Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Coastal Energy Project | Coastal Community Action Program | Aberdeen, WA | Bonneville Power Administration (BPAT) | 11.2 GWh | May 2010 | Dec 2022 | Wind |
| LaGrande | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 381.5 GWh | Oct 1912 | Dec 2022 | Water |
| Alder | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 186.1 GWh | Nov 1945 | Dec 2023 | Water |
| Cushman 1 | City of Tacoma - (WA) | Shelton, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 124.6 GWh | May 1926 | Dec 2022 | Water |
| Cushman 2 | City of Tacoma - (WA) | Shelton, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 182.3 GWh | Nov 1930 | Dec 2022 | Water |
| Mayfield | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 850.5 GWh | Feb 1963 | Dec 2022 | Water |
| Mossyrock | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 940.1 GWh | Sep 1968 | Jun 2024 | Water |
| Wynoochee | City of Tacoma - (WA) | Montesano, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 28.1 GWh | Dec 1993 | Dec 2023 | Water |
| Spokane Waste to Energy | City of Spokane | Spokane, WA | Avista Corporation (AVA) | 139.6 GWh | Aug 1991 | Jun 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Upriver Dam Hydro Plant | City of Spokane | Spokane, WA | Avista Corporation (AVA) | 42.4 GWh | Dec 1935 | Dec 2023 | Water |
| Boundary | City of Seattle - (WA) | Metaline, WA | Seattle City Light (SCL) | 3.2 TWh | Jul 1967 | Jun 2024 | Water |
| Diablo | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 592.1 GWh | Sep 1936 | Dec 2023 | Water |
| South Fork Tolt | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 34.4 GWh | Oct 1995 | Dec 2023 | Water |
| Gorge | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 663.8 GWh | Aug 1924 | Jun 2024 | Water |
| Cedar Falls (WA) | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 31.3 GWh | Oct 1921 | Dec 2023 | Water |
| Ross | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 383.6 GWh | Nov 1952 | Jun 2024 | Water |
| Yelm | City of Centralia - (WA) | Yelm, WA | Bonneville Power Administration (BPAT) | 26.2 GWh | Nov 1930 | Dec 2023 | Water |
| Tieton Dam Hydro Electric Project | City of Burbank Water and Power | Rimrock, WA | PacifiCorp West (PACW) | 47.8 GWh | Aug 2006 | Oct 2023 | Water |
| Twin Falls Hydro | Central Rivers Power US, LLC | North Bend, WA | Puget Sound Energy, Inc. (PSEI) | 79.1 GWh | Nov 1989 | Dec 2022 | Water |
| Black Creek | Black Creek Hydro Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 9.1 GWh | Jan 1994 | Dec 2023 | Water |
| Cedar Hills | Bio Energy Washington, LLC | Maple Valley, WA | Puget Sound Energy, Inc. (PSEI) | 454.0 MWh | Mar 2009 | Dec 2023 | Landfill Gas : 89.3% Distillate Fuel Oil : 10.7% |
| Little Falls (WA) | Avista Corp | Ford, WA | Avista Corporation (AVA) | 190.9 GWh | Jun 1910 | Dec 2023 | Water |
| Boulder Park | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 74.9 GWh | Apr 2002 | Dec 2023 | Natural Gas |
| Kettle Falls Generating Station | Avista Corp | Kettle Falls, WA | Avista Corporation (AVA) | 368.3 GWh | Nov 1983 | Dec 2023 | Wood/Wood Waste Solids : 92.8% Natural Gas : 7.2% |
| Northeast (WA) | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 254.8 MWh | Nov 1978 | Dec 2023 | Natural Gas |
| Long Lake | Avista Corp | Ford, WA | Avista Corporation (AVA) | 449.3 GWh | Sep 1915 | Dec 2023 | Water |
| Nine Mile | Avista Corp | Nine Mile, WA | Avista Corporation (AVA) | 129.3 GWh | Jun 1908 | Dec 2023 | Water |
| Upper Falls | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 64.6 GWh | Mar 1922 | Dec 2023 | Water |
| Monroe Street | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 96.3 GWh | Nov 1992 | Dec 2023 | Water |
| Juniper Canyon I Wind Project | Avangrid Renewables LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 300.3 GWh | Feb 2011 | Jun 2024 | Wind |
| Big Horn Wind II | Avangrid Renewables LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 116.9 GWh | Dec 2010 | Jun 2024 | Wind |
| Big Horn Wind Project | Avangrid Renewables LLC | Bickelton, WA | Avangrid Renewables, LLC (AVRN) | 510.6 GWh | Sep 2006 | Jun 2024 | Wind |
| Lund Hill Solar | Avangrid Renewables LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 372.6 GWh | Sep 2022 | Jun 2024 | Solar |
Browse Power Plants By Washington Counties
Figures are based on December 2023 generation numbers.| County | State Rank | Active Plants | Dec 2023 Generation |
|---|---|---|---|
| Jefferson County, WA | # 31 | 2 | 219.0 MWh |
| Franklin County, WA | # 30 | 3 | 18.0 GWh |
| Clallam County, WA | # 29 | 3 | 37.7 GWh |
| Yakima County, WA | # 28 | 12 | 112.1 GWh |
| Mason County, WA | # 27 | 3 | 313.3 GWh |
| King County, WA | # 26 | 12 | 369.6 GWh |
| Stevens County, WA | # 25 | 4 | 384.8 GWh |
| Adams County, WA | # 24 | 4 | 464.3 GWh |
| Thurston County, WA | # 23 | 3 | 471.6 GWh |
| Snohomish County, WA | # 22 | 8 | 492.7 GWh |
| Spokane County, WA | # 21 | 7 | 547.3 GWh |
| Skamania County, WA | # 20 | 1 | 593.9 GWh |
| Lincoln County, WA | # 19 | 2 | 640.2 GWh |
| Garfield County, WA | # 18 | 1 | 838.1 GWh |
| Kittitas County, WA | # 17 | 9 | 1.2 TWh |
| Whitman County, WA | # 16 | 6 | 1.8 TWh |
| County | State Rank | Active Plants | Dec 2023 Generation |
|---|---|---|---|
| Clark County, WA | # 15 | 2 | 1.9 TWh |
| Pierce County, WA | # 14 | 13 | 2.3 TWh |
| Skagit County, WA | # 13 | 4 | 2.6 TWh |
| Cowlitz County, WA | # 12 | 6 | 3.3 TWh |
| Columbia County, WA | # 11 | 4 | 3.4 TWh |
| Walla Walla County, WA | # 10 | 4 | 3.4 TWh |
| Pend Oreille County, WA | # 9 | 3 | 3.6 TWh |
| Grays Harbor County, WA | # 8 | 6 | 3.7 TWh |
| Klickitat County, WA | # 7 | 15 | 5.2 TWh |
| Whatcom County, WA | # 6 | 13 | 5.7 TWh |
| Lewis County, WA | # 5 | 8 | 7.6 TWh |
| Chelan County, WA | # 4 | 4 | 7.7 TWh |
| Benton County, WA | # 3 | 6 | 10.6 TWh |
| Douglas County, WA | # 2 | 2 | 13.5 TWh |
| Grant County, WA | # 1 | 8 | 25.3 TWh |