Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Snoqualmie | Puget Sound Energy Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 61.9 GWh | Dec 1897 | Dec 2023 | Water |
| Nooksack Hydro | Puget Sound Hydro LLC | Glacier, WA | Puget Sound Energy, Inc. (PSEI) | 15.0 GWh | Oct 1906 | Dec 2023 | Water |
| Nine Mile | Avista Corp | Nine Mile, WA | Avista Corporation (AVA) | 118.3 GWh | Jun 1908 | Dec 2023 | Water |
| Little Falls (WA) | Avista Corp | Ford, WA | Avista Corporation (AVA) | 175.8 GWh | Jun 1910 | Dec 2023 | Water |
| LaGrande | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 277.1 GWh | Oct 1912 | Dec 2023 | Water |
| Meyers Falls | Hydro Technology Systems Inc | Kettle Falls, WA | Avista Corporation (AVA) | 9.8 GWh | May 1915 | Dec 2023 | Water |
| Long Lake | Avista Corp | Ford, WA | Avista Corporation (AVA) | 413.0 GWh | Sep 1915 | Dec 2023 | Water |
| Cedar Falls (WA) | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 25.2 GWh | Oct 1921 | Dec 2023 | Water |
| Upper Falls | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 59.9 GWh | Mar 1922 | Dec 2023 | Water |
| Gorge | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 676.4 GWh | Aug 1924 | Aug 2024 | Water |
| Cushman 1 | City of Tacoma - (WA) | Shelton, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 115.5 GWh | May 1926 | Dec 2023 | Water |
| Chelan | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 305.8 GWh | Aug 1927 | Dec 2023 | Water |
| Port Townsend Paper | Port Townsend Paper Co | Port Townsend, WA | Bonneville Power Administration (BPAT) | 35.3 GWh | Dec 1928 | Dec 2023 | Black Liquor : 81.5% Wood/Wood Waste Solids : 13.7% Natural Gas : 3.5% Waste/Other Oil : 1.3% |
| Yelm | City of Centralia - (WA) | Yelm, WA | Bonneville Power Administration (BPAT) | 26.2 GWh | Nov 1930 | Dec 2023 | Water |
| Cushman 2 | City of Tacoma - (WA) | Shelton, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 168.5 GWh | Nov 1930 | Dec 2023 | Water |
| Merwin | PacifiCorp | Ariel, WA | PacifiCorp West (PACW) | 471.6 GWh | Jun 1931 | Dec 2023 | Water |
| Rock Island | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 2.0 TWh | Sep 1931 | Aug 2024 | Water |
| Upriver Dam Hydro Plant | City of Spokane | Spokane, WA | Avista Corporation (AVA) | 36.8 GWh | Dec 1935 | Dec 2023 | Water |
| Diablo | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 548.9 GWh | Sep 1936 | Dec 2023 | Water |
| Grand Coulee | U S Bureau of Reclamation | Grand Coulee, WA | Bonneville Power Administration (BPAT) | 15.0 TWh | Feb 1941 | Aug 2024 | Water |
| Alder | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 169.4 GWh | Nov 1945 | Dec 2023 | Water |
| Nippon Dynawave Packaging Longview WA | Nippon Dynawave Packaging Co. | Longview, WA | Bonneville Power Administration (BPAT) | 291.9 GWh | Dec 1947 | Aug 2024 | Black Liquor : 45.6% Natural Gas : 24.1% Wood/Wood Waste Solids : 18.3% Subbituminous Coal : 8.4% Sludge Waste : 3.1% Residual Fuel Oil : 0.5% |
| Longview Fibre | Longview Fibre Co | Longview, WA | Bonneville Power Administration (BPAT) | 170.9 GWh | Dec 1948 | Dec 2023 | Black Liquor : 58.4% Wood/Wood Waste Solids : 22.0% Natural Gas : 19.6% |
| Ross | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 412.6 GWh | Nov 1952 | Aug 2024 | Water |
| Yale | PacifiCorp | Amboy, WA | PacifiCorp West (PACW) | 516.9 GWh | Aug 1953 | Dec 2023 | Water |
| Box Canyon | PUD No 1 of Pend Oreille County | Ione, WA | Avista Corporation (AVA) | 383.5 GWh | May 1955 | Dec 2023 | Water |
| Chief Joseph | USACE Northwestern Division | Bridgeport, WA | Bonneville Power Administration (BPAT) | 8.9 TWh | Aug 1955 | Aug 2024 | Water |
| Chandler | U S Bureau of Reclamation | Benton City, WA | Bonneville Power Administration (BPAT) | 50.7 GWh | Jan 1956 | Nov 2023 | Water |
| Snoqualmie 2 | Puget Sound Energy Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 104.4 GWh | Dec 1956 | Dec 2023 | Water |
| Cosmo Specialty Fibers Plant | Cosmo Specialty Fibers | Cosmopolis, WA | Bonneville Power Administration (BPAT) | 99.6 GWh | Dec 1956 | Dec 2022 | Wood Waste Liquids, excluding Black Liquor : 71.5% Wood/Wood Waste Solids : 15.8% Residual Fuel Oil : 12.7% |
| Roza | U S Bureau of Reclamation | Yakima, WA | Bonneville Power Administration (BPAT) | 54.5 GWh | Jul 1958 | Dec 2023 | Water |
| Swift 1 | PacifiCorp | Cougar, WA | PacifiCorp West (PACW) | 567.6 GWh | Nov 1958 | Aug 2024 | Water |
| Upper Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 270.8 GWh | Dec 1958 | Dec 2023 | Water |
| Priest Rapids | PUD No 2 of Grant County | Mattawa, WA | Bonneville Power Administration (BPAT) | 3.7 TWh | Sep 1959 | Aug 2024 | Water |
| Lower Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 262.8 GWh | Feb 1960 | Dec 2023 | Water |
| Rocky Reach | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 4.8 TWh | May 1961 | Aug 2024 | Water |
| Ice Harbor | USACE Northwestern Division | Burbank, WA | Bonneville Power Administration (BPAT) | 1.4 TWh | Dec 1961 | Aug 2024 | Water |
| Mayfield | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 545.0 GWh | Feb 1963 | Dec 2023 | Water |
| Wanapum | PUD No 2 of Grant County | Beverly, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 3.9 TWh | May 1963 | Aug 2024 | Water |
| Packwood | Energy Northwest | Packwood, WA | Bonneville Power Administration (BPAT) | 60.4 GWh | Mar 1964 | Dec 2023 | Water |
| Boundary | City of Seattle - (WA) | Metaline, WA | Seattle City Light (SCL) | 3.1 TWh | Jul 1967 | Aug 2024 | Water |
| Wells | PUD No 1 of Douglas County | Pateros, WA | PUD No. 1 of Douglas County (DOPD) | 3.4 TWh | Aug 1967 | Aug 2024 | Water |
| Mossyrock | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 844.5 GWh | Sep 1968 | Aug 2024 | Water |
| University of Washington Power Plant | University of Washington | Seattle, WA | Seattle City Light (SCL) | 6.0 GWh | Dec 1968 | Aug 2024 | Natural Gas : 97.6% Distillate Fuel Oil : 2.4% |
| Lower Monumental | USACE Northwestern Division | Kahlotus, WA | Bonneville Power Administration (BPAT) | 1.3 TWh | May 1969 | Aug 2024 | Water |
| Crystal Mountain | Puget Sound Energy Inc | Greenwater, WA | Puget Sound Energy, Inc. (PSEI) | 196.0 MWh | Nov 1969 | Jun 2024 | Distillate Fuel Oil |
| Little Goose | USACE Northwestern Division | Dayton, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Mar 1970 | Aug 2024 | Water |
| Transalta Centralia Generation | TransAlta Centralia Gen LLC | Centralia, WA | Bonneville Power Administration (BPAT) | 3.0 TWh | Nov 1972 | Aug 2024 | Subbituminous Coal : 99.8% |
| Lower Granite | USACE Northwestern Division | Pomeroy, WA | Bonneville Power Administration (BPAT) | 1.3 TWh | Mar 1975 | Aug 2024 | Water |
| Northeast (WA) | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 112.0 MWh | Nov 1978 | Dec 2023 | Natural Gas |
| Whitehorn | Puget Sound Energy Inc | Blaine, WA | Puget Sound Energy, Inc. (PSEI) | 449.0 GWh | Sep 1981 | Dec 2023 | Natural Gas : 99.9% |
| Frederickson | Puget Sound Energy Inc | Tacoma, WA | Puget Sound Energy, Inc. (PSEI) | 159.6 GWh | Oct 1981 | Dec 2023 | Natural Gas : 94.9% Distillate Fuel Oil : 5.1% |
| Russell D Smith | Columbia Basin Hydropower | Othello, WA | Bonneville Power Administration (BPAT) | 17.0 GWh | Aug 1982 | Oct 2023 | Water |
| Eltopia Branch Canal 4.6 | Columbia Basin Hydropower | Pasco, WA | Bonneville Power Administration (BPAT) | 9.9 GWh | Apr 1983 | Oct 2023 | Water |
| Kettle Falls Generating Station | Avista Corp | Kettle Falls, WA | Avista Corporation (AVA) | 335.1 GWh | Nov 1983 | Dec 2023 | Wood/Wood Waste Solids : 92.2% Natural Gas : 7.8% |
| Fredonia | Puget Sound Energy Inc | Mt Vernon, WA | Puget Sound Energy, Inc. (PSEI) | 846.6 GWh | Apr 1984 | Aug 2024 | Natural Gas : 99.5% Distillate Fuel Oil : 0.5% |
| H M Jackson | PUD No 1 of Snohomish County | Sultan, WA | Bonneville Power Administration (BPAT) | 298.0 GWh | May 1984 | Dec 2023 | Water |
| Columbia Generating Station | Energy Northwest | Richland, WA | Bonneville Power Administration (BPAT) | 9.9 TWh | Nov 1984 | Aug 2024 | Nuclear |
| Summer Falls Power Plant | Columbia Basin Hydropower | Coulee City, WA | Avista Corporation (AVA) | 447.2 GWh | Dec 1984 | Oct 2023 | Water |
| Potholes East Canal 66.0 | Columbia Basin Hydropower | Pasco, WA | Bonneville Power Administration (BPAT) | 7.3 GWh | Feb 1985 | Oct 2023 | Water |
| Quincy Chute | PUD No 2 of Grant County | Quincy, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 33.8 GWh | Sep 1985 | Oct 2023 | Water |
| Rocky Brook Hydroelectric | Rocky Brook Electric Inc | Brinnon, WA | Bonneville Power Administration (BPAT) | 219.0 MWh | Nov 1985 | Dec 2023 | Water |
| Lilliwaup Falls Generating | William G. Reed Jr | Lilliwaup, WA | Bonneville Power Administration (BPAT) | 6.0 GWh | Apr 1986 | Dec 2023 | Water |
| Sheep Creek Hydro | Sheep Creek Hydro Inc | Northport, WA | Avista Corporation (AVA) | 5.6 GWh | May 1986 | Dec 2023 | Water |
| Main Canal Headworks | Columbia Basin Hydropower | Coulee City, WA | Avista Corporation (AVA) | 118.7 GWh | Dec 1986 | Oct 2023 | Water |
| Orchard Avenue 1 | Yakima-Tieton Irrigation Dist | Yakima, WA | PacifiCorp West (PACW) | 2.6 GWh | Feb 1987 | Oct 2023 | Water |
| Cowiche | Yakima-Tieton Irrigation Dist | Tieton, WA | PacifiCorp West (PACW) | 3.4 GWh | Feb 1987 | Oct 2023 | Water |
| Twin Reservoirs | Walla Walla City of | Walla Walla, WA | Bonneville Power Administration (BPAT) | 8.1 GWh | Mar 1988 | Dec 2023 | Water |
| Twin Falls Hydro | Central Rivers Power US, LLC | North Bend, WA | Puget Sound Energy, Inc. (PSEI) | 50.0 GWh | Nov 1989 | Dec 2023 | Water |
| Weeks Falls | Eagle Creek Renewable Energy, LLC | North Bend, WA | Puget Sound Energy, Inc. (PSEI) | 8.8 GWh | May 1990 | Dec 2023 | Water |
| PEC Headworks | PUD No 2 of Grant County | Moses Lake, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 18.7 GWh | Aug 1990 | Oct 2023 | Water |
| Skookumchuck | TransAlta Centralia Gen LLC | Tenino, WA | Bonneville Power Administration (BPAT) | 3.2 GWh | Aug 1990 | Dec 2023 | Water |
| Koma Kulshan | Eagle Creek Renewable Energy, LLC | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 26.3 GWh | Sep 1990 | Dec 2023 | Water |
| Spokane Waste to Energy | City of Spokane | Spokane, WA | Avista Corporation (AVA) | 130.9 GWh | Aug 1991 | Aug 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| HF Sinclair Puget Sound Refining | HF Sinclair Corporation | Anacortes, WA | Puget Sound Energy, Inc. (PSEI) | 990.3 GWh | Aug 1991 | Aug 2024 | Natural Gas : 77.8% Other Gas : 22.2% |
| Monroe Street | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 89.1 GWh | Nov 1992 | Dec 2023 | Water |
| Encogen | Puget Sound Energy Inc | Bellingham, WA | Puget Sound Energy, Inc. (PSEI) | 856.2 GWh | Feb 1993 | Aug 2024 | Natural Gas : 99.8% |
| Sumas Power Plant | Puget Sound Energy Inc | Sumas, WA | Puget Sound Energy, Inc. (PSEI) | 834.9 GWh | Feb 1993 | Dec 2023 | Natural Gas |
| Wynoochee | City of Tacoma - (WA) | Montesano, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 26.4 GWh | Dec 1993 | Dec 2023 | Water |
| Black Creek | Black Creek Hydro Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 8.6 GWh | Jan 1994 | Dec 2023 | Water |
| Ferndale Generating Station | Puget Sound Energy Inc | Ferndale, WA | Puget Sound Energy, Inc. (PSEI) | 1.7 TWh | Mar 1994 | Aug 2024 | Natural Gas : 99.9% |
| Cowlitz Falls | PUD No 1 of Lewis County | Randle, WA | Bonneville Power Administration (BPAT) | 190.4 GWh | May 1994 | Dec 2023 | Water |
| South Fork Tolt | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 30.1 GWh | Oct 1995 | Dec 2023 | Water |
| McNary Dam Fish Attraction Project | Northern Wasco County PUD | Plymouth, WA | Bonneville Power Administration (BPAT) | 73.8 GWh | Oct 1997 | Dec 2023 | Water |
| River Road Gen Plant | PUD No 1 of Clark County - (WA) | Vancouver, WA | Bonneville Power Administration (BPAT) | 1.6 TWh | Nov 1997 | Aug 2024 | Natural Gas |
| FPL Energy Vansycle LLC (WA) | FPL Energy Vansycle LLC | Touchet, WA | Bonneville Power Administration (BPAT) | 331.4 GWh | Nov 2001 | Dec 2023 | Wind |
| Boulder Park | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 63.9 GWh | Apr 2002 | Dec 2023 | Natural Gas |
| Frederickson Power LP | Frederickson Power LP | Tacoma, WA | Bonneville Power Administration (BPAT) | 1.8 TWh | Jul 2002 | Dec 2023 | Natural Gas |
| Nine Canyon | Energy Northwest | Kennewick, WA | Bonneville Power Administration (BPAT) | 194.7 GWh | Aug 2002 | Dec 2023 | Wind |
| Sierra Pacific Aberdeen | Sierra Pacific Industries | Aberdeen, WA | Bonneville Power Administration (BPAT) | 105.2 GWh | Feb 2003 | Dec 2023 | Wood/Wood Waste Solids |
| Chehalis Generating Facility | PacifiCorp | Chehalis, WA | Bonneville Power Administration (BPAT) | 2.4 TWh | Jul 2003 | Aug 2024 | Natural Gas |
| Goldendale Generating Station | Puget Sound Energy Inc | Goldendale, WA | Puget Sound Energy, Inc. (PSEI) | 2.2 TWh | Jul 2004 | Dec 2023 | Natural Gas |
| Grimes Way | Washington State University | Pullman, WA | Avista Corporation (AVA) | 101.0 MWh | Dec 2004 | Aug 2024 | Natural Gas : 52.6% Distillate Fuel Oil : 47.4% |
| Hopkins Ridge Wind | Puget Sound Energy Inc | Dayton, WA | Bonneville Power Administration (BPAT) | 365.5 GWh | Oct 2005 | Aug 2024 | Wind |
| Tieton Dam Hydro Electric Project | City of Burbank Water and Power | Rimrock, WA | PacifiCorp West (PACW) | 45.0 GWh | Aug 2006 | Oct 2023 | Water |
| Big Horn Wind Project | Avangrid Renewables LLC | Bickelton, WA | Avangrid Renewables, LLC (AVRN) | 477.7 GWh | Sep 2006 | Aug 2024 | Wind |
| Wild Horse | Puget Sound Energy Inc | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 592.7 GWh | Nov 2006 | Aug 2024 | Wind : 99.9% |
| Darrington | Hampton Lumber Mills - Washington Inc | Darrington, WA | Bonneville Power Administration (BPAT) | 16.0 GWh | Jan 2007 | Dec 2023 | Wood/Wood Waste Solids |
| Sierra Pacific Burlington Facility | Sierra Pacific Industries | Mt Vernon, WA | Puget Sound Energy, Inc. (PSEI) | 160.1 GWh | Feb 2007 | Dec 2023 | Wood/Wood Waste Solids |
| Marengo Wind Plant | PacifiCorp | Dayton, WA | PacifiCorp West (PACW) | 560.6 GWh | Jul 2007 | Dec 2023 | Wind |
Browse Power Plants By Washington Counties
Figures are based on August 2024 generation numbers.| County | State Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Grant County, WA | # 1 | 8 | 23.3 TWh |
| Douglas County, WA | # 2 | 2 | 12.3 TWh |
| Benton County, WA | # 3 | 6 | 10.3 TWh |
| Lewis County, WA | # 4 | 8 | 7.0 TWh |
| Chelan County, WA | # 5 | 4 | 7.0 TWh |
| Whatcom County, WA | # 6 | 13 | 5.8 TWh |
| Klickitat County, WA | # 7 | 16 | 5.3 TWh |
| Grays Harbor County, WA | # 8 | 6 | 3.5 TWh |
| Pend Oreille County, WA | # 9 | 3 | 3.5 TWh |
| Cowlitz County, WA | # 10 | 6 | 3.4 TWh |
| Columbia County, WA | # 11 | 4 | 3.1 TWh |
| Walla Walla County, WA | # 12 | 4 | 3.1 TWh |
| Pierce County, WA | # 13 | 13 | 2.7 TWh |
| Skagit County, WA | # 14 | 4 | 2.3 TWh |
| Whitman County, WA | # 15 | 6 | 1.6 TWh |
| Clark County, WA | # 16 | 2 | 1.6 TWh |
| County | State Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Kittitas County, WA | # 17 | 9 | 1.1 TWh |
| Garfield County, WA | # 18 | 1 | 780.8 GWh |
| Lincoln County, WA | # 19 | 2 | 588.8 GWh |
| Skamania County, WA | # 20 | 1 | 567.6 GWh |
| Spokane County, WA | # 21 | 7 | 499.1 GWh |
| Thurston County, WA | # 22 | 3 | 449.2 GWh |
| Adams County, WA | # 23 | 4 | 439.6 GWh |
| Stevens County, WA | # 24 | 4 | 350.4 GWh |
| Snohomish County, WA | # 25 | 9 | 329.5 GWh |
| King County, WA | # 26 | 12 | 328.7 GWh |
| Mason County, WA | # 27 | 3 | 290.0 GWh |
| Yakima County, WA | # 28 | 12 | 105.4 GWh |
| Clallam County, WA | # 29 | 3 | 36.2 GWh |
| Jefferson County, WA | # 30 | 2 | 35.5 GWh |
| Franklin County, WA | # 31 | 3 | 17.2 GWh |