Directory of Electric Companies in the United States
| Company Name | Company Location | Utility Type | Power Plants | EIA Annual Generation | EIA Latest Generation | FERC Lastest Date | FERC 2024Q4 Seller Transactions | FERC 2024Q4 Buyer Transactions |
|---|---|---|---|---|---|---|---|---|
| Onward Energy | New York, NY | Independent Power Producer | 41 | 5.9 TWh | Apr 2025 | - | ||
| Onyx Asset Services Group | New York, NY | Independent Power Producer | 27 | 67.1 GWh | Dec 2024 | - | ||
| Open Mountain Energy LLC. | LEHI, UT | Independent Power Producer | 1 | 19.5 GWh | Dec 2024 | - | ||
| Oppidum Renewables USA, LLC | Pittsburgh, PA | Independent Power Producer | 18 | 133.2 GWh | Dec 2024 | - | ||
| Optimum Wind 3 LLC | Irvington, NY | Independent Power Producer | 1 | 11.2 GWh | Dec 2024 | - | ||
| Optimum Wind 4 LLC | Irvington, NY | Independent Power Producer | 1 | 11.3 GWh | Dec 2024 | - | ||
| Optimum Wind 5 LLC | Irvington, NY | Independent Power Producer | 1 | 9.5 GWh | Dec 2024 | - | ||
| Optimum Wind 6 LLC | Irvington, NY | Independent Power Producer | 1 | 9.6 GWh | Dec 2024 | - | ||
| Optimum Wind 7 LLC | Irvington, NY | Independent Power Producer | 1 | 12.0 GWh | Dec 2024 | - | ||
| Or Solar 2, LLC | Jersey City, NJ | Independent Power Producer | 1 | 13.2 GWh | Dec 2024 | - | ||
| Orange And Rockland Utilities, Inc. | New York, NY | - | - | - | Apr 2025 | $5.46M | $1.93M | |
| Orange County Sanitation DIST | Fountain Valley, CA | Political Subdivision | 2 | 109.0 GWh | Dec 2024 | - | ||
| Orange Grove Energy LP | Schaumburg, IL | Independent Power Producer | 1 | 23.9 GWh | Dec 2024 | Mar 2025 | $3.07M | |
| Orangeville Energy Storage LLC | Chicago, IL | - | - | - | Apr 2025 | $311.08k | ||
| Orbit Bloom Energy, LLC | Washington, DC | - | - | - | Mar 2025 | $1.78M | ||
| Orcal Geothermal, Inc | Reno, NV | Independent Power Producer | 2 | 755.2 GWh | Dec 2024 | - | ||
| Orchard Ranch Solar, LLC | Boston, MA | Independent Power Producer | 1 | 47.4 GWh | Apr 2025 | - | ||
| Orchard Windfarm, LLC | New York, NY | Independent Power Producer | 4 | 122.2 GWh | Dec 2024 | - | ||
| Oregon Clean Energy Center | Oregon, OH | Independent Power Producer | 1 | 6.2 TWh | Apr 2025 | Apr 2025 | $50.85M | |
| Oregon Environmental Industries LLC | Medford, OR | Independent Power Producer | 1 | 20.3 GWh | Dec 2024 | - | ||
| Oregon State University | Corvallis, OR | State-Owned Utility | 1 | 46.8 GWh | Apr 2025 | - | ||
| Organic Energy Solutions, Inc. | San Bernardino, CA | Independent Power Producer | 1 | 4.9 GWh | Dec 2024 | - | ||
| Origin Wind Energy, LLC | Andover, MA | - | - | - | Mar 2025 | $3.52M | ||
| Origis Energy USA, Inc | Miami, FL | Independent Power Producer | 1 | 25.5 GWh | Dec 2023 | - | ||
| Orion Community Solar | Scottsdale, AZ | Independent Power Producer | 1 | 5.0 GWh | Dec 2024 | - | ||
| Orion Energy Group LLC | Oakland, CA | Commercial | 2 | 832.4 GWh | Dec 2024 | - | ||
| Orion Engineered Carbons | Spring, TX | Industrial | 3 | 146.8 GWh | Dec 2024 | - | ||
| Orion Solar I LLC | Independent Power Producer | 1 | 29.5 GWh | Dec 2024 | - | |||
| Orion Solar II, LLC | San Francisco, CA | Independent Power Producer | 1 | 19.8 GWh | Dec 2024 | - | ||
| Orlando Cogen Ltd LP | Orlando, FL | Independent Power Producer | - | 1.1 TWh | Dec 2023 | - | ||
| Orlando Utilities COMM | Orlando, FL | Municipally-Owned Utility | 5 | 4.3 TWh | Apr 2025 | Apr 2025 | $12.13M | |
| Ormat Cove Fort LLC | Reno, NV | Independent Power Producer | 2 | 136.1 GWh | Dec 2024 | Mar 2025 | $2.36M | |
| Ormat Dixie Valley LLC | Reno, NV | - | - | - | Mar 2025 | $5.12M | ||
| Ormat Nevada Inc. | Reno, NV | Independent Power Producer | 28 | 3.4 TWh | Apr 2025 | - | ||
| Ormat Salt Wells LLC | Reno, NV | Independent Power Producer | 1 | 76.9 GWh | Dec 2024 | - | ||
| Ormat Stillwater LLC | Reno, NV | Independent Power Producer | 1 | 140.1 GWh | Dec 2024 | Mar 2025 | $2.43M | |
| Ormat Stillwater Solar PV II, LLC | Reno, NV | Independent Power Producer | 1 | 26.1 GWh | Dec 2024 | Mar 2025 | $147.33k | |
| Ormesa LLC | Reno, NV | - | - | - | Mar 2025 | $5.41M | ||
| Ormond Beach Power, LLC | Houston, TX | Independent Power Producer | 1 | 50.3 GWh | Apr 2025 | Mar 2025 | $40.10M | |
| ORNI 14 LLC | Reno, NV | - | - | - | Mar 2025 | $1.64M | ||
| ORNI 18 LLC | Reno, NV | - | - | - | Mar 2025 | $284.43k | ||
| ORNI 34 LLC | Philadelphia, PA | - | - | - | Mar 2025 | $135.71k | ||
| ORNI 36 LLC | Reno, NV | - | - | - | Mar 2025 | $3.34M | ||
| ORNI 37 LLC | Luring, NV | Independent Power Producer | 1 | 103.8 GWh | Dec 2024 | Mar 2025 | $2.41M | |
| ORNI 39 LLC | Reno, NV | - | - | - | Mar 2025 | $14.70M | ||
| ORNI 41 LLC | Reno, NV | - | - | - | Mar 2025 | $6.94M | ||
| ORNI 43 LLC | Reno, NV | - | - | - | Mar 2025 | $6.52M | ||
| ORNI 47, LLC | Luning, NV | Independent Power Producer | 1 | 122.3 GWh | Dec 2024 | Mar 2025 | $3.32M | |
| ORNI 50 LLC | Reno, NV | - | - | - | Mar 2025 | $4.51M | ||
| Oroville Cogeneration LP | Independent Power Producer | - | 256.4 MWh | Dec 2023 | - | |||
| Orrtanna Power, LLC | Chicago, IL | Independent Power Producer | 1 | -124.5 MWh | Dec 2024 | Apr 2025 | $94.30k | |
| Orsted Onshore North America | Austin, TX | Independent Power Producer | 1 | 1.3 TWh | Apr 2025 | - | ||
| Orsted Wind Power North America LLC | Boston, MA | Independent Power Producer | 3 | 443.9 GWh | Apr 2025 | - | ||
| Osage Wind, LLC | St. Louis, MO | Independent Power Producer | - | - | - | Mar 2025 | $4.68M | |
| Osborn Wind Energy LLC | Juno Beach, FL | Independent Power Producer | 1 | 797.6 GWh | Apr 2025 | Mar 2025 | $6.35M | |
| Osceola Windpower LLC | Juno Beach, FL | Independent Power Producer | 2 | 691.6 GWh | Apr 2025 | Jun 2019 | ||
| OSLH, LLC | Asheville, NC | Independent Power Producer | 1 | 22.8 GWh | Dec 2024 | - | ||
| Oswego City Of | Oswego, NY | Municipally-Owned Utility | 1 | 29.4 GWh | Dec 2024 | - | ||
| Oswego County | Oswego, NY | Municipally-Owned Utility | 1 | 8.8 GWh | Dec 2024 | - | ||
| Oswego Harbor Power | Oswego, NY | Independent Power Producer | 1 | 45.8 GWh | Jan 2025 | Mar 2025 | $12.35M | |
| OTAY Mesa Energy Center LLC | Dublin, CA | Independent Power Producer | 1 | 2.3 TWh | Apr 2025 | Apr 2025 | $27.51M | |
| OTIS Elevator Company | Florence, SC | Industrial | 1 | 1.7 GWh | Dec 2023 | - | ||
| Otsego Paper Inc | Otsego, MI | Industrial | 1 | 174.4 GWh | Dec 2023 | - | ||
| Otter Creek Ethanol LLC - Poet Ashton | Ashton, IA | Industrial | 1 | 46.1 GWh | Apr 2025 | - | ||
| Otter Creek Wind Farm LLC | Portland, OR | - | - | - | Mar 2025 | $3.24M | ||
| Otter River Road Solar LLC | Framingham, MA | Independent Power Producer | 1 | 4.3 GWh | Dec 2024 | - | ||
| Otter Tail Power Co | Fergus Falls, MN | Investor-Owned Utility | 21 | 5.9 TWh | Apr 2025 | Apr 2025 | $22.13M | $1.09M |
| Outback Solar, LLC | New York, NY | Independent Power Producer | 1 | 6.7 GWh | Dec 2024 | - | ||
| Overlook Solar Partners, LLC | New York, NY | Independent Power Producer | 1 | 4.7 GWh | Nov 2024 | - | ||
| Overman Solar, LLC | Asheville, NC | Independent Power Producer | 1 | 11.2 GWh | Dec 2024 | - | ||
| OWEN Solar LLC | Menlo Park, CA | Independent Power Producer | 1 | 8.5 GWh | Dec 2024 | - | ||
| Owlville Creek Solar 2, LLC | Boston, MA | Independent Power Producer | 1 | 7.5 GWh | Dec 2023 | - | ||
| Owlville Creek Solar, LLC | Boston, MA | Independent Power Producer | 1 | 8.5 GWh | Dec 2024 | - | ||
| Owyhee Irrigation District | Nyssa, OR | Political Subdivision | 3 | 51.0 GWh | Oct 2024 | - | ||
| Oxbow Creek Energy LLC | Omaha, NE | Independent Power Producer | 1 | 46.2 GWh | Dec 2024 | Apr 2025 | $500.75k | |
| Oxbow Solar Farm 1, LLC | San Francisco, CA | - | - | - | Mar 2025 | $3.31M | ||
| Oxnard City Of | Oxnard, CA | Municipally-Owned Utility | 1 | 5.0 GWh | Apr 2025 | - | ||
| OXON Run Community Renewable Energy Facility | Washington, DC | State-Owned Utility | 1 | 1.6 GWh | Dec 2024 | - | ||
| Oxy Renewable Energy LLC | Houston, TX | Industrial | 1 | 42.9 GWh | Dec 2024 | - | ||
| Oxy VInyls LP | Houston, TX | Industrial | 2 | 1.9 TWh | Apr 2025 | - | ||
| OYA 2643 Moore Road LLC | Juno Beach, FL | Independent Power Producer | 1 | 6.4 GWh | Dec 2024 | - | ||
| OYA Blanchard Road 2 LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.4 GWh | Dec 2024 | - | ||
| OYA Blanchard Road LLC | Juno Beach, FL | Independent Power Producer | 1 | 7.2 GWh | Dec 2024 | - | ||
| OYA Church Road A LLC | Toronto, ON | Independent Power Producer | 1 | 8.4 GWh | Dec 2024 | - | ||
| OYA Great Lakes Seaway LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.0 GWh | Dec 2024 | - | ||
| OYA Main Street LLC | Toronto, ON | Independent Power Producer | 1 | 8.4 GWh | Dec 2024 | - | ||
| OYA NYS RTE 12 LLC | Juno Beach, FL | Independent Power Producer | 1 | 7.0 GWh | Dec 2024 | - | ||
| OYA Pulaski LLC | Independent Power Producer | 1 | 6.5 GWh | Dec 2023 | - | |||
| OYA Robinson Road, LLC | Independent Power Producer | 1 | 9.5 GWh | Dec 2023 | - | |||
| OYA State Route 122, LLC | Independent Power Producer | 1 | 8.2 GWh | Dec 2023 | - | |||
| OYA Wayside Drive LLC | Independent Power Producer | 1 | 9.6 GWh | Dec 2023 | - | |||
| Ozark Hydro Management, LLC | Locust Grove, AR | Independent Power Producer | 3 | 60.3 GWh | Apr 2025 | - | ||
| Ozarks Electric Coop Corp - (Ar) | Fayetteville, AR | Cooperative | 1 | 989.0 MWh | Dec 2024 | - |
Top Power Plants in United States
| Plant | Location | Annual Generation | Initial Operation Date | Last Update | Fuel Types |
|---|---|---|---|---|---|
| Arkansas Nuclear One | Russellville, Arkansas | 15 TWh | Nov 1974 | Apr 2025 | Nuclear |
| Barry | Bucks, Alabama | 15 TWh | Jan 1954 | Apr 2025 | Natural Gas : 93.7% Bituminous Coal : 6.3% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | Apr 2025 | Nuclear |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | Apr 2025 | Nuclear |
| Browns Ferry | Decatur, Alabama | 29 TWh | Jul 1974 | Apr 2025 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 16 TWh | Oct 1975 | Apr 2025 | Nuclear |
| Byron Generating Station | Byron, Illinois | 19 TWh | Aug 1985 | Apr 2025 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | Apr 2025 | Nuclear |
| Catawba | York, South Carolina | 19 TWh | May 1985 | Apr 2025 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 19 TWh | Jul 1990 | Apr 2025 | Nuclear |
| Crystal River | Crystal River, Florida | 15 TWh | Sep 1966 | Apr 2025 | Natural Gas : 78.9% Bituminous Coal : 21.0% |
| Diablo Canyon | Avila Beach, California | 18 TWh | Apr 1985 | Apr 2025 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 18 TWh | Jul 1975 | Apr 2025 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | Apr 2025 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | Apr 2025 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 12 TWh | Sep 1974 | Apr 2025 | Bituminous Coal : 99.5% Distillate Fuel Oil : 0.5% |
| Ghent | Ghent, Kentucky | 11 TWh | Jan 1974 | Apr 2025 | Bituminous Coal : 99.9% |
| Grand Coulee | Grand Coulee, Washington | 16 TWh | Feb 1941 | Apr 2025 | Water |
| Grand Gulf | Port Gibson, Mississippi | 11 TWh | Jun 1985 | Apr 2025 | Nuclear |
| Greensville County Power Station | Emporia, Virginia | 12 TWh | Nov 2018 | Apr 2025 | Natural Gas |
| Guernsey Power Station | Byesville, Ohio | 12 TWh | Jan 2023 | Apr 2025 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | Apr 2025 | Natural Gas |
| Hines Energy Complex | Bartow, Florida | 12 TWh | Mar 1999 | Apr 2025 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 17 TWh | Apr 1971 | Apr 2025 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | Apr 2025 | Subbituminous Coal : 99.1% Natural Gas : 0.9% |
| Joseph M Farley | Columbia, Alabama | 15 TWh | Nov 1977 | Apr 2025 | Nuclear |
| Labadie | Labadie, Missouri | 15 TWh | May 1970 | Apr 2025 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 20 TWh | Dec 1983 | Apr 2025 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 20 TWh | Jan 1986 | Apr 2025 | Nuclear |
| McGuire | Huntersville, North Carolina | 19 TWh | Aug 1981 | Apr 2025 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | Apr 2025 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 15 TWh | Oct 1969 | Apr 2025 | Subbituminous Coal : 74.5% Bituminous Coal : 15.8% Petroleum Coke : 9.6% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | Apr 2025 | Nuclear |
| North Anna | Mineral, Virginia | 16 TWh | May 1978 | Apr 2025 | Nuclear |
| Oak Grove (TX) | Franklin, Texas | 12 TWh | Mar 2010 | Apr 2025 | Lignite Coal : 98.0% Natural Gas : 2.0% |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | Apr 2025 | Nuclear |
| Palo Verde | Wintersburg, Arizona | 32 TWh | Dec 1985 | Apr 2025 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | Apr 2025 | Nuclear |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 18 TWh | May 1971 | Apr 2025 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | Apr 2025 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 15 TWh | Dec 1960 | Apr 2025 | Water |
| South Texas Project | Wadsworth, Texas | 21 TWh | Jul 1988 | Apr 2025 | Nuclear |
| St Lucie | Jensen Beach, Florida | 16 TWh | Apr 1976 | Apr 2025 | Nuclear |
| Surry | Surry, Virginia | 13 TWh | Nov 1972 | Apr 2025 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 20 TWh | May 1983 | Apr 2025 | Nuclear |
| Turkey Point | Homestead, Florida | 21 TWh | Mar 1967 | Apr 2025 | Nuclear : 66.2% Natural Gas : 33.8% |
| Vogtle | Waynesboro, Georgia | 35 TWh | Apr 1987 | Apr 2025 | Nuclear |
| W A Parish | Thompsons, Texas | 14 TWh | May 1958 | Apr 2025 | Subbituminous Coal : 82.6% Natural Gas : 17.4% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 15 TWh | Apr 1996 | Apr 2025 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 19 TWh | Jul 2009 | Apr 2025 | Natural Gas : 99.9% |