Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Nooksack Hydro | Puget Sound Hydro LLC | Glacier, WA | Puget Sound Energy, Inc. (PSEI) | 20.1 GWh | Oct 1906 | Dec 2024 | Water |
| Tieton Dam Hydro Electric Project | City of Burbank Water and Power | Rimrock, WA | PacifiCorp West (PACW) | 19.5 GWh | Aug 2006 | Sep 2024 | Water |
| Youngs Creek Hydroelectric Project | PUD No 1 of Snohomish County | Monroe, WA | Bonneville Power Administration (BPAT) | 18.7 GWh | Oct 2011 | Dec 2024 | Water |
| PEC Headworks | PUD No 2 of Grant County | Moses Lake, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 17.8 GWh | Aug 1990 | Oct 2024 | Water |
| Calligan Creek Hydroelectric Project | PUD No 1 of Snohomish County | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 17.2 GWh | Jan 2018 | Dec 2024 | Water |
| Darrington | Hampton Lumber Mills - Washington Inc | Darrington, WA | Bonneville Power Administration (BPAT) | 17.0 GWh | Jan 2007 | Dec 2024 | Wood/Wood Waste Solids |
| Russell D Smith | Columbia Basin Hydropower | Othello, WA | Bonneville Power Administration (BPAT) | 13.4 GWh | Aug 1982 | Sep 2024 | Water |
| Weeks Falls | Eagle Creek Renewable Energy, LLC | North Bend, WA | Puget Sound Energy, Inc. (PSEI) | 13.1 GWh | May 1990 | Dec 2024 | Water |
| Coastal Energy Project | Coastal Community Action Program | Aberdeen, WA | Bonneville Power Administration (BPAT) | 11.6 GWh | May 2010 | Dec 2023 | Wind |
| Penstemon Solar Project | Greenbacker Renewable Energy Corporation | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 10.7 GWh | Dec 2021 | Dec 2024 | Solar |
| Urtica Solar Project | Greenbacker Renewable Energy Corporation | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 10.6 GWh | Oct 2022 | Dec 2024 | Solar |
| Camas Solar Project | Greenbacker Renewable Energy Corporation | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 9.7 GWh | May 2022 | Dec 2024 | Solar |
| Black Creek | Black Creek Hydro Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 9.7 GWh | Jan 1994 | Nov 2024 | Water |
| West Point Treatment Plant | King County Dept-Natural Res | Seattle, WA | Seattle City Light (SCL) | 9.6 GWh | May 2012 | Dec 2024 | Other Biomass Gas |
| Meyers Falls | Hydro Technology Systems Inc | Kettle Falls, WA | Avista Corporation (AVA) | 9.2 GWh | May 1915 | Dec 2024 | Water |
| Eltopia Branch Canal 4.6 | Columbia Basin Hydropower | Pasco, WA | Bonneville Power Administration (BPAT) | 8.0 GWh | Apr 1983 | Oct 2024 | Water |
| Sheep Creek Hydro | Sheep Creek Hydro Inc | Northport, WA | Avista Corporation (AVA) | 7.8 GWh | May 1986 | Dec 2024 | Water |
| Twin Reservoirs | Walla Walla City of | Walla Walla, WA | Bonneville Power Administration (BPAT) | 7.3 GWh | Mar 1988 | Dec 2024 | Water |
| Horn Rapids Solar, Storage and Training | Energy Northwest | Richland, WA | Bonneville Power Administration (BPAT) | 6.6 GWh | Sep 2020 | Dec 2023 | Solar : 86.8% Electricity used for energy storage : 13.2% |
| University of Washington Power Plant | University of Washington | Seattle, WA | Seattle City Light (SCL) | 6.2 GWh | Dec 1968 | Mar 2025 | Natural Gas : 97.8% Distillate Fuel Oil : 2.2% |
| Cedar Falls (WA) | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 6.2 GWh | Oct 1921 | Dec 2024 | Water |
| Lilliwaup Falls Generating | William G. Reed Jr | Lilliwaup, WA | Bonneville Power Administration (BPAT) | 5.4 GWh | Apr 1986 | Dec 2024 | Water |
| Potholes East Canal 66.0 | Columbia Basin Hydropower | Pasco, WA | Bonneville Power Administration (BPAT) | 4.8 GWh | Feb 1985 | Oct 2024 | Water |
| Skookumchuck | TransAlta Centralia Gen LLC | Tenino, WA | Bonneville Power Administration (BPAT) | 3.2 GWh | Aug 1990 | Dec 2023 | Water |
| Swauk Wind LLC | Gamesa Wind US LLC | Thorp, WA | Puget Sound Energy, Inc. (PSEI) | 2.4 GWh | Nov 2012 | Nov 2024 | Wind |
| Northeast (WA) | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 1.2 GWh | Nov 1978 | Dec 2024 | Natural Gas |
| Rocky Brook Hydroelectric | Rocky Brook Electric Inc | Brinnon, WA | Bonneville Power Administration (BPAT) | 540.0 MWh | Nov 1985 | Dec 2024 | Water |
| Arlington Microgrid | PUD No 1 of Snohomish County | Arlington, WA | Bonneville Power Administration (BPAT) | 532.0 MWh | May 2019 | Dec 2024 | Solar |
| Crystal Mountain | Puget Sound Energy Inc | Greenwater, WA | Puget Sound Energy, Inc. (PSEI) | 270.0 MWh | Nov 1969 | Feb 2025 | Distillate Fuel Oil |
| Cedar Hills | Bio Energy Washington, LLC | Maple Valley, WA | Puget Sound Energy, Inc. (PSEI) | 78.0 MWh | Mar 2009 | Dec 2024 | Distillate Fuel Oil |
| Grimes Way | Washington State University | Pullman, WA | Avista Corporation (AVA) | 69.0 MWh | Dec 2004 | Mar 2025 | Distillate Fuel Oil : 53.6% Natural Gas : 46.4% |
Browse Power Plants By Washington Counties
Figures are based on March 2025 generation numbers.| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Grant County, WA | # 1 | 9 | 24.3 TWh |
| Chelan County, WA | # 2 | 5 | 11.0 TWh |
| Benton County, WA | # 3 | 7 | 10.2 TWh |
| Douglas County, WA | # 4 | 1 | 9.5 TWh |
| Lewis County, WA | # 5 | 8 | 7.3 TWh |
| Klickitat County, WA | # 6 | 16 | 5.6 TWh |
| Whatcom County, WA | # 7 | 13 | 5.1 TWh |
| Columbia County, WA | # 8 | 4 | 3.4 TWh |
| Cowlitz County, WA | # 9 | 6 | 3.4 TWh |
| Pend Oreille County, WA | # 10 | 3 | 3.3 TWh |
| Walla Walla County, WA | # 11 | 4 | 3.2 TWh |
| Grays Harbor County, WA | # 12 | 6 | 3.1 TWh |
| Pierce County, WA | # 13 | 14 | 2.4 TWh |
| Skagit County, WA | # 14 | 4 | 1.8 TWh |
| Whitman County, WA | # 15 | 6 | 1.7 TWh |
| Clark County, WA | # 16 | 2 | 1.6 TWh |
| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Kittitas County, WA | # 17 | 9 | 1.2 TWh |
| Garfield County, WA | # 18 | 2 | 852.0 GWh |
| Lincoln County, WA | # 19 | 2 | 641.5 GWh |
| Spokane County, WA | # 20 | 7 | 559.3 GWh |
| Skamania County, WA | # 21 | 1 | 525.6 GWh |
| Adams County, WA | # 22 | 4 | 464.8 GWh |
| Thurston County, WA | # 23 | 4 | 447.3 GWh |
| Snohomish County, WA | # 24 | 9 | 401.9 GWh |
| King County, WA | # 25 | 12 | 367.3 GWh |
| Stevens County, WA | # 26 | 4 | 352.1 GWh |
| Mason County, WA | # 27 | 3 | 304.6 GWh |
| Yakima County, WA | # 28 | 12 | 96.6 GWh |
| Clallam County, WA | # 29 | 3 | 37.5 GWh |
| Jefferson County, WA | # 30 | 3 | 26.8 GWh |
| Franklin County, WA | # 31 | 3 | 12.8 GWh |