Power plants in Oregon

Oregon has 302 power plants of 1 MW or more in the 2025 EIA-860 data, with 19.0 GW of nameplate capacity, the 27th-largest total among the 50 states and DC. Hydroelectric accounts for 44% of that capacity. The biggest single site is John Day at 2,160 MW. Units that came online from 2020 to 2025 add 2,188 MW, led by solar at 41%. Units retired since 2016 at plants still operating total 43.4 MW, most of it biomass and waste.

Hydroelectric8,360 MW44%
Natural gas4,353 MW23%
Wind4,181 MW22%
Solar1,295 MW6.8%
Battery storage523 MW2.7%
Biomass and waste285 MW1.5%
Geothermal36.7 MW0.2%
Oil and petroleum6.6 MW0.0%

What is running, by the decade it came online

Natural gasOil and petroleumHydroelectricWindSolarBattery storageGeothermalBiomass and waste

Columns above the line show capacity still operating in 2025, stacked by fuel. Below the line: capacity retired in each decade at plants that still operate.

The 25 largest plants

Rank	Plant	Runs on	Capacity	First unit	Operator
1	John Day	Hydroelectric	2,160 MW	1968	USACE Northwestern Division
2	The Dalles	Hydroelectric	1,820 MW	1957	USACE Northwestern Division
3	Bonneville	Hydroelectric	1,162 MW	1938	USACE Northwestern Division
4	McNary	Hydroelectric	990 MW	1953	USACE Northwestern Division
5	Hermiston Power Partnership	Natural gas	689 MW	2002	Hermiston Power Partnership
6	Hermiston Generating Plant	Natural gas	621 MW	1996	Hermiston Generating Co LP
7	Beaver	Natural gas	611 MW	1974	Portland General Electric Co
8	Klamath Cogeneration Plant	Natural gas	502 MW	2001	Klamath Energy LLC
9	Carty Generating Station	Natural gas	500 MW	2016	Portland General Electric Co
10	Port Westward	Natural gas	483 MW	2007	Portland General Electric Co
11	Biglow Canyon Wind Farm	Wind	450 MW	2007	Portland General Electric Co
12	Hells Canyon	Hydroelectric	411 MW	1967	Idaho Power Co
13	Round Butte	Hydroelectric	372 MW	1964	Portland General Electric Co
14	Klondike Windpower III	Wind	298 MW	2007	Avangrid Power LLC
15	Coyote Springs	Natural gas	296 MW	1995	Portland General Electric Co
16	Horseshoe Bend Wind LLC	Wind	290 MW	2012	Shepherds Flat Wind LLC
17	South Hurlburt Wind LLC	Wind	290 MW	2012	Shepherds Flat Wind LLC
18	Coyote Springs II	Natural gas	287 MW	2003	Avista Corp
19	Wheatridge Hybrid	Wind	280 MW	2020	Wheatridge Wind Holdings, LLC
20	North Hurlburt Wind LLC	Wind	265 MW	2012	Shepherds Flat Wind LLC
21	Port Westward Unit 2	Natural gas	226 MW	2014	Portland General Electric Co
22	Golden Hill Wind	Wind	201 MW	2022	Avangrid Power LLC
23	Montague Wind Power Facility LLC	Wind	200 MW	2019	Avangrid Power LLC
24	Seaside BESS	Battery storage	200 MW	2025	Portland General Electric Co
25	Sundial (Troutdale) BESS	Battery storage	200 MW	2024	Troutdale Grid, LLC

All 302 plants in the finder

Largest plant for each main fuel

Main fuel	Plants	Capacity	Largest plant	Its capacity
Hydroelectric	63	8,360 MW	John Day	2,160 MW
Natural gas	13	4,360 MW	Hermiston Power Partnership	689 MW
Wind	50	4,261 MW	Biglow Canyon Wind Farm	450 MW
Solar	148	1,246 MW	Montague Solar	162 MW
Battery storage	4	492 MW	Seaside BESS	200 MW
Biomass and waste	22	285 MW	Dillard Complex	51.5 MW
Geothermal	2	36.7 MW	Neal Hot Springs Geothermal Project	33 MW

Balancing areas

Area	Plants	Capacity
Bonneville Power Administration	59	9,336 MW
Portland General Electric	101	3,958 MW
Avangrid Renewables LLC	15	2,298 MW
PacifiCorp West	101	1,876 MW
Idaho Power	25	883 MW
Gridforce Energy Management, LLC	1	689 MW

Biggest operators here

Operator	Plants	Capacity
USACE Northwestern Division	13	6,590 MW
Portland General Electric Co	19	3,605 MW
Avangrid Power LLC	14	1,736 MW
Shepherds Flat Wind LLC	3	845 MW
Hermiston Power Partnership	1	689 MW
Hermiston Generating Co LP	1	621 MW
Klamath Energy LLC	2	619 MW
Idaho Power Co	2	601 MW
PacifiCorp	18	364 MW
Avista Corp	1	287 MW