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 |
|---|---|---|---|---|---|---|---|---|
| Ma CS Dighton, LLC | New York, NY | Independent Power Producer | 1 | 2.4 GWh | Dec 2024 | - | ||
| Ma CS Uxbridge, LLC | San Francisco, CA | Independent Power Producer | 1 | 7.6 GWh | Dec 2024 | - | ||
| Ma CS Ware West, LLC | San Francisco, CA | Independent Power Producer | 1 | 2.5 GWh | Dec 2024 | - | ||
| MAAS Energy Works | Redding, CA | Independent Power Producer | 4 | 4.3 GWh | Dec 2024 | - | ||
| Macadamia Nut Road Solar Project 2019 | Schenectady, NY | Independent Power Producer | 1 | 1.4 GWh | Dec 2024 | - | ||
| Macbeth Solar, LLC | Santa Monica, CA | Independent Power Producer | 1 | 39.7 GWh | Dec 2024 | - | ||
| Macho Springs Power I, LLC | Calgary, AB | - | - | - | Oct 2025 | $3.45M | ||
| Macho Springs Solar, LLC | Birmingham, AL | - | - | - | Sep 2025 | $2.31M | ||
| Macquarie Energy Trading LLC | Houston, TX | - | - | - | Oct 2025 | $341.93M | $102.63M | |
| Macys Corporate Services, Inc | Johns Creek, GA | Commercial | 1 | 3.1 GWh | Dec 2024 | - | ||
| Madera DP 2, LLC | Valencia, CA | Independent Power Producer | 1 | 12.9 GWh | Dec 2024 | - | ||
| Madison BTM, LLC | Wakefield, MA | - | - | - | Sep 2025 | $15.71k | ||
| Madison Energy Holdings LLC | Tysons, VA | Independent Power Producer | 52 | 181.3 GWh | Dec 2024 | - | ||
| Madison Energy Investments LLC | Vienna, VA | Independent Power Producer | 43 | 64.2 GWh | Dec 2025 | - | ||
| Madison Ess, LLC | Wakefield, MA | - | - | - | Sep 2025 | $291.38k | ||
| Madison Fields Solar Project, LLC | Kansas City, MO | Independent Power Producer | 1 | 392.7 GWh | Dec 2025 | Oct 2025 | $5.69M | |
| Madison Gas & Electric Co | Madison, WI | Investor-Owned Utility | 17 | 857.7 GWh | Dec 2025 | Oct 2025 | $31.93M | $919.38k |
| Mag Energy Solutions Inc. | Montreal, QC | - | - | - | Oct 2025 | $131.08M | $7.98M | |
| Magdaline Solar, LLC | Jersey City, NJ | Independent Power Producer | 1 | 2.9 GWh | Dec 2024 | - | ||
| Magnolia Power Holdings LLC | Princeton, NJ | Independent Power Producer | 1 | 100.3 GWh | Dec 2025 | - | ||
| Mahipapa LLC | Honolulu, HI | Independent Power Producer | 1 | 10.3 GWh | Dec 2024 | - | ||
| Mahoning Creek Hydroelectric Company LLC | Chevy Chase, MD | Independent Power Producer | - | - | Dec 2020 | Oct 2025 | $271.89k | |
| Maine DG Solar Augusta, LLC | Boston, MA | Independent Power Producer | 1 | 4.8 GWh | Dec 2024 | - | ||
| Maine DG Solar Baldwin, LLC | Boston, MA | Independent Power Producer | 1 | 10.1 GWh | Dec 2024 | - | ||
| Maine DG Solar Harmony, LLC | Boston, MA | Independent Power Producer | 1 | 9.2 GWh | Dec 2024 | - | ||
| Maine DG Solar Monmouth, LLC | Boston, MA | Independent Power Producer | 1 | 9.6 GWh | Dec 2024 | - | ||
| Maine DG Solar Pittsfield, LLC | Boston, MA | Independent Power Producer | 1 | 8.7 GWh | Dec 2024 | - | ||
| Maine Waste To Energy | Auburn, ME | Municipally-Owned Utility | 1 | 11.0 GWh | Dec 2025 | - | ||
| Major Energy Electric Services, LLC | Houston, TX | - | - | - | Oct 2025 | $421.57k | ||
| Major Oak Power, LLC | Bremond, TX | Independent Power Producer | 1 | 2.4 TWh | Dec 2025 | - | ||
| Malacha Hydro Ltd Partnership | Marlborough, MA | Independent Power Producer | - | - | Dec 2018 | Sep 2025 | $2.24M | |
| Malaga Bess LLC | Chicago, IL | Independent Power Producer | 1 | -3.4 GWh | Dec 2025 | Oct 2025 | $527.40k | |
| Malaga Power, LLC | San Diego, CA | - | - | - | Oct 2025 | $4.25M | ||
| Malmedal Garden LLC | Minneapolis, MN | Independent Power Producer | 1 | 1.7 GWh | Dec 2024 | - | ||
| Mammoth North, LLC | Philadelphia, PA | Independent Power Producer | 1 | 770.5 GWh | Dec 2025 | Oct 2025 | $10.42M | |
| Mammoth One LLC | Reno, NV | - | - | - | Sep 2025 | $2.45M | ||
| Mammoth Plains Wind Project | Juno Beach, FL | Independent Power Producer | 1 | 790.8 GWh | Dec 2024 | Sep 2025 | $1.59M | |
| Mammoth Three LLC | Reno, NV | - | - | - | Sep 2025 | $1.30M | ||
| Manchester Street, LLC. | Providence, RI | Independent Power Producer | 1 | 2.0 TWh | Dec 2025 | Sep 2025 | $28.13M | |
| Manitowoc Public Utilities | Manitowoc, WI | Municipally-Owned Utility | 2 | 140.9 GWh | Dec 2025 | Apr 2024 | ||
| Mankato Energy Center II, LLC | Denver, CO | - | - | - | Sep 2025 | $8.68M | ||
| Mankato Energy Center, LLC | Denver, CO | - | - | - | Sep 2025 | $11.95M | ||
| Mantisi Solar LLC | New York, NY | Independent Power Producer | 1 | 6.5 GWh | Dec 2024 | - | ||
| Mantua Creek Solar, LLC | Juno Beach, FL | - | - | - | Oct 2025 | $58.55k | ||
| Manzana Wind LLC | Portland, OR | - | - | - | Sep 2025 | $15.52M | ||
| Maple Flats Solar Energy Center LLC | Ashwaubenon, WI | - | - | - | Sep 2025 | $6.22M | ||
| Maple Street Solar 1, LLC | San Francisco, CA | Independent Power Producer | 1 | 7.2 GWh | Dec 2024 | - | ||
| Mapleton Community Solar | Scottsdale, AZ | Independent Power Producer | 1 | 5.2 GWh | Dec 2024 | - | ||
| Marble River, LLC | Houston, TX | Independent Power Producer | 1 | 529.4 GWh | Dec 2025 | Oct 2025 | $3.60M | |
| Marbury Point Solar LLC | Framingham, MA | Independent Power Producer | 1 | 5.8 GWh | Dec 2024 | - | ||
| Marco DM Holdings, L.L.C. | Houston, TX | - | - | - | Jun 2025 | $14.46M | $14.46M | |
| Marcus Hook Energy LP | Marcus Hook, PA | Independent Power Producer | 1 | 6.2 TWh | Dec 2025 | Oct 2025 | $54.07M | |
| Marengo Battery Storage LLC | Marengo TWP, IL | Commercial | 1 | -269.0 MWh | Mar 2025 | Sep 2025 | $2.48 | |
| Maricopa West Solar PV, LLC | San Francisco, CA | Independent Power Producer | - | - | - | Sep 2025 | $968.50k | |
| Marie's Way Solar I, LLC | New York, NY | Independent Power Producer | 1 | 6.5 GWh | Dec 2024 | - | ||
| Marina Energy LLC | Folsom, NJ | Independent Power Producer | 3 | 11.5 GWh | Dec 2024 | May 2022 | ||
| Marion Solar LLC | New York, NY | Independent Power Producer | 2 | 7.6 GWh | Dec 2024 | - | ||
| Mariposa Energy, LLC | LOS Angeles, CA | - | - | - | Oct 2025 | $4.70M | ||
| Markum Solar Farm, LLC | Valley Mills, TX | Independent Power Producer | 1 | 383.6 GWh | Dec 2025 | - | ||
| Marlboro Mushroom | West Grove, PA | Commercial | 1 | 1.3 GWh | Dec 2024 | - | ||
| Marlborough Solar, LLC | Boston, MA | Independent Power Producer | 1 | 3.6 GWh | Dec 2024 | - | ||
| Marlow Solar, LLC | Safety Harbor, FL | Independent Power Producer | 1 | 4.5 GWh | Dec 2024 | - | ||
| Mars Wrigley Confectionery US, LLC | Hackettstown, NJ | Commercial | 1 | 45.3 GWh | Dec 2024 | - | ||
| Marsh Landing LLC | Antioch, CA | Independent Power Producer | 1 | 14.9 GWh | Dec 2025 | Oct 2025 | $17.93M | |
| Marshall Solar Energy Project | Juno Beach, FL | Independent Power Producer | 2 | 102.6 GWh | Dec 2025 | - | ||
| Marshall Solar, LLC | Juno Beach, FL | - | - | - | Sep 2025 | $2.00M | ||
| Marshall Wind Energy LLC | De SOTO, IA | Independent Power Producer | - | - | - | Sep 2025 | $2.64M | |
| Marshall Wind Farm, LLC | Edina, MN | Independent Power Producer | 6 | 29.4 GWh | Dec 2024 | - | ||
| Martin County Solar Project, LLC | Houston, TX | Independent Power Producer | 1 | 218.0 GWh | Dec 2025 | Oct 2025 | $2.65M | |
| Martinez Refining Co | Martinez, CA | Industrial | 1 | 806.1 GWh | Dec 2025 | Sep 2025 | $1.83M | |
| Martinsville Onsite Generation, LLC | Columbus, OH | - | - | - | Sep 2025 | $240.52k | ||
| Maryland Environmental Service | Westover, MD | State-Owned Utility | 1 | 12.9 GWh | Dec 2025 | - | ||
| Marysville Hydro Partners | Boise, ID | Independent Power Producer | 1 | 50.7 GWh | Dec 2024 | - | ||
| Mas Durham Power, LLC | Nashville, TN | Independent Power Producer | 1 | 10.8 GWh | Dec 2024 | - | ||
| Mass Solar, LLC | The Woodlands, TX | Independent Power Producer | 4 | 20.3 GWh | Dec 2024 | - | ||
| Massachusetts Bay Trans AUTH | Jamaica Plain, MA | State-Owned Utility | 1 | 479.6 MWh | Dec 2024 | - | ||
| Massachusetts Department Of Correction | Bridgewater, MA | State-Owned Utility | 1 | 1.9 GWh | Dec 2024 | - | ||
| Massachusetts Electric Co | Brooklyn, NY | Investor-Owned Utility | 3 | 3.7 GWh | Dec 2024 | Oct 2025 | $29.93M | $75.60M |
| Massachusetts Inst Of Tech | Cambridge, MA | Commercial | 1 | 223.7 GWh | Dec 2024 | - | ||
| Massachusetts Mun Wholes Electric Co | Ludlow, MA | Political Subdivision | 6 | 85.4 GWh | Dec 2025 | - | ||
| Massachusetts Water Res AUTH | Boston, MA | State-Owned Utility | 3 | 15.2 GWh | Dec 2024 | - | ||
| Massachusetts WTR Rauth-Deer I | Winthrop, MA | Political Subdivision | 1 | 36.5 GWh | Dec 2025 | - | ||
| Masser Farms Realty Ltd | Sacramento, PA | Independent Power Producer | 1 | 1.2 GWh | Dec 2024 | - | ||
| Masspower | Indian Orchard, MA | Independent Power Producer | 1 | 486.5 GWh | Dec 2024 | Sep 2025 | $6.72M | |
| Maston Garden LLC | Kasson, MN | Independent Power Producer | 1 | 1.8 GWh | Dec 2024 | - | ||
| Matador Power Marketing, Inc. | Toronto, ON | - | - | - | Sep 2025 | $162.46k | ||
| Matanuska Electric Assn Inc | Palmer, AK | Cooperative | 1 | 632.3 GWh | Dec 2024 | - | ||
| Matep LLC | Boston, MA | Commercial | 1 | 348.9 GWh | Dec 2024 | Sep 2025 | $8.95M | $5.44M |
| Materials Innovation Recycling Authority | Rocky Hill, CT | Political Subdivision | 1 | 1.2 GWh | Dec 2024 | - | ||
| MAUI Electric Co Ltd | Kahului - MAUI, HI | Investor-Owned Utility | 6 | 870.7 GWh | Dec 2025 | - | ||
| Maven Energy, LLC | Birmingham, AL | - | - | - | Sep 2025 | $16.50k | ||
| Maverick CTY Water Control & Improvement | Eagle Pass, TX | Political Subdivision | 1 | 19.9 GWh | Sep 2025 | - | ||
| Maverick Solar 4, LLC | San Diego, CA | Independent Power Producer | 1 | 280.8 GWh | Dec 2025 | Oct 2025 | $3.96M | |
| Maverick Solar 6, LLC | San Diego, CA | Independent Power Producer | 1 | 271.1 GWh | Dec 2025 | Oct 2025 | $3.61M | |
| Maverick Solar 7, LLC | San Diego, CA | Independent Power Producer | 1 | 369.7 GWh | Dec 2025 | Oct 2025 | $3.10M | |
| Maverick Solar LLC | San Diego, CA | Independent Power Producer | 2 | 388.8 GWh | Dec 2025 | Oct 2025 | $3.87M | |
| Maxsolar | Edison, NJ | Independent Power Producer | 1 | 4.5 GWh | Dec 2024 | - | ||
| May Shannon Solar, LLC | Santa Monica, CA | Independent Power Producer | 1 | 4.2 GWh | Dec 2024 | - | ||
| Mayflower Power & Gas LLC | Birmingham, AL | - | - | - | Sep 2025 | $25.22k | ||
| Mayor And City Council Of Baltimore City | Baltimore, MD | Municipally-Owned Utility | 1 | 635.0 MWh | Dec 2024 | - |
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 | Dec 2025 | Nuclear |
| Barry | Bucks, Alabama | 12 TWh | Jan 1954 | Dec 2025 | Natural Gas : 94.9% Bituminous Coal : 5.1% |
| Beaver Valley | Shippingport, Pennsylvania | 15 TWh | Aug 1976 | Dec 2025 | Nuclear |
| Bowen | Cartersville, Georgia | 12 TWh | Sep 1971 | Dec 2025 | Bituminous Coal : 99.8% |
| Braidwood Generation Station | Braceville, Illinois | 20 TWh | Jun 1988 | Dec 2025 | Nuclear |
| Browns Ferry | Decatur, Alabama | 30 TWh | Jul 1974 | Dec 2025 | Nuclear |
| Brunswick Nuclear | Southport, North Carolina | 16 TWh | Oct 1975 | Dec 2025 | Nuclear |
| Byron Generating Station | Byron, Illinois | 20 TWh | Aug 1985 | Dec 2025 | Nuclear |
| Calvert Cliffs Nuclear Power Plant | Lusby, Maryland | 15 TWh | Apr 1975 | Dec 2025 | Nuclear |
| Catawba | York, South Carolina | 19 TWh | May 1985 | Dec 2025 | Nuclear |
| Comanche Peak | Glen Rose, Texas | 20 TWh | Jul 1990 | Dec 2025 | Nuclear |
| Crystal River | Crystal River, Florida | 15 TWh | Sep 1966 | Dec 2025 | Natural Gas : 74.9% Bituminous Coal : 24.9% |
| Diablo Canyon | Avila Beach, California | 18 TWh | Apr 1985 | Dec 2025 | Nuclear |
| Donald C Cook | Bridgman, Michigan | 18 TWh | Jul 1975 | Dec 2025 | Nuclear |
| Dresden Generating Station | Morris, Illinois | 15 TWh | Jul 1970 | Dec 2025 | Nuclear |
| Edwin I Hatch | Baxley, Georgia | 14 TWh | Nov 1975 | Dec 2025 | Nuclear |
| Gavin Power, LLC | Cheshire, Ohio | 13 TWh | Sep 1974 | Dec 2025 | Bituminous Coal : 99.5% Distillate Fuel Oil : 0.5% |
| Grand Coulee | Grand Coulee, Washington | 16 TWh | Feb 1941 | Dec 2025 | Water |
| Grand Gulf | Port Gibson, Mississippi | 11 TWh | Jun 1985 | Dec 2025 | Nuclear |
| H Allen Franklin Combined Cycle | Smiths, Alabama | 12 TWh | May 2002 | Dec 2025 | Natural Gas |
| Hines Energy Complex | Bartow, Florida | 12 TWh | Mar 1999 | Dec 2025 | Natural Gas |
| Jack McDonough | Smyrna, Georgia | 17 TWh | Apr 1971 | Dec 2025 | Natural Gas |
| James H Miller Jr | Quinton, Alabama | 19 TWh | Sep 1978 | Dec 2025 | Subbituminous Coal : 99.2% Natural Gas : 0.8% |
| Joseph M Farley | Columbia, Alabama | 13 TWh | Nov 1977 | Dec 2025 | Nuclear |
| Labadie | Labadie, Missouri | 17 TWh | May 1970 | Dec 2025 | Subbituminous Coal : 99.9% |
| LaSalle Generating Station | Marseilles, Illinois | 19 TWh | Dec 1983 | Dec 2025 | Nuclear |
| Limerick | Sanatoga, Pennsylvania | 19 TWh | Jan 1986 | Dec 2025 | Nuclear |
| McGuire | Huntersville, North Carolina | 20 TWh | Aug 1981 | Dec 2025 | Nuclear |
| Millstone | Waterford, Connecticut | 17 TWh | Nov 1975 | Dec 2025 | Nuclear |
| Monroe (MI) | Monroe, Michigan | 16 TWh | Oct 1969 | Dec 2025 | Subbituminous Coal : 74.7% Bituminous Coal : 16.0% Petroleum Coke : 9.1% |
| Nine Mile Point Nuclear Station | Lycoming, New York | 16 TWh | Nov 1969 | Dec 2025 | Nuclear |
| North Anna | Mineral, Virginia | 15 TWh | May 1978 | Dec 2025 | Nuclear |
| Oconee | Seneca, South Carolina | 22 TWh | Jun 1973 | Dec 2025 | Nuclear |
| Okeechobee Clean Energy Center | Okeechobee, Florida | 12 TWh | Feb 2019 | Dec 2025 | Natural Gas |
| Palo Verde | Wintersburg, Arizona | 31 TWh | Dec 1985 | Dec 2025 | Nuclear |
| Peach Bottom | Delta, Pennsylvania | 22 TWh | Jun 1974 | Dec 2025 | Nuclear |
| Prairie State Generating Station | Marissa, Illinois | 12 TWh | May 2012 | Dec 2025 | Bituminous Coal : 99.8% |
| PSEG Salem Generating Station | Hancocks Bridge, New Jersey | 19 TWh | May 1971 | Dec 2025 | Nuclear |
| Quad Cities Generating Station | Cordova, Illinois | 15 TWh | Nov 1972 | Dec 2025 | Nuclear |
| Robert Moses Niagara | Lewiston, New York | 14 TWh | Dec 1960 | Dec 2025 | Water |
| Sequoyah | Soddy Daisy, Tennessee | 13 TWh | Jun 1981 | Dec 2025 | Nuclear |
| South Texas Project | Wadsworth, Texas | 22 TWh | Jul 1988 | Dec 2025 | Nuclear |
| St Lucie | Jensen Beach, Florida | 16 TWh | Apr 1976 | Dec 2025 | Nuclear |
| Surry | Surry, Virginia | 13 TWh | Nov 1972 | Dec 2025 | Nuclear |
| TalenEnergy Susquehanna | Berwick, Pennsylvania | 19 TWh | May 1983 | Dec 2025 | Nuclear |
| Turkey Point | Homestead, Florida | 21 TWh | Mar 1967 | Dec 2025 | Nuclear : 68.7% Natural Gas : 31.3% |
| Vogtle | Waynesboro, Georgia | 37 TWh | Apr 1987 | Dec 2025 | Nuclear |
| W A Parish | Thompsons, Texas | 16 TWh | May 1958 | Dec 2025 | Subbituminous Coal : 83.3% Natural Gas : 16.7% |
| Watts Bar Nuclear Plant | Spring City, Tennessee | 16 TWh | Apr 1996 | Dec 2025 | Nuclear |
| West County Energy Center | Loxahatchee, Florida | 19 TWh | Jul 2009 | Dec 2025 | Natural Gas : 99.9% |