How many natural gas power plants are in Washington?

Washington has 18 operating utility-scale natural gas power plants with 4.0 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest natural gas power plant in Washington?

Grays Harbor Energy Facility in Grays Harbor County, Washington is the largest, at 715 MW. It came online in 2008.

How many natural gas power plants were built in Washington in 2025?

0 natural gas power plants came online in Washington in 2025, with 0 MW of capacity.

Who is developing natural gas power plants in Washington?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Natural gas power plants in Washington

Washington has 18 operating natural gas power plants with 4.0 GW of capacity.

Operating18

See planned natural gas power plants in Washington

Updated monthly. Last updated November 2026.

Under 250 MW250–999 MW1 GW and up

Updated monthly. Last updated November 2026.

Washington had 17 natural gas power plants online in 2016 and 18 in 2026

2016’162017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26

Natural gas power plants online at the end of each year. Source: EIA-860M, compiled by Cleanview.

The 10 largest natural gas power plants in Washington

Operating, by capacity

#	Natural gas power plant	County	Year online	Capacity
1	Grays Harbor Energy Facility	Grays Harbor County	2008	715 MW
2	Chehalis Generating Facility	Lewis County	2003	593 MW
3	Fredonia (WA)	Skagit County	2001	376 MW
4	Mint Farm Generating Station	Cowlitz County	2008	319 MW
5	Frederickson Power LP	Pierce County	2002	318 MW
6	Goldendale Generating Station	Klickitat County	2004	303 MW
7	Ferndale Generating Station	Whatcom County	1994	286 MW
8	River Road Gen Plant	Clark County	1997	248 MW
9	Frederickson	Pierce County	1981	178 MW
10	Encogen	Whatcom County	1993	176 MW

Natural gas power plants that came online most recently in Washington

Newest first

#	Natural gas power plant	County	Year online	Capacity
1	University of Washington Power Plant	King County	2023	3 MW
2	Grays Harbor Energy Facility	Grays Harbor County	2008	715 MW
3	Mint Farm Generating Station	Cowlitz County	2008	319 MW
4	Grimes Way	Whitman County	2005	2 MW
5	Goldendale Generating Station	Klickitat County	2004	303 MW
6	Chehalis Generating Facility	Lewis County	2003	593 MW
7	Frederickson Power LP	Pierce County	2002	318 MW
8	Kettle Falls Generating Station	Stevens County	2002	7 MW
9	Boulder Park	Spokane County	2002	25 MW
10	Fredonia (WA)	Skagit County	2001	376 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks natural gas power plants

Operating natural gas power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about natural gas power plants in Washington

How many natural gas power plants are in Washington?: Washington has 18 operating utility-scale natural gas power plants with 4.0 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest natural gas power plant in Washington?: Grays Harbor Energy Facility in Grays Harbor County, Washington is the largest, at 715 MW. It came online in 2008.
How many natural gas power plants were built in Washington in 2025?: 0 natural gas power plants came online in Washington in 2025, with 0 MW of capacity.
Who is developing natural gas power plants in Washington?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.