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 |
|---|---|---|---|---|---|---|---|---|
| Massachusetts Water Res AUTH | Boston, MA | State-Owned Utility | 3 | 2.1 GWh | Dec 2025 | - | ||
| Massachusetts Mun Wholes Electric Co | Ludlow, MA | Political Subdivision | 6 | 169.5 GWh | Aug 2026 | - | ||
| Massachusetts Inst Of Tech | Cambridge, MA | Commercial | 1 | 227.6 GWh | Dec 2025 | - | ||
| Massachusetts Electric Co | Brooklyn, NY | Investor-Owned Utility | 3 | 3.9 GWh | Dec 2025 | Oct 2025 | $29.93M | $75.60M |
| Massachusetts Department Of Correction | Bridgewater, MA | State-Owned Utility | 1 | 1.3 GWh | Dec 2025 | - | ||
| Massachusetts Bay Trans AUTH | Jamaica Plain, MA | State-Owned Utility | 1 | 469.9 MWh | Dec 2025 | - | ||
| Mass Solar, LLC | The Woodlands, TX | Independent Power Producer | 4 | 21.5 GWh | Dec 2025 | - | ||
| Mas Durham Power, LLC | Nashville, TN | Independent Power Producer | 1 | 13.1 GWh | Dec 2025 | - | ||
| Marysville Hydro Partners | Boise, ID | Independent Power Producer | 1 | 46.1 GWh | Dec 2025 | - | ||
| Maryland Environmental Service | Westover, MD | State-Owned Utility | 1 | 15.9 GWh | Aug 2026 | - | ||
| Martinsville Onsite Generation, LLC | Columbus, OH | - | - | - | Sep 2025 | $240.52k | ||
| Martinez Refining Co | Martinez, CA | Industrial | 1 | 723.8 GWh | Aug 2026 | Sep 2025 | $1.83M | |
| Martin County Solar Project, LLC | Houston, TX | Independent Power Producer | 1 | 242.6 GWh | Aug 2026 | Oct 2025 | $2.65M | |
| Marshall Wind Farm, LLC | Edina, MN | Independent Power Producer | 6 | 21.8 GWh | Dec 2025 | - | ||
| Marshall Wind Energy LLC | De SOTO, IA | Independent Power Producer | - | - | - | Sep 2025 | $2.64M | |
| Marshall Solar Energy Project | Juno Beach, FL | Independent Power Producer | 2 | 111.3 GWh | Aug 2026 | - | ||
| Marsh Valley Development Inc | Ivins, UT | Independent Power Producer | 1 | 3.5 GWh | Dec 2025 | - | ||
| Marsh Landing LLC | Antioch, CA | Independent Power Producer | 1 | 29.9 GWh | Aug 2026 | Oct 2025 | $17.93M | |
| Mars Wrigley Confectionery US, LLC | Hackettstown, NJ | Commercial | 1 | 58.1 GWh | Dec 2025 | - | ||
| Mars Hill Road Solar Farm, LLC | New York, NY | Independent Power Producer | 1 | 4.1 GWh | Dec 2025 | - | ||
| Marquam Creek Solar, LLC | New York, NY | Independent Power Producer | 1 | 919.0 MWh | Oct 2025 | - | ||
| Marlow Solar, LLC | Safety Harbor, FL | Independent Power Producer | 1 | 4.4 GWh | Dec 2025 | - | ||
| Marlborough Solar, LLC | Boston, MA | Independent Power Producer | 1 | 3.4 GWh | Dec 2025 | - | ||
| Marlboro Mushroom | West Grove, PA | Commercial | 1 | 1.4 GWh | Dec 2025 | - | ||
| Markum Solar Farm, LLC | Valley Mills, TX | Independent Power Producer | 1 | 410.6 GWh | Aug 2026 | - | ||
| Mariposa Energy, LLC | LOS Angeles, CA | - | - | - | Oct 2025 | $4.70M | ||
| Marion Wind 23, LLC | Findlay, OH | Industrial | 1 | 6.5 GWh | Dec 2024 | - | ||
| Marion Solar LLC | New York, NY | Independent Power Producer | 2 | 7.3 GWh | Dec 2025 | - | ||
| Marion County Solar Project, LLC | Kansas City, MO | Independent Power Producer | 1 | 114.5 GWh | Aug 2026 | - | ||
| Marina Energy LLC | Folsom, NJ | Independent Power Producer | 3 | 11.3 GWh | Dec 2025 | May 2022 | ||
| Marie's Way Solar I, LLC | New York, NY | Independent Power Producer | 1 | 6.8 GWh | Dec 2025 | - | ||
| Maricopa West Solar PV, LLC | San Francisco, CA | Independent Power Producer | - | - | - | Sep 2025 | $968.50k | |
| Marengo Battery Storage LLC | Marengo TWP, IL | Commercial | 1 | - | Mar 2025 | Sep 2025 | $2.48 | |
| Marcus Hook Energy LP | Marcus Hook, PA | Independent Power Producer | 1 | 6.4 TWh | Aug 2026 | Oct 2025 | $54.07M | |
| Marco Power Inc | Twin Falls, ID | Independent Power Producer | 1 | 1.1 GWh | Oct 2025 | - | ||
| Marco DM Holdings, L.L.C. | Houston, TX | - | - | - | Jun 2025 | $14.46M | $14.46M | |
| Marbury Point Solar LLC | Framingham, MA | Independent Power Producer | 1 | 5.0 GWh | Dec 2025 | - | ||
| Marble River, LLC | Houston, TX | Independent Power Producer | 1 | 501.1 GWh | Aug 2026 | Oct 2025 | $3.60M | |
| Mapleton Community Solar | Scottsdale, AZ | Independent Power Producer | 1 | 5.3 GWh | Dec 2025 | - | ||
| Maple Street Solar 1, LLC | San Francisco, CA | Independent Power Producer | 1 | 6.7 GWh | Dec 2025 | - | ||
| Maple Flats Solar Energy Center LLC | Ashwaubenon, WI | - | - | - | Sep 2025 | $6.22M | ||
| Manzana Wind LLC | Portland, OR | - | - | - | Sep 2025 | $15.52M | ||
| Manville Hill Road Solar LLC | Cumberland, RI | Independent Power Producer | 1 | 6.7 GWh | Dec 2025 | - | ||
| Mantisi Solar LLC | New York, NY | Independent Power Producer | 1 | 9.5 GWh | Dec 2025 | - | ||
| Mankato Energy Center, LLC | Denver, CO | - | - | - | Sep 2025 | $11.95M | ||
| Mankato Energy Center II, LLC | Denver, CO | - | - | - | Sep 2025 | $8.68M | ||
| Manitowoc Public Utilities | Manitowoc, WI | Municipally-Owned Utility | 2 | 197.0 GWh | Aug 2026 | Apr 2024 | ||
| Manchester Street, LLC. | Providence, RI | Independent Power Producer | 1 | 2.5 TWh | Aug 2026 | Sep 2025 | $28.13M | |
| Mammoth Three LLC | Reno, NV | - | - | - | Sep 2025 | $1.30M | ||
| Mammoth Plains Wind Project | Juno Beach, FL | Independent Power Producer | 1 | 667.9 GWh | Dec 2025 | Sep 2025 | $1.59M | |
| Mammoth One LLC | Reno, NV | - | - | - | Sep 2025 | $2.45M | ||
| Mammoth North, LLC | Philadelphia, PA | Independent Power Producer | 1 | 838.5 GWh | Aug 2026 | Oct 2025 | $10.42M | |
| Malaga Power, LLC | San Diego, CA | - | - | - | Oct 2025 | $4.25M | ||
| Malaga Bess LLC | Chicago, IL | Independent Power Producer | 1 | -4.5 GWh | Aug 2026 | Oct 2025 | $527.40k | |
| Malacha Hydro Ltd Partnership | Marlborough, MA | Independent Power Producer | 1 | 89.8 GWh | Dec 2025 | Sep 2025 | $2.24M | |
| Major Oak Power, LLC | Bremond, TX | Independent Power Producer | 1 | 2.5 TWh | Aug 2026 | - | ||
| Major Energy Electric Services, LLC | Houston, TX | - | - | - | Oct 2025 | $421.57k | ||
| Maine Waste To Energy | Auburn, ME | Municipally-Owned Utility | 1 | 8.1 GWh | Aug 2026 | - | ||
| Maine DG Solar Pittsfield, LLC | Boston, MA | Independent Power Producer | 1 | 8.7 GWh | Dec 2025 | - | ||
| Maine DG Solar Monmouth, LLC | Boston, MA | Independent Power Producer | 1 | 9.8 GWh | Dec 2025 | - | ||
| Maine DG Solar Harmony, LLC | Boston, MA | Independent Power Producer | 1 | 9.3 GWh | Dec 2025 | - | ||
| Maine DG Solar Baldwin, LLC | Boston, MA | Independent Power Producer | 1 | 10.0 GWh | Dec 2025 | - | ||
| Maine DG Solar Augusta, LLC | Boston, MA | Independent Power Producer | 1 | 5.0 GWh | Dec 2025 | - | ||
| Mahoning Creek Hydroelectric Company LLC | Chevy Chase, MD | Independent Power Producer | - | - | Dec 2020 | Oct 2025 | $271.89k | |
| Mahipapa LLC | Honolulu, HI | Independent Power Producer | 1 | 29.1 GWh | Dec 2025 | - | ||
| Magruder Solar, LLC | Westport, CT | Independent Power Producer | 1 | 335.0 MWh | Dec 2025 | - | ||
| Magnolia Power Holdings LLC | Princeton, NJ | Independent Power Producer | 1 | 2.9 TWh | Aug 2026 | - | ||
| Magdaline Solar, LLC | Jersey City, NJ | Independent Power Producer | 1 | 4.1 GWh | Dec 2025 | - | ||
| Madison Gas & Electric Co | Madison, WI | Investor-Owned Utility | 20 | 939.1 GWh | Aug 2026 | Oct 2025 | $31.93M | $919.38k |
| Madison Fields Solar Project, LLC | Kansas City, MO | Independent Power Producer | 1 | 431.7 GWh | Aug 2026 | Oct 2025 | $5.69M | |
| Madison Ess, LLC | Wakefield, MA | - | - | - | Sep 2025 | $291.38k | ||
| Madison Energy Investments LLC | Vienna, VA | Independent Power Producer | 92 | 351.6 GWh | Aug 2026 | - | ||
| Madison Energy Holdings LLC | Tysons, VA | Independent Power Producer | 52 | 169.7 GWh | Dec 2025 | - | ||
| Madison BTM, LLC | Wakefield, MA | - | - | - | Sep 2025 | $15.71k | ||
| Madera DP 2, LLC | Valencia, CA | Independent Power Producer | 1 | 12.6 GWh | Dec 2025 | - | ||
| Macys Corporate Services, Inc | Johns Creek, GA | Commercial | 1 | 3.1 GWh | Dec 2024 | - | ||
| Macquarie Energy Trading LLC | Houston, TX | - | - | - | Oct 2025 | $341.93M | $102.63M | |
| Macho Springs Solar, LLC | Birmingham, AL | - | - | - | Sep 2025 | $2.31M | ||
| Macbeth Solar, LLC | Wilmington, DE | Independent Power Producer | 1 | 38.2 GWh | Dec 2025 | - | ||
| Macadamia Nut Road Solar Project 2019 | Schenectady, NY | Independent Power Producer | 1 | 1.5 GWh | Dec 2025 | - | ||
| MAAS Energy Works | Redding, CA | Independent Power Producer | 7 | 15.7 GWh | Dec 2025 | - | ||
| Ma CS Ware West, LLC | San Francisco, CA | Independent Power Producer | 1 | 2.5 GWh | Dec 2025 | - | ||
| Ma CS Uxbridge, LLC | San Francisco, CA | Independent Power Producer | 1 | 6.8 GWh | Dec 2025 | - | ||
| Ma CS Dighton, LLC | New York, NY | Independent Power Producer | 1 | 6.1 GWh | Dec 2025 | - | ||
| LYRA Community Solar | Scottsdale, AZ | Independent Power Producer | 1 | 4.9 GWh | Dec 2025 | - | ||
| Lyonsdale Hydroelectric Co., Inc. | Houston, TX | Independent Power Producer | 1 | 4.2 GWh | Dec 2025 | - | ||
| Lyons Solar, LLC | Chapel Hill, NC | Independent Power Producer | 1 | 36.1 GWh | Dec 2025 | - | ||
| Lyons Road Solar, LLC | Wilmington, DE | Independent Power Producer | 1 | 42.1 GWh | Dec 2025 | - | ||
| LWP Lessee, LLC | Phoenix, AZ | - | - | - | Oct 2025 | $6.11M | ||
| LUZ Solar | El Segundo, CA | Independent Power Producer | 1 | 1.4 GWh | Dec 2025 | - | ||
| Luther College Wind Energy Project LLC | Decorah, IA | Independent Power Producer | 1 | 2.1 GWh | Dec 2025 | - | ||
| Luning Energy LLC | Tahoe VIsta, CA | - | - | - | Sep 2025 | $1.49M | ||
| LUND Hill Solar, LLC | Portland, OR | - | - | - | Sep 2025 | $5.30M | ||
| Luna Valley Solar I, LLC | San Francisco, CA | Independent Power Producer | 1 | 411.4 GWh | Aug 2026 | Sep 2025 | ||
| Luminant Miami Fort | North Bend, OH | Independent Power Producer | 1 | 7.2 TWh | Aug 2026 | - | ||
| Luminant Generation Company LLC | Irving, TX | |Independent Power Producer | 29 | 51.0 TWh | Aug 2026 | - | ||
| Luminant Dick's Creek | Monroe, OH | Independent Power Producer | 1 | 15.8 GWh | Dec 2025 | - | ||
| Luminace Sunbeam Development Holdings, LLC | Baltimore, MD | Independent Power Producer | 8 | 42.6 GWh | Dec 2025 | - | ||
| Luminace Solar Rhode Island, LLC | New York, NY | Independent Power Producer | 1 | 5.1 GWh | Dec 2025 | - | ||
| Luminace Solar New Jersey, LLC | New York, NY | Independent Power Producer | 5 | 14.4 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 | Aug 2026 | Nuclear |
| Barry | Bucks, Alabama | 14 TWh | Jan 1954 | Aug 2026 | Natural Gas : 96.4% Bituminous Coal : 3.6% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | Aug 2026 | Nuclear |
| Bowen | Cartersville, Georgia | 13 TWh | Sep 1971 | Aug 2026 | Bituminous Coal : 99.8% |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | Aug 2026 | Nuclear |
| Browns Ferry | Decatur, Alabama | 31 TWh | Jul 1974 | Aug 2026 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 15 TWh | Oct 1975 | Aug 2026 | Nuclear |
| Byron Generating Station | Byron, Illinois | 20 TWh | Aug 1985 | Aug 2026 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | Aug 2026 | Nuclear |
| Catawba | York, South Carolina | 18 TWh | May 1985 | Aug 2026 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 20 TWh | Jul 1990 | Aug 2026 | Nuclear |
| Crystal River | Crystal River, Florida | 16 TWh | Sep 1966 | Aug 2026 | Natural Gas : 69.9% Bituminous Coal : 29.9% |
| Diablo Canyon | Avila Beach, California | 19 TWh | Apr 1985 | Aug 2026 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 18 TWh | Jul 1975 | Aug 2026 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | Aug 2026 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | Aug 2026 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 12 TWh | Sep 1974 | Aug 2026 | Bituminous Coal : 99.5% |
| Grand Coulee | Grand Coulee, Washington | 19 TWh | Feb 1941 | Aug 2026 | Water |
| Guernsey Power Station | Byesville, Ohio | 12 TWh | Jan 2023 | Aug 2026 | Natural Gas |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | Aug 2026 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 19 TWh | Apr 1971 | Aug 2026 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | Aug 2026 | Subbituminous Coal : 99.1% Natural Gas : 0.9% |
| Joseph M Farley | Columbia, Alabama | 15 TWh | Nov 1977 | Aug 2026 | Nuclear |
| Labadie | Labadie, Missouri | 15 TWh | May 1970 | Aug 2026 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 19 TWh | Dec 1983 | Aug 2026 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | Aug 2026 | Nuclear |
| McGuire | Huntersville, North Carolina | 19 TWh | Aug 1981 | Aug 2026 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | Aug 2026 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 15 TWh | Oct 1969 | Aug 2026 | Subbituminous Coal : 75.1% Bituminous Coal : 15.7% Petroleum Coke : 9.0% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | Aug 2026 | Nuclear |
| North Anna | Mineral, Virginia | 16 TWh | May 1978 | Aug 2026 | Nuclear |
| Oak Grove (TX) | Franklin, Texas | 12 TWh | Mar 2010 | Aug 2026 | Lignite Coal : 99.3% Natural Gas : 0.7% |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | Aug 2026 | Nuclear |
| Palo Verde | Wintersburg, Arizona | 31 TWh | Dec 1985 | Aug 2026 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | Aug 2026 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 12 TWh | May 2012 | Aug 2026 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 19 TWh | May 1971 | Aug 2026 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | Aug 2026 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 14 TWh | Dec 1960 | Aug 2026 | Water |
| Sequoyah | Soddy Daisy, Tennessee | 18 TWh | Jun 1981 | Aug 2026 | Nuclear |
| South Texas Project | Wadsworth, Texas | 20 TWh | Jul 1988 | Aug 2026 | Nuclear |
| St Lucie | Jensen Beach, Florida | 15 TWh | Apr 1976 | Aug 2026 | Nuclear |
| Surry | Surry, Virginia | 12 TWh | Nov 1972 | Aug 2026 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 20 TWh | May 1983 | Aug 2026 | Nuclear |
| Turkey Point | Homestead, Florida | 20 TWh | Mar 1967 | Aug 2026 | Nuclear : 64.7% Natural Gas : 35.3% |
| Union Power Station | El Dorado, Arkansas | 13 TWh | Dec 2002 | Aug 2026 | Natural Gas |
| Vogtle | Waynesboro, Georgia | 37 TWh | Apr 1987 | Aug 2026 | Nuclear |
| W A Parish | Thompsons, Texas | 14 TWh | May 1958 | Aug 2026 | Subbituminous Coal : 82.1% Natural Gas : 17.9% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 20 TWh | Apr 1996 | Aug 2026 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 18 TWh | Jul 2009 | Aug 2026 | Natural Gas : 99.9% |