | Operational | 1.6 MW | 2 | Hydro | Sheep Creek Hydro Inc |
| Arlington Microgrid | Snohomish | Operational | 1.5 MW | 2 | Battery, Solar | PUD No 1 of Snohomish County - (WA) |
| Nooksack Hydro | Whatcom | Operational | 1.5 MW | 1 | Hydro | Puget Sound Hydro LLC |
| Lilliwaup Falls Generating | Mason | Operational | 1.4 MW | 7 | Hydro | William G. Reed Jr |
| Biotech LS 0836 | Whitman | Operational | 1 MW | 1 | Oil | Washington State University |
| Skookumchuck | Thurston | Operational | 1 MW | 1 | Hydro | TransAlta Centralia Gen LLC |