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 2025Q1 Seller Transactions | FERC 2025Q1 Buyer Transactions |
|---|---|---|---|---|---|---|---|---|
| Ocotillo Solar LLC | Newark, NJ | - | - | - | Jul 2025 | $913.69k | ||
| Ocotillo Express LLC | Houston, TX | - | - | - | Jun 2025 | $12.05M | ||
| Oconto Electric Cooperative | Oconto Falls, WI | Cooperative | 1 | 6.0 GWh | Dec 2024 | Jun 2025 | $2.52M | |
| 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 | Jun 2025 | $16.04M | |
| Ocean State BTM, LLC | Wakefield, MA | - | - | - | Jun 2025 | $76.46k | ||
| Ocean County Utilities AUTH | Bayville, NJ | Political Subdivision | 1 | 2.7 GWh | May 2025 | - | ||
| Occidental Power Services, Inc. | Houston, TX | - | - | - | Jul 2025 | $16.97M | ||
| 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 | 5.3 TWh | May 2025 | Jun 2025 | $30.88M | |
| OBP Cogen LLC | New York, NY | Commercial | 1 | 27.5 GWh | Dec 2023 | - | ||
| Oberon Solar Ib | Irvine, CA | Independent Power Producer | 1 | 64.0 GWh | May 2025 | - | ||
| Oberon Solar Ia | Irvine, CA | Independent Power Producer | 1 | 311.6 GWh | May 2025 | - | ||
| Oberlin College | Oberlin, OH | Commercial | 1 | 2.7 GWh | Dec 2024 | - | ||
| Oasis Power Partners, LLC | New York, NY | - | - | - | Jul 2025 | $1.89M | ||
| Oasis ALTA, LLC | San Diego, CA | Independent Power Producer | - | - | - | Jul 2025 | $486.01k | |
| Oakwood Solar, LLC | Asheville, NC | Independent Power Producer | 1 | 10.2 GWh | Dec 2024 | - | ||
| Oakley Solar Project LLC | Walnut Creek, CA | Commercial | 1 | 2.5 GWh | Dec 2023 | - | ||
| Oakland Power Company LLC | Irving, TX | - | - | - | Jul 2025 | $241.84k | ||
| 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 | - | - | - | Jul 2025 | $1.96M | |
| Oak Solar LLC | Stamford, CT | Independent Power Producer | 1 | 252.9 GWh | May 2025 | Jul 2025 | $1.29M | |
| Oak Ridge Solar, LLC | Louisville, CO | - | - | - | Jun 2025 | $3.41M | ||
| Oak Leaf Solar XXVI LLC | Montpelier, VT | - | - | - | Mar 2025 | $59.43k | ||
| Oak Leaf Solar Xxii LLC | Montpelier, VT | - | - | - | Jun 2025 | $36.54k | ||
| Oak Leaf Solar Xviii LLC | Montpelier, VT | - | - | - | Jun 2025 | $127.68k | ||
| Oak Leaf Solar V LLC | Bethesda, MD | Independent Power Producer | 1 | 2.0 GWh | Dec 2024 | - | ||
| Oak Leaf Solar 56 LLC | Montpelier, VT | - | - | - | Jun 2025 | $191.41k | ||
| Oak Leaf Solar 100 LLC | Montpelier, VT | - | - | - | Jun 2025 | $81.93k | ||
| O'Neill Creek Solar LLC | Beaverton, OR | Independent Power Producer | 1 | 3.4 GWh | Dec 2024 | - | ||
| O.H. Hutchings CT, LLC | Washington, DC | - | - | - | Jul 2025 | $231.72k | ||
| NYU Langone Health | New York, NY | Commercial|Independent Power Producer | 2 | 49.8 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 Oswego SR104 LLC | Arlington, VA | Independent Power Producer | 1 | 457.0 MWh | Dec 2023 | - | ||
| Ny USLE Carthage SR26 B LLC | Arlington, VA | Independent Power Producer | 1 | 5.5 GWh | Dec 2023 | - | ||
| Ny USLE Carthage SR26 A LLC | Arlington, VA | Independent Power Producer | 1 | 8.2 GWh | Dec 2023 | - | ||
| Ny - Presbyterian Hospital- 68TH St | New York, NY | Commercial | 1 | 58.0 GWh | Dec 2024 | - | ||
| Ny - Mines Press | Cortlandt, NY | Independent Power Producer | 1 | 1.3 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 | Jun 2025 | $693.60k | |
| Nushagak Electric Coop, Inc | Dillingham, AK | Cooperative | 1 | 19.8 GWh | Dec 2024 | - | ||
| Number Three Wind LLC | Chicago, IL | - | - | - | Jul 2025 | $6.57M | ||
| Nugen Capital Management | Providence, RI | Independent Power Producer | 16 | 71.6 GWh | Dec 2024 | - | ||
| NTUA Generation - Utah, LLC | Independent Power Producer | 1 | 215.9 GWh | May 2025 | - | |||
| Ntherm,LLC | Tampa, FL | - | - | - | Jul 2025 | $6.70M | $2.44M | |
| Nstar Electric Company | Westwood, MA | Investor-Owned Utility | 17 | 62.6 GWh | May 2025 | Jul 2025 | $43.87M | $123.80M |
| 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 | 13.7 GWh | Dec 2024 | - | ||
| NSF Chaumont Site 5 LLC | New York, NY | - | - | - | Jun 2025 | $118.71k | ||
| NSF Chaumont Site 3 LLC | New York, NY | - | - | - | Jun 2025 | $147.25k | ||
| NSF Chaumont Site 2 LLC | New York, NY | - | - | - | Jun 2025 | $91.31k | ||
| NSF Chaumont Site 1 LLC | New York, NY | - | - | - | Jun 2025 | $82.32k | ||
| NSF Angelica Site 4, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.3 GWh | Dec 2024 | - | ||
| NSF Angelica Site 3, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.3 GWh | Dec 2024 | - | ||
| NSF Angelica Site 2, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.3 GWh | Dec 2024 | - | ||
| NSF Angelica Site 1, LLC | Juno Beach, FL | Independent Power Producer | 1 | 8.3 GWh | Dec 2024 | - | ||
| NS Power Energy Marketing Inc. | Halifax, NS | - | - | - | Jun 2025 | $281.11k | ||
| NRG VIenna Operations Inc | Vienna, MD | Independent Power Producer | 1 | 4.3 GWh | Dec 2024 | - | ||
| NRG Texas Power LLC | Houston, TX | Independent Power Producer | 10 | 23.6 TWh | May 2025 | - | ||
| NRG Solar Roadrunner | Santa Teresa, NM | Independent Power Producer | 1 | 72.8 GWh | Dec 2024 | Sep 2018 | ||
| NRG Solar Las Vegas MB-1 | Carlsbad, CA | Independent Power Producer | 2 | 9.1 GWh | Dec 2024 | - | ||
| NRG Solar Borrego I | Scottsdale, AZ | Independent Power Producer | 1 | 65.5 GWh | Dec 2024 | - | ||
| NRG Solar Blythe II LLC | Independent Power Producer | 1 | 40.7 GWh | Dec 2024 | - | |||
| NRG Solar Blythe | Blythe, CA | Independent Power Producer | 1 | 44.3 GWh | Dec 2024 | Sep 2018 | ||
| NRG Renew Canal 1 LLC | Princeton, NJ | Independent Power Producer | 1 | 2.0 GWh | Dec 2024 | - | ||
| NRG MN Community LLC | San Franciso, CA | Independent Power Producer | 2 | 14.6 GWh | Dec 2024 | - | ||
| NRG Energy Services | Osceola, AR | Commercial|Independent Power Producer | 5 | 5.0 TWh | May 2025 | - | ||
| NRG Energy Inc | Independent Power Producer | 1 | 279.8 GWh | Dec 2024 | - | |||
| NRG Energy Gas & Wind Holdings Inc | Princeton, NJ | Independent Power Producer | 2 | 337.9 GWh | May 2025 | - | ||
| NRG Energy Center Eagles LLC | Princeton, NJ | Independent Power Producer | 1 | 3.0 GWh | Dec 2023 | - | ||
| NRG Cottonwood Tenant LLC | Deweyville, TX | Independent Power Producer | 1 | 5.9 TWh | May 2025 | Jun 2025 | $65.81M | |
| NRG Chalk Point CT | Aquasco, MD | Independent Power Producer | 1 | 1.6 GWh | May 2025 | Jul 2025 | $852.67k | |
| NRG Cedar Bayou Development Company LLC | Houston, TX | Independent Power Producer | 1 | 2.3 TWh | Dec 2024 | - | ||
| NRG California Peaker Operations LLC | Carlsbad, CA | Independent Power Producer | 1 | 280.2 GWh | May 2025 | - | ||
| NRG Business Marketing LLC | Princeton, NJ | - | - | - | Jul 2025 | $943.37M | $812.13M | |
| NRG Arthur Kill Operations Inc | Staten Island, NY | Independent Power Producer | 1 | 1.9 TWh | May 2025 | - | ||
| Novo Biopower LLC | Snowflake, AZ | Independent Power Producer | 1 | 190.5 GWh | Dec 2023 | Mar 2025 | $6.52M | |
| Nova Power, LLC | Houston, TX | Independent Power Producer | 1 | -99.4 GWh | May 2025 | Jul 2025 | $29.54M | |
| Notus Clean Energy LLC | E. Falmouth, MA | Independent Power Producer | 1 | 4.6 GWh | Dec 2024 | - | ||
| Nostrand Solar, LLC | San Francisco, CA | Independent Power Producer | 1 | 4.9 GWh | Dec 2024 | - | ||
| Norwest Energy 7, LLC | Asheville, NC | Independent Power Producer | 1 | 18.4 GWh | Dec 2024 | - | ||
| Norton Powerhouse 2 | Worcester, MA | Industrial | 1 | 31.3 GWh | Dec 2024 | - | ||
| Northwestern Lake Forest Hospital | Lake Forest, IL | Commercial | 1 | 335.0 MWh | Dec 2024 | - | ||
| Northwestern Energy LLC - (MT) | Butte, MT | |Investor-Owned Utility | 29 | 3.8 TWh | May 2025 | Jul 2025 | $10.83M | $16.10M |
| Northwestern Corporation | Helena, MT | - | - | - | Jul 2025 | $17.38M | $23.14M | |
| Northwest Ohio Wind, LLC | Haviland, OH | Independent Power Producer | 1 | 301.6 GWh | May 2025 | Jul 2025 | $4.59M | |
| Northwest Community Hospital | Arlington Heights, IL | Commercial | 1 | 527.4 MWh | Dec 2024 | - | ||
| Northstar MACY's Maryland 2015, LLC | Scottsdale, AZ | Independent Power Producer | 1 | 618.0 MWh | May 2025 | - | ||
| Northstar Clean Energy | Jackson, MI | Independent Power Producer | 2 | 281.2 GWh | Dec 2024 | - | ||
| Northlake Energy | East Chicago, IN | Industrial | 1 | 713.9 GWh | Dec 2024 | - | ||
| Northfield Mountain LLC | Burlington, MA | - | - | - | Jun 2025 | $28.25M | $16.14M |
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 | May 2025 | Nuclear |
| Barry | Bucks, Alabama | 14 TWh | Jan 1954 | May 2025 | Natural Gas : 93.4% Bituminous Coal : 6.6% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | May 2025 | Nuclear |
| Bowen | Cartersville, Georgia | 11 TWh | Sep 1971 | May 2025 | Bituminous Coal : 99.8% |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | May 2025 | Nuclear |
| Browns Ferry | Decatur, Alabama | 29 TWh | Jul 1974 | May 2025 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 15 TWh | Oct 1975 | May 2025 | Nuclear |
| Byron Generating Station | Byron, Illinois | 19 TWh | Aug 1985 | May 2025 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | May 2025 | Nuclear |
| Catawba | York, South Carolina | 19 TWh | May 1985 | May 2025 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 19 TWh | Jul 1990 | May 2025 | Nuclear |
| Crystal River | Crystal River, Florida | 15 TWh | Sep 1966 | May 2025 | Natural Gas : 77.9% Bituminous Coal : 21.9% |
| Diablo Canyon | Avila Beach, California | 19 TWh | Apr 1985 | May 2025 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 18 TWh | Jul 1975 | May 2025 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | May 2025 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | May 2025 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 12 TWh | Sep 1974 | May 2025 | Bituminous Coal : 99.4% Distillate Fuel Oil : 0.6% |
| Ghent | Ghent, Kentucky | 11 TWh | Jan 1974 | May 2025 | Bituminous Coal : 99.9% |
| Grand Coulee | Grand Coulee, Washington | 16 TWh | Feb 1941 | May 2025 | Water |
| Grand Gulf | Port Gibson, Mississippi | 12 TWh | Jun 1985 | May 2025 | Nuclear |
| Guernsey Power Station | Byesville, Ohio | 11 TWh | Jan 2023 | May 2025 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | May 2025 | Natural Gas |
| Hines Energy Complex | Bartow, Florida | 12 TWh | Mar 1999 | May 2025 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 17 TWh | Apr 1971 | May 2025 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 18 TWh | Sep 1978 | May 2025 | Subbituminous Coal : 99.1% Natural Gas : 0.9% |
| Joseph M Farley | Columbia, Alabama | 14 TWh | Nov 1977 | May 2025 | Nuclear |
| Labadie | Labadie, Missouri | 15 TWh | May 1970 | May 2025 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 20 TWh | Dec 1983 | May 2025 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | May 2025 | Nuclear |
| McGuire | Huntersville, North Carolina | 19 TWh | Aug 1981 | May 2025 | Nuclear |
| Millstone | Waterford, Connecticut | 16 TWh | Nov 1975 | May 2025 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 15 TWh | Oct 1969 | May 2025 | Subbituminous Coal : 74.4% Bituminous Coal : 15.9% Petroleum Coke : 9.5% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | May 2025 | Nuclear |
| North Anna | Mineral, Virginia | 16 TWh | May 1978 | May 2025 | Nuclear |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | May 2025 | Nuclear |
| Palo Verde | Wintersburg, Arizona | 32 TWh | Dec 1985 | May 2025 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | May 2025 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 11 TWh | May 2012 | May 2025 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 17 TWh | May 1971 | May 2025 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | May 2025 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 15 TWh | Dec 1960 | May 2025 | Water |
| South Texas Project | Wadsworth, Texas | 21 TWh | Jul 1988 | May 2025 | Nuclear |
| St Lucie | Jensen Beach, Florida | 16 TWh | Apr 1976 | May 2025 | Nuclear |
| Surry | Surry, Virginia | 14 TWh | Nov 1972 | May 2025 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 19 TWh | May 1983 | May 2025 | Nuclear |
| Turkey Point | Homestead, Florida | 20 TWh | Mar 1967 | May 2025 | Nuclear : 67.4% Natural Gas : 32.6% |
| Vogtle | Waynesboro, Georgia | 35 TWh | Apr 1987 | May 2025 | Nuclear |
| W A Parish | Thompsons, Texas | 14 TWh | May 1958 | May 2025 | Subbituminous Coal : 83.3% Natural Gas : 16.7% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 15 TWh | Apr 1996 | May 2025 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 19 TWh | Jul 2009 | May 2025 | Natural Gas : 99.9% |