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 |
|---|---|---|---|---|---|---|---|---|
| O.H. Hutchings CT, LLC | Washington, DC | - | - | - | Apr 2025 | $94.04k | ||
| O'Neill Creek Solar LLC | Beaverton, OR | Independent Power Producer | 1 | 4.0 GWh | Dec 2023 | - | ||
| Oak Leaf Solar 100 LLC | Montpelier, VT | - | - | - | Mar 2025 | $53.91k | ||
| Oak Leaf Solar 56 LLC | Montpelier, VT | - | - | - | Mar 2025 | $144.04k | ||
| Oak Leaf Solar V LLC | Bethesda, MD | Independent Power Producer | 1 | 2.0 GWh | Dec 2023 | - | ||
| Oak Leaf Solar Xviii LLC | Montpelier, VT | - | - | - | Mar 2025 | $35.67k | ||
| Oak Leaf Solar Xxii LLC | Montpelier, VT | - | - | - | Mar 2025 | $46.12k | ||
| Oak Leaf Solar XXVI LLC | Montpelier, VT | - | - | - | Mar 2025 | $65.62k | ||
| Oak Ridge Solar, LLC | Louisville, CO | - | - | - | Mar 2025 | $3.61M | ||
| Oak Solar LLC | Stamford, CT | Independent Power Producer | 1 | 222.9 GWh | Mar 2025 | Mar 2025 | $1.61M | |
| Oak Trail Solar, LLC | Houston, TX | Independent Power Producer | - | - | - | Apr 2025 | $1.53M | |
| Oakdale&South San Joaquin Irrigation D. | Pinecrest, CA | Political Subdivision | 3 | 581.2 GWh | Dec 2023 | - | ||
| Oakland Power Company LLC | Irving, TX | - | - | - | Mar 2025 | $221.18k | ||
| Oakley Solar Project LLC | Walnut Creek, CA | Commercial | 1 | 2.5 GWh | Dec 2023 | - | ||
| Oakwood Solar, LLC | Asheville, NC | Independent Power Producer | 1 | 10.0 GWh | Dec 2023 | - | ||
| Oasis ALTA, LLC | San Diego, CA | Independent Power Producer | - | - | - | Apr 2025 | $425.07k | |
| Oasis Power Partners, LLC | New York, NY | - | - | - | Apr 2025 | $1.93M | ||
| Oberlin College | Oberlin, OH | Commercial | 1 | 2.1 GWh | Dec 2023 | - | ||
| Oberon Solar Ia | Irvine, CA | Independent Power Producer | 1 | 295.6 GWh | Mar 2025 | - | ||
| Oberon Solar Ib | Irvine, CA | Independent Power Producer | 1 | 60.0 GWh | Mar 2025 | - | ||
| OBP Cogen LLC | New York, NY | Commercial | 1 | 27.5 GWh | Dec 2023 | - | ||
| Occidental Chemical Corporation | Houston, TX | Industrial | 2 | 5.4 TWh | Mar 2025 | Mar 2025 | $4.04M | |
| Occidental College | LOS Angeles, CA | Independent Power Producer | 1 | 1.6 GWh | Dec 2023 | - | ||
| Occidental Permian Ltd | Houston, TX | Industrial | 1 | 147.5 GWh | Dec 2023 | - | ||
| Occidental Power Services, Inc. | Houston, TX | - | - | - | Apr 2025 | $589.50k | ||
| Ocean County Utilities AUTH | Bayville, NJ | Political Subdivision | 1 | 2.9 GWh | Mar 2025 | - | ||
| Ocean State BTM, LLC | Wakefield, MA | - | - | - | Mar 2025 | $83.23k | ||
| Ocean State Power Co | Harrisville, RI | Independent Power Producer | 2 | 2.5 TWh | Dec 2023 | Mar 2025 | $33.10M | |
| OCI Solar Power | San Antonio, TX | Independent Power Producer | 6 | 105.1 GWh | Dec 2023 | - | ||
| Oconto Electric Cooperative | Oconto Falls, WI | Cooperative | 1 | 5.8 GWh | Dec 2023 | Mar 2025 | $2.18M | |
| Ocotillo Express LLC | Houston, TX | - | - | - | Mar 2025 | $7.23M | ||
| Ocotillo Solar LLC | Newark, NJ | - | - | - | Apr 2025 | $683.54k | ||
| Odell Wind Farm, LLC | Oakville, ON | - | - | - | Mar 2025 | $6.56M | ||
| Odessa Energy Services LLC | Hermiston, OR | Independent Power Producer | 3 | 20.7 GWh | Dec 2023 | - | ||
| ODOM Solar, LLC | Nashville, TN | Independent Power Producer | 1 | 49.9 GWh | Dec 2023 | Mar 2025 | $191.76k | |
| Odyssey Operating Services | Charlotte, NC | Independent Power Producer | 1 | 3.8 TWh | Mar 2025 | - | ||
| Odyssey Solar, LLC | Asheville, NC | Independent Power Producer | 1 | 18.2 GWh | Dec 2023 | Mar 2025 | $168.97k | |
| Oe_ald | Miami, FL | Independent Power Producer | 1 | 161.2 GWh | Mar 2025 | - | ||
| Oe_escl | Miami, FL | Independent Power Producer | 1 | 398.9 GWh | Mar 2025 | - | ||
| Oe_fl7 | Miami, FL | Independent Power Producer | 1 | 23.9 GWh | Mar 2025 | - | ||
| Oe Il Solar 3, LLC | Boston, MA | Independent Power Producer | 1 | 4.3 GWh | Dec 2023 | - | ||
| Oe_ms5 | Miami, FL | Independent Power Producer | 1 | 36.8 GWh | Mar 2025 | - | ||
| Oe_ms6 | Miami, FL | Independent Power Producer | 1 | 266.2 GWh | Mar 2025 | - | ||
| Oe_tn1 | Miami, FL | Independent Power Producer | 1 | 189.7 GWh | Mar 2025 | - | ||
| OEE XIX, LLC | Findlay, OH | Industrial | 1 | 11.2 GWh | Dec 2023 | - | ||
| OEE Xvii, LLC | Findlay, OH | Industrial | 1 | 2.8 GWh | Mar 2025 | - | ||
| OEE Xxiii LLC | Findlay, OH | Industrial | 1 | 9.9 GWh | Dec 2023 | - | ||
| OEE Xxiv LLC | Findlay, OH | Industrial | 1 | 4.2 GWh | Dec 2023 | - | ||
| OEE XXV LLC | Findlay, OH | Industrial | 1 | 7.7 GWh | Dec 2023 | - | ||
| OEE XXVI LLC | Findlay, OH | Independent Power Producer | 1 | 11.4 GWh | Dec 2023 | - | ||
| OEE Xxviii LLC | Findlay, OH | Independent Power Producer | 1 | 12.4 GWh | Dec 2023 | - | ||
| OEE XXX LLC | Findlay, OH | Independent Power Producer | 1 | 11.6 GWh | Dec 2023 | - | ||
| Off Airport Road - West, LLC | Boston, MA | Independent Power Producer | 1 | 6.7 GWh | Dec 2023 | - | ||
| Ogburn Solar, LLC | Jersey City, NJ | Independent Power Producer | 1 | 4.7 GWh | Dec 2023 | - | ||
| Ogden Projects Inc-Haverhill | Morristown, NJ | Independent Power Producer | 1 | 315.0 GWh | Mar 2025 | - | ||
| Oglethorpe Power Corporation | Tucker, GA | Cooperative | 11 | 17.2 TWh | Mar 2025 | Mar 2025 | $8.40M | $1.98M |
| Ohio Edison Company | Akron, OH | - | - | - | Mar 2025 | $1.54k | $15.84M | |
| Ohio Power Co | Columbus, OH | 1 | - | Feb 2021 | Apr 2025 | $234.93k | $127.63M | |
| Ohio Power Partners, LLC | Middletown, OH | Independent Power Producer | 1 | 3.9 TWh | Mar 2025 | Apr 2025 | $33.26M | |
| Ohio Valley Electric Corp | Piketon, OH | Investor-Owned Utility | 1 | 5.5 TWh | Mar 2025 | Apr 2025 | $225.68M | $97.79M |
| Ok Produce | Fresno, CA | Commercial | 1 | 3.1 GWh | Dec 2023 | - | ||
| Oklahoma Gas & Electric Co | Oklahoma City, OK | Investor-Owned Utility | 22 | 17.6 TWh | Mar 2025 | Apr 2025 | $111.63M | $10.22M |
| Oklahoma Municipal Power Authority | Edmond, OK | State-Owned Utility | 5 | 262.5 GWh | Dec 2023 | Mar 2025 | $5.92M | |
| Oklahoma Wind, LLC | Juno Beach, FL | - | - | - | Mar 2025 | $510.75k | ||
| Olcese Water District | Bakersfield, CA | Municipally-Owned Utility | 1 | 31.1 GWh | Dec 2023 | - | ||
| Old 300 Solar Center, LLC | Austin, TX | Independent Power Producer | 1 | 386.6 GWh | Mar 2025 | - | ||
| Old Court RD Solar, LLC | Arlington, VA | Independent Power Producer | 1 | 3.6 GWh | Dec 2023 | - | ||
| Old Dominion Electric Coop | Glen Allen, VA | Cooperative | 10 | 5.2 TWh | Mar 2025 | Apr 2025 | $351.09M | $51.63M |
| Old Gold Energy Center, LLC | Joice, IA | Independent Power Producer | 1 | 106.8 GWh | Dec 2023 | Apr 2025 | $209.91k | |
| Old Middleboro Road Solar, LLC | Wakefield, MA | - | - | - | Feb 2025 | $31.25k | ||
| Old Mill Solar | Juno Beach, FL | Independent Power Producer | 1 | 7.6 GWh | Dec 2023 | - | ||
| Old Settler Wind, LLC | Charlottesville, VA | Independent Power Producer | 1 | 591.0 GWh | Mar 2025 | - | ||
| Old Trail Wind Farm LLC | Ellsworth, IL | Independent Power Producer | 1 | 657.5 GWh | Mar 2025 | Apr 2025 | $3.93M | |
| Oleander Holdings LLC | Juno Beach, FL | Independent Power Producer | 1 | 397.3 GWh | Dec 2023 | - | ||
| Oleander Power Project, Limited Partnership | Juno Beach, FL | - | - | - | Mar 2025 | $5.65M | ||
| OLIN Blue Cube Operations | Freeport, TX | Industrial | 1 | 1.9 TWh | Mar 2025 | - | ||
| Olinda Trail Solar LLC | San Francisco, CA | Independent Power Producer | 1 | 2.2 GWh | Dec 2023 | - | ||
| Oliver Wind Energy Center II, LLC | Juno Beach, FL | - | - | - | Mar 2025 | $1.62M | ||
| Oliver Wind I, LLC | Juno Beach, FL | - | - | - | Mar 2025 | $1.02M | ||
| Oliver Wind III, LLC | Juno Beach, FL | Independent Power Producer | 1 | 470.2 GWh | Mar 2025 | Mar 2025 | $2.54M | |
| Oliver Wind IV, LLC | Juno Beach, FL | Independent Power Producer | 1 | 248.3 GWh | Mar 2025 | Apr 2025 | $7.81k | |
| Olmstead Solar II, LLC | San Francisco, CA | Independent Power Producer | 1 | 2.1 GWh | Dec 2023 | - | ||
| Olmsted County Public Works | Rochester, MN | Municipally-Owned Utility | 1 | 42.6 GWh | Dec 2023 | - | ||
| Olney Solar II, LLC | Boston, MA | Independent Power Producer | 1 | 4.6 GWh | Dec 2023 | - | ||
| OLS Energy-Agnews Inc. | Dublin, CA | Independent Power Producer | 1 | 38.3 GWh | Dec 2023 | Apr 2025 | $0 | |
| OLS Energy-Chino | Chino, CA | Independent Power Producer | 1 | 11.9 GWh | Dec 2023 | - | ||
| Olsen Power Partners | Annapolis, MD | Independent Power Producer | 1 | 18.9 GWh | Dec 2023 | - | ||
| Omaha Public Power District | Omaha, NE | Political Subdivision | 11 | 8.7 TWh | Mar 2025 | Apr 2025 | $69.27M | $36.55M |
| Omnis Pleasants, LLC | Santa Barbara, CA | Independent Power Producer | 1 | 710.6 GWh | Mar 2025 | Apr 2025 | $5.60M | |
| One Nation Energy Solutions, LLC | Houston, TX | - | - | - | Mar 2025 | $1.79M | ||
| One Ten Partners, LLC | LOS Angeles, CA | Independent Power Producer | 1 | 5.6 GWh | Dec 2023 | - | ||
| Oneenergy Baker Point Solar, LLC | Asheville, NC | - | - | - | Mar 2025 | $36.92k | ||
| Oneida DG Solar, LLC | Juno Beach, FL | Independent Power Producer | 2 | 4.9 GWh | Dec 2023 | - | ||
| Oneta Power LLC | Broken Arrow, OK | Independent Power Producer | 1 | 5.9 TWh | Mar 2025 | Mar 2025 | $25.09M | |
| ONGP LLC | Reno, NV | - | - | - | Mar 2025 | $23.96M | ||
| Ontario Power Generation Energy Trading, Inc. | Toronto, ON | - | - | - | Mar 2025 | $3.52M | ||
| Ontelaunee Energy Center | Reading, PA | Independent Power Producer | 1 | 3.8 TWh | Mar 2025 | - | ||
| Ontelaunee Power Operating Company, LLC | Irving, TX | - | - | - | Apr 2025 | $31.12M | ||
| Onward Energy | New York, NY | Independent Power Producer | 39 | 5.9 TWh | Mar 2025 | - | ||
| Onyx Asset Services Group | New York, NY | Independent Power Producer | 25 | 67.1 GWh | Dec 2023 | - |
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 | Mar 2025 | Nuclear |
| Barry | Bucks, Alabama | 14 TWh | Jan 1954 | Mar 2025 | Natural Gas : 93.9% Bituminous Coal : 6.1% |
| Beaver Valley | Shippingport, Pennsylvania | 14 TWh | Aug 1976 | Mar 2025 | Nuclear |
| Braidwood Generation Station | Braceville, Illinois | 19 TWh | Jun 1988 | Mar 2025 | Nuclear |
| Browns Ferry | Decatur, Alabama | 29 TWh | Jul 1974 | Mar 2025 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 16 TWh | Oct 1975 | Mar 2025 | Nuclear |
| Byron Generating Station | Byron, Illinois | 20 TWh | Aug 1985 | Mar 2025 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | Mar 2025 | Nuclear |
| Catawba | York, South Carolina | 19 TWh | May 1985 | Mar 2025 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 20 TWh | Jul 1990 | Mar 2025 | Nuclear |
| Crystal River | Crystal River, Florida | 16 TWh | Sep 1966 | Mar 2025 | Natural Gas : 79.9% Bituminous Coal : 20.0% |
| Diablo Canyon | Avila Beach, California | 18 TWh | Apr 1985 | Mar 2025 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 18 TWh | Jul 1975 | Mar 2025 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | Mar 2025 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | Mar 2025 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 12 TWh | Sep 1974 | Mar 2025 | Bituminous Coal : 99.5% Distillate Fuel Oil : 0.5% |
| Grand Coulee | Grand Coulee, Washington | 16 TWh | Feb 1941 | Mar 2025 | Water |
| Grand Gulf | Port Gibson, Mississippi | 11 TWh | Jun 1985 | Mar 2025 | Nuclear |
| Greensville County Power Station | Emporia, Virginia | 11 TWh | Nov 2018 | Mar 2025 | Natural Gas |
| Guernsey Power Station | Byesville, Ohio | 11 TWh | Jan 2023 | Mar 2025 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | Mar 2025 | Natural Gas |
| Hines Energy Complex | Bartow, Florida | 12 TWh | Mar 1999 | Mar 2025 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 18 TWh | Apr 1971 | Mar 2025 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | Mar 2025 | Subbituminous Coal : 99.1% Natural Gas : 0.9% |
| Joseph M Farley | Columbia, Alabama | 15 TWh | Nov 1977 | Mar 2025 | Nuclear |
| Labadie | Labadie, Missouri | 15 TWh | May 1970 | Mar 2025 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 20 TWh | Dec 1983 | Mar 2025 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | Mar 2025 | Nuclear |
| McGuire | Huntersville, North Carolina | 20 TWh | Aug 1981 | Mar 2025 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | Mar 2025 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 15 TWh | Oct 1969 | Mar 2025 | Subbituminous Coal : 74.6% Bituminous Coal : 15.7% Petroleum Coke : 9.6% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | Mar 2025 | Nuclear |
| North Anna | Mineral, Virginia | 16 TWh | May 1978 | Mar 2025 | Nuclear |
| Oak Grove (TX) | Franklin, Texas | 12 TWh | Mar 2010 | Mar 2025 | Lignite Coal : 97.8% Natural Gas : 2.2% |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | Mar 2025 | Nuclear |
| Palo Verde | Wintersburg, Arizona | 32 TWh | Dec 1985 | Mar 2025 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | Mar 2025 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 11 TWh | May 2012 | Mar 2025 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 19 TWh | May 1971 | Mar 2025 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | Mar 2025 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 15 TWh | Dec 1960 | Mar 2025 | Water |
| South Texas Project | Wadsworth, Texas | 20 TWh | Jul 1988 | Mar 2025 | Nuclear |
| St Lucie | Jensen Beach, Florida | 15 TWh | Apr 1976 | Mar 2025 | Nuclear |
| Surry | Surry, Virginia | 13 TWh | Nov 1972 | Mar 2025 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 20 TWh | May 1983 | Mar 2025 | Nuclear |
| Turkey Point | Homestead, Florida | 21 TWh | Mar 1967 | Mar 2025 | Nuclear : 65.4% Natural Gas : 34.6% |
| Vogtle | Waynesboro, Georgia | 35 TWh | Apr 1987 | Mar 2025 | Nuclear |
| W A Parish | Thompsons, Texas | 14 TWh | May 1958 | Mar 2025 | Subbituminous Coal : 82.1% Natural Gas : 17.9% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 17 TWh | Apr 1996 | Mar 2025 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 19 TWh | Jul 2009 | Mar 2025 | Natural Gas : 99.9% |