Power plants in Ohio

Ohio has 215 power plants of 1 MW or more in the 2025 EIA-860 data, with 34.4 GW of nameplate capacity, the 12th-largest total among the 50 states and DC. Natural gas accounts for 54% of that capacity. The biggest single site is Gavin Power, LLC at 2,600 MW. Units that came online from 2020 to 2025 add 8,711 MW, led by solar at 50%. Units retired since 2016 at plants still operating total 154 MW, most of it natural gas.

Natural gas18,480 MW54%
Coal6,822 MW20%
Solar4,486 MW13%
Nuclear2,237 MW6.5%
Wind1,100 MW3.2%
Oil and petroleum738 MW2.1%
Other sources249 MW0.7%
Hydroelectric123 MW0.4%
Biomass and waste110 MW0.3%
Battery storage45.8 MW0.1%

What is running, by the decade it came online

NuclearCoalNatural gasOil and petroleumHydroelectricWindSolarBattery storageBiomass and wasteOther 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	Gavin Power, LLC	Coal	2,600 MW	1974	Gavin Power, LLC
2	Guernsey Power Station	Natural gas	2,055 MW	2023	Guernsey Power Station LLC
3	Cardinal	Coal	1,880 MW	1967	Cardinal Operating Company
4	Hanging Rock Energy Facility	Natural gas	1,430 MW	2003	Dynegy Hanging Rock Energy Facility
5	Perry	Nuclear	1,312 MW	1987	Energy Harbor Nuclear Generation LLC
6	South Field Energy	Natural gas	1,210 MW	2021	South Field Energy, LLC
7	Miami Fort	Coal	1,181 MW	1971	Luminant Miami Fort
8	Kyger Creek	Coal	1,086 MW	1955	Ohio Valley Electric Corp
9	Oregon Clean Energy Center	Natural gas	1,062 MW	2017	Oregon Clean Energy Center
10	Rolling Hills Generating	Natural gas	978 MW	2003	Rolling Hills Generating LLC
11	Middletown- Ohio	Natural gas	962 MW	2018	Clean Energy Future-Lordstown, LLC
12	Davis Besse	Nuclear	925 MW	1977	Energy Harbor Nuclear Generation LLC
13	Waterford Power, LLC	Natural gas	922 MW	2003	Waterford Power, LLC
14	Carroll County Energy	Natural gas	832 MW	2017	Carroll County Energy LLC
15	Troy Energy LLC	Natural gas	796 MW	2002	Troy Energy LLC
16	Fremont Energy Center	Natural gas	740 MW	2012	American Mun Power-Ohio, Inc
17	Washington Energy Facility	Natural gas	715 MW	2002	Dynegy Washington Energy Facility
18	Madison	Natural gas	692 MW	2000	Duke Energy Indiana, LLC
19	Tait Electric Generating Station	Natural gas	681 MW	1967	Kimura Power LLC
20	Dresden Energy Facility	Natural gas	678 MW	2012	Appalachian Power Co
21	Robert P Mone Plant	Natural gas	597 MW	2002	Buckeye Power, Inc
22	Fox Squirrel Solar	Solar	577 MW	2023	EDF Renewable Asset Holdings, Inc.
23	Woodsdale	Natural gas	572 MW	1992	Duke Energy Kentucky Inc
24	Darby Power, LLC	Natural gas	564 MW	2001	Darby Power, LLC
25	West Lorain	Natural gas	556 MW	1973	Vermillion Power LLC

All 215 plants in the finder

Largest plant for each main fuel

Main fuel	Plants	Capacity	Largest plant	Its capacity
Natural gas	47	18.6 GW	Guernsey Power Station	2,055 MW
Coal	7	6,937 MW	Gavin Power, LLC	2,600 MW
Solar	73	4,483 MW	Fox Squirrel Solar	577 MW
Nuclear	2	2,237 MW	Perry	1,312 MW
Wind	22	1,104 MW	Blue Creek Wind Project	302 MW
Oil and petroleum	39	513 MW	FirstEnergy Bay Shore	187 MW
Other sources	4	249 MW	Cleveland Works	102 MW
Hydroelectric	4	123 MW	Greenup Hydro	70.2 MW
Biomass and waste	12	138 MW	Pixelle Specialty Solutions LLC - Chilli	92.8 MW
Battery storage	5	43.1 MW	Bowling Green Energy Storage Project	12 MW

Balancing areas

Area	Plants	Capacity
PJM Interconnection	215	34.4 GW

Biggest operators here

Operator	Plants	Capacity
Gavin Power, LLC	1	2,600 MW
Energy Harbor Nuclear Generation LLC	2	2,237 MW
Guernsey Power Station LLC	1	2,055 MW
Cardinal Operating Company	1	1,880 MW
Dynegy Hanging Rock Energy Facility	1	1,430 MW
South Field Energy, LLC	1	1,210 MW
Luminant Miami Fort	1	1,181 MW
Ohio Valley Electric Corp	1	1,086 MW
American Mun Power-Ohio, Inc	26	1,074 MW
Oregon Clean Energy Center	1	1,062 MW