Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Stony Brook | Massachusetts Mun Wholes Electric Co | Ludlow, MA | ISO New England (ISNE) | 164.1 GWh | Oct 1981 | May 2026 | Distillate Fuel Oil : 61.3% Natural Gas : 38.7% |
| SELCO Community Solar | Massachusetts Mun Wholes Electric Co | Shrewsbury, MA | ISO New England (ISNE) | 4.6 GWh | May 2018 | Dec 2025 | Solar |
| Berkshire Wind Power Project | Massachusetts Mun Wholes Electric Co | Lanesboro, MA | ISO New England (ISNE) | 31.9 GWh | Apr 2011 | May 2026 | Wind |
| Mass Inst Tech Cntrl Utilities/Cogen Plt | Massachusetts Inst of Tech | Cambridge, MA | ISO New England (ISNE) | 209.4 GWh | May 1995 | Dec 2025 | Natural Gas |
| Dorchester Solar Site | Massachusetts Electric Co | Dorchester, MA | ISO New England (ISNE) | 1.6 GWh | Dec 2011 | Dec 2025 | Solar |
| NEDC Solar Site | Massachusetts Electric Co | Whitinsville, MA | ISO New England (ISNE) | 953.0 MWh | May 2010 | Dec 2025 | Solar |
| Haverhill Solar Power Project | Massachusetts Electric Co | Haverhill, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2010 | Dec 2025 | Solar |
| Bridgewater Complex Co-Generation Plant | Massachusetts Department of Correction | Bridgewater, MA | ISO New England (ISNE) | 1.2 GWh | Oct 2015 | Dec 2025 | Natural Gas |
| M Street Jet | Massachusetts Bay Trans Auth | Boston, MA | ISO New England (ISNE) | 294.0 MWh | Apr 1979 | Dec 2025 | Kerosene |
| Freetown Solar | Mass Solar, LLC | Freetown, MA | ISO New England (ISNE) | 6.4 GWh | Feb 2015 | Dec 2025 | Solar |
| Dartmouth | Mass Solar, LLC | Dartmouth, MA | ISO New England (ISNE) | 6.4 GWh | Mar 2014 | Dec 2025 | Solar |
| Braley Road 2 | Mass Solar, LLC | Freetown, MA | ISO New England (ISNE) | 3.9 GWh | Feb 2015 | Dec 2025 | Solar |
| North Brookfield | Mass Solar, LLC | North Brookfield, MA | ISO New England (ISNE) | 4.0 GWh | May 2014 | Dec 2025 | Solar |
| Mas Durham Power, LLC | Mas Durham Power, LLC | Durham, NC | Duke Energy Carolinas (DUK) | 10.2 GWh | Jan 2010 | Dec 2024 | Landfill Gas |
| Falls River Hydro | Marysville Hydro Partners | Ashton, ID | Bonneville Power Administration (BPAT) | 43.2 GWh | Jul 1993 | Dec 2025 | Water |
| Eastern Correctional Institute | Maryland Environmental Service | Westover, MD | PJM Interconnection, LLC (PJM) | 13.8 GWh | Jul 1987 | May 2026 | Natural Gas : 99.0% Distillate Fuel Oil : 1.0% |
| Martinez Refining | Martinez Refining Co | Martinez, CA | California Independent System Operator (CISO) | 668.8 GWh | Oct 1995 | May 2026 | Natural Gas : 96.6% Other Gas : 3.4% |
| Martin County Solar Project, LLC | Martin County Solar Project, LLC | Pilgrim, KY | PJM Interconnection, LLC (PJM) | 223.1 GWh | Nov 2024 | May 2026 | Solar |
| Marshall Wind 6 LLC | Marshall Wind Farm, LLC | Marshall, MN | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 5 LLC | Marshall Wind Farm, LLC | Marshall, MN | Midcontinent Independent System Operator, Inc. (MISO) | 2.0 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 4 LLC | Marshall Wind Farm, LLC | Marshall, MN | Midcontinent Independent System Operator, Inc. (MISO) | 3.9 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 3 LLC | Marshall Wind Farm, LLC | Marshall, MN | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 1 LLC | Marshall Wind Farm, LLC | Marshall, MN | Midcontinent Independent System Operator, Inc. (MISO) | 1.2 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 2 LLC | Marshall Wind Farm, LLC | Marshall, MN | Midcontinent Independent System Operator, Inc. (MISO) | 5.3 GWh | Nov 2007 | Nov 2025 | Wind |
| Marshall Solar Energy Project | Marshall Solar Energy Project | Marshall, MN | Midcontinent Independent System Operator, Inc. (MISO) | 92.5 GWh | Dec 2016 | May 2026 | Solar |
| Marshall Solar | Marshall Solar | Hartsville, SC | Duke Energy Progress East (CPLE) | 2.2 GWh | Jun 2022 | Dec 2025 | Solar |
| Marsh Valley Development | Marsh Valley Development Inc | McCammon, ID | PacifiCorp East (PACE) | 3.5 GWh | Mar 1993 | Dec 2025 | Water |
| Marsh Landing Generating Station | Marsh Landing LLC | Antioch, CA | California Independent System Operator (CISO) | 18.3 GWh | Apr 2013 | May 2026 | Natural Gas |
| Mars Wrigley Confectionery US, LLC | Mars Wrigley Confectionery US, LLC | Hackettstown, NJ | PJM Interconnection, LLC (PJM) | 55.2 GWh | Sep 1984 | Dec 2025 | Natural Gas |
| ME - Novel (Lighthouse Ph I) Mars Hill | Mars Hill Road Solar Farm, LLC | Westfield, ME | ISO New England (ISNE) | 4.1 GWh | Jul 2024 | Dec 2025 | Solar |
| OR - Green Key - Marquam | Marquam Creek Solar, LLC | Molalla, OR | Portland General Electric Company (PGE) | 3.3 GWh | Nov 2024 | Oct 2025 | Solar |
| Marlow Solar, LLC CSG | Marlow Solar, LLC | Bluford, IL | Midcontinent Independent System Operator, Inc. (MISO) | 4.3 GWh | Nov 2020 | Dec 2025 | Solar |
| Marlborough Solar | Marlborough Solar, LLC | Milton, NY | ISO New England (ISNE) | 3.2 GWh | Feb 2021 | Dec 2025 | Solar |
| Marlboro Mushrooms Solar Field | Marlboro Mushroom | West Grove, PA | PJM Interconnection, LLC (PJM) | 1.3 GWh | Oct 2011 | Dec 2025 | Solar |
| Markum Solar Farm | Markum Solar Farm, LLC | Valley Mills, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 367.0 GWh | Oct 2024 | May 2026 | Solar |
| Whirlpool Corporation - Marion Wind Farm | Marion Wind 23, LLC | Marion, OH | PJM Interconnection, LLC (PJM) | 5.7 GWh | Sep 2017 | Dec 2024 | Wind |
| Marion Solar LNG | Marion Solar LLC | Indianapolis, IN | Midcontinent Independent System Operator, Inc. (MISO) | 1.8 GWh | Sep 2015 | Dec 2025 | Solar |
| Belmont | Marion Solar LLC | Indianapolis, IN | Midcontinent Independent System Operator, Inc. (MISO) | 5.2 GWh | Oct 2015 | Dec 2025 | Solar |
| Marion County Solar Project | Marion County Solar Project, LLC | Marion, OH | PJM Interconnection, LLC (PJM) | 50.2 GWh | - | May 2026 | Solar |
| Freeze Solar | Marina Energy LLC | Dayton, NJ | PJM Interconnection, LLC (PJM) | 2.0 GWh | Nov 2013 | Dec 2025 | Solar |
| Heller 400M | Marina Energy LLC | Edison Township, NJ | PJM Interconnection, LLC (PJM) | 1.4 GWh | Apr 2013 | Dec 2025 | Solar |
| Heller Industrial Parks | Marina Energy LLC | Dayton, NJ | PJM Interconnection, LLC (PJM) | 7.5 GWh | Nov 2011 | Dec 2025 | Solar |
| Syncarpha Freetown | Marie's Way Solar I, LLC | Freetown, MA | ISO New England (ISNE) | 6.4 GWh | Oct 2016 | Dec 2025 | Solar |
| Marcus Hook Energy LP | Marcus Hook Energy LP | Marcus Hook, PA | PJM Interconnection, LLC (PJM) | 5.9 TWh | Nov 2004 | May 2026 | Natural Gas |
| Marco Ranch | Marco Power Inc | Jerome, ID | Idaho Power Company (IPCO) | 2.5 GWh | Jul 1985 | Oct 2025 | Water |
| DC Water Solar | Marbury Point Solar LLC | Washington, DC | PJM Interconnection, LLC (PJM) | 4.8 GWh | Apr 2021 | Dec 2025 | Solar |
| Marble River Wind Farm | Marble River, LLC | Churubusco, NY | New York Independent System Operator (NYIS) | 470.7 GWh | Oct 2012 | May 2026 | Wind |
| Mapleton Community Solar | Mapleton Community Solar | Mapleton, MN | Midcontinent Independent System Operator, Inc. (MISO) | 5.2 GWh | May 2017 | Dec 2025 | Solar |
| Maple(CSG) | Maple Street Solar 1, LLC | Bellingham, MA | ISO New England (ISNE) | 6.7 GWh | Oct 2021 | Dec 2024 | Solar |
| Manville Hill Road Solar | Manville Hill Road Solar LLC | Cumberland, RI | ISO New England (ISNE) | 6.7 GWh | Apr 2021 | Dec 2025 | Solar |
| Mantisi | Mantisi Solar LLC | Brockport, NY | New York Independent System Operator (NYIS) | 9.4 GWh | Feb 2024 | Dec 2025 | Solar |
| Custer Energy Center | Manitowoc Public Utilities | Manitowoc, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.1 GWh | May 1999 | Dec 2025 | Natural Gas |
| Manitowoc | Manitowoc Public Utilities | Manitowoc, WI | Midcontinent Independent System Operator, Inc. (MISO) | 178.4 GWh | May 1955 | May 2026 | Wood/Wood Waste Solids : 88.2% Petroleum Coke : 6.6% Bituminous Coal : 4.9% |
| Manchester Street | Manchester Street, LLC. | Providence, RI | ISO New England (ISNE) | 2.1 TWh | Aug 1995 | May 2026 | Natural Gas : 92.2% Distillate Fuel Oil : 7.8% |
| Mammoth Plains | Mammoth Plains Wind Project | Oakwood, OK | Southwest Power Pool (SWPP) | 623.0 GWh | Nov 2014 | Dec 2025 | Wind |
| Mammoth North Solar | Mammoth North, LLC | Knox, IN | PJM Interconnection, LLC (PJM) | 754.5 GWh | Oct 2024 | May 2026 | Solar |
| Muck Valley Hydroelectric | Malacha Hydro Limited Partnership | NA, CA | California Independent System Operator (CISO) | 89.8 GWh | Nov 1988 | Dec 2025 | Water |
| Major Oak Power | Major Oak Power, LLC | Bremond, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 2.3 TWh | Aug 1990 | May 2026 | Lignite Coal : 99.9% |
| MMWAC Resource Recovery Facility | Maine Waste to Energy | Auburn, ME | ISO New England (ISNE) | 7.8 GWh | May 1992 | May 2026 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.8% |
| Pittsfield Solar (N. Main St) | Maine DG Solar Pittsfield, LLC | Pittsfield, ME | ISO New England (ISNE) | 8.3 GWh | Sep 2023 | Dec 2025 | Solar |
| Monmouth | Maine DG Solar Monmouth, LLC | Monmouth, ME | ISO New England (ISNE) | 9.5 GWh | Feb 2022 | Dec 2025 | Solar |
| Harmony Solar (ME) | Maine DG Solar Harmony, LLC | Harmony, ME | ISO New England (ISNE) | 9.0 GWh | Jul 2022 | Dec 2025 | Solar |
| Baldwin (ME) | Maine DG Solar Baldwin, LLC | West Baldwin, ME | ISO New England (ISNE) | 9.6 GWh | Feb 2022 | Dec 2025 | Solar |
| Augusta | Maine DG Solar Augusta, LLC | Augusta, ME | ISO New England (ISNE) | 4.8 GWh | Feb 2022 | Dec 2025 | Solar |
| Maimonides Medical Center | Maimonides Medical Center | Brooklyn, NY | New York Independent System Operator (NYIS) | 15.0 MWh | Dec 1989 | Dec 2025 | Distillate Fuel Oil |
| Biomass to Energy Facility, Kauai | Mahipapa LLC | Koloa, HI | 28.6 GWh | Apr 2014 | Dec 2025 | Agricultural By-Products | |
| Magruder Solar Community Solar | Magruder Solar, LLC | Shawangunk, NY | New York Independent System Operator (NYIS) | 335.0 MWh | Nov 2025 | Dec 2025 | Solar |
| Magnolia Power | Magnolia Power Holdings LLC | Plaquemine, LA | Midcontinent Independent System Operator, Inc. (MISO) | 1.9 TWh | Nov 2025 | May 2026 | Natural Gas |
| Magdaline Solar, LLC | Magdaline Solar, LLC | Lynchburg, SC | Duke Energy Progress East (CPLE) | 3.8 GWh | Aug 2023 | Dec 2025 | Solar |
| Madison Windpower LLC | Madison Windpower LLC | Madison, NY | New York Independent System Operator (NYIS) | 543.0 MWh | Sep 2000 | Sep 2025 | Wind |
| West Campus Cogeneration Facility | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 305.2 GWh | Mar 2005 | Dec 2025 | Natural Gas |
| Wind Turbine | Madison Gas & Electric Co | Casco, WI | Midcontinent Independent System Operator, Inc. (MISO) | 12.0 GWh | May 1999 | Dec 2025 | Wind |
| West Marinette 34 | Madison Gas & Electric Co | Peshtigo, WI | Midcontinent Independent System Operator, Inc. (MISO) | 84.9 GWh | May 2000 | Dec 2025 | Natural Gas |
| Nine Springs | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 89.0 MWh | Nov 1964 | Dec 2025 | Natural Gas |
| Saratoga Wind Farm | Madison Gas & Electric Co | Lime Springs, IA | Midcontinent Independent System Operator, Inc. (MISO) | 259.8 GWh | Jan 2019 | May 2026 | Wind |
| Strix Solar | Madison Gas & Electric Co | Fitchburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 9.3 GWh | Dec 2024 | Dec 2025 | Solar |
| Middleton Airport Solar | Madison Gas & Electric Co | Middleton, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.4 GWh | Jun 2020 | Dec 2025 | Solar |
| Tyto Solar | Madison Gas & Electric Co | Fitchburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 11.3 GWh | Jan 2024 | Dec 2025 | Solar |
| Sycamore (WI) | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 28.0 MWh | Nov 1967 | Dec 2025 | Natural Gas |
| Blount Street | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 58.6 GWh | May 1957 | Dec 2025 | Natural Gas |
| Hermsdorf Solar | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 16.4 GWh | Feb 2022 | Dec 2025 | Solar |
| O'Brien Solar Fields | Madison Gas & Electric Co | Fitchburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 37.4 GWh | Apr 2021 | Dec 2025 | Solar |
| Dane County Airport Solar | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 17.4 GWh | Nov 2020 | Dec 2025 | Solar |
| Diesel Generators | Madison Gas & Electric Co | Madison, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.3 GWh | May 2001 | May 2026 | Distillate Fuel Oil |
| Top of Iowa Windfarm III | Madison Gas & Electric Co | Kensett, IA | Midcontinent Independent System Operator, Inc. (MISO) | 39.9 GWh | Jan 2008 | Dec 2025 | Wind |
| Madison Fields Solar Project, LLC | Madison Fields Solar Project, LLC | Irwin, OH | PJM Interconnection, LLC (PJM) | 403.2 GWh | Dec 2023 | May 2026 | Solar |
| North Kern 3 | Madison Energy Investments LLC | Bakersfield, CA | California Independent System Operator (CISO) | 13.6 GWh | Nov 2023 | Dec 2025 | Solar |
| North Kern 1 | Madison Energy Investments LLC | Shafter, CA | California Independent System Operator (CISO) | 6.9 GWh | May 2023 | Dec 2025 | Solar |
| North Kern 2 | Madison Energy Investments LLC | City of Shafter, CA | California Independent System Operator (CISO) | 6.1 GWh | Jun 2024 | Dec 2025 | Solar |
| 20 Bedford | Madison Energy Investments LLC | Bridgewater, MA | ISO New England (ISNE) | 146.0 MWh | Nov 2024 | Dec 2025 | Solar |
| SP-231 Clifton | Madison Energy Investments LLC | Clifton, ME | ISO New England (ISNE) | 5.4 GWh | Nov 2024 | Dec 2025 | Solar |
| 376 Nash | Madison Energy Investments LLC | New Bedford, MA | ISO New England (ISNE) | 17.0 MWh | Nov 2024 | Dec 2025 | Solar |
| Green Acres (VA) | Madison Energy Investments LLC | Bassett, VA | PJM Interconnection, LLC (PJM) | 9.6 GWh | Nov 2024 | Dec 2025 | Solar |
| Fairview Farms | Madison Energy Investments LLC | Bel Air, MD | PJM Interconnection, LLC (PJM) | 37.5 GWh | Nov 2024 | May 2026 | Solar |
| Lime Bluff 2 | Madison Energy Investments LLC | Hughesville, PA | PJM Interconnection, LLC (PJM) | 465.0 MWh | Jul 2025 | Dec 2025 | Solar |
| Claggett Landing | Madison Energy Investments LLC | Upper Malboro, MD | PJM Interconnection, LLC (PJM) | 2.9 GWh | Oct 2024 | Dec 2025 | Solar |
| 3100 Valleyview Drive | Madison Energy Investments LLC | Columbus, OH | PJM Interconnection, LLC (PJM) | 916.0 MWh | Jul 2023 | Dec 2025 | Solar |
| Maumee Solar | Madison Energy Investments LLC | Maumee, OH | PJM Interconnection, LLC (PJM) | 1.9 GWh | Oct 2024 | Dec 2025 | Solar |
| Wheeler Ridge 2 | Madison Energy Investments LLC | Arvin, CA | California Independent System Operator (CISO) | 13.8 GWh | Oct 2023 | Dec 2025 | Solar |
| 0 Middle | Madison Energy Investments LLC | Chatham, MA | ISO New England (ISNE) | 3.4 GWh | Aug 2022 | Dec 2025 | Solar |
Summary of Power Plants By State
Figures are based on May 2026 generation numbers.| State | Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Alabama | # 8 | 77 | 11,823.92 GWh |
| Alaska | # 48 | 140 | 513.29 GWh |
| Arizona | # 14 | 196 | 9,091.99 GWh |
| Arkansas | # 25 | 117 | 4,873.33 GWh |
| California | # 4 | 1,740 | 15,360.54 GWh |
| Colorado | # 31 | 308 | 4,156.36 GWh |
| Connecticut | # 35 | 173 | 3,391.33 GWh |
| Delaware | # 49 | 35 | 236.45 GWh |
| District of Columbia | # 51 | 17 | 14.46 GWh |
| Florida | # 2 | 342 | 25,093.89 GWh |
| Georgia | # 6 | 250 | 12,138.02 GWh |
| Hawaii | # 46 | 70 | 762.50 GWh |
| Idaho | # 41 | 151 | 1,963.84 GWh |
| Illinois | # 5 | 494 | 14,816.74 GWh |
| Indiana | # 15 | 222 | 7,662.28 GWh |
| Iowa | # 21 | 297 | 5,720.38 GWh |
| Kansas | # 24 | 188 | 5,118.39 GWh |
| Kentucky | # 23 | 61 | 5,471.28 GWh |
| Louisiana | # 13 | 90 | 9,131.60 GWh |
| Maine | # 44 | 242 | 1,130.78 GWh |
| Maryland | # 37 | 228 | 3,103.37 GWh |
| Massachusetts | # 45 | 666 | 1,073.93 GWh |
| Michigan | # 11 | 276 | 9,774.25 GWh |
| Minnesota | # 28 | 790 | 4,567.82 GWh |
| Mississippi | # 20 | 60 | 6,404.61 GWh |
| Missouri | # 22 | 129 | 5,701.36 GWh |
| State | Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Montana | # 40 | 71 | 2,053.07 GWh |
| Nebraska | # 36 | 126 | 3,193.89 GWh |
| Nevada | # 33 | 117 | 3,848.29 GWh |
| New Hampshire | # 43 | 57 | 1,198.65 GWh |
| New Jersey | # 30 | 398 | 4,274.91 GWh |
| New Mexico | # 29 | 158 | 4,513.39 GWh |
| New York | # 10 | 1,064 | 10,643.78 GWh |
| North Carolina | # 9 | 913 | 11,481.42 GWh |
| North Dakota | # 34 | 59 | 3,601.34 GWh |
| Ohio | # 7 | 211 | 11,886.21 GWh |
| Oklahoma | # 17 | 144 | 7,547.66 GWh |
| Oregon | # 27 | 281 | 4,575.23 GWh |
| Pennsylvania | # 3 | 258 | 18,234.28 GWh |
| Rhode Island | # 47 | 107 | 580.94 GWh |
| South Carolina | # 16 | 209 | 7,632.32 GWh |
| South Dakota | # 42 | 53 | 1,802.78 GWh |
| Tennessee | # 19 | 99 | 6,454.94 GWh |
| Texas | # 1 | 1,019 | 50,690.02 GWh |
| Utah | # 39 | 128 | 2,809.26 GWh |
| Vermont | # 50 | 118 | 186.37 GWh |
| Virginia | # 18 | 250 | 7,445.56 GWh |
| Washington | # 12 | 134 | 9,231.20 GWh |
| West Virginia | # 32 | 41 | 4,142.41 GWh |
| Wisconsin | # 26 | 266 | 4,582.07 GWh |
| Wyoming | # 38 | 69 | 2,983.81 GWh |