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 |
|---|---|---|---|---|---|---|---|---|
| Union Electric Co - (Mo) | St Louis, MO | Investor-Owned Utility | 34 | 34.7 TWh | May 2026 | Oct 2025 | $687.14M | $457.50k |
| Upper Missouri G. & T. Electric Cooperative, Inc. | Sidney, MT | - | - | - | Sep 2025 | $218.04M | $222.86M | |
| United Illuminating Co | Orange, CT | Investor-Owned Utility | 3 | 55.7 GWh | May 2026 | Sep 2025 | $20.21M | $64.93M |
| Upper Michigan Energy Resources Company | Milwaukee, MI | Investor-Owned Utility | 3 | 593.7 GWh | May 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 |
| University Park Energy LLC | University Park, IL | Independent Power Producer | 1 | 157.7 GWh | Dec 2025 | Sep 2025 | $5.01M | $55.25k |
| Uns Electric, Inc | Tucson, AZ | Investor-Owned Utility | 5 | 78.5 GWh | Dec 2025 | Sep 2025 | $3.99M | $15.44M |
| Unbridled Solar, LLC | Bloomington, MN | - | - | - | Oct 2025 | $3.80M | ||
| USG Oregon LLC | Reno, NV | - | - | - | Sep 2025 | $3.76M | ||
| Umbriel Solar, LLC | Boston, MA | Independent Power Producer | 1 | 348.1 GWh | May 2026 | Sep 2025 | $3.71M | |
| Union Carbide Corp-Seadrift | Midland, MI | Industrial | 2 | 713.8 GWh | May 2026 | Oct 2025 | $3.22M | |
| Unitil Energy Systems, Inc. | Hampton, NH | - | - | - | Sep 2025 | $1.80M | $2.84M | |
| USG Nevada LLC | Boise, ID | Independent Power Producer | 2 | 84.0 GWh | Dec 2025 | Sep 2025 | $1.69M | |
| Upstream Wind Energy LLC | Ashwaubenon, WI | - | - | - | Oct 2025 | $1.36M | ||
| UGI Utilities Inc. | Denver, PA | - | - | - | Oct 2025 | $1.14M | $11.48M | |
| UGI Energy Services, LLC | Wyomissing, PA | Independent Power Producer|Industrial | 3 | 7.3 GWh | May 2026 | Oct 2025 | $511.64k | |
| U S Borax Inc | Boron, CA | Independent Power Producer | 1 | 280.8 GWh | May 2026 | Oct 2025 | $445.85k | |
| UIL Distributed Resources, LLC | New Haven, CT | Independent Power Producer | 1 | 17.0 GWh | Dec 2025 | Sep 2025 | $442.55k | |
| U.S. Energy Partners, LLC | Garden City, NY | - | - | - | Oct 2025 | $80.39k | $91.91k | |
| U S Air Force-Eielson AFB | Eielson AFB, AK | Federally-Owned Utility | 1 | 85.2 GWh | Dec 2025 | - | ||
| U.S. Army - Radford | Radford, VA | Federally-Owned Utility | 1 | 35.9 GWh | Dec 2025 | - | ||
| U S Bureau Of Reclamation | Denver, CO | Federally-Owned Utility | 60 | 35.0 TWh | May 2026 | Nov 2022 | ||
| U.S. General Services Administration | Indianapolis, IN | Federally-Owned Utility | 1 | 519.0 MWh | Dec 2024 | Sep 2025 | $5.59M | |
| U S Gypsum Co | Chicago, IL | Industrial | 1 | 17.4 GWh | Dec 2025 | - | ||
| Ub Fuel Cell | Bridgeport, CT | Commercial | 1 | 10.1 GWh | Dec 2025 | - | ||
| Ulster Solar LLC | Juno Beach, FL | Commercial | - | 1.6 GWh | Dec 2024 | - | ||
| Ulysses Solar, LLC | Washington, DC | Independent Power Producer | - | 1.6 GWh | Dec 2024 | - | ||
| Unalakleet Valley ELEC Coop | Unalakleet, AK | Cooperative | 1 | 4.0 GWh | Dec 2024 | - | ||
| Underhill Solar LLC | San Francisco, CA | Independent Power Producer | 1 | 3.4 GWh | Dec 2025 | - | ||
| Union Falls Hydro Power LP | Montreal, QB | Independent Power Producer | 1 | 10.6 GWh | Dec 2025 | - | ||
| Unisea Inc | Dutch Harbor, AK | Independent Power Producer | 1 | 30.3 GWh | Dec 2025 | - | ||
| Unison Energy LLC | Greenwich, CT | Independent Power Producer | 1 | 20.6 GWh | Dec 2025 | - | ||
| United States Solar Corporation | Fairfield, CT | Independent Power Producer | 68 | 131.9 GWh | Dec 2025 | - | ||
| United States Sugar Corp | Clewiston, FL | Industrial | 2 | 270.9 GWh | May 2026 | - | ||
| United Technologies | East Hartford, CT | Industrial | 1 | 75.9 GWh | May 2026 | - | ||
| United Therapeutics Corporation | Silver Spring, MD | Independent Power Producer | 1 | 9.7 GWh | Dec 2025 | - | ||
| University Of Alaska | Fairbanks, AK | State-Owned Utility | 1 | 61.6 GWh | May 2026 | - | ||
| University Of Arizona | Tucson, AZ | State-Owned Utility | 3 | 101.5 GWh | May 2026 | - | ||
| University Of Arkansas | Fayetteville, AR | Commercial | 1 | 38.0 GWh | Dec 2025 | - | ||
| University Of California Irvine | Irvine, CA | State-Owned Utility | 1 | 123.5 GWh | May 2026 | - | ||
| University Of California-La | LOS Angeles, CA | |Commercial | 2 | 247.6 GWh | May 2026 | - | ||
| University Of California San Diego | La Jolla, CA | State-Owned Utility | 2 | 227.1 GWh | May 2026 | - | ||
| University Of California, San Francisco | San Francisco, CA | Commercial | 1 | 72.2 GWh | May 2026 | - | ||
| University Of California Santa CRUZ | Santa CRUZ, CA | State-Owned Utility | 1 | 36.5 GWh | Dec 2025 | - | ||
| University Of Cincinnati | Cincinatti, OH | Commercial | 2 | 244.6 GWh | May 2026 | - | ||
| University Of Connecticut | Storrs, CT | State-Owned Utility | 1 | 113.5 GWh | May 2026 | - | ||
| University Of Illinois | Champaign, IL | State-Owned Utility | 2 | 353.2 GWh | May 2026 | - | ||
| University Of Massachusetts Amherst | Amherst, MA | State-Owned Utility | 1 | 89.3 GWh | Dec 2025 | - | ||
| University Of Massachusetts Medical | Worcester, MA | State-Owned Utility | 1 | 72.2 GWh | Dec 2025 | - | ||
| University Of Michigan | ANN Arbor, MI | Commercial | 2 | 277.6 GWh | May 2026 | - | ||
| University Of Minnesota Central Utilities | Minneapolis, MN | Industrial | 2 | 187.8 GWh | Jan 2026 | - | ||
| University Of Minnesota Morris Campus | Morris, MN | State-Owned Utility | 1 | 3.4 GWh | Dec 2025 | - | ||
| University Of Minnesota Wcroc | Morris, MN | State-Owned Utility | 1 | 1.9 GWh | Dec 2025 | - | ||
| University Of New Mexico | Albuquerque, NM | Political Subdivision | 2 | 84.9 GWh | Dec 2024 | - | ||
| University Of North Carolina | Chapel Hill, NC | State-Owned Utility | 2 | 56.7 GWh | Apr 2026 | - | ||
| University Of Northern Iowa | Cedar Falls, IA | State-Owned Utility | 1 | 24.8 GWh | May 2026 | - | ||
| University Of Notre Dame | Notre Dame, IN | Independent Power Producer | 2 | 99.6 GWh | May 2026 | - | ||
| University Of Oregon | Eugene, OR | State-Owned Utility | 1 | 650.8 MWh | Dec 2025 | - | ||
| University Of Redlands | Redlands, CA | Commercial | 1 | 4.5 GWh | Dec 2025 | - | ||
| University Of Rochester | Rochester, NY | Commercial | 1 | 26.8 GWh | Dec 2025 | - | ||
| University Of Tennessee | Knoxville, TN | State-Owned Utility | 1 | 36.0 GWh | May 2026 | - | ||
| University Of Texas At Austin | Austin, TX | State-Owned Utility | 1 | 381.1 GWh | Dec 2025 | - | ||
| UPC Power Solutions | Chicago, IL | Independent Power Producer | 9 | 48.1 GWh | Dec 2024 | - | ||
| Upton County Solar 2 LLC | Irving, TX | Independent Power Producer | 1 | 398.6 GWh | May 2026 | - | ||
| Upton Solar, LLC | Boston, MA | Independent Power Producer | 1 | 3.5 GWh | Dec 2025 | - | ||
| Urban Grid Solar | Houston, TX | Independent Power Producer | 13 | 919.8 GWh | May 2026 | - | ||
| Ursa Community Solar | Scottsdale, AZ | Independent Power Producer | 1 | 8.3 GWh | Dec 2025 | - | ||
| US Army Corps Of Engineers | St. Stephen, SC | Federally-Owned Utility | 1 | 179.0 GWh | Dec 2025 | - | ||
| US Dept Of Army, Garrison, APG | Aberdeen, MD | Federally-Owned Utility | 1 | 50.6 GWh | Dec 2025 | - | ||
| US Geothermal Inc. | Boise, ID | Independent Power Producer | 2 | 267.5 GWh | Dec 2025 | - | ||
| US GSA Heating And Transmission | Washington, DC | Federally-Owned Utility | 1 | 33.1 GWh | May 2026 | - | ||
| US Paper Mill Company | Chillicothe, OH | Industrial | 1 | 55.9 GWh | Jan 2026 | - | ||
| US Space Force | Sagamore, MA | Federally-Owned Utility | 1 | 7.0 GWh | May 2026 | - | ||
| US Sugar Savannah Refinery, LLC | Port Wentworth, GA | Industrial | 1 | 56.0 GWh | Dec 2024 | - | ||
| Usace-Detroit District | Detroit, MI | Federally-Owned Utility | 1 | 169.3 GWh | Dec 2025 | - | ||
| Usace-Fort Worth District | Fort Worth, TX | Federally-Owned Utility | 3 | 280.1 GWh | Dec 2025 | - | ||
| Usace Northwestern Division | Portland, OR | Federally-Owned Utility | 21 | 45.4 TWh | May 2026 | - | ||
| Usace-Omaha | Omaha, NE | Federally-Owned Utility | 6 | 8.1 TWh | Dec 2025 | - | ||
| USCE-Kansas City District | Kansas City, MO | Federally-Owned Utility | 2 | 286.5 GWh | May 2026 | - | ||
| USCE-Little Rock District | Little Rock, AR | Federally-Owned Utility | 7 | 2.4 TWh | Dec 2024 | - | ||
| USCE-Mobile District | Mobile, AL | Federally-Owned Utility | 8 | 1.6 TWh | May 2026 | - | ||
| USCE-Nashville District | Nashville, TN | Federally-Owned Utility | 9 | 3.4 TWh | Dec 2025 | - | ||
| USCE-Savannah District | Savannah, GA | Municipally-Owned Utility | 3 | 1.3 TWh | May 2026 | - | ||
| USCE-St Louis District | Monroe City, MO | Federally-Owned Utility | 1 | 123.4 GWh | May 2026 | - | ||
| USCE-Tulsa District | Tulsa, OK | Federally-Owned Utility | 8 | 1.1 TWh | Dec 2024 | - | ||
| USCE -Vickburg District | Royal, AR | Federally-Owned Utility | 3 | 441.5 GWh | May 2026 | - | ||
| USCE-Wilmington District | Boydton, VA | Federally-Owned Utility | 2 | 364.6 GWh | Dec 2025 | - | ||
| USF Essex Lessor, LLC | New York, NY | Independent Power Producer | 6 | 55.4 GWh | Dec 2025 | - | ||
| USF McClellan, LLC | New York, NY | Independent Power Producer | 1 | 1.4 GWh | Dec 2025 | - | ||
| USF Surry LLC | New York, NY | Independent Power Producer | 8 | 40.2 GWh | Dec 2025 | - | ||
| USS Cattail Solar LLC | Fulton, IL | Independent Power Producer | 1 | 1.3 GWh | Dec 2025 | - | ||
| USS Origami Solar LLC | Fulton, IL | Independent Power Producer | 1 | 1.1 GWh | Dec 2025 | - | ||
| Ut West Tennessee Solar Farm | Knoxville, TN | State-Owned Utility | 1 | 3.3 GWh | Dec 2025 | - | ||
| Utah Associated Mun Power SYS | Salt Lake City, UT | Political Subdivision | 4 | 1.0 TWh | May 2026 | - | ||
| Utah Municipal Power Agency | Spanish Fork, UT | Political Subdivision | 3 | 439.4 GWh | May 2026 | Oct 2025 | $311.45M | |
| Utah State University | Logan, UT | State-Owned Utility | 1 | 30.5 GWh | May 2026 | - | ||
| Utica Water & Power Authority | Angels Camp, CA | Political Subdivision | 2 | 22.9 GWh | Dec 2025 | Jul 2017 | ||
| Utility Board Of Key West City (FL) | Key West, FL | Municipally-Owned Utility | 3 | 7.1 GWh | Dec 2025 | - | ||
| Uwharrie Mountain Renewable Energy, LLC | Detroit, MI | Investor-Owned Utility | 1 | 35.1 GWh | Dec 2025 | - | ||
| UXI CSG Venture 1 8301 LLC | Seattle, WA | Independent Power Producer | 1 | 3.8 GWh | Dec 2025 | - |
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 | May 2026 | Nuclear |
| Barry | Bucks, Alabama | 12 TWh | Jan 1954 | May 2026 | Natural Gas : 97.1% Bituminous Coal : 2.9% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | May 2026 | Nuclear |
| Bowen | Cartersville, Georgia | 13 TWh | Sep 1971 | May 2026 | Bituminous Coal : 99.8% |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | May 2026 | Nuclear |
| Browns Ferry | Decatur, Alabama | 31 TWh | Jul 1974 | May 2026 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 15 TWh | Oct 1975 | May 2026 | Nuclear |
| Byron Generating Station | Byron, Illinois | 20 TWh | Aug 1985 | May 2026 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | May 2026 | Nuclear |
| Catawba | York, South Carolina | 18 TWh | May 1985 | May 2026 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 20 TWh | Jul 1990 | May 2026 | Nuclear |
| Crystal River | Crystal River, Florida | 16 TWh | Sep 1966 | May 2026 | Natural Gas : 68.9% Bituminous Coal : 30.9% |
| Diablo Canyon | Avila Beach, California | 18 TWh | Apr 1985 | May 2026 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 19 TWh | Jul 1975 | May 2026 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | May 2026 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | May 2026 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 13 TWh | Sep 1974 | May 2026 | Bituminous Coal : 99.6% |
| Grand Coulee | Grand Coulee, Washington | 18 TWh | Feb 1941 | May 2026 | Water |
| Guernsey Power Station | Byesville, Ohio | 12 TWh | Jan 2023 | May 2026 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | May 2026 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 18 TWh | Apr 1971 | May 2026 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | May 2026 | Subbituminous Coal : 99.0% Natural Gas : 1.0% |
| Joseph M Farley | Columbia, Alabama | 15 TWh | Nov 1977 | May 2026 | Nuclear |
| Labadie | Labadie, Missouri | 15 TWh | May 1970 | May 2026 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 18 TWh | Dec 1983 | May 2026 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | May 2026 | Nuclear |
| McGuire | Huntersville, North Carolina | 19 TWh | Aug 1981 | May 2026 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | May 2026 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 16 TWh | Oct 1969 | May 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 | May 2026 | Nuclear |
| North Anna | Mineral, Virginia | 16 TWh | May 1978 | May 2026 | Nuclear |
| Oak Grove (TX) | Franklin, Texas | 12 TWh | Mar 2010 | May 2026 | Lignite Coal : 99.1% Natural Gas : 0.9% |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | May 2026 | Nuclear |
| Palo Verde | Wintersburg, Arizona | 31 TWh | Dec 1985 | May 2026 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | May 2026 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 12 TWh | May 2012 | May 2026 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 19 TWh | May 1971 | May 2026 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | May 2026 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 14 TWh | Dec 1960 | May 2026 | Water |
| Sequoyah | Soddy Daisy, Tennessee | 17 TWh | Jun 1981 | May 2026 | Nuclear |
| South Texas Project | Wadsworth, Texas | 21 TWh | Jul 1988 | May 2026 | Nuclear |
| St Lucie | Jensen Beach, Florida | 15 TWh | Apr 1976 | May 2026 | Nuclear |
| Surry | Surry, Virginia | 12 TWh | Nov 1972 | May 2026 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 19 TWh | May 1983 | May 2026 | Nuclear |
| Turkey Point | Homestead, Florida | 20 TWh | Mar 1967 | May 2026 | Nuclear : 64.2% Natural Gas : 35.8% |
| Union Power Station | El Dorado, Arkansas | 12 TWh | Dec 2002 | May 2026 | Natural Gas |
| Vogtle | Waynesboro, Georgia | 37 TWh | Apr 1987 | May 2026 | Nuclear |
| W A Parish | Thompsons, Texas | 14 TWh | May 1958 | May 2026 | Subbituminous Coal : 81.6% Natural Gas : 18.4% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 20 TWh | Apr 1996 | May 2026 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 18 TWh | Jul 2009 | May 2026 | Natural Gas |