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 2025Q2 Seller Transactions | FERC 2025Q2 Buyer Transactions |
|---|---|---|---|---|---|---|---|---|
| Old Court RD Solar, LLC | Arlington, VA | Independent Power Producer | - | 3.1 GWh | Dec 2024 | - | ||
| Old Frontier Solar III PV, LLC | Boston, MA | Independent Power Producer | 1 | 4.0 GWh | Dec 2025 | - | ||
| Old Mill Solar | Juno Beach, FL | Independent Power Producer | 1 | 7.4 GWh | Dec 2025 | - | ||
| Old Settler Wind, LLC | Houston, TX | Independent Power Producer | 1 | 622.3 GWh | Aug 2026 | - | ||
| Oleander Holdings LLC | Juno Beach, FL | Independent Power Producer | 1 | 598.3 GWh | Dec 2025 | - | ||
| OLIN Blue Cube Operations | Freeport, TX | Industrial | 1 | 2.1 TWh | Aug 2026 | - | ||
| Olinda Trail Solar LLC | Princeton, NJ | Independent Power Producer | 1 | 2.0 GWh | Dec 2025 | - | ||
| Olmstead Solar II, LLC | San Francisco, CA | Independent Power Producer | 1 | 4.7 GWh | Dec 2025 | - | ||
| Olmsted County Public Works - (MN) | Rochester, MN | Municipally-Owned Utility | 1 | 51.9 GWh | Dec 2025 | - | ||
| Olney Solar II, LLC | Boston, MA | Independent Power Producer | 1 | 4.5 GWh | Dec 2025 | - | ||
| Olsen Power Partners | Annapolis, MD | Independent Power Producer | 1 | 16.6 GWh | Dec 2025 | - | ||
| One Ten Partners, LLC | LOS Angeles, CA | Independent Power Producer | 1 | 5.8 GWh | Dec 2025 | - | ||
| Oneenergy, Inc. | Seattle, WA | Independent Power Producer | 22 | 4.2 GWh | Dec 2025 | - | ||
| Oneida DG Solar, LLC | Juno Beach, FL | Independent Power Producer | - | 5.1 GWh | Dec 2024 | - | ||
| Onsite Partners, LLC | Columbus, OH | Independent Power Producer | 45 | 152.1 GWh | Aug 2026 | - | ||
| Ontelaunee Energy Center | Reading, PA | Independent Power Producer | 1 | 4.0 TWh | Aug 2026 | - | ||
| Onward Energy | New York, NY | Independent Power Producer | 41 | 6.6 TWh | Aug 2026 | - | ||
| Onyx Asset Services Group | New York, NY | Independent Power Producer | 41 | 115.0 GWh | Dec 2025 | - | ||
| Open Mountain Energy LLC. | LEHI, UT | Independent Power Producer | 1 | 18.7 GWh | Dec 2025 | - | ||
| Oppidum Renewables USA, LLC | Pittsburgh, PA | Independent Power Producer | 18 | 128.4 GWh | Dec 2025 | - | ||
| Or Solar 2, LLC | Jersey City, NJ | Independent Power Producer | 1 | 20.8 GWh | Dec 2025 | - | ||
| Orange County Sanitation DIST - (Ca) | Fountain Valley, CA | Political Subdivision | 2 | 96.5 GWh | Dec 2025 | - | ||
| Orange Grove | Boston, MA | Independent Power Producer | 1 | 339.3 GWh | Aug 2026 | - | ||
| Orcal Geothermal, Inc | Reno, NV | Independent Power Producer | 2 | 715.2 GWh | Dec 2025 | - | ||
| Orchard Ranch Solar, LLC | Miami, FL | Independent Power Producer | 1 | 50.1 GWh | Aug 2026 | - | ||
| Orchard Windfarm, LLC | New York, NY | Independent Power Producer | 4 | 78.4 GWh | Dec 2025 | - | ||
| Oregon Environmental Industries LLC | Medford, OR | Independent Power Producer | 1 | 18.0 GWh | Dec 2025 | - | ||
| Oregon State University | Corvallis, OR | State-Owned Utility | 1 | 34.5 GWh | Jul 2026 | - | ||
| Organic Energy Solutions, Inc. | San Bernardino, CA | Independent Power Producer | 1 | 1.3 GWh | Dec 2025 | - | ||
| Oriana Solar LLC | Boston, MA | Independent Power Producer | 1 | 402.5 GWh | Aug 2026 | - | ||
| Origis Energy USA, Inc | Miami, FL | Independent Power Producer | 21 | 2.0 TWh | Aug 2026 | - | ||
| Orion Community Solar | Scottsdale, AZ | Independent Power Producer | 1 | 4.6 GWh | Dec 2025 | - | ||
| Orion Energy Group LLC | Oakland, CA | Commercial | 2 | 835.3 GWh | Dec 2025 | - | ||
| Orion Engineered Carbons | Spring, TX | Industrial | 3 | 115.2 GWh | Dec 2025 | - | ||
| Orion Solar I LLC | Independent Power Producer | 1 | 28.7 GWh | Dec 2025 | - | |||
| Orion Solar II, LLC | Boston, MA | Independent Power Producer | 1 | 16.8 GWh | Dec 2025 | - | ||
| Ormat Nevada Inc. | Reno, NV | Independent Power Producer | 28 | 3.4 TWh | Aug 2026 | - | ||
| Ormat Salt Wells LLC | Reno, NV | Independent Power Producer | 1 | 71.9 GWh | Dec 2025 | - | ||
| ORNI 30 LLC | Reno, NV | Independent Power Producer | 1 | 69.7 GWh | Aug 2026 | - | ||
| Orsted Onshore North America | Austin, TX | Independent Power Producer | 1 | 1.2 TWh | Aug 2026 | - | ||
| Orsted Wind Power North America LLC | Boston, MA | Independent Power Producer | 3 | 549.3 GWh | Aug 2026 | - | ||
| OSLH, LLC | Portland, OR | Independent Power Producer | - | 22.8 GWh | Dec 2024 | - | ||
| Oswego, City Of - (Ny) | Oswego, NY | Municipally-Owned Utility | 1 | 22.2 GWh | Dec 2025 | - | ||
| Oswego County - (Ny) | Oswego, NY | Municipally-Owned Utility | 1 | 6.3 GWh | Dec 2025 | - | ||
| OTIS Elevator Company | Florence, SC | Industrial | 1 | 1.8 GWh | Dec 2025 | - | ||
| Otsego Paper Inc | Otsego, MI | Industrial | 1 | 175.0 GWh | Dec 2025 | - | ||
| Ottawa Wind 24, LLC | Findlay, OH | Industrial | 1 | 2.3 GWh | Dec 2024 | - | ||
| Otter Creek Ethanol LLC - Poet Ashton | Ashton, IA | Industrial | 1 | 48.5 GWh | Aug 2026 | - | ||
| Otter River Road Solar LLC | Framingham, MA | Independent Power Producer | 1 | 4.0 GWh | Dec 2025 | - | ||
| Outback Solar, LLC | New York, NY | Independent Power Producer | 1 | 9.0 GWh | Dec 2025 | - | ||
| Overlook Solar Partners, LLC | New York, NY | Independent Power Producer | 1 | 8.5 GWh | Dec 2025 | - | ||
| Overman Solar, LLC | Asheville, NC | Independent Power Producer | - | 11.2 GWh | Dec 2024 | - | ||
| OWEN Solar LLC | Menlo Park, CA | Independent Power Producer | 1 | 7.4 GWh | Dec 2025 | - | ||
| Owlville Creek Solar 2, LLC | Boston, MA | Independent Power Producer | 1 | 7.6 GWh | Dec 2025 | - | ||
| Owlville Creek Solar, LLC | Boston, MA | Independent Power Producer | 1 | 8.6 GWh | Dec 2025 | - | ||
| Owyhee Irrigation District | Nyssa, OR | Political Subdivision | 3 | 16.3 GWh | Oct 2025 | - | ||
| OXON Run Community Renewable Energy Facility | Washington, DC | State-Owned Utility | 1 | 1.1 GWh | Dec 2025 | - | ||
| Oxy Renewable Energy LLC | Houston, TX | Industrial | 1 | 41.3 GWh | Dec 2025 | - | ||
| Oxy VInyls LP | Houston, TX | Industrial | 2 | 1.8 TWh | Aug 2026 | - | ||
| OYA 2643 Moore Road LLC | Juno Beach, FL | Independent Power Producer | 1 | 6.1 GWh | Dec 2025 | - | ||
| OYA Blanchard Road 2 LLC | Juno Beach, FL | Independent Power Producer | 1 | 7.7 GWh | Dec 2025 | - | ||
| OYA Blanchard Road LLC | Juno Beach, FL | Independent Power Producer | 1 | 7.2 GWh | Dec 2025 | - | ||
| OYA Church Road A LLC | Toronto, ON | Independent Power Producer | 1 | 8.9 GWh | Dec 2025 | - | ||
| OYA Great Lakes Seaway LLC | Juno Beach, FL | Independent Power Producer | 1 | 5.4 GWh | Dec 2025 | - | ||
| OYA Main Street LLC | Toronto, ON | Independent Power Producer | 1 | 6.9 GWh | Dec 2025 | - | ||
| OYA NYS RTE 12 LLC | Juno Beach, FL | Independent Power Producer | 1 | 7.0 GWh | Dec 2025 | - | ||
| Ozark Hydro Management, LLC | Locust Grove, AR | Independent Power Producer | 3 | 61.4 GWh | Aug 2026 | - | ||
| Ozarks Electric Coop Corp - (Ar) | Fayetteville, AR | Cooperative | 1 | 2.2 GWh | Dec 2025 | - | ||
| P66 Rodeo Solar | Rodeo, CA | Independent Power Producer | 1 | 62.5 GWh | Aug 2026 | - | ||
| Pac Aviation | Van NUYS, CA | Independent Power Producer | 1 | 3.0 GWh | Dec 2025 | - | ||
| Pacific Energy Solutions, LLC | Juno Beach, FL | Independent Power Producer | 1 | 17.1 GWh | Dec 2025 | - | ||
| Pacifico Power | San Juan Capistrano, CA | Independent Power Producer | 2 | 250.0 MWh | Dec 2024 | - | ||
| Packaging Corp Of America | Counce, TN | Independent Power Producer | 1 | 464.5 GWh | Aug 2026 | - | ||
| Packaging Corporation Of America | Lake Forest, IL | Industrial | 1 | 439.8 GWh | Dec 2025 | - | ||
| Paducah Power System | Paducah, KY | Municipally-Owned Utility | 1 | 158.0 GWh | Dec 2025 | - | ||
| Page Solar Farm, LLC | Charlotte, NC | Independent Power Producer | - | 2.6 GWh | Dec 2024 | - | ||
| Palm Springs, City Of - (Ca) | Palm Springs, CA | Municipally-Owned Utility | 1 | 8.3 GWh | Aug 2026 | - | ||
| Palm Springs USD | Palm Springs, CA | Commercial | 1 | 1.3 GWh | Dec 2025 | - | ||
| Palmer Community Solar LLC | Schenectady, NY | Independent Power Producer | 1 | 1.9 GWh | Dec 2025 | - | ||
| Palmer Hydroelectric | Corinth, NY | Independent Power Producer | 1 | 308.3 GWh | Dec 2025 | - | ||
| Palmetto Power Management LLC | El Segundo, CA | Independent Power Producer | 3 | 73.5 GWh | Dec 2025 | - | ||
| Pamlico Partners Solar, LLC | Jersey City, NJ | Independent Power Producer | 1 | 9.5 GWh | Dec 2025 | - | ||
| Panda Solar NC 1, LLC | Stamford, CT | Independent Power Producer | 1 | 1.7 GWh | Dec 2025 | - | ||
| Panda Solar NC 10, LLC | Stamford, CT | Independent Power Producer | 1 | 4.4 GWh | Dec 2025 | - | ||
| Panda Solar NC 11, LLC | Stamford, CT | Independent Power Producer | 1 | 3.4 GWh | Dec 2025 | - | ||
| Panda Solar NC 2, LLC | Stamford, CT | Independent Power Producer | 1 | 3.0 GWh | Dec 2025 | - | ||
| Panda Solar NC 3, LLC | Stamford, CT | Independent Power Producer | 1 | 3.4 GWh | Dec 2025 | - | ||
| Panda Solar NC 4, LLC | Stamford, CT | Independent Power Producer | 1 | 3.6 GWh | Dec 2025 | - | ||
| Panda Solar NC 5, LLC | Stamford, CT | Independent Power Producer | 1 | 1.6 GWh | Dec 2025 | - | ||
| Panda Solar NC 6, LLC | Stamford, CT | Independent Power Producer | 1 | 1.5 GWh | Dec 2025 | - | ||
| Panda Solar NC 7 , LLC | Stamford, CT | Independent Power Producer | 1 | 2.6 GWh | Dec 2025 | - | ||
| Panda Solar NC 8, LLC | Stamford, CT | Independent Power Producer | 1 | 2.4 GWh | Dec 2025 | - | ||
| Panda Solar NC 9, LLC | Stamford, CT | Independent Power Producer | 1 | 4.0 GWh | Dec 2025 | - | ||
| Pantex (NNSA) | Amarillo, TX | Federally-Owned Utility | 1 | 44.7 GWh | Aug 2026 | - | ||
| Par Petroleum | Houston, TX | Industrial | 1 | 177.7 GWh | Aug 2026 | - | ||
| Paragould Municipal Utilities (Ar) | Paragould, AR | Municipally-Owned Utility | 4 | 3.7 GWh | Dec 2025 | - | ||
| Paramount Group Inc | New York, NY | Commercial | 1 | 1.2 GWh | Dec 2025 | - | ||
| Paris Farm Solar, LLC | Redwood City, CA | Independent Power Producer | 1 | 620.0 GWh | Aug 2026 | - | ||
| Paris Generation LP | Paris, TX | Independent Power Producer | 1 | 357.7 GWh | Dec 2025 | - | ||
| Parliament Solar, LLC | Houston, TX | Independent Power Producer | 1 | 766.0 GWh | Aug 2026 | - |
Top Power Plants in United States
| Plant | Location | Annual Generation | Initial Operation Date | Last Update | Fuel Types |
|---|---|---|---|---|---|
| Arkansas Nuclear One | Russellville, Arkansas | 14 TWh | Nov 1974 | Aug 2026 | Nuclear |
| Barry | Bucks, Alabama | 14 TWh | Jan 1954 | Aug 2026 | Natural Gas : 96.4% Bituminous Coal : 3.6% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | Aug 2026 | Nuclear |
| Bowen | Cartersville, Georgia | 13 TWh | Sep 1971 | Aug 2026 | Bituminous Coal : 99.8% |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | Aug 2026 | Nuclear |
| Browns Ferry | Decatur, Alabama | 31 TWh | Jul 1974 | Aug 2026 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 15 TWh | Oct 1975 | Aug 2026 | Nuclear |
| Byron Generating Station | Byron, Illinois | 20 TWh | Aug 1985 | Aug 2026 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | Aug 2026 | Nuclear |
| Catawba | York, South Carolina | 18 TWh | May 1985 | Aug 2026 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 20 TWh | Jul 1990 | Aug 2026 | Nuclear |
| Crystal River | Crystal River, Florida | 16 TWh | Sep 1966 | Aug 2026 | Natural Gas : 69.9% Bituminous Coal : 29.9% |
| Diablo Canyon | Avila Beach, California | 19 TWh | Apr 1985 | Aug 2026 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 18 TWh | Jul 1975 | Aug 2026 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | Aug 2026 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | Aug 2026 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 12 TWh | Sep 1974 | Aug 2026 | Bituminous Coal : 99.5% |
| Grand Coulee | Grand Coulee, Washington | 19 TWh | Feb 1941 | Aug 2026 | Water |
| Guernsey Power Station | Byesville, Ohio | 12 TWh | Jan 2023 | Aug 2026 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | Aug 2026 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 19 TWh | Apr 1971 | Aug 2026 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | Aug 2026 | Subbituminous Coal : 99.1% Natural Gas : 0.9% |
| Joseph M Farley | Columbia, Alabama | 15 TWh | Nov 1977 | Aug 2026 | Nuclear |
| Labadie | Labadie, Missouri | 15 TWh | May 1970 | Aug 2026 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 19 TWh | Dec 1983 | Aug 2026 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | Aug 2026 | Nuclear |
| McGuire | Huntersville, North Carolina | 19 TWh | Aug 1981 | Aug 2026 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | Aug 2026 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 15 TWh | Oct 1969 | Aug 2026 | Subbituminous Coal : 75.1% Bituminous Coal : 15.7% Petroleum Coke : 9.0% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | Aug 2026 | Nuclear |
| North Anna | Mineral, Virginia | 16 TWh | May 1978 | Aug 2026 | Nuclear |
| Oak Grove (TX) | Franklin, Texas | 12 TWh | Mar 2010 | Aug 2026 | Lignite Coal : 99.3% Natural Gas : 0.7% |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | Aug 2026 | Nuclear |
| Palo Verde | Wintersburg, Arizona | 31 TWh | Dec 1985 | Aug 2026 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | Aug 2026 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 12 TWh | May 2012 | Aug 2026 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 19 TWh | May 1971 | Aug 2026 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | Aug 2026 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 14 TWh | Dec 1960 | Aug 2026 | Water |
| Sequoyah | Soddy Daisy, Tennessee | 18 TWh | Jun 1981 | Aug 2026 | Nuclear |
| South Texas Project | Wadsworth, Texas | 20 TWh | Jul 1988 | Aug 2026 | Nuclear |
| St Lucie | Jensen Beach, Florida | 15 TWh | Apr 1976 | Aug 2026 | Nuclear |
| Surry | Surry, Virginia | 12 TWh | Nov 1972 | Aug 2026 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 20 TWh | May 1983 | Aug 2026 | Nuclear |
| Turkey Point | Homestead, Florida | 20 TWh | Mar 1967 | Aug 2026 | Nuclear : 64.7% Natural Gas : 35.3% |
| Union Power Station | El Dorado, Arkansas | 13 TWh | Dec 2002 | Aug 2026 | Natural Gas |
| Vogtle | Waynesboro, Georgia | 37 TWh | Apr 1987 | Aug 2026 | Nuclear |
| W A Parish | Thompsons, Texas | 14 TWh | May 1958 | Aug 2026 | Subbituminous Coal : 82.1% Natural Gas : 17.9% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 20 TWh | Apr 1996 | Aug 2026 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 18 TWh | Jul 2009 | Aug 2026 | Natural Gas : 99.9% |