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 Settler Wind, LLC | Houston, TX | Independent Power Producer | 1 | 595.3 GWh | Feb 2026 | - | ||
| Old Mill Solar | Juno Beach, FL | Independent Power Producer | 1 | 7.5 GWh | Dec 2024 | - | ||
| Old Middleboro Road Solar, LLC | Wakefield, MA | - | - | - | Sep 2025 | $33.58k | ||
| Old Gold Energy Center, LLC | Joice, IA | Independent Power Producer | 1 | 89.1 GWh | Dec 2024 | Oct 2025 | $121.04k | |
| Old Frontier Solar III PV, LLC | Boston, MA | Independent Power Producer | 1 | 4.1 GWh | Dec 2024 | - | ||
| Old Dominion Electric Coop | Glen Allen, VA | Cooperative | 10 | 4.2 TWh | Feb 2026 | Oct 2025 | $437.30M | $58.66M |
| Old Court RD Solar, LLC | Arlington, VA | Independent Power Producer | 1 | 3.1 GWh | Dec 2024 | - | ||
| Old 300 Solar Center, LLC | Austin, TX | Independent Power Producer | 1 | 989.6 GWh | Feb 2026 | - | ||
| Oklahoma Wind, LLC | Juno Beach, FL | - | - | - | Sep 2025 | $547.23k | ||
| Oklahoma Municipal Power Authority | Edmond, OK | State-Owned Utility | 5 | 277.6 GWh | Dec 2024 | Sep 2025 | $7.12M | |
| Oklahoma Gas & Electric Co | Oklahoma City, OK | Investor-Owned Utility | 22 | 18.6 TWh | Feb 2026 | Oct 2025 | $116.11M | $18.97M |
| Ok Produce | Fresno, CA | Commercial | 1 | 3.7 GWh | Dec 2024 | - | ||
| Ohio Valley Electric Corp | Piketon, OH | Investor-Owned Utility | 1 | 5.8 TWh | Feb 2026 | Oct 2025 | $196.57M | $113.71M |
| Ohio Power Partners, LLC | Middletown, OH | Independent Power Producer | 1 | 3.4 TWh | Feb 2026 | Oct 2025 | $23.60M | |
| Ohio Power Co | Columbus, OH | 1 | - | Feb 2021 | Oct 2025 | $259.73k | $163.63M | |
| Ohio Edison Company | Akron, OH | - | - | - | Sep 2025 | $504.22k | $18.17M | |
| Oglethorpe Power Corporation | Tucker, GA | Cooperative | 13 | 16.3 TWh | Feb 2026 | Sep 2025 | $34.46M | $3.20M |
| Ogden Projects Inc-Haverhill | Morristown, NJ | Independent Power Producer | 1 | 206.5 GWh | Feb 2026 | - | ||
| Ogburn Solar, LLC | Jersey City, NJ | Independent Power Producer | 1 | 4.5 GWh | Dec 2024 | - | ||
| Off Airport Road - West, LLC | Boston, MA | Independent Power Producer | 1 | 6.9 GWh | Dec 2024 | - | ||
| OEE Xxxiii LLC | Findlay, OH | Independent Power Producer | 1 | 7.2 GWh | Dec 2024 | - | ||
| OEE XXX LLC | Findlay, OH | Independent Power Producer | 1 | 4.8 GWh | Dec 2024 | - | ||
| OEE Xxviii LLC | Findlay, OH | Independent Power Producer | 1 | 6.7 GWh | Dec 2024 | - | ||
| OEE XXVI LLC | Findlay, OH | Independent Power Producer | 1 | 7.4 GWh | Dec 2024 | - | ||
| OEE XXV LLC | Findlay, OH | Industrial | 1 | 4.2 GWh | Dec 2024 | - | ||
| OEE Xxiv LLC | Findlay, OH | Industrial | 1 | 2.3 GWh | Dec 2024 | - | ||
| OEE Xxiii LLC | Findlay, OH | Industrial | 1 | 6.5 GWh | Dec 2024 | - | ||
| OEE Xvii, LLC | Findlay, OH | Industrial | 1 | 3.4 GWh | Feb 2026 | - | ||
| OEE XIX, LLC | Findlay, OH | Industrial | 1 | 7.6 GWh | Dec 2024 | - | ||
| Oe_tn1 | Miami, FL | Independent Power Producer | 1 | 171.1 GWh | Feb 2026 | - | ||
| Oe Il Solar 3, LLC | Boston, MA | Independent Power Producer | 1 | 4.7 GWh | Dec 2024 | - | ||
| Oe_ald | Miami, FL | Independent Power Producer | - | 163.0 GWh | Dec 2023 | - | ||
| Odyssey Solar, LLC | Asheville, NC | Independent Power Producer | 1 | 12.5 GWh | Dec 2024 | Sep 2025 | $238.51k | |
| Odyssey Operating Services | Charlotte, NC | Independent Power Producer | 1 | 3.6 TWh | Feb 2026 | - | ||
| ODOM Solar, LLC | Nashville, TN | Independent Power Producer | 1 | 47.1 GWh | Dec 2024 | Sep 2025 | $355.09k | |
| Odessa Energy Services LLC | Hermiston, OR | Independent Power Producer | 3 | 21.0 GWh | Dec 2024 | - | ||
| Odell Wind Farm, LLC | Oakville, ON | - | - | - | Sep 2025 | $5.46M | ||
| Ocotillo Solar LLC | Newark, NJ | - | - | - | Oct 2025 | $830.42k | ||
| Ocotillo Express LLC | Houston, TX | - | - | - | Sep 2025 | $17.78M | ||
| Oconto Electric Cooperative | Oconto Falls, WI | Cooperative | 1 | 6.0 GWh | Dec 2024 | Sep 2025 | $2.15M | |
| OCI Energy LLC | San Antonio, TX | Independent Power Producer | 5 | 101.7 GWh | Dec 2024 | - | ||
| Ocean State Power Co | Harrisville, RI | Independent Power Producer | 2 | 2.2 TWh | Dec 2024 | Sep 2025 | $27.03M | |
| Ocean State BTM, LLC | Wakefield, MA | - | - | - | Sep 2025 | $26.95k | ||
| Ocean County Utilities AUTH | Bayville, NJ | Political Subdivision | 1 | 1.6 GWh | Feb 2026 | - | ||
| Occidental Power Services, Inc. | Houston, TX | - | - | - | Oct 2025 | $11.37M | ||
| Occidental Permian Ltd | Houston, TX | Industrial | 1 | 155.8 GWh | Dec 2024 | - | ||
| Occidental College | LOS Angeles, CA | Independent Power Producer | 1 | 1.4 GWh | Dec 2024 | - | ||
| Occidental Chemical Corporation | Houston, TX | Industrial | 2 | 6.2 TWh | Feb 2026 | Sep 2025 | $36.49M | |
| Oberon Solar Ib | Irvine, CA | Independent Power Producer | 1 | 61.7 GWh | Feb 2026 | - | ||
| Oberon Solar Ia | Irvine, CA | Independent Power Producer | 1 | 312.0 GWh | Feb 2026 | - | ||
| Oberlin College | Oberlin, OH | Commercial | 1 | 2.7 GWh | Dec 2024 | - | ||
| Oasis Power Partners, LLC | New York, NY | - | - | - | Oct 2025 | $3.53M | ||
| Oasis ALTA, LLC | San Diego, CA | Independent Power Producer | - | - | - | Oct 2025 | $818.48k | |
| Oakwood Solar, LLC | Asheville, NC | Independent Power Producer | 1 | 10.2 GWh | Dec 2024 | - | ||
| Oakley Solar Project LLC | Walnut Creek, CA | Commercial | 1 | 2.0 GWh | Dec 2024 | - | ||
| Oakland Power Company LLC | Irving, TX | - | - | - | Oct 2025 | $136.74k | ||
| Oakdale&South San Joaquin Irrigation D. | Pinecrest, CA | Political Subdivision | 3 | 393.2 GWh | Dec 2024 | - | ||
| Oak Trail Solar, LLC | Houston, TX | Independent Power Producer | - | - | - | Oct 2025 | $3.40M | |
| Oak Solar LLC | Stamford, CT | Independent Power Producer | 1 | 266.5 GWh | Feb 2026 | Oct 2025 | $3.41M | |
| Oak Ridge Solar, LLC | Louisville, CO | - | - | - | Sep 2025 | $4.75M | ||
| Oak Leaf Solar XXVI LLC | Montpelier, VT | - | - | - | Sep 2025 | $62.72k | ||
| Oak Leaf Solar Xxii LLC | Montpelier, VT | - | - | - | Sep 2025 | $71.61k | ||
| Oak Leaf Solar Xviii LLC | Montpelier, VT | - | - | - | Sep 2025 | $183.81k | ||
| Oak Leaf Solar V LLC | Bethesda, MD | Independent Power Producer | 1 | 2.0 GWh | Dec 2024 | - | ||
| Oak Leaf Solar 56 LLC | Montpelier, VT | - | - | - | Sep 2025 | $285.61k | ||
| Oak Leaf Solar 100 LLC | Montpelier, VT | - | - | - | Sep 2025 | $56.81k | ||
| O'Neill Creek Solar LLC | Beaverton, OR | Independent Power Producer | 1 | 3.4 GWh | Dec 2024 | - | ||
| O.H. Hutchings CT, LLC | Washington, DC | - | - | - | Oct 2025 | $328.81k | ||
| NYU Langone Health | New York City, NY | Commercial|Independent Power Producer | 2 | 50.1 GWh | Dec 2024 | - | ||
| Nysolar03 LLC | Houston, TX | Independent Power Producer | 1 | 5.7 GWh | Dec 2024 | - | ||
| NYPH-Queens | Flushing, NY | Commercial | 1 | 714.3 MWh | Dec 2024 | - | ||
| Ny USLE Rome Rome-Oriskany LLC | Arlington, VA | Independent Power Producer | 1 | 5.0 GWh | Dec 2024 | - | ||
| Ny USLE Oswego SR104 LLC | Arlington, VA | Independent Power Producer | 1 | 7.2 GWh | Dec 2024 | - | ||
| Ny USLE Glenville Freemans Bridge LLC | Safety Harbor, FL | Independent Power Producer | 1 | 6.9 GWh | Dec 2024 | - | ||
| Ny USLE Copenhagen CR194 LLC | Katonah, NY | Independent Power Producer | 1 | 2.3 GWh | Dec 2024 | - | ||
| Ny USLE Carthage SR26 B LLC | Arlington, VA | Independent Power Producer | 1 | 5.8 GWh | Dec 2024 | - | ||
| Ny USLE Carthage SR26 A LLC | Arlington, VA | Independent Power Producer | 1 | 8.5 GWh | Dec 2024 | - | ||
| Ny - Presbyterian Hospital- 68TH St | New York, NY | Commercial | 1 | 58.0 GWh | Dec 2024 | - | ||
| Ny- CSG- Livingston 4 | New York, NY | Independent Power Producer | 1 | 2.9 GWh | Dec 2024 | - | ||
| Ny- CSG- Johnstown 2 | Gloversville, NY | Independent Power Producer | 1 | 2.5 GWh | Dec 2024 | - | ||
| NWP Indian Mesa Wind Farm LP | Juno Beach, FL | Independent Power Producer | 1 | 221.7 GWh | Dec 2024 | - | ||
| NVT Licenses, LLC | Belmont, CA | Independent Power Producer | 2 | 6.4 GWh | Dec 2024 | - | ||
| Nutmeg Solar LLC | Juno Beach, FL | Independent Power Producer | 1 | 35.8 GWh | Dec 2024 | Sep 2025 | $968.84k | |
| Nushagak Electric Coop, Inc | Dillingham, AK | Cooperative | 1 | 19.8 GWh | Dec 2024 | - | ||
| Number Three Wind LLC | Chicago, IL | - | - | - | Oct 2025 | $2.90M | ||
| Nugen Capital Management | Providence, RI | Independent Power Producer | 16 | 71.6 GWh | Dec 2024 | - | ||
| NTUA Generation - Utah, LLC | Independent Power Producer | 1 | 199.0 GWh | Feb 2026 | - | |||
| Ntherm,LLC | Tampa, FL | - | - | - | Oct 2025 | $324.37k | ||
| Nstar Electric Company | Westwood, MA | Investor-Owned Utility | 17 | 62.3 GWh | Feb 2026 | Oct 2025 | $27.02M | $57.43M |
| NSF Torrey Site 3, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.4 GWh | Dec 2024 | - | ||
| NSF Torrey Site 2, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.4 GWh | Dec 2024 | - | ||
| NSF Torrey Site 1, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.4 GWh | Dec 2024 | - | ||
| NSF Enfield Site 3, LLC | Juno Beach, FL | Independent Power Producer | 1 | 287.0 MWh | Dec 2024 | - | ||
| NSF Enfield Site 1, LLC | Juno Beach, FL | Independent Power Producer | 1 | 309.0 MWh | Dec 2024 | - | ||
| NSF Energy One LLC | Rochester, NY | Independent Power Producer | 4 | 19.2 GWh | Dec 2024 | - | ||
| NSF Chaumont Site 5 LLC | New York, NY | - | - | - | Sep 2025 | $220.83k | ||
| NSF Chaumont Site 3 LLC | New York, NY | - | - | - | Sep 2025 | $213.40k | ||
| NSF Chaumont Site 2 LLC | New York, NY | - | - | - | Sep 2025 | $115.42k | ||
| NSF Chaumont Site 1 LLC | New York, NY | - | - | - | Sep 2025 | $108.14k | ||
| NSF Angelica Site 4, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.3 GWh | 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 | Feb 2026 | Nuclear |
| Barry | Bucks, Alabama | 12 TWh | Jan 1954 | Feb 2026 | Natural Gas : 95.8% Bituminous Coal : 4.2% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | Feb 2026 | Nuclear |
| Bowen | Cartersville, Georgia | 12 TWh | Sep 1971 | Feb 2026 | Bituminous Coal : 99.8% |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | Feb 2026 | Nuclear |
| Browns Ferry | Decatur, Alabama | 30 TWh | Jul 1974 | Feb 2026 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 16 TWh | Oct 1975 | Feb 2026 | Nuclear |
| Byron Generating Station | Byron, Illinois | 20 TWh | Aug 1985 | Feb 2026 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | Feb 2026 | Nuclear |
| Catawba | York, South Carolina | 20 TWh | May 1985 | Feb 2026 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 20 TWh | Jul 1990 | Feb 2026 | Nuclear |
| Crystal River | Crystal River, Florida | 16 TWh | Sep 1966 | Feb 2026 | Natural Gas : 71.2% Bituminous Coal : 28.6% |
| Diablo Canyon | Avila Beach, California | 17 TWh | Apr 1985 | Feb 2026 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 17 TWh | Jul 1975 | Feb 2026 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | Feb 2026 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | Feb 2026 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 13 TWh | Sep 1974 | Feb 2026 | Bituminous Coal : 99.5% |
| Grand Coulee | Grand Coulee, Washington | 18 TWh | Feb 1941 | Feb 2026 | Water |
| Guernsey Power Station | Byesville, Ohio | 12 TWh | Jan 2023 | Feb 2026 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | Feb 2026 | Natural Gas |
| Hines Energy Complex | Bartow, Florida | 12 TWh | Mar 1999 | Feb 2026 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 18 TWh | Apr 1971 | Feb 2026 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | Feb 2026 | Subbituminous Coal : 99.2% Natural Gas : 0.8% |
| Joseph M Farley | Columbia, Alabama | 13 TWh | Nov 1977 | Feb 2026 | Nuclear |
| Labadie | Labadie, Missouri | 17 TWh | May 1970 | Feb 2026 | Subbituminous Coal |
| LaSalle Generating Station | Marseilles, Illinois | 19 TWh | Dec 1983 | Feb 2026 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | Feb 2026 | Nuclear |
| McGuire | Huntersville, North Carolina | 19 TWh | Aug 1981 | Feb 2026 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | Feb 2026 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 16 TWh | Oct 1969 | Feb 2026 | Subbituminous Coal : 74.7% Bituminous Coal : 16.2% Petroleum Coke : 8.9% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | Feb 2026 | Nuclear |
| North Anna | Mineral, Virginia | 15 TWh | May 1978 | Feb 2026 | Nuclear |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | Feb 2026 | Nuclear |
| Okeechobee Clean Energy Center | Okeechobee, Florida | 12 TWh | Feb 2019 | Feb 2026 | Natural Gas |
| Palo Verde | Wintersburg, Arizona | 31 TWh | Dec 1985 | Feb 2026 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | Feb 2026 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 12 TWh | May 2012 | Feb 2026 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 19 TWh | May 1971 | Feb 2026 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | Feb 2026 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 14 TWh | Dec 1960 | Feb 2026 | Water |
| Sequoyah | Soddy Daisy, Tennessee | 15 TWh | Jun 1981 | Feb 2026 | Nuclear |
| South Texas Project | Wadsworth, Texas | 22 TWh | Jul 1988 | Feb 2026 | Nuclear |
| St Lucie | Jensen Beach, Florida | 16 TWh | Apr 1976 | Feb 2026 | Nuclear |
| Surry | Surry, Virginia | 13 TWh | Nov 1972 | Feb 2026 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 19 TWh | May 1983 | Feb 2026 | Nuclear |
| Turkey Point | Homestead, Florida | 20 TWh | Mar 1967 | Feb 2026 | Nuclear : 67.9% Natural Gas : 32.1% |
| Vogtle | Waynesboro, Georgia | 37 TWh | Apr 1987 | Feb 2026 | Nuclear |
| W A Parish | Thompsons, Texas | 15 TWh | May 1958 | Feb 2026 | Subbituminous Coal : 83.0% Natural Gas : 17.0% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 18 TWh | Apr 1996 | Feb 2026 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 19 TWh | Jul 2009 | Feb 2026 | Natural Gas : 99.9% |