Power plants in Wyoming

Wyoming has 71 power plants of 1 MW or more in the 2025 EIA-860 data, with 12.7 GW of nameplate capacity, the 36th-largest total among the 50 states and DC. Coal accounts for 43% of that capacity. The biggest single site is Jim Bridger at 2,326 MW. Units that came online from 2020 to 2025 add 3,393 MW, led by wind at 96%. Units retired since 2016 at plants still operating total 11.4 MW, most of it natural gas.

Coal5,530 MW43%
Wind4,707 MW37%
Natural gas1,930 MW15%
Hydroelectric303 MW2.4%
Solar242 MW1.9%
Other sources17 MW0.1%
Oil and petroleum5.8 MW0.0%

What is running, by the decade it came online

CoalNatural gasOil and petroleumHydroelectricWindSolarOther sources

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	Jim Bridger	Natural gas	2,326 MW	1974	PacifiCorp
2	Laramie River Station	Coal	1,863 MW	1981	Basin Electric Power Coop
3	Dave Johnston	Coal	817 MW	1959	PacifiCorp
4	Naughton	Coal	707 MW	1963	PacifiCorp
5	Rock Creek Wind	Wind	590 MW	2025	PacifiCorp
6	TB Flats	Wind	503 MW	2021	PacifiCorp
7	Dry Fork Station	Coal	484 MW	2011	Basin Electric Power Coop
8	Cedar Springs Wind IV	Wind	390 MW	2025	Cedar Springs Wind IV, LLC
9	Wyodak	Coal	362 MW	1978	PacifiCorp
10	Boswell Wind	Wind	330 MW	2024	Boswell Wind, LLC
11	Ekola Flats	Wind	251 MW	2020	PacifiCorp
12	Roundhouse Wind Energy Project	Wind	226 MW	2020	Roundhouse Renewable Energy, LLC
13	Cedar Springs I	Wind	200 MW	2020	Cedar Springs Wind, LLC
14	Cedar Springs II	Wind	200 MW	2020	PacifiCorp
15	Top of the World Windpower Project	Wind	200 MW	2010	Deriva Energy
16	Glenrock	Wind	166 MW	2008	PacifiCorp
17	South Cheyenne Solar	Solar	150 MW	2024	Southern Power Co
18	Seven Mile Hill	Wind	146 MW	2008	PacifiCorp
19	Shute Creek Facility	Natural gas	144 MW	2005	Exxon Mobil Production Co
20	TransAlta Wyoming Wind	Wind	144 MW	2003	TransAlta Wyoming Wind LLC
21	Cheyenne Prairie Generating Station	Natural gas	140 MW	2014	Black Hills Service Company LLC
22	Foote Creek Rim	Wind	135 MW	2024	PacifiCorp
23	Cedar Springs III	Wind	133 MW	2020	Cedar Springs Wind III, LLC
24	Neil Simpson II	Coal	130 MW	1995	Black Hills Power, Inc.
25	Dunlap	Wind	130 MW	2010	PacifiCorp

All 71 plants in the finder

Largest plant for each main fuel

Main fuel	Plants	Capacity	Largest plant	Its capacity
Coal	11	4,735 MW	Laramie River Station	1,863 MW
Wind	28	4,707 MW	Rock Creek Wind	590 MW
Natural gas	10	2,730 MW	Jim Bridger	2,326 MW
Hydroelectric	16	303 MW	Fremont Canyon	66.8 MW
Solar	2	242 MW	South Cheyenne Solar	150 MW
Other sources	2	13.5 MW	Simplot Phosphates	11.5 MW
Oil and petroleum	2	4.7 MW	Lake (WY)	2.7 MW

Balancing areas

Area	Plants	Capacity
PacifiCorp East	33	8,278 MW
WAPA Rocky Mountain	19	4,082 MW
WAPA Upper Great Plains West	15	369 MW
NorthWestern Energy	2	4.7 MW
Bonneville Power Administration	2	3.2 MW

Biggest operators here

Operator	Plants	Capacity
PacifiCorp	15	6,605 MW
Basin Electric Power Coop	5	2,407 MW
Black Hills Power, Inc.	5	471 MW
Cedar Springs Wind IV, LLC	1	390 MW
Deriva Energy	4	370 MW
Boswell Wind, LLC	1	330 MW
U S Bureau of Reclamation	13	297 MW
Roundhouse Renewable Energy, LLC	1	226 MW
Cedar Springs Wind, LLC	1	200 MW
Black Hills Service Company LLC	2	192 MW