Largest Power Plants in Washington

Washington has 172 power plants with a combined nameplate capacity of 31,538 MW. The table below ranks the 50 largest by installed capacity — these are the facilities with the most generation potential in the state. Nameplate capacity measures the maximum output under ideal conditions; actual generation depends on fuel cost, demand, and maintenance schedules.

For a complete list of all plants in the state, visit the Washington state page. To find plants near a specific address, use the address lookup.

#	Plant	State	Fuel	Capacity
1	Grand Coulee	Washington	Hydroelectric	6,809 MW
2	Chief Joseph	Washington	Hydroelectric	2,456 MW
3	Rocky Reach	Washington	Hydroelectric	1,300 MW
4	Wanapum	Washington	Hydroelectric	1,220 MW
5	Columbia Generating Station	Washington	Nuclear	1,200 MW
6	Boundary	Washington	Hydroelectric	1,119 MW
7	Priest Rapids	Washington	Hydroelectric	950 MW
8	Little Goose	Washington	Hydroelectric	810 MW
9	Lower Monumental	Washington	Hydroelectric	810 MW
10	Lower Granite	Washington	Hydroelectric	810 MW
11	Wells	Washington	Hydroelectric	774 MW
12	Transalta Centralia Generation	Washington	Coal	730 MW
13	Grays Harbor Energy Facility	Washington	Natural Gas	715 MW
14	Rock Island	Washington	Hydroelectric	629 MW
15	Ice Harbor	Washington	Hydroelectric	603 MW
16	Chehalis Generating Facility	Washington	Natural Gas	593 MW
17	Ross	Washington	Hydroelectric	450 MW
18	Fredonia (Wa)	Washington	Natural Gas	376 MW
19	Lower Snake River Wind Energy Project	Washington	Wind	343 MW
20	Mint Farm Generating Station	Washington	Natural Gas	319 MW
21	Frederickson Power Lp	Washington	Natural Gas	318 MW
22	Goldendale Generating Station	Washington	Natural Gas	303 MW
23	Mossyrock	Washington	Hydroelectric	300 MW
24	Ferndale Generating Station	Washington	Natural Gas	286 MW
25	Wild Horse	Washington	Wind	273 MW
26	Tucannon River Wind Farm	Washington	Wind	267 MW
27	Windy Flats Wind Project	Washington	Wind	262 MW
28	River Road Gen Plant	Washington	Natural Gas	248 MW
29	Swift 1	Washington	Hydroelectric	240 MW
30	Marengo Wind Plant	Washington	Wind	234 MW
31	Gorge	Washington	Hydroelectric	207 MW
32	White Creek Wind Farm	Washington	Wind	204 MW
33	Big Horn Wind Project	Washington	Wind	199 MW
34	Diablo	Washington	Hydroelectric	182 MW
35	Frederickson	Washington	Natural Gas	178 MW
36	Fpl Energy Vansycle Llc (Wa)	Washington	Wind	177 MW
37	Encogen	Washington	Natural Gas	176 MW
38	Whitehorn	Washington	Natural Gas	169 MW
39	Mayfield	Washington	Hydroelectric	162 MW
40	Hopkins Ridge Wind	Washington	Wind	157 MW
41	Juniper Canyon I Wind Project	Washington	Wind	151 MW
42	Lund Hill Solar	Washington	Solar	150 MW
43	Rattlesnake Flat	Washington	Wind	144 MW
44	Hf Sinclair Puget Sound Refining	Washington	Natural Gas	140 MW
45	Tuolumne Wind Project	Washington	Wind	136 MW
46	Merwin	Washington	Hydroelectric	136 MW
47	Skookumchuck Wind Facility	Washington	Wind	136 MW
48	Yale	Washington	Hydroelectric	134 MW
49	Sumas Power Plant	Washington	Natural Gas	126 MW
50	H M Jackson	Washington	Hydroelectric	112 MW

Cite this page

PowerPlantsNearMe.com. (2026). Largest Power Plants in Washington. Derived from EIA Form 860, EIA Form 923, and EPA eGRID. Retrieved from https://powerplantsnearme.com/largest-power-plants/washington

Click the citation to select it for copying. For bulk data, see the data downloads page.

Largest Power Plants in Washington

Cite this page

More rankings