Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Mint Farm Generating Station | Puget Sound Energy Inc | Longview, WA | Puget Sound Energy, Inc. (PSEI) | 1.7 TWh | Dec 2007 | Dec 2022 | Natural Gas |
| 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 |
| 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 |
| Marengo Wind Plant | PacifiCorp | Dayton, WA | PacifiCorp West (PACW) | 599.0 GWh | Jul 2007 | Dec 2023 | Wind |
| Merwin | PacifiCorp | Ariel, WA | PacifiCorp West (PACW) | 507.3 GWh | Jun 1931 | Dec 2023 | Water |
| Main Canal Headworks | Columbia Basin Hydropower | Coulee City, WA | Avista Corporation (AVA) | 124.1 GWh | Dec 1986 | Oct 2023 | Water |
| Monroe Street | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 96.3 GWh | Nov 1992 | Dec 2023 | Water |
| McNary Dam Fish Attraction Project | Northern Wasco County PUD | Plymouth, WA | Bonneville Power Administration (BPAT) | 78.3 GWh | Oct 1997 | Dec 2023 | Water |
| McKinley Paper Co. - Washington Mill | McKinley Paper Co. - Washington Mill | Port Angeles, WA | Bonneville Power Administration (BPAT) | 37.7 GWh | Sep 2013 | Dec 2023 | Wood/Wood Waste Solids : 99.8% |
| Meyers Falls | Hydro Technology Systems Inc | Kettle Falls, WA | Avista Corporation (AVA) | 10.4 GWh | May 1915 | Dec 2023 | Water |
Browse Power Plants By Washington Counties
Figures are based on June 2024 generation numbers.| County | State Rank | Active Plants | Jun 2024 Generation |
|---|---|---|---|
| Grant County, WA | # 1 | 8 | 25.3 TWh |
| Douglas County, WA | # 2 | 2 | 13.5 TWh |
| Benton County, WA | # 3 | 6 | 10.6 TWh |
| Chelan County, WA | # 4 | 4 | 7.7 TWh |
| Lewis County, WA | # 5 | 8 | 7.6 TWh |
| Whatcom County, WA | # 6 | 13 | 5.7 TWh |
| Klickitat County, WA | # 7 | 15 | 5.2 TWh |
| Grays Harbor County, WA | # 8 | 6 | 3.7 TWh |
| Pend Oreille County, WA | # 9 | 3 | 3.6 TWh |
| Walla Walla County, WA | # 10 | 4 | 3.4 TWh |
| Columbia County, WA | # 11 | 4 | 3.4 TWh |
| Cowlitz County, WA | # 12 | 6 | 3.3 TWh |
| Skagit County, WA | # 13 | 4 | 2.6 TWh |
| Pierce County, WA | # 14 | 13 | 2.3 TWh |
| Clark County, WA | # 15 | 2 | 1.9 TWh |
| Whitman County, WA | # 16 | 6 | 1.8 TWh |
| County | State Rank | Active Plants | Jun 2024 Generation |
|---|---|---|---|
| Kittitas County, WA | # 17 | 9 | 1.2 TWh |
| Garfield County, WA | # 18 | 1 | 838.1 GWh |
| Lincoln County, WA | # 19 | 2 | 640.2 GWh |
| Skamania County, WA | # 20 | 1 | 593.9 GWh |
| Spokane County, WA | # 21 | 7 | 547.3 GWh |
| Snohomish County, WA | # 22 | 8 | 492.7 GWh |
| Thurston County, WA | # 23 | 3 | 471.6 GWh |
| Adams County, WA | # 24 | 4 | 464.3 GWh |
| Stevens County, WA | # 25 | 4 | 384.8 GWh |
| King County, WA | # 26 | 12 | 369.6 GWh |
| Mason County, WA | # 27 | 3 | 313.3 GWh |
| Yakima County, WA | # 28 | 12 | 112.1 GWh |
| Clallam County, WA | # 29 | 3 | 37.7 GWh |
| Franklin County, WA | # 30 | 3 | 18.0 GWh |
| Jefferson County, WA | # 31 | 2 | 219.0 MWh |