Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Colchester 16 | Green Mountain Power Corp | Colchester, VT | ISO New England (ISNE) | 310.0 MWh | Sep 1965 | Dec 2025 | Distillate Fuel Oil |
| Essex Junction 19 | Green Mountain Power Corp | Essex Junction, VT | ISO New England (ISNE) | 35.0 GWh | Dec 1916 | Jun 2026 | Water : 99.0% Distillate Fuel Oil : 1.0% |
| Marshfield 6 | Green Mountain Power Corp | Marshfield, VT | ISO New England (ISNE) | 3.9 GWh | Dec 1926 | Dec 2025 | Water |
| West Danville 15 | Green Mountain Power Corp | Danville, VT | ISO New England (ISNE) | 2.2 GWh | Dec 1916 | Dec 2025 | Water |
| Morrisville | Village of Morrisville - (VT) | Morrisville, VT | ISO New England (ISNE) | 5.0 GWh | Jul 1924 | Dec 2025 | Water |
| Great Falls (VT) | The Town of Lyndon Elec Dept - (VT) | Lyndon, VT | ISO New England (ISNE) | 1.9 GWh | Jul 1915 | Dec 2025 | Water |
| Burlington GT | City of Burlington Electric - (VT) | Burlington, VT | ISO New England (ISNE) | 684.0 MWh | Aug 1971 | Dec 2025 | Distillate Fuel Oil |
| Fairfax Falls | Green Mountain Power Corp | Fairfax, VT | ISO New England (ISNE) | 16.1 GWh | Jan 1919 | Dec 2025 | Water |
| West Charleston | Barton Village, Inc | West Charleston, VT | ISO New England (ISNE) | 5.8 GWh | Jun 1931 | Jul 2025 | Water |
| Harriman | Great River Hydro, LLC | Whitingham, VT | ISO New England (ISNE) | 98.2 GWh | Apr 1924 | Dec 2025 | Water |
| Middlesex 2 | Green Mountain Power Corp | Moretown, VT | ISO New England (ISNE) | 5.9 GWh | Dec 1927 | Dec 2025 | Water |
| Bellows Falls | Great River Hydro, LLC | Bellow Falls, VT | ISO New England (ISNE) | 194.3 GWh | Feb 1928 | Dec 2025 | Water |
| Canaan | Central Rivers Power NH, LLC | Canaan, VT | ISO New England (ISNE) | 6.3 GWh | Jul 1927 | Dec 2025 | Water |
| Waterside Power, LLC | Waterside Power, LLC | Stamford, CT | ISO New England (ISNE) | 2.0 GWh | May 2003 | Dec 2025 | Distillate Fuel Oil |
| Fitchburg Gas Recovery | WM Renewable Energy LLC | Westminster, MA | ISO New England (ISNE) | 31.7 GWh | Sep 2007 | Dec 2025 | Landfill Gas |
| Waterbury Generation | Engie North America | Waterbury, CT | ISO New England (ISNE) | 55.0 GWh | May 2009 | Dec 2025 | Natural Gas : 99.1% Kerosene : 0.9% |
| Newington Energy Center | Essential Power Operating Services, LLC | Newington, NH | ISO New England (ISNE) | 2.1 TWh | Sep 2002 | Jun 2026 | Natural Gas : 92.9% Distillate Fuel Oil : 7.1% |
| Quinebaug Lower Project | Quinebaug Associates LLC | Brooklyn, CT | ISO New England (ISNE) | 5.4 GWh | Mar 1990 | Dec 2025 | Water |
| CPV Towantic Energy Center | CPV Towantic, LLC | Oxford, CT | ISO New England (ISNE) | 5.6 TWh | Apr 2018 | Jun 2026 | Natural Gas |
| Lempster Wind LLC | Avangrid Power LLC | Lempster, NH | ISO New England (ISNE) | 61.1 GWh | Nov 2008 | Jun 2026 | Wind |
| Ameresco Chicopee Energy | AMERESCO Chicopee Energy LLC | Chicopee, MA | ISO New England (ISNE) | 3.7 GWh | Jan 2004 | Dec 2025 | Landfill Gas |
| Wallingford Energy | Wallingford Energy LLC | Wallingford, CT | ISO New England (ISNE) | 107.0 GWh | Jul 2001 | Dec 2025 | Natural Gas |
| Fore River Generating Station | Calpine Fore River Energy Center, LLC | North Weymouth, MA | ISO New England (ISNE) | 2.7 TWh | Jul 2003 | Jun 2026 | Natural Gas : 92.4% Distillate Fuel Oil : 7.6% |
| Medway Hydro | Brookfield Black Bear Hydro, LLC | Medway, ME | ISO New England (ISNE) | 22.9 GWh | Dec 1922 | Dec 2025 | Water |
| Westbrook Energy Center Power Plant | Westbrook Energy Center | Westbrook, ME | ISO New England (ISNE) | 3.5 TWh | Apr 2001 | Jun 2026 | Natural Gas |
| Granite Ridge | Granite Ridge Energy LLC | Londonderry, NH | ISO New England (ISNE) | 3.8 TWh | Feb 2003 | Jun 2026 | Natural Gas |
| Lake Road Generating Plant | Lake Road Generating Co LP | Dayville, CT | ISO New England (ISNE) | 5.9 TWh | Feb 2002 | Jun 2026 | Natural Gas |
| Milford Power Project | Milford Power Co LLC | Milford, CT | ISO New England (ISNE) | 3.3 TWh | Jan 2004 | Jun 2026 | Natural Gas |
| ANP Bellingham Energy Project | Bellingham Power Generation LLC | Bellingham, MA | ISO New England (ISNE) | 2.9 TWh | Oct 2002 | Jun 2026 | Natural Gas |
| ANP Blackstone Energy Project | ANP Blackstone Energy Company LLC | Blackstone, MA | ISO New England (ISNE) | 2.8 TWh | May 2001 | Jun 2026 | Natural Gas |
| Rhode Island State Energy Center | RISEC Operating Services | Johnston, RI | ISO New England (ISNE) | 3.1 TWh | Sep 2002 | Jun 2026 | Natural Gas |
| Rumford Power LLC | Rumford Power | Rumford, ME | ISO New England (ISNE) | 792.6 GWh | Jun 2000 | Dec 2025 | Natural Gas |
| MM Taunton Energy | MM Taunton Energy LLC | Taunton, MA | ISO New England (ISNE) | 6.9 GWh | Aug 1997 | Dec 2025 | Landfill Gas |
| Millennium Power | Millennium Power Company, LLC | Charlton, MA | ISO New England (ISNE) | 948.2 GWh | Mar 2001 | Jun 2026 | Natural Gas |
| Maine Independence Station | Casco Bay Energy Co LLC | Veazie, ME | ISO New England (ISNE) | 1.4 TWh | Apr 2000 | Dec 2025 | Natural Gas |
| 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 |
| Tiverton Power Plant | Tiverton Power LLC | Tiverton, RI | ISO New England (ISNE) | 1.5 TWh | Feb 2000 | Dec 2025 | Natural Gas |
| Bridgeport Energy Project | Bridgeport Energy LLC | Bridgeport, CT | ISO New England (ISNE) | 2.7 TWh | May 1998 | Jun 2026 | Natural Gas |
| Berkshire Power | Berkshire Power Co LLC | Agawam, MA | ISO New England (ISNE) | 809.5 GWh | Aug 1999 | Dec 2025 | Natural Gas |
| Wellesley College Central Utility Plant | Wellesley College | Wellesley, MA | ISO New England (ISNE) | 9.6 GWh | May 1985 | Dec 2025 | Natural Gas |
| Dighton Power Plant | Dighton Power, LLC | Dighton, MA | ISO New England (ISNE) | 275.5 GWh | Apr 1999 | Dec 2025 | Natural Gas |
| Nashua Plant | NextEra Renewable Fuels, LLC | Nashua, NH | ISO New England (ISNE) | 13.1 GWh | Mar 1996 | Dec 2025 | Landfill Gas |
| Berlin Gorham | Great Lakes Hydro America LLC | Berlin, NH | ISO New England (ISNE) | 101.1 GWh | Dec 1913 | Dec 2025 | Water |
| EHC West Hopkinton | Green Mountain Power Corp | West Hopkinton, NH | ISO New England (ISNE) | 1.2 GWh | Jun 1985 | Dec 2025 | Water |
| Pejepscot Hydroelectric Project | Topsham Hydro Partners | Topsham, ME | ISO New England (ISNE) | 49.7 GWh | Oct 1987 | Dec 2025 | Water |
| Dartmouth College Heating Plant | Dartmouth College | Hanover, NH | ISO New England (ISNE) | 10.5 GWh | Dec 1969 | Jun 2026 | Residual Fuel Oil |
| Rollinsford | Green Mountain Power Corp | Rollinsford, NH | ISO New England (ISNE) | 3.0 GWh | Sep 1986 | Dec 2025 | Water |
| Turnkey Landfill Gas Recovery | WM Renewable Energy LLC | Rochester, NH | ISO New England (ISNE) | 38.5 GWh | Jan 1992 | Dec 2025 | Landfill Gas |
| Hartford Hospital Cogeneration | Cartier Energy, LLC | Hartford, CT | ISO New England (ISNE) | 39.5 GWh | Jun 1988 | Dec 2024 | Natural Gas |
| Wheelabrator Concord Facility | Wheelabrator Environmental Systems | Concord, NH | ISO New England (ISNE) | 93.0 GWh | Mar 1989 | Jun 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Wheelabrator North Andover | Wheelabrator Environmental Systems | North Andover, MA | ISO New England (ISNE) | 241.9 GWh | Apr 1985 | Jun 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Dartmouth Power Associates LP | Dartmouth Energy Center | Dartmouth, MA | ISO New England (ISNE) | 88.9 GWh | Feb 1992 | Dec 2025 | Natural Gas : 96.7% Distillate Fuel Oil : 3.3% |
| Wheelabrator Millbury Facility | Wheelabrator Environmental Systems | Millbury, MA | ISO New England (ISNE) | 288.8 GWh | Aug 1987 | Jun 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Covanta Haverhill | Ogden Projects Inc-Haverhill | Haverhill, MA | ISO New England (ISNE) | 288.6 GWh | Apr 1989 | Jun 2026 | Non-biogenic Municipal Solid Waste : 52.8% Biogenic Municipal Solid Waste : 43.2% Distillate Fuel Oil : 4.0% |
| Rhode Island Hospital | Rhode Island Hospital | Providence, RI | ISO New England (ISNE) | 51.1 GWh | Sep 1974 | Jun 2026 | Natural Gas : 86.9% Residual Fuel Oil : 13.1% |
| Mascoma Hydro | Green Mountain Power Corp | W. Lebanon, NH | ISO New England (ISNE) | 202.0 MWh | Nov 1988 | Dec 2025 | Water |
| Wheelabrator Saugus | Wheelabrator Environmental Systems | Saugus, MA | ISO New England (ISNE) | 180.0 GWh | Jul 1985 | Jun 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Ocean State Power | Ocean State Power Co | Harrisville, RI | ISO New England (ISNE) | 1.0 TWh | Nov 1990 | Dec 2025 | Natural Gas : 99.7% |
| Wheelabrator Bridgeport | Wheelabrator Environmental Systems | Bridgeport, CT | ISO New England (ISNE) | 431.2 GWh | Jun 1988 | Jun 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Ryegate Associates, LLC | Ryegate Associates, LLC | East Ryegate, VT | ISO New England (ISNE) | 157.6 GWh | Aug 1992 | Dec 2025 | Wood/Wood Waste Solids |
| NE Renewable Fitchburg, LLC | NE Renewable Fitchburg, LLC | Westminster, MA | ISO New England (ISNE) | 78.7 GWh | Jul 1992 | Dec 2025 | Wood/Wood Waste Solids : 98.7% Natural Gas : 1.3% |
| Aziscohos Hydroelectric Project | Brookfield White Pine Hydro LLC | Wilson Mills, ME | ISO New England (ISNE) | 29.8 GWh | May 1988 | Dec 2025 | Water |
| Pratt & Whitney | United Technologies | East Hartford, CT | ISO New England (ISNE) | 82.8 GWh | Dec 1991 | Jun 2026 | Natural Gas |
| Lochmere Hydroelectric Plant | Eagle Creek Renewable Energy, LLC | Tilton, NH | ISO New England (ISNE) | 2.1 GWh | Nov 1984 | Oct 2025 | Water |
| NE Renewable Tamworth, LLC | NE Renewable Tamworth, LLC | Tamworth, NH | ISO New England (ISNE) | 77.8 GWh | Nov 1987 | Dec 2025 | Wood/Wood Waste Solids |
| Mechanic Falls | KEI (Maine) Power Management (IV) LLC | Mechanic Falls, ME | ISO New England (ISNE) | 1.9 GWh | Mar 1986 | Dec 2025 | Water |
| Pittsfield Hydro | KEI (Maine) Power Management (II) LLC | Burnham, ME | ISO New England (ISNE) | 2.7 GWh | Jun 1986 | Dec 2025 | Water |
| Great Lakes Hydro America - ME | Great Lakes Hydro America LLC | Millinocket, ME | ISO New England (ISNE) | 500.1 GWh | Jun 1917 | Dec 2025 | Water |
| Milford Power LP | Milford Power LLC | Milford, MA | ISO New England (ISNE) | 253.3 GWh | Feb 1993 | Dec 2025 | Natural Gas |
| Hydro Kennebec Project | Hydro Kennebec LLC | Winslow, ME | ISO New England (ISNE) | 36.8 GWh | Dec 1988 | Nov 2025 | Water |
| Gardiner | KEI (Maine) Power Management (III) LLC | Gardiner, ME | ISO New England (ISNE) | 4.1 GWh | Jun 1985 | Jun 2025 | Water |
| Gillette SBMC | The Gillette Company | Boston, MA | ISO New England (ISNE) | 58.4 GWh | Jan 1971 | Jun 2026 | Natural Gas |
| Wheelabrator Lisbon | Wheelabrator Environmental Systems | Lisbon, CT | ISO New England (ISNE) | 101.1 GWh | Sep 1995 | Jun 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Erving Paper Mills | Erving Paper Mills Inc | Erving, MA | ISO New England (ISNE) | 42.1 GWh | Nov 2013 | Jun 2026 | Natural Gas : 98.0% Distillate Fuel Oil : 2.0% |
| Pumpkin Hill | KEI (Maine) Power Management (II) LLC | Lowell, ME | ISO New England (ISNE) | 2.9 GWh | Feb 1987 | Dec 2025 | Water |
| Pfizer Groton Plant | Pfizer Inc | Groton, CT | ISO New England (ISNE) | 77.6 GWh | Dec 1947 | Jun 2026 | Natural Gas : 88.8% Distillate Fuel Oil : 11.2% |
| Salmon Falls | Green Mountain Power Corp | South Berwick, ME | ISO New England (ISNE) | 2.1 GWh | Jun 1986 | Dec 2025 | Water |
| Upper Barker | KEI (Maine) Power Management (III) LLC | Auburn, ME | ISO New England (ISNE) | 4.0 GWh | Apr 1987 | Dec 2025 | Water |
| Goodwin Hydroelectric | Metropolitan Dist of Hartford | W. Hartland, CT | ISO New England (ISNE) | 7.8 GWh | Mar 1986 | Oct 2025 | Water |
| Thundermist Hydro | City of Woonsocket - (RI) | Providence, RI | ISO New England (ISNE) | 3.3 GWh | May 1981 | Jul 2025 | Water |
| Somersworth Lower Great Dam | Green Mountain Power Corp | Somersworth, NH | ISO New England (ISNE) | 498.0 MWh | Jun 1985 | Dec 2025 | Water |
| Huntington Falls | Green Mountain Power Corp | Weybridge, VT | ISO New England (ISNE) | 12.0 GWh | Sep 1988 | Dec 2025 | Water |
| Ocean State Power II | Ocean State Power II | Harrisville, RI | ISO New England (ISNE) | 576.9 GWh | Sep 1991 | Dec 2025 | Natural Gas : 99.9% |
| Chace Mill Winooski One | City of Burlington Electric - (VT) | Winooski, VT | ISO New England (ISNE) | 17.1 GWh | Mar 1993 | Dec 2025 | Water |
| Pontook Hydro Facility | Pontook Operating LP | Dummer, NH | ISO New England (ISNE) | 50.9 GWh | Nov 1986 | Dec 2025 | Water |
| Dorchester Solar Site | Massachusetts Electric Co | Dorchester, MA | ISO New England (ISNE) | 1.6 GWh | Dec 2011 | Dec 2025 | Solar |
| Sheffield Wind | Evergreen Wind, LLC | Sheffield, VT | ISO New England (ISNE) | 55.6 GWh | Sep 2011 | Jun 2026 | Wind |
| Fort Hill 1, 2, 3 & 4 | Connecticut Mun Elec Engy Coop | Uncasville, CT | ISO New England (ISNE) | 691.0 MWh | Jul 2010 | Jun 2026 | Distillate Fuel Oil |
| Fishers Island 1 | Connecticut Mun Elec Engy Coop | Fisher's Island, NY | ISO New England (ISNE) | 129.0 MWh | Nov 2010 | Dec 2025 | Distillate Fuel Oil |
| Haverhill Solar Power Project | Massachusetts Electric Co | Haverhill, MA | ISO New England (ISNE) | 1.2 GWh | Nov 2010 | Dec 2025 | Solar |
| NEDC Solar Site | Massachusetts Electric Co | Whitinsville, MA | ISO New England (ISNE) | 953.0 MWh | May 2010 | Dec 2025 | Solar |
| Gary Court 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 381.0 MWh | Jun 2010 | Dec 2025 | Distillate Fuel Oil |
| Jewett City 1 | Connecticut Mun Elec Engy Coop | Jewett City, CT | ISO New England (ISNE) | 139.0 MWh | Jan 2010 | Dec 2025 | Distillate Fuel Oil |
| LNG 1 & 2 | Connecticut Mun Elec Engy Coop | Norwich, CT | ISO New England (ISNE) | 382.0 MWh | Mar 2010 | Dec 2025 | Distillate Fuel Oil |
| Lebanon Pines 1 & 2 | Connecticut Mun Elec Engy Coop | Lebanon, CT | ISO New England (ISNE) | 374.0 MWh | Mar 2010 | Dec 2025 | Distillate Fuel Oil |
| Water Treatment 1 & 2 | Connecticut Mun Elec Engy Coop | Groton, CT | ISO New England (ISNE) | 463.0 MWh | Sep 2010 | Jun 2026 | Distillate Fuel Oil |
| Waste Management Crossroads LFGTE | WM Renewable Energy LLC | Norridgewock, ME | ISO New England (ISNE) | 21.9 GWh | Feb 2009 | Dec 2025 | Landfill Gas |
| Beaver Ridge Wind | CPV Beaver Ridge Wind LLC | Freedom, ME | ISO New England (ISNE) | 10.9 GWh | Oct 2008 | Dec 2025 | Wind |
| New England Wind LLC | Avangrid Power LLC | Florida, MA | ISO New England (ISNE) | 72.9 GWh | Nov 2012 | Jun 2026 | Wind |
| Notus Wind 1 | Notus Clean Energy LLC | E. Falmouth, MA | ISO New England (ISNE) | 5.0 GWh | Jun 2010 | Dec 2025 | Wind |
Summary of Power Plants By State
Figures are based on June 2026 generation numbers.| State | Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Alabama | # 9 | 77 | 12,594.28 GWh |
| Alaska | # 48 | 140 | 563.53 GWh |
| Arizona | # 11 | 199 | 11,138.97 GWh |
| Arkansas | # 21 | 117 | 6,425.86 GWh |
| California | # 4 | 1,744 | 17,197.11 GWh |
| Colorado | # 29 | 309 | 4,933.21 GWh |
| Connecticut | # 34 | 173 | 3,737.86 GWh |
| Delaware | # 49 | 35 | 376.53 GWh |
| District of Columbia | # 51 | 17 | 18.29 GWh |
| Florida | # 2 | 342 | 26,309.59 GWh |
| Georgia | # 7 | 250 | 13,880.75 GWh |
| Hawaii | # 47 | 70 | 767.91 GWh |
| Idaho | # 41 | 152 | 2,099.32 GWh |
| Illinois | # 5 | 494 | 16,673.62 GWh |
| Indiana | # 18 | 222 | 8,401.10 GWh |
| Iowa | # 23 | 297 | 6,139.01 GWh |
| Kansas | # 25 | 188 | 5,758.25 GWh |
| Kentucky | # 22 | 61 | 6,181.49 GWh |
| Louisiana | # 15 | 90 | 9,779.36 GWh |
| Maine | # 45 | 242 | 1,215.46 GWh |
| Maryland | # 36 | 228 | 3,591.08 GWh |
| Massachusetts | # 44 | 666 | 1,410.23 GWh |
| Michigan | # 14 | 276 | 9,804.74 GWh |
| Minnesota | # 30 | 790 | 4,889.70 GWh |
| Mississippi | # 20 | 60 | 6,899.16 GWh |
| Missouri | # 24 | 129 | 6,066.44 GWh |
| State | Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Montana | # 40 | 71 | 2,225.73 GWh |
| Nebraska | # 39 | 126 | 3,184.64 GWh |
| Nevada | # 31 | 117 | 4,654.59 GWh |
| New Hampshire | # 43 | 57 | 1,659.52 GWh |
| New Jersey | # 28 | 398 | 5,055.63 GWh |
| New Mexico | # 33 | 159 | 4,408.01 GWh |
| New York | # 10 | 1,064 | 11,564.60 GWh |
| North Carolina | # 8 | 913 | 12,773.20 GWh |
| North Dakota | # 35 | 59 | 3,713.80 GWh |
| Ohio | # 6 | 213 | 13,969.06 GWh |
| Oklahoma | # 17 | 144 | 9,156.03 GWh |
| Oregon | # 27 | 281 | 5,322.08 GWh |
| Pennsylvania | # 3 | 259 | 21,018.65 GWh |
| Rhode Island | # 46 | 107 | 854.92 GWh |
| South Carolina | # 16 | 209 | 9,442.42 GWh |
| South Dakota | # 42 | 53 | 1,803.66 GWh |
| Tennessee | # 19 | 99 | 7,036.17 GWh |
| Texas | # 1 | 1,028 | 57,844.67 GWh |
| Utah | # 38 | 129 | 3,196.09 GWh |
| Vermont | # 50 | 118 | 180.62 GWh |
| Virginia | # 12 | 250 | 10,352.13 GWh |
| Washington | # 13 | 135 | 10,051.77 GWh |
| West Virginia | # 32 | 41 | 4,489.44 GWh |
| Wisconsin | # 26 | 266 | 5,542.48 GWh |
| Wyoming | # 37 | 69 | 3,318.53 GWh |