Power plants in Yakima County, Washington

6 operating power plants in Yakima County, Washington, with 190 MW of nameplate capacity, largest first. From EIA-860M, August 2026.

Plants

Nameplate capacity

190 MW

Net generation, 2025

246 GWh

5 of 6 plants reported

Largest

Ostrea Solar, LLC

80 MW

Largest power plants in Yakima County

#	Plant	MW	2025 net generation, GWhGWh, 2025	Capacity factor	Operator
1	Ostrea Solar, LLCSolar	80	–	–	Cypress Creek Renewables
2	Goose Prairie SolarSolar	80	177	25.3%	Goose Prairie Solar LLC
3	Tieton Dam Hydro Electric ProjectHydro	14	24.2	20.0%	City of Burbank Water and Power - (CA)
4	RozaHydro	13	38.2	33.8%	U S Bureau of Reclamation
5	CowicheHydro	1.7	3.4	22.5%	Yakima-Tieton Irrigation Dist
6	Orchard Avenue 1Hydro	1.6	2.9	20.9%	Yakima-Tieton Irrigation Dist

MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources

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Other counties in Washington

King County11 plants · 152 MW Klickitat County11 plants · 1,708 MW Whatcom County11 plants · 1,717 MW Kittitas County7 plants · 483 MW Spokane County7 plants · 192 MW Lewis County6 plants · 1,883 MW Pierce County6 plants · 638 MW Benton County5 plants · 1,322 MW Cowlitz County5 plants · 696 MW

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