Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| 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% |
| West Point Treatment Plant | King County Dept-Natural Res | Seattle, WA | Seattle City Light (SCL) | 7.2 GWh | May 2012 | Dec 2023 | Other Biomass Gas |
| 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 |
| 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 |
| 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 |
| 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 |
| Hancock Creek Hydroelectric Project | PUD No 1 of Snohomish County | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 16.6 GWh | Jan 2018 | Dec 2023 | Water |
| Snoqualmie 2 | Puget Sound Energy Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 104.4 GWh | Dec 1956 | Dec 2023 | Water |
| Snoqualmie | Puget Sound Energy Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 61.9 GWh | Dec 1897 | Dec 2023 | Water |
| Calligan Creek Hydroelectric Project | PUD No 1 of Snohomish County | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 9.4 GWh | Jan 2018 | Dec 2023 | Water |
| Black Creek | Black Creek Hydro Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 8.6 GWh | Jan 1994 | Dec 2023 | Water |
| Upper Falls | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 59.9 GWh | Mar 1922 | Dec 2023 | Water |
| Northeast (WA) | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 112.0 MWh | Nov 1978 | Dec 2023 | Natural Gas |
| Boulder Park | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 63.9 GWh | Apr 2002 | Dec 2023 | Natural Gas |
| Monroe Street | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 89.1 GWh | Nov 1992 | Dec 2023 | Water |
| Upriver Dam Hydro Plant | City of Spokane | Spokane, WA | Avista Corporation (AVA) | 36.8 GWh | Dec 1935 | 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% |
| H M Jackson | PUD No 1 of Snohomish County | Sultan, WA | Bonneville Power Administration (BPAT) | 298.0 GWh | May 1984 | Dec 2023 | Water |
| Sumas Power Plant | Puget Sound Energy Inc | Sumas, WA | Puget Sound Energy, Inc. (PSEI) | 834.9 GWh | Feb 1993 | Dec 2023 | Natural Gas |
| 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% |
| Frederickson Power LP | Frederickson Power LP | Tacoma, WA | Bonneville Power Administration (BPAT) | 1.8 TWh | Jul 2002 | Dec 2023 | Natural Gas |
| WestRock (WA) | WestRock (WA) | Tacoma, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 196.3 GWh | Jun 2009 | Nov 2023 | Black Liquor : 52.1% Wood/Wood Waste Solids : 44.1% Natural Gas : 3.2% Waste/Other Oil : 0.5% |
| 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) | 6.0 GWh | Nov 2012 | Dec 2023 | Wind |
| Cowiche | Yakima-Tieton Irrigation Dist | Tieton, WA | PacifiCorp West (PACW) | 3.4 GWh | Feb 1987 | Oct 2023 | Water |
| FPL Energy Vansycle LLC (WA) | FPL Energy Vansycle LLC | Touchet, WA | Bonneville Power Administration (BPAT) | 331.4 GWh | Nov 2001 | Dec 2023 | Wind |
| 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 |
| Twin Reservoirs | Walla Walla City of | Walla Walla, WA | Bonneville Power Administration (BPAT) | 8.1 GWh | Mar 1988 | 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 |
| 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 |
| 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 |
| Roza | U S Bureau of Reclamation | Yakima, WA | Bonneville Power Administration (BPAT) | 54.5 GWh | Jul 1958 | Dec 2023 | Water |
| Orchard Avenue 1 | Yakima-Tieton Irrigation Dist | Yakima, WA | PacifiCorp West (PACW) | 2.6 GWh | Feb 1987 | Oct 2023 | Water |
| Yelm | City of Centralia - (WA) | Yelm, WA | Bonneville Power Administration (BPAT) | 26.2 GWh | Nov 1930 | Dec 2023 | Water |
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 |