Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Matrix Pleasant Valley | Pleasant Valley Solar, LLC | Boise, ID | Idaho Power Company (IPCO) | 389.6 GWh | - | Sep 2025 | Solar |
| Milagro Solar I | Milagro Solar I, LLC | Santa Teresa, NM | El Paso Electric Company (EPE) | 22.0 GWh | - | Sep 2025 | Solar |
| Montgomery Ranch Wind Farm, LLC | Montgomery Ranch Wind Farm, LLC | Crowell, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 463.5 GWh | - | Sep 2025 | Wind |
| Morris Solar | AES Clean Energy | Kirksville, MO | Midcontinent Independent System Operator, Inc. (MISO) | 170.8 GWh | - | Sep 2025 | Solar |
| Moscow | Greenbacker Renewable Energy Corporation | Moscow, ME | ISO New England (ISNE) | 14.5 GWh | - | Sep 2025 | Wind |
| Mill Creek 3 | Southern California Edison Co | Mill Creek, CA | California Independent System Operator (CISO) | 10.6 GWh | Feb 1903 | Dec 2024 | Water |
| Morgan Falls | Georgia Power Co | Dunwoody, GA | Southern Company Services, Inc. - Trans (SOCO) | 31.6 GWh | Nov 1903 | Dec 2024 | Water |
| Madison Dam | NorthWestern Energy (MT Hydro) | Ennis, MT | NorthWestern Corporation (NWMT) | 76.2 GWh | Aug 1906 | Dec 2024 | Water |
| Millville Hydro Station | Eagle Creek Renewable Energy, LLC | Millville, WV | PJM Interconnection, LLC (PJM) | 8.6 GWh | Dec 1912 | Dec 2024 | Water |
| Milton Hydro | SFR Hydro Cor | Milton, NH | ISO New England (ISNE) | 5.6 GWh | Dec 1913 | Dec 2024 | Water |
| Minetto | Erie Boulevard Hydropower LP | Minetto, NY | New York Independent System Operator (NYIS) | 32.6 GWh | Dec 1914 | Dec 2024 | Water |
| Meyers Falls | Hydro Technology Systems Inc | Kettle Falls, WA | Avista Corporation (AVA) | 9.2 GWh | May 1915 | Dec 2024 | Water |
| Mio | Consumers Energy Co - (MI) | Mio, MI | Midcontinent Independent System Operator, Inc. (MISO) | 13.6 GWh | Dec 1915 | Dec 2024 | Water |
| Mosinee Mill | Ahlstrom-Munksjo NA Specialty Solutions, LLC | Mosinee, WI | Midcontinent Independent System Operator, Inc. (MISO) | 117.8 GWh | Jun 1916 | Sep 2025 | Black Liquor : 50.7% Bituminous Coal : 21.8% Water : 13.6% Wood/Wood Waste Solids : 6.1% Natural Gas : 3.7% Residual Fuel Oil : 2.3% Sludge Waste : 1.8% |
| Merrill | Wisconsin Public Service Corp | Merrill, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.3 GWh | Feb 1917 | Dec 2024 | Water |
| Messalonskee 3 | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 6.5 GWh | Dec 1917 | Dec 2024 | Water |
| Moyie Springs | City of Bonners Ferry | Moyie Springs, ID | Bonneville Power Administration (BPAT) | 20.9 GWh | Nov 1921 | Dec 2024 | Water |
| Medway Hydro | Brookfield Black Bear Hydro, LLC | Medway, ME | ISO New England (ISNE) | 23.3 GWh | Dec 1922 | Dec 2024 | Water |
| Mottville | Indiana Michigan Power Co | White Pigeon, MI | PJM Interconnection, LLC (PJM) | 6.9 GWh | Dec 1922 | Dec 2024 | Water |
| Mongaup Falls | Eagle Creek Renewable Energy, LLC | Forestburgh, NY | New York Independent System Operator (NYIS) | 11.9 GWh | Jun 1923 | Nov 2024 | Water |
| Mountain Island | Duke Energy Carolinas, LLC | Mount Holly, NC | Duke Energy Carolinas (DUK) | 131.1 GWh | Nov 1923 | Dec 2024 | Water |
| Menominee Mill Marinette | Eagle Creek Renewable Energy, LLC | Menominee, MI | Midcontinent Independent System Operator, Inc. (MISO) | 11.8 GWh | Dec 1923 | Sep 2025 | Water |
| Messalonskee 2 (Oakland) | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 10.8 GWh | Dec 1923 | Dec 2024 | Water |
| Morrisville | Village of Morrisville - (VT) | Morrisville, VT | ISO New England (ISNE) | 4.9 GWh | Jul 1924 | Dec 2024 | Water |
| Mission | Northbrook Carolina Hydro II, LLC | Murphy, NC | Duke Energy Carolinas (DUK) | 6.3 GWh | Nov 1924 | Dec 2024 | Water |
| Mystic | NorthWestern Energy (MT Hydro) | Fishtail, MT | NorthWestern Corporation (NWMT) | 53.7 GWh | Apr 1925 | Dec 2024 | Water |
| Mormon Flat | Salt River Project | Apache Junction, AZ | Salt River Project Agricultural Improvement and Power District (SRP) | 48.0 GWh | Apr 1926 | Sep 2025 | Water |
| Marshfield 6 | Green Mountain Power Corp | Marshfield, VT | ISO New England (ISNE) | 8.1 GWh | Dec 1926 | Dec 2024 | Water |
| Martin Dam | Alabama Power Co | Dadeville, AL | Southern Company Services, Inc. - Trans (SOCO) | 305.9 GWh | Dec 1926 | Dec 2024 | Water |
| Manitou Springs | City of Colorado Springs - (CO) | Manitou Spring, CO | Western Area Power Administration - Rocky Mountain Region (WACM) | 2.1 GWh | Apr 1927 | Dec 2024 | Water |
| Minidoka | U S Bureau of Reclamation | Rupert, ID | Bonneville Power Administration (BPAT) | 111.7 GWh | May 1927 | Dec 2024 | Water |
| Middlesex 2 | Green Mountain Power Corp | Moretown, VT | ISO New England (ISNE) | 9.8 GWh | Dec 1927 | Dec 2024 | Water |
| Marshall (MI) | City of Marshall - (MI) | Marshall, MI | Midcontinent Independent System Operator, Inc. (MISO) | 704.0 MWh | May 1928 | Dec 2024 | Water |
| Moshier | Erie Boulevard Hydropower LP | Lowville, NY | New York Independent System Operator (NYIS) | 38.1 GWh | Dec 1928 | Dec 2024 | Water |
| Milton | Green Mountain Power Corp | Milton, VT | ISO New England (ISNE) | 44.4 GWh | Jan 1929 | Dec 2024 | Water |
| Morony | NorthWestern Energy (MT Hydro) | Great Falls, MT | NorthWestern Corporation (NWMT) | 255.0 GWh | Dec 1929 | Dec 2024 | Water |
| Merced Falls | Merced Irrigation District | Snelling, CA | California Independent System Operator (CISO) | 9.4 GWh | Jun 1930 | Oct 2024 | Water |
| Mcindoes | Great River Hydro, LLC | Barnet, VT | ISO New England (ISNE) | 53.3 GWh | Dec 1930 | Dec 2024 | Water |
| Merwin | PacifiCorp | Ariel, WA | PacifiCorp West (PACW) | 467.3 GWh | Jun 1931 | Dec 2024 | Water |
| Messalonskee 5 | Messalonskee Stream Hydro LLC | Waterville, ME | ISO New England (ISNE) | 3.3 GWh | Dec 1934 | Dec 2024 | Water |
| Marmet | Appalachian Power Co | Marmet, WV | PJM Interconnection, LLC (PJM) | 67.4 GWh | Nov 1935 | Dec 2024 | Water |
| Monroe (NE) | Loup River Public Power Dist | Monroe, NE | Southwest Power Pool (SWPP) | 25.4 GWh | Dec 1935 | Dec 2024 | Water |
| Manti Upper | City of Manti - (UT) | Manti, UT | PacifiCorp East (PACE) | 464.0 MWh | Dec 1938 | Apr 2024 | Water |
| Macomb | Erie Boulevard Hydropower LP | Malone, NY | New York Independent System Operator (NYIS) | 7.5 GWh | Dec 1939 | Dec 2024 | Water |
| Montezuma | City of Montezuma - (IA) | Montezuma, IA | Midcontinent Independent System Operator, Inc. (MISO) | 119.0 MWh | Jul 1940 | Dec 2024 | Distillate Fuel Oil : 63.8% Natural Gas : 36.2% |
| Marshall Ford | Lower Colorado River Authority | Austin, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 24.0 GWh | Dec 1940 | Dec 2024 | Water |
| Milford Hydro Station | Brookfield Black Bear Hydro, LLC | Milford, ME | ISO New England (ISNE) | 37.2 GWh | Jun 1941 | Dec 2024 | Water |
| McGregor | City of McGregor- (IA) | McGregor, IA | Midcontinent Independent System Operator, Inc. (MISO) | 7.0 MWh | Nov 1941 | Dec 2024 | Distillate Fuel Oil |
| Moline | MidAmerican Energy Co | Moline, IL | Midcontinent Independent System Operator, Inc. (MISO) | 18.6 GWh | Dec 1941 | Dec 2024 | Water : 94.4% Natural Gas : 5.6% |
| Mon Valley Works | United States Steel-Mon Valley | Dravosburg, PA | PJM Interconnection, LLC (PJM) | 430.7 GWh | May 1943 | Dec 2024 | Blast Furnace Gas : 83.2% Other Gas : 16.8% |
| Mill C | New York State Elec & Gas Corp | Town of Plattsburgh, NY | New York Independent System Operator (NYIS) | 28.1 GWh | Jul 1943 | Dec 2024 | Water |
| Melrose | Melrose Public Utilities | Melrose, MN | Midcontinent Independent System Operator, Inc. (MISO) | 49.0 MWh | Jun 1945 | Dec 2024 | Distillate Fuel Oil |
| Main Street (MI) | Village of Sebewaing - (MI) | Sebewaing, MI | Midcontinent Independent System Operator, Inc. (MISO) | 1.0 MWh | May 1947 | Dec 2023 | Distillate Fuel Oil |
| Marshall (MO) | City of Marshall - (MO) | Marshall, MO | Southwest Power Pool (SWPP) | 437.0 MWh | May 1948 | Dec 2024 | Natural Gas : 85.4% Distillate Fuel Oil : 14.6% |
| MSC Croswell | Michigan Sugar Company | Croswell, MI | Midcontinent Independent System Operator, Inc. (MISO) | 35.9 MWh | Sep 1948 | Jan 2025 | Natural Gas |
| Milford | City of Milford - (IA) | Milford, IA | Southwest Power Pool (SWPP) | 283.0 MWh | Dec 1948 | Dec 2024 | Distillate Fuel Oil |
| M L Hibbard | ALLETE, Inc. | Duluth, MN | Midcontinent Independent System Operator, Inc. (MISO) | 95.3 GWh | May 1949 | Sep 2025 | Wood/Wood Waste Solids : 93.3% Subbituminous Coal : 5.9% Natural Gas : 0.8% |
| Mitchell Dam | Alabama Power Co | Verbena, AL | Southern Company Services, Inc. - Trans (SOCO) | 355.5 GWh | Oct 1949 | Dec 2024 | Water |
| Mustang | Oklahoma Gas & Electric Co | Oklahoma City, OK | Southwest Power Pool (SWPP) | 495.4 GWh | Apr 1950 | Sep 2025 | Natural Gas : 99.1% Solar : 0.9% |
| Meade | City of Meade - (KS) | Meade, KS | Southwest Power Pool (SWPP) | 85.0 MWh | Dec 1950 | Dec 2024 | Natural Gas : 77.8% Distillate Fuel Oil : 22.2% |
| Marys Lake | U S Bureau of Reclamation | Estes Park, CO | Western Area Power Administration - Rocky Mountain Region (WACM) | 4.5 GWh | Apr 1951 | Dec 2024 | Water |
| Marble Falls | Lower Colorado River Authority | Marble Falls, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 15.2 GWh | Aug 1951 | Dec 2024 | Water |
| Middle Gorge | Los Angeles Department of Water & Power | Bishop, CA | Los Angeles Department of Water and Power (LDWP) | 90.9 GWh | Apr 1952 | Dec 2024 | Water |
| McManus | Georgia Power Co | Brunswick, GA | Southern Company Services, Inc. - Trans (SOCO) | 3.3 GWh | Oct 1952 | Dec 2024 | Distillate Fuel Oil |
| Moose Lake | Moose Lake Water & Light Comm | Moose Lake, MN | Midcontinent Independent System Operator, Inc. (MISO) | 63.0 MWh | Oct 1952 | Dec 2024 | Distillate Fuel Oil : 83.7% Natural Gas : 16.3% |
| Madison Utilities | City of Madison - (NE) | Madison, NE | Southwest Power Pool (SWPP) | 1.0 MWh | Mar 1953 | Dec 2024 | Distillate Fuel Oil |
| Michigamme Falls | Wisconsin Electric Power Co | Crystal Falls, MI | Midcontinent Independent System Operator, Inc. (MISO) | 23.0 GWh | May 1953 | Dec 2024 | Water |
| McNary | USACE Northwestern Division | Umatilla, OR | Bonneville Power Administration (BPAT) | 3.7 TWh | Nov 1953 | Dec 2024 | Water |
| Montville Station | Montville Power LLC | Uncasville, CT | ISO New England (ISNE) | 27.8 GWh | Dec 1953 | Dec 2024 | Natural Gas : 52.4% Residual Fuel Oil : 46.4% Distillate Fuel Oil : 1.2% |
| Murphys | Utica Water & Power Authority | Murphys, CA | California Independent System Operator (CISO) | 15.5 GWh | Feb 1954 | Dec 2024 | Water |
| Mountain Lake | City of Mountain Lake - (MN) | Mountain Lake, MN | Midcontinent Independent System Operator, Inc. (MISO) | 2.5 GWh | Apr 1954 | Dec 2024 | Wind : 97.7% Natural Gas : 1.8% |
| McWilliams | PowerSouth Energy Cooperative | Gantt, AL | Southern Company Services, Inc. - Trans (SOCO) | 3.5 TWh | Nov 1954 | Sep 2025 | Natural Gas |
| Minneapolis City of | City of Minneapolis - (KS) | Minneapolis, KS | Southwest Power Pool (SWPP) | 99.0 MWh | Mar 1955 | Dec 2024 | Natural Gas : 89.2% Distillate Fuel Oil : 10.8% |
| Manitowoc | Manitowoc Public Utilities | Manitowoc, WI | Midcontinent Independent System Operator, Inc. (MISO) | 179.3 GWh | May 1955 | Sep 2025 | Wood/Wood Waste Solids : 91.2% Petroleum Coke : 4.8% Bituminous Coal : 3.6% |
| Mountain Creek | Mountain Creek Power, LLC | Dallas, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 479.5 GWh | Jan 1956 | Dec 2024 | Natural Gas |
| Motiva Enterprises Port Arthur Refinery | Motiva Enterprises LLC | Port Arthur, TX | Midcontinent Independent System Operator, Inc. (MISO) | 1.6 TWh | May 1957 | Sep 2025 | Natural Gas : 90.8% Other Gas : 9.2% |
| Malden | City of Malden - (MO) | Malden, MO | Southwest Power Pool (SWPP) | 128.0 MWh | Jul 1957 | Dec 2024 | Distillate Fuel Oil |
| Marathon Generating Plant | Florida Keys El Coop Assn, Inc | Marathon, FL | Florida Power & Light Co. (FPL) | 46.1 MWh | Dec 1957 | Dec 2024 | Distillate Fuel Oil |
| Menomonie | Northern States Power Co - Minnesota | Menomonie, WI | Midcontinent Independent System Operator, Inc. (MISO) | 24.5 GWh | Dec 1957 | Dec 2024 | Water |
| Muscatine Plant #1 | Board of Water Electric & Communications | Muscatine, IA | Midcontinent Independent System Operator, Inc. (MISO) | 723.7 GWh | Mar 1958 | Sep 2025 | Subbituminous Coal : 99.7% |
| McMeekin | Dominion Energy South Carolina, Inc | Columbia, SC | Dominion Energy South Carolina, Inc. (SCEG) | 264.6 GWh | Jun 1958 | Aug 2025 | Natural Gas |
| Middletown | Middletown Power LLC | Middletown, CT | ISO New England (ISNE) | 33.0 GWh | Sep 1958 | Dec 2024 | Residual Fuel Oil : 60.6% Natural Gas : 39.3% |
| Mt. Sinai- Morningside | Mt. Sinai- Morningside | New York, NY | New York Independent System Operator (NYIS) | 17.0 MWh | Dec 1959 | Dec 2024 | Distillate Fuel Oil |
| Mammoth Pool | Southern California Edison Co | North Fork, CA | California Independent System Operator (CISO) | 383.3 GWh | Feb 1960 | Sep 2025 | Water |
| Manistique | Cloverland Electric Co-op | Manistique, MI | Midcontinent Independent System Operator, Inc. (MISO) | 1.1 GWh | Jun 1960 | Dec 2024 | Distillate Fuel Oil |
| Miami Fort | Luminant Miami Fort | North Bend, OH | PJM Interconnection, LLC (PJM) | 6.4 TWh | Oct 1960 | Sep 2025 | Bituminous Coal : 99.8% |
| Merrimack | Granite Shore Power | Bow, NH | ISO New England (ISNE) | 363.6 GWh | Nov 1960 | Sep 2025 | Bituminous Coal : 99.7% |
| Middlesex County Utilities Authority | Middlesex County Utilities Authority | Sayreville, NJ | PJM Interconnection, LLC (PJM) | 108.3 GWh | Dec 1960 | Sep 2025 | Landfill Gas |
| MU Combined Heat and Power Plant | Curators of the University of Missouri | Columbia, MO | Midcontinent Independent System Operator, Inc. (MISO) | 196.3 GWh | Jun 1961 | Sep 2025 | Natural Gas : 73.6% Wood/Wood Waste Solids : 23.7% Bituminous Coal : 2.6% |
| Maddox | Southwestern Public Service Co | Hobbs, NM | Southwest Power Pool (SWPP) | 536.7 GWh | Dec 1962 | Sep 2025 | Natural Gas |
| Mayfield | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 576.4 GWh | Feb 1963 | Dec 2024 | Water |
| Marion | Southern Illinois Power Coop | Marion, IL | Midcontinent Independent System Operator, Inc. (MISO) | 761.7 GWh | May 1963 | Sep 2025 | Bituminous Coal : 85.9% Natural Gas : 14.0% |
| Mooreland | Western Farmers Elec Coop, Inc | Mooreland, OK | Southwest Power Pool (SWPP) | 119.8 GWh | Feb 1964 | Dec 2024 | Natural Gas |
| Markham | Grand River Dam Authority | Locust Grove, OK | Southwest Power Pool (SWPP) | 188.2 GWh | Apr 1964 | Dec 2024 | Water |
| Melton Hill | Tennessee Valley Authority | Lenoir City, TN | Tennessee Valley Authority (TVA) | 125.1 GWh | Jun 1964 | Dec 2024 | Water |
| Marshall (NC) | Duke Energy Carolinas, LLC | Terrell, NC | Duke Energy Carolinas (DUK) | 7.8 TWh | Feb 1965 | Sep 2025 | Bituminous Coal : 53.7% Natural Gas : 46.3% |
| Mt Storm | Virginia Electric & Power Co | Mount Storm, WV | PJM Interconnection, LLC (PJM) | 4.8 TWh | Aug 1965 | Sep 2025 | Bituminous Coal : 99.7% |
| Middle Fork | Placer County Water Agency | Foresthill, CA | California Independent System Operator (CISO) | 364.9 GWh | Sep 1966 | Sep 2025 | Water |
| Mead Coated Board | Mead Coated Board Inc | Mahrt, AL | Southern Company Services, Inc. - Trans (SOCO) | 715.8 GWh | Oct 1966 | Sep 2025 | Black Liquor : 38.9% Wood/Wood Waste Solids : 34.1% Natural Gas : 27.0% |
| Markland | Duke Energy Indiana, LLC | Florence, IN | Midcontinent Independent System Operator, Inc. (MISO) | 298.8 GWh | Dec 1966 | Dec 2024 | Water |
Summary of Power Plants By State
Figures are based on September 2025 generation numbers.| State | Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Alabama | # 7 | 76 | 12,052.47 GWh |
| Alaska | # 48 | 147 | 527.57 GWh |
| Arizona | # 9 | 183 | 11,602.92 GWh |
| Arkansas | # 21 | 117 | 5,844.09 GWh |
| California | # 4 | 1,769 | 19,371.91 GWh |
| Colorado | # 30 | 304 | 4,433.17 GWh |
| Connecticut | # 32 | 168 | 3,779.74 GWh |
| Delaware | # 49 | 33 | 419.31 GWh |
| District of Columbia | # 51 | 16 | 16.99 GWh |
| Florida | # 2 | 323 | 24,446.09 GWh |
| Georgia | # 8 | 266 | 11,628.97 GWh |
| Hawaii | # 47 | 73 | 826.54 GWh |
| Idaho | # 44 | 148 | 1,495.33 GWh |
| Illinois | # 5 | 385 | 14,642.93 GWh |
| Indiana | # 14 | 213 | 8,730.35 GWh |
| Iowa | # 26 | 295 | 5,224.35 GWh |
| Kansas | # 25 | 189 | 5,250.86 GWh |
| Kentucky | # 23 | 60 | 5,806.86 GWh |
| Louisiana | # 13 | 87 | 9,343.34 GWh |
| Maine | # 45 | 217 | 1,135.36 GWh |
| Maryland | # 39 | 204 | 2,935.42 GWh |
| Massachusetts | # 41 | 652 | 1,746.92 GWh |
| Michigan | # 11 | 279 | 10,468.02 GWh |
| Minnesota | # 29 | 769 | 4,717.95 GWh |
| Mississippi | # 20 | 58 | 6,625.37 GWh |
| Missouri | # 22 | 128 | 5,843.17 GWh |
| State | Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Montana | # 40 | 72 | 1,949.24 GWh |
| Nebraska | # 34 | 132 | 3,501.38 GWh |
| Nevada | # 31 | 114 | 4,053.88 GWh |
| New Hampshire | # 42 | 60 | 1,549.07 GWh |
| New Jersey | # 27 | 399 | 4,969.45 GWh |
| New Mexico | # 36 | 145 | 3,317.84 GWh |
| New York | # 12 | 966 | 10,145.62 GWh |
| North Carolina | # 10 | 917 | 11,211.15 GWh |
| North Dakota | # 37 | 60 | 3,089.17 GWh |
| Ohio | # 6 | 201 | 12,818.31 GWh |
| Oklahoma | # 17 | 143 | 7,364.05 GWh |
| Oregon | # 28 | 282 | 4,812.51 GWh |
| Pennsylvania | # 3 | 260 | 19,731.43 GWh |
| Rhode Island | # 46 | 100 | 863.62 GWh |
| South Carolina | # 16 | 207 | 7,861.23 GWh |
| South Dakota | # 43 | 52 | 1,535.17 GWh |
| Tennessee | # 19 | 88 | 6,829.06 GWh |
| Texas | # 1 | 946 | 51,969.48 GWh |
| Utah | # 35 | 126 | 3,419.48 GWh |
| Vermont | # 50 | 120 | 165.14 GWh |
| Virginia | # 15 | 241 | 8,580.52 GWh |
| Washington | # 18 | 138 | 7,120.43 GWh |
| West Virginia | # 38 | 39 | 3,057.29 GWh |
| Wisconsin | # 24 | 251 | 5,674.74 GWh |
| Wyoming | # 33 | 73 | 3,641.70 GWh |