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 |
|---|---|---|---|---|---|---|---|---|
| South Carolina Public Service Authority | Moncks Corner, SC | State-Owned Utility | 16 | 19.7 TWh | Jun 2026 | Oct 2025 | $332.56M | $45.75M |
| South Field Energy, LLC | Boston, MA | Independent Power Producer | 1 | 8.6 TWh | Jun 2026 | Oct 2025 | $73.20M | |
| South Point Energy Center LLC | Houston, TX | Independent Power Producer | 1 | 2.8 TWh | Jun 2026 | Oct 2025 | $11.22M | $0 |
| Southern California Edison Co | Rosemead, CA | Investor-Owned Utility | 95 | 4.9 TWh | Jun 2026 | Oct 2025 | $370.58M | $970.69M |
| Southern Company Services, Inc. (As Agent) | Birmingham, AL | - | - | - | Oct 2025 | $146.97M | $6.27M | |
| Southern Illinois Power Coop | Marion, IL | Cooperative | 1 | 874.8 GWh | Jun 2026 | Oct 2025 | $3.69M | |
| Southern Indiana Gas & ELEC Co | Evansville, IN | Investor-Owned Utility | 11 | 2.0 TWh | Jun 2026 | Oct 2025 | $33.22M | $8.35M |
| Southwestern Power Administration | Tulsa, OK | - | - | - | Oct 2025 | $1.59M | $4.24M | |
| Southwestern Public Service Co | Amarillo, TX | Investor-Owned Utility | 19 | 17.1 TWh | Jun 2026 | Oct 2025 | $231.47M | $98.95M |
| Spark Energy, LLC | Houston, TX | - | - | - | Oct 2025 | $70.59k | ||
| Spartacus Energy Services, LLC | Birmingham, AL | - | - | - | Oct 2025 | $165.02k | $166.38k | |
| Spearville 3, LLC | Phoenix, AZ | - | - | - | Oct 2025 | $1.41M | ||
| Spotlight Power LLC | Houston, TX | - | - | - | Oct 2025 | $10.00M | $8.91M | |
| St Joseph Energy Center LLC | New Carlisle, IN | Cooperative | 1 | 6.1 TWh | Jun 2026 | Oct 2025 | $42.63M | |
| Stanford University Power LLC | Stanford, CA | - | - | - | Oct 2025 | $1.27M | $1.99M | |
| Stephentown Spindle, LLC | Tyngsboro, MA | - | - | - | Oct 2025 | $264.26k | ||
| Stoneray Power Partners, LLC | Phoenix, AZ | - | - | - | Oct 2025 | $2.04M | ||
| Stony Creek Energy LLC | Chicago, IL | - | - | - | Oct 2025 | $3.50M | ||
| Storm Lake Power Partners II, LLC | Duluth, MN | - | - | - | Oct 2025 | $182.63k | ||
| Strauss Wind LLC | Carlsbad, CA | Independent Power Producer | 1 | 208.9 GWh | Jun 2026 | Oct 2025 | $1.92M | |
| Stream Energy Pennsylvania, LLC | Princeton, NJ | - | - | - | Oct 2025 | $2.47M | ||
| Stryker 22, L.L.C. | Reno, NV | Independent Power Producer | 1 | -4.5 GWh | Jun 2026 | Oct 2025 | $1.78M | |
| Sugar Creek Wind One LLC | Charlottesville, VA | Independent Power Producer | 1 | 609.1 GWh | Jun 2026 | Oct 2025 | $3.88M | |
| Summer Energy Midwest, LLC | Houston, TX | - | - | - | Oct 2025 | $4.70M | ||
| Sun Mountain Solar 1, LLC | San Francisco, CA | - | - | - | Oct 2025 | $3.11M | ||
| Sunbury Generation LP | Shamokin Dam, PA | Independent Power Producer | 1 | 1.4 GWh | Dec 2025 | Oct 2025 | $536.49k | |
| Sunflower Electric Power Corp | Hays, KS | Cooperative | 8 | 2.2 TWh | Jun 2026 | Oct 2025 | $15.65M | $1.48M |
| Sunflower Energy Center, LLC | Chicago, IL | Independent Power Producer | 1 | 859.3 GWh | Jun 2026 | Oct 2025 | $781.76k | |
| Sunrise Power Co LLC | Fellows, CA | Independent Power Producer | 1 | 2.2 TWh | Jun 2026 | Oct 2025 | $18.85M | $1.28M |
| Sunsea Energy, LLC | Birmingham, AL | - | - | - | Oct 2025 | $39.36k | ||
| Susquehanna Nuclear, LLC | Houston, TX | - | - | - | Oct 2025 | $119.45M | ||
| Sweetland Wind Farm, LLC | Boulder, CO | Independent Power Producer | 1 | 894.4 GWh | Jun 2026 | Oct 2025 | $887.22k | |
| Syracuse, L.L.C. | Warner Robins, GA | - | - | - | Oct 2025 | $1.66M | $53.30k | |
| TAI Huntsville Solar, LLC | New York, NY | Independent Power Producer | 1 | 70.7 GWh | Jun 2026 | Oct 2025 | $820.85k | |
| TAIT Electric Generating Station, LLC | Washington, DC | - | - | - | Oct 2025 | $25.28M | ||
| Talen Energy Marketing, LLC | Houston, TX | - | - | - | Oct 2025 | $405.00M | $408.83M | |
| Tampa Electric Co | Tampa, FL | Investor-Owned Utility | 51 | 21.4 TWh | Jun 2026 | Oct 2025 | $3.56M | $37.45M |
| Tatanka Ridge Wind, LLC | Ashwaubenon, WI | - | - | - | Oct 2025 | $2.72M | ||
| Tatanka Wind Power, LLC | Chicago, IL | - | - | - | Oct 2025 | $1.50M | ||
| Tecolote Wind LLC | Houston, TX | - | - | - | Oct 2025 | $16.60M | ||
| Tenaska Frontier Partners Ltd | Omaha, NE | Independent Power Producer | 1 | 4.8 TWh | Jun 2026 | Oct 2025 | $1.31M | |
| Tenaska Gateway Partners Ltd | Omaha, NE | Independent Power Producer | 1 | 4.8 TWh | Jun 2026 | Oct 2025 | $27.20M | |
| Tenaska Pennsylvania Partners, LLC | Omaha, NE | Independent Power Producer | 1 | 7.0 TWh | Jun 2026 | Oct 2025 | $65.81M | |
| Tenaska VIrginia Partners LP | Omaha, NE | Independent Power Producer | 1 | 4.9 TWh | Jun 2026 | Oct 2025 | $83.44M | |
| Tennessee Valley Authority | Knoxville, TN | Federally-Owned Utility | 62 | 154.0 TWh | Jun 2026 | Oct 2025 | $2.18M | $275.07M |
| Terminus Hydroelectric, LLC | Bethesda, MD | - | - | - | Oct 2025 | $1.03M | ||
| Terra-Gen Mojave Windfarms, LLC | New York, NY | - | - | - | Oct 2025 | $725.39k | ||
| TGP Energy Management II, LLC | Mojave, CA | - | - | - | Oct 2025 | $752.42k | ||
| TGP Energy Management, LLC | Mojave, CA | - | - | - | Oct 2025 | $6.04M | $6.21M | |
| The Energy Authority, Inc. | Jacksonville, FL | - | - | - | Oct 2025 | $912.22M | $255.11M | |
| The Energy Cooperative Of Pennsylvania, Inc. | Philadelphia, PA | - | - | - | Oct 2025 | $39.63k | ||
| The Narragansett Electric Company | Washington, DC | - | - | - | Oct 2025 | $18.73M | $70.21M | |
| The Procter & Gamble Paper Products Company | Harrisburg, PA | - | - | - | Oct 2025 | $675.05k | ||
| The Trustees Of The University Of Pennsylvania, A Pennsylvania NON-Profit Corporation | Harrisburg, PA | - | - | - | Oct 2025 | $12.68k | ||
| Think Energy, LLC | Greens Farms, CT | - | - | - | Oct 2025 | $5.22M | $10.67M | |
| Thunder Ranch Wind Project, LLC | Andover, MA | Independent Power Producer | 1 | 1.0 TWh | Jun 2026 | Oct 2025 | $966.88k | |
| Thunderhead Wind Energy LLC | Ashwaubenon, WI | - | - | - | Oct 2025 | $2.49M | ||
| Timbermill Wind | Charlottesville, VA | Independent Power Producer | 1 | 383.0 GWh | Jun 2026 | Oct 2025 | $3.50M | |
| Titus Power, LLC | Chicago, IL | Independent Power Producer | 1 | -353.6 MWh | Dec 2025 | Oct 2025 | $301.17k | |
| TODD Solar LLC | Chicago, IL | - | - | - | Oct 2025 | $293.63k | ||
| Tolna Power, LLC | Chicago, IL | Independent Power Producer | 1 | 2.4 GWh | Dec 2025 | Oct 2025 | $574.97k | |
| Toms River Merchant Solar, LLC | Boca Raton, FL | - | - | - | Oct 2025 | $394.03k | ||
| Town Square Energy East, LLC | Brooklyn, NY | - | - | - | Oct 2025 | $34.83k | $1.64M | |
| Transalta Centralia Gen LLC | Centralia, WA | Independent Power Producer | 2 | 2.1 TWh | Jan 2026 | Oct 2025 | $51.05M | |
| TRI-State Generation And Transmission Association, Inc. | Westminster, CO | - | - | - | Oct 2025 | $309.00M | $68.23M | |
| Tucson Electric Power Co | Tucson, AZ | Investor-Owned Utility | 13 | 8.4 TWh | Jun 2026 | Oct 2025 | $61.93M | $38.77M |
| Turlock Irrigation District | Turlock, CA | Political Subdivision | 11 | 2.8 TWh | Jun 2026 | Oct 2025 | $23.17M | |
| Turtle Creek Wind Farm LLC | Houston, TX | Independent Power Producer | 1 | 751.0 GWh | Jun 2026 | Oct 2025 | $5.46M | |
| Twin Eagle Resource Management, LLC | Spring, TX | - | - | - | Oct 2025 | $6.31M | $2.22M | |
| Twin Ridges LLC | Pittsburgh, PA | - | - | - | Oct 2025 | $6.37M | ||
| U S Borax Inc | Boron, CA | Independent Power Producer | 1 | 281.2 GWh | Jun 2026 | Oct 2025 | $445.85k | |
| U.S. Energy Partners, LLC | Garden City, NY | - | - | - | Oct 2025 | $80.39k | $91.91k | |
| UGI Utilities Inc. | Denver, PA | - | - | - | Oct 2025 | $1.14M | $11.48M | |
| Unbridled Solar, LLC | Bloomington, MN | - | - | - | Oct 2025 | $3.80M | ||
| Union Carbide Corp-Seadrift | Midland, MI | Industrial | 2 | 726.3 GWh | Jun 2026 | Oct 2025 | $3.22M | |
| Union Electric Co - (Mo) | St Louis, MO | Investor-Owned Utility | 34 | 34.7 TWh | Jun 2026 | Oct 2025 | $687.14M | $457.50k |
| Upper Michigan Energy Resources Company | Milwaukee, MI | Investor-Owned Utility | 3 | 593.7 GWh | Jun 2026 | Oct 2025 | $11.91M | $67.91k |
| Upper Peninsula Power Company | Marquette, MI | Investor-Owned Utility | 7 | 105.8 GWh | Dec 2025 | Oct 2025 | $5.49M | $5.40M |
| Upstream Wind Energy LLC | Ashwaubenon, WI | - | - | - | Oct 2025 | $1.36M | ||
| Mesquite Solar 3, LLC | Tonopah, AZ | Investor-Owned Utility | - | - | Dec 2017 | Oct 2025 | $7.75M | |
| Mesquite Solar 4, LLC | Valhalla, NY | - | - | - | Oct 2025 | $1.72M | ||
| Mesquite Solar 5, LLC | Valhalla, NY | - | - | - | Oct 2025 | $2.23M | ||
| Messer Energy Services, Inc. | Bethlehem, PA | - | - | - | Oct 2025 | $1.90M | ||
| Meyersdale Storage, LLC | Houston, TX | - | - | - | Oct 2025 | $1.38M | ||
| Meyersdale Windpower, LLC | Birmingham, AL | - | - | - | Oct 2025 | $283.48k | ||
| Microsoft Energy LLC | Redmond, WA | - | - | - | Oct 2025 | $1.20M | $20.97M | |
| Midamerican Energy Co | Urbandale, IA | Investor-Owned Utility | 63 | 42.6 TWh | Jun 2026 | Oct 2025 | $297.24M | $13.35M |
| Middletown Coke Company, LLC | Lisle, IL | - | - | - | Oct 2025 | $4.29M | ||
| Midland Cogeneration Venture | Midland, MI | Independent Power Producer | 1 | 10.7 TWh | Jun 2026 | Oct 2025 | $202.10M | $504.75k |
| Midway Peaking LLC | San Diego, CA | Independent Power Producer | - | - | Dec 2013 | Oct 2025 | $3.24M | |
| Midwest Generations Eme LLC | Chicago, IL | Independent Power Producer | 13 | 3.7 TWh | Jun 2026 | Oct 2025 | $44.96M | $363.42k |
| Milagro Solar I, LLC | Santa Teresa, NM | Independent Power Producer | 1 | 356.9 GWh | Jun 2026 | Oct 2025 | $1.79M | |
| Milan Energy LLC | Omaha, NE | Independent Power Producer | 1 | 44.8 GWh | Dec 2025 | Oct 2025 | $1.04M | |
| Milligan 1 Wind, LLC | San Diego, CA | Independent Power Producer | 1 | 1.1 TWh | Jun 2026 | Oct 2025 | $6.42M | |
| Minnesota Municipal Power AGNY | Minneapolis, MN | Political Subdivision | 4 | 1.1 TWh | Dec 2025 | Oct 2025 | $7.62M | |
| Minnkota Power Coop, Inc | Grand Forks, ND | Cooperative | 3 | 4.1 TWh | Jun 2026 | Oct 2025 | $19.00M | $33.38M |
| Missouri Basin MUNI Power AGNY | Sioux Falls, SD | Political Subdivision | 1 | 2.1 GWh | Dec 2025 | Oct 2025 | $4.93M | |
| Missouri Joint Municipal Electric Utility Commission | Columbia, MO | - | - | - | Oct 2025 | $46.71M | $10.83M | |
| Modesto Irrigation District | Modesto, CA | Political Subdivision | 5 | 310.2 GWh | Jun 2026 | Oct 2025 | $47.02M | |
| Moffett Solar 1, LLC | Bluffton, SC | Independent Power Producer | - | - | Dec 2021 | Oct 2025 | $2.20M |
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 | Jun 2026 | Nuclear |
| Barry | Bucks, Alabama | 13 TWh | Jan 1954 | Jun 2026 | Natural Gas : 97.3% Bituminous Coal : 2.7% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | Jun 2026 | Nuclear |
| Bowen | Cartersville, Georgia | 13 TWh | Sep 1971 | Jun 2026 | Bituminous Coal : 99.8% |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | Jun 2026 | Nuclear |
| Browns Ferry | Decatur, Alabama | 31 TWh | Jul 1974 | Jun 2026 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 15 TWh | Oct 1975 | Jun 2026 | Nuclear |
| Byron Generating Station | Byron, Illinois | 20 TWh | Aug 1985 | Jun 2026 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | Jun 2026 | Nuclear |
| Catawba | York, South Carolina | 18 TWh | May 1985 | Jun 2026 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 20 TWh | Jul 1990 | Jun 2026 | Nuclear |
| Crystal River | Crystal River, Florida | 16 TWh | Sep 1966 | Jun 2026 | Natural Gas : 69.8% Bituminous Coal : 30.0% |
| Diablo Canyon | Avila Beach, California | 18 TWh | Apr 1985 | Jun 2026 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 19 TWh | Jul 1975 | Jun 2026 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | Jun 2026 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | Jun 2026 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 13 TWh | Sep 1974 | Jun 2026 | Bituminous Coal : 99.6% |
| Grand Coulee | Grand Coulee, Washington | 19 TWh | Feb 1941 | Jun 2026 | Water |
| Guernsey Power Station | Byesville, Ohio | 12 TWh | Jan 2023 | Jun 2026 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | Jun 2026 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 19 TWh | Apr 1971 | Jun 2026 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | Jun 2026 | Subbituminous Coal : 99.0% Natural Gas : 1.0% |
| Joseph M Farley | Columbia, Alabama | 15 TWh | Nov 1977 | Jun 2026 | Nuclear |
| Labadie | Labadie, Missouri | 15 TWh | May 1970 | Jun 2026 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 18 TWh | Dec 1983 | Jun 2026 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | Jun 2026 | Nuclear |
| McGuire | Huntersville, North Carolina | 19 TWh | Aug 1981 | Jun 2026 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | Jun 2026 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 15 TWh | Oct 1969 | Jun 2026 | Subbituminous Coal : 75.2% Bituminous Coal : 15.7% Petroleum Coke : 8.9% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | Jun 2026 | Nuclear |
| North Anna | Mineral, Virginia | 16 TWh | May 1978 | Jun 2026 | Nuclear |
| Oak Grove (TX) | Franklin, Texas | 12 TWh | Mar 2010 | Jun 2026 | Lignite Coal : 99.2% Natural Gas : 0.8% |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | Jun 2026 | Nuclear |
| Palo Verde | Wintersburg, Arizona | 31 TWh | Dec 1985 | Jun 2026 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | Jun 2026 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 12 TWh | May 2012 | Jun 2026 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 19 TWh | May 1971 | Jun 2026 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | Jun 2026 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 14 TWh | Dec 1960 | Jun 2026 | Water |
| Sequoyah | Soddy Daisy, Tennessee | 18 TWh | Jun 1981 | Jun 2026 | Nuclear |
| South Texas Project | Wadsworth, Texas | 20 TWh | Jul 1988 | Jun 2026 | Nuclear |
| St Lucie | Jensen Beach, Florida | 15 TWh | Apr 1976 | Jun 2026 | Nuclear |
| Surry | Surry, Virginia | 12 TWh | Nov 1972 | Jun 2026 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 20 TWh | May 1983 | Jun 2026 | Nuclear |
| Turkey Point | Homestead, Florida | 20 TWh | Mar 1967 | Jun 2026 | Nuclear : 64.6% Natural Gas : 35.4% |
| Union Power Station | El Dorado, Arkansas | 13 TWh | Dec 2002 | Jun 2026 | Natural Gas |
| Vogtle | Waynesboro, Georgia | 37 TWh | Apr 1987 | Jun 2026 | Nuclear |
| W A Parish | Thompsons, Texas | 14 TWh | May 1958 | Jun 2026 | Subbituminous Coal : 81.2% Natural Gas : 18.8% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 20 TWh | Apr 1996 | Jun 2026 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 18 TWh | Jul 2009 | Jun 2026 | Natural Gas |