Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Sierra Pacific Aberdeen | Sierra Pacific Industries | Aberdeen, WA | Bonneville Power Administration (BPAT) | 91.4 GWh | Feb 2003 | Dec 2025 | Wood/Wood Waste Solids |
| Yale | PacifiCorp | Amboy, WA | PacifiCorp West (PACW) | 472.5 GWh | Aug 1953 | Dec 2025 | Water |
| HF Sinclair Puget Sound Refining | HF Sinclair Corporation | Anacortes, WA | Puget Sound Energy, Inc. (PSEI) | 896.6 GWh | Aug 1991 | May 2026 | Natural Gas : 74.1% Other Gas : 25.9% |
| Merwin | PacifiCorp | Ariel, WA | PacifiCorp West (PACW) | 422.6 GWh | Jun 1931 | Dec 2025 | Water |
| Arlington Microgrid | PUD No 1 of Snohomish County - (WA) | Arlington, WA | Bonneville Power Administration (BPAT) | 601.0 MWh | May 2019 | Dec 2025 | Solar |
| Encogen | Puget Sound Energy Inc | Bellingham, WA | Puget Sound Energy, Inc. (PSEI) | 236.9 GWh | Feb 1993 | May 2026 | Natural Gas |
| Chandler | U S Bureau of Reclamation | Benton City, WA | Bonneville Power Administration (BPAT) | 30.6 GWh | Jan 1956 | Nov 2025 | Water |
| Wanapum | PUD No 2 of Grant County - (WA) | Beverly, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 5.3 TWh | May 1963 | May 2026 | Water |
| Big Horn Wind Project | Avangrid Power LLC | Bickelton, WA | Avangrid Renewables, LLC (AVRN) | 508.0 GWh | Sep 2006 | May 2026 | Wind |
| Big Horn Wind II | Avangrid Power LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 111.8 GWh | Dec 2010 | May 2026 | Wind |
| Lund Hill Solar | Avangrid Power LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 366.7 GWh | Sep 2022 | May 2026 | Solar |
| Juniper Canyon I Wind Project | Avangrid Power LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 114.2 GWh | Feb 2011 | May 2026 | Wind |
| Whitehorn | Puget Sound Energy Inc | Blaine, WA | Puget Sound Energy, Inc. (PSEI) | 65.2 GWh | Sep 1981 | Dec 2025 | Natural Gas : 99.8% |
| Chief Joseph | USACE Northwestern Division | Bridgeport, WA | Bonneville Power Administration (BPAT) | 11.5 TWh | Aug 1955 | May 2026 | Water |
| Rocky Brook Hydroelectric | Rocky Brook Electric Inc | Brinnon, WA | Bonneville Power Administration (BPAT) | 464.0 MWh | Nov 1985 | May 2025 | Water |
| Ice Harbor | USACE Northwestern Division | Burbank, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Dec 1961 | May 2026 | Water |
| Windy Flats Wind Project | Windy Flats Partners LLC | Centerville, WA | Bonneville Power Administration (BPAT) | 650.9 GWh | Sep 2009 | Dec 2025 | Wind |
| Transalta Centralia Generation | TransAlta Centralia Gen LLC | Centralia, WA | Bonneville Power Administration (BPAT) | 3.2 TWh | Nov 1972 | Dec 2025 | Subbituminous Coal : 99.7% |
| Chehalis Generating Facility | PacifiCorp | Chehalis, WA | Bonneville Power Administration (BPAT) | 2.3 TWh | Jul 2003 | May 2026 | Natural Gas |
| Wells | PUD No 1 of Douglas County - (WA) | Chelan, WA | PUD No. 1 of Douglas County (DOPD) | 4.3 TWh | Aug 1967 | May 2026 | Water |
| Koma Kulshan | Eagle Creek Renewable Energy, LLC | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 32.3 GWh | Sep 1990 | Dec 2025 | Water |
| Upper Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 332.7 GWh | Dec 1958 | Dec 2025 | Water |
| Lower Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 364.8 GWh | Feb 1960 | Dec 2025 | Water |
| Swift 1 | PacifiCorp | Cougar, WA | PacifiCorp West (PACW) | 508.0 GWh | Nov 1958 | May 2026 | Water |
| Main Canal Headworks | Columbia Basin Hydropower | Coulee City, WA | Avista Corporation (AVA) | 105.2 GWh | Dec 1986 | Oct 2025 | Water |
| Summer Falls Power Plant | Columbia Basin Hydropower | Coulee City, WA | Avista Corporation (AVA) | 391.2 GWh | Dec 1984 | Oct 2025 | Water |
| Darrington | Hampton Lumber Mills - Washington Inc | Darrington, WA | Bonneville Power Administration (BPAT) | 12.3 GWh | Jan 2007 | Dec 2025 | Wood/Wood Waste Solids |
| Tucannon River Wind Farm | Portland General Electric Co | Dayton, WA | Portland General Electric Company (PGE) | 736.8 GWh | Nov 2014 | Dec 2025 | Wind |
| Marengo Wind Plant | PacifiCorp | Dayton, WA | PacifiCorp West (PACW) | 612.6 GWh | Jul 2007 | Dec 2025 | Wind |
| Little Goose | USACE Northwestern Division | Dayton, WA | Bonneville Power Administration (BPAT) | 1.6 TWh | Mar 1970 | May 2026 | Water |
| Hopkins Ridge Wind | Puget Sound Energy Inc | Dayton, WA | Bonneville Power Administration (BPAT) | 352.9 GWh | Oct 2005 | May 2026 | Wind |
| Penstemon Solar Project | Altus Power America Management, LLC | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 11.2 GWh | Dec 2021 | Dec 2025 | Solar |
| Wild Horse | Puget Sound Energy Inc | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 603.3 GWh | Nov 2006 | May 2026 | Wind : 99.9% |
| Sagebrush Power Partners | Sagebrush Power Partners, LLC | Ellensburg, WA | Bonneville Power Administration (BPAT) | 277.0 GWh | Oct 2010 | Dec 2025 | Wind |
| Vantage Wind Energy LLC | Invenergy Services LLC | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 253.2 GWh | Jul 2010 | Dec 2025 | Wind |
| Camas Solar Project | Altus Power America Management, LLC | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 10.7 GWh | May 2022 | Dec 2025 | Solar |
| Urtica Solar Project | Altus Power America Management, LLC | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 11.4 GWh | Oct 2022 | Dec 2025 | Solar |
| Grays Harbor Energy Facility | Invenergy Services LLC | Elma, WA | Bonneville Power Administration (BPAT) | 2.3 TWh | Apr 2008 | May 2026 | Natural Gas |
| Ferndale Generating Station | Puget Sound Energy Inc | Ferndale, WA | Puget Sound Energy, Inc. (PSEI) | 737.5 GWh | Mar 1994 | May 2026 | Natural Gas |
| Little Falls (WA) | Avista Corp | Ford, WA | Avista Corporation (AVA) | 188.8 GWh | Jun 1910 | Dec 2025 | Water |
| Long Lake | Avista Corp | Ford, WA | Avista Corporation (AVA) | 435.4 GWh | Sep 1915 | Dec 2025 | Water |
| Nooksack Hydro | Puget Sound Hydro LLC | Glacier, WA | Puget Sound Energy, Inc. (PSEI) | 20.2 GWh | Oct 1906 | Dec 2025 | Water |
| Goodnoe Hills | PacifiCorp | Goldendale, WA | Bonneville Power Administration (BPAT) | 268.3 GWh | May 2008 | Dec 2025 | Wind |
| Goldendale Generating Station | Puget Sound Energy Inc | Goldendale, WA | Puget Sound Energy, Inc. (PSEI) | 2.1 TWh | Jul 2004 | Dec 2024 | Natural Gas |
| Washington Wind | Washington Wind LLC | Goldendale, WA | Bonneville Power Administration (BPAT) | 379.0 GWh | Apr 2009 | Dec 2025 | Wind |
| Linden Wind Energy Project | Los Angeles Department of Water & Power | Goldendale, WA | Bonneville Power Administration (BPAT) | 104.3 GWh | May 2010 | Dec 2025 | Wind |
| LRI LFGTE Facility | Frontier Operation Services | Graham, WA | Puget Sound Energy, Inc. (PSEI) | 33.2 GWh | Oct 2013 | Dec 2025 | Landfill Gas |
| Grand Coulee | U S Bureau of Reclamation | Grand Coulee, WA | Bonneville Power Administration (BPAT) | 18.3 TWh | Feb 1941 | May 2026 | Water |
| Crystal Mountain | Puget Sound Energy Inc | Greenwater, WA | Puget Sound Energy, Inc. (PSEI) | 775.0 MWh | Nov 1969 | May 2026 | Distillate Fuel Oil |
| Box Canyon | PUD No 1 of Pend Oreille County - (WA) | Ione, WA | Avista Corporation (AVA) | 459.8 GWh | May 1955 | Dec 2025 | Water |
| Lower Monumental | USACE Northwestern Division | Kahlotus, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | May 1969 | May 2026 | Water |
| Nine Canyon | Energy Northwest | Kennewick, WA | Bonneville Power Administration (BPAT) | 185.8 GWh | Aug 2002 | Dec 2025 | Wind |
| Kettle Falls Generating Station | Avista Corp | Kettle Falls, WA | Avista Corporation (AVA) | 287.2 GWh | Nov 1983 | Dec 2025 | Wood/Wood Waste Solids : 99.8% |
| Meyers Falls | Hydro Technology Systems Inc | Kettle Falls, WA | Avista Corporation (AVA) | 8.7 GWh | May 1915 | Dec 2025 | Water |
| Alder | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 187.0 GWh | Nov 1945 | Dec 2025 | Water |
| LaGrande | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 291.2 GWh | Oct 1912 | Dec 2025 | Water |
| Lilliwaup Falls Generating | William G. Reed Jr | Lilliwaup, WA | Bonneville Power Administration (BPAT) | 5.3 GWh | Apr 1986 | Dec 2025 | Water |
| Adams Nielson Solar | Strata Manager, LLC | Lind, WA | Avista Corporation (AVA) | 42.1 GWh | Oct 2018 | May 2026 | Solar |
| Longview Fibre | Longview Fibre Co | Longview, WA | Bonneville Power Administration (BPAT) | 248.5 GWh | Dec 1948 | Dec 2025 | Black Liquor : 62.6% Natural Gas : 20.0% Wood/Wood Waste Solids : 17.4% |
| Mint Farm Generating Station | Puget Sound Energy Inc | Longview, WA | Puget Sound Energy, Inc. (PSEI) | 2.3 TWh | Dec 2007 | Dec 2024 | Natural Gas |
| Nippon Dynawave Packaging Longview WA | Nippon Dynawave Packaging Co. | Longview, WA | Bonneville Power Administration (BPAT) | 266.6 GWh | Dec 1947 | Apr 2026 | Black Liquor : 55.0% Natural Gas : 18.9% Wood/Wood Waste Solids : 16.9% Subbituminous Coal : 6.2% Sludge Waste : 2.6% |
| Cedar Hills | King County Solid Waste Division | Maple Valley, WA | Puget Sound Energy, Inc. (PSEI) | 53.0 MWh | Mar 2009 | Dec 2025 | Landfill Gas : 86.4% Distillate Fuel Oil : 13.6% |
| Priest Rapids | PUD No 2 of Grant County - (WA) | Mattawa, WA | Bonneville Power Administration (BPAT) | 4.9 TWh | Sep 1959 | May 2026 | Water |
| Boundary | City of Seattle - (WA) | Metaline, WA | Seattle City Light (SCL) | 3.8 TWh | Jul 1967 | May 2026 | Water |
| Youngs Creek Hydroelectric Project | PUD No 1 of Snohomish County - (WA) | Monroe, WA | Bonneville Power Administration (BPAT) | 12.9 GWh | Oct 2011 | Dec 2025 | Water |
| Wynoochee | City of Tacoma - (WA) | Montesano, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 22.5 GWh | Dec 1993 | Dec 2025 | Water |
| PEC Headworks | Columbia Basin Hydropower | Moses Lake, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 17.7 GWh | Aug 1990 | Oct 2025 | Water |
| Goose Prairie Solar | Goose Prairie Solar LLC | Moxee, WA | Bonneville Power Administration (BPAT) | 178.5 GWh | Nov 2024 | May 2026 | Solar |
| Sierra Pacific Burlington Facility | Sierra Pacific Industries | Mt Vernon, WA | Puget Sound Energy, Inc. (PSEI) | 160.2 GWh | Feb 2007 | Dec 2025 | Wood/Wood Waste Solids |
| Fredonia (WA) | Puget Sound Energy Inc | Mt Vernon, WA | Puget Sound Energy, Inc. (PSEI) | 60.4 GWh | Apr 1984 | May 2026 | Natural Gas : 97.0% Distillate Fuel Oil : 3.0% |
| Nine Mile | Avista Corp | Nine Mile, WA | Avista Corporation (AVA) | 132.2 GWh | Jun 1908 | Dec 2025 | Water |
| Twin Falls Hydro | Central Rivers Power US, LLC | North Bend, WA | Puget Sound Energy, Inc. (PSEI) | 59.3 GWh | Nov 1989 | Dec 2025 | Water |
| Weeks Falls | Eagle Creek Renewable Energy, LLC | North Bend, WA | Puget Sound Energy, Inc. (PSEI) | 10.7 GWh | May 1990 | Dec 2025 | Water |
| South Fork Tolt | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 48.6 GWh | Oct 1995 | Dec 2025 | Water |
| Cedar Falls (WA) | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 53.6 GWh | Oct 1921 | Dec 2025 | Water |
| Sheep Creek Hydro | Sheep Creek Hydro Inc | Northport, WA | Avista Corporation (AVA) | 6.8 GWh | May 1986 | Dec 2025 | Water |
| Palouse | Onward Energy | Oakesdale, WA | Avista Corporation (AVA) | 303.4 GWh | Nov 2012 | Dec 2025 | Wind |
| Russell D Smith | Columbia Basin Hydropower | Othello, WA | Bonneville Power Administration (BPAT) | 14.4 GWh | Aug 1982 | Oct 2025 | Water |
| Packwood | Energy Northwest - Packwood | Packwood, WA | Bonneville Power Administration (BPAT) | 73.8 GWh | Mar 1964 | Dec 2025 | Water |
| Eltopia Branch Canal 4.6 | Columbia Basin Hydropower | Pasco, WA | Bonneville Power Administration (BPAT) | 7.7 GWh | Apr 1983 | Oct 2025 | Water |
| Potholes East Canal 66.0 | Columbia Basin Hydropower | Pasco, WA | Bonneville Power Administration (BPAT) | 3.2 GWh | Feb 1985 | Oct 2025 | Water |
| McNary Dam Fish Attraction Project | Northern Wasco County PUD - (OR) | Plymouth, WA | Bonneville Power Administration (BPAT) | 72.5 GWh | Oct 1997 | Dec 2025 | Water |
| Lower Snake River Wind Energy Project | Puget Sound Energy Inc | Pomeroy, WA | Bonneville Power Administration (BPAT) | 802.3 GWh | Jan 2012 | May 2026 | Wind |
| Lower Granite | USACE Northwestern Division | Pomeroy, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Mar 1975 | May 2026 | Water |
| Port Townsend Paper | Port Townsend Paper Co | Port Townsend, WA | Bonneville Power Administration (BPAT) | 7.7 GWh | Dec 1928 | Dec 2025 | Black Liquor : 48.8% Wood/Wood Waste Solids : 40.5% Natural Gas : 9.0% Waste/Other Oil : 1.6% |
| Grimes Way | Washington State University | Pullman, WA | Avista Corporation (AVA) | 110.0 MWh | Dec 2004 | May 2026 | Natural Gas : 59.2% Distillate Fuel Oil : 40.8% |
| Quincy Chute | Columbia Basin Hydropower | Quincy, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 32.6 GWh | Sep 1985 | Oct 2025 | Water |
| Skookumchuck Wind Facility | Southern Power Co | Rainier, WA | Puget Sound Energy, Inc. (PSEI) | 411.3 GWh | Oct 2020 | May 2026 | Wind |
| Cowlitz Falls | PUD No 1 of Lewis County - (WA) | Randle, WA | Bonneville Power Administration (BPAT) | 195.6 GWh | May 1994 | Dec 2025 | Water |
| Horn Rapids Solar, Storage and Training | Energy Northwest | Richland, WA | Bonneville Power Administration (BPAT) | 4.6 GWh | Sep 2020 | Dec 2025 | Solar |
| Columbia Generating Station | Energy Northwest- Columbia | Richland, WA | Bonneville Power Administration (BPAT) | 9.1 TWh | Nov 1984 | May 2026 | Nuclear |
| Tieton Dam Hydro Electric Project | City of Burbank Water and Power - (CA) | Rimrock, WA | PacifiCorp West (PACW) | 24.2 GWh | Aug 2006 | Sep 2025 | Water |
| Rattlesnake Flat | Rattlesnake Flat, LLC | Ritzville, WA | Avista Corporation (AVA) | 419.3 GWh | Nov 2020 | May 2026 | Wind |
| Diablo | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 518.2 GWh | Sep 1936 | Dec 2025 | Water |
| Ross | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 714.9 GWh | Nov 1952 | May 2026 | Water |
| Gorge | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 912.4 GWh | Aug 1924 | May 2026 | Water |
| White Creek Wind Farm | White Creek Wind 1 LLC | Roosevelt, WA | Bonneville Power Administration (BPAT) | 536.0 GWh | Oct 2007 | Dec 2025 | Wind |
| Harvest Wind Project | Harvest Wind Project TIC | Roosevelt, WA | Bonneville Power Administration (BPAT) | 244.4 GWh | Nov 2009 | Dec 2025 | Wind |
| University of Washington Power Plant | University of Washington | Seattle, WA | Seattle City Light (SCL) | 129.4 MWh | Dec 1968 | May 2026 | Distillate Fuel Oil |
| West Point Treatment Plant | King County Dept-Natural Res - (WA) | Seattle, WA | Seattle City Light (SCL) | 14.3 GWh | May 2012 | Dec 2025 | Other Biomass Gas |
Browse Power Plants By Washington Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Grant County, WA | # 1 | 9 | 29.0 TWh |
| Chelan County, WA | # 2 | 6 | 13.4 TWh |
| Douglas County, WA | # 3 | 1 | 11.5 TWh |
| Benton County, WA | # 4 | 7 | 9.4 TWh |
| Lewis County, WA | # 5 | 8 | 7.3 TWh |
| Klickitat County, WA | # 6 | 17 | 5.4 TWh |
| Whatcom County, WA | # 7 | 13 | 4.2 TWh |
| Pend Oreille County, WA | # 8 | 3 | 4.2 TWh |
| Cowlitz County, WA | # 9 | 6 | 3.7 TWh |
| Columbia County, WA | # 10 | 4 | 3.3 TWh |
| Walla Walla County, WA | # 11 | 4 | 3.3 TWh |
| Grays Harbor County, WA | # 12 | 6 | 2.4 TWh |
| Pierce County, WA | # 13 | 14 | 2.1 TWh |
| Whitman County, WA | # 14 | 6 | 1.8 TWh |
| Skagit County, WA | # 15 | 4 | 1.5 TWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Clark County, WA | # 16 | 2 | 1.3 TWh |
| Kittitas County, WA | # 17 | 9 | 1.2 TWh |
| Garfield County, WA | # 18 | 2 | 802.3 GWh |
| Lincoln County, WA | # 19 | 2 | 624.1 GWh |
| Spokane County, WA | # 20 | 7 | 560.3 GWh |
| Skamania County, WA | # 21 | 1 | 508.0 GWh |
| Adams County, WA | # 22 | 4 | 475.8 GWh |
| Thurston County, WA | # 23 | 4 | 445.4 GWh |
| King County, WA | # 24 | 12 | 392.2 GWh |
| Snohomish County, WA | # 25 | 9 | 359.3 GWh |
| Stevens County, WA | # 26 | 4 | 302.8 GWh |
| Mason County, WA | # 27 | 3 | 273.6 GWh |
| Yakima County, WA | # 28 | 12 | 247.1 GWh |
| Franklin County, WA | # 29 | 3 | 10.9 GWh |
| Jefferson County, WA | # 30 | 3 | 8.2 GWh |