Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| William F Wyman Hybrid | FPL Energy Wyman LLC | Yarmouth, ME | ISO New England (ISNE) | 26.4 GWh | Dec 1956 | Aug 2024 | Residual Fuel Oil : 98.9% Distillate Fuel Oil : 1.1% |
| ME-EDFR-Phase I-Woolwich | Green Mile Solar, LLC | Woolwich, ME | ISO New England (ISNE) | 1.5 GWh | Aug 2023 | Dec 2023 | Solar |
| Cenergy - Wiscasset (CSG) | Luminace Sunbeam Development Holdings, LLC | Wiscasset, ME | ISO New England (ISNE) | 2.5 GWh | Jun 2023 | Dec 2023 | Solar |
| Hydro Kennebec Project | Hydro Kennebec LLC | Winslow, ME | ISO New England (ISNE) | 69.6 GWh | Dec 1988 | Dec 2023 | Water |
| Winslow PV - BD Solar 2 LLC | BD Solar 2 LLC | Winslow, ME | ISO New England (ISNE) | 10.9 GWh | Jun 2022 | Dec 2023 | Solar |
| Rollins Wind Project | Evergreen Wind, LLC | Winn Village, ME | ISO New England (ISNE) | 132.2 GWh | Jun 2011 | Dec 2023 | Wind |
| Pleasant Street | Greenbacker Renewable Energy Corporation | Wilton, ME | ISO New England (ISNE) | 98.0 MWh | Nov 2023 | Dec 2023 | Solar |
| Aziscohos Hydroelectric Project | Brookfield White Pine Hydro LLC | Wilson Mills, ME | ISO New England (ISNE) | 38.7 GWh | May 1988 | Dec 2023 | Water |
| S D Warren Westbrook | Elevate Power Management LLC | Westbrook, ME | ISO New England (ISNE) | 32.7 GWh | Dec 1902 | Dec 2023 | Water |
| Westbrook Energy Center Power Plant | Westbrook Energy Center | Westbrook, ME | ISO New England (ISNE) | 3.1 TWh | Apr 2001 | Aug 2024 | Natural Gas |
| Harris Hydro | Brookfield White Pine Hydro LLC | West Forks, ME | ISO New England (ISNE) | 277.6 GWh | Dec 1953 | Dec 2023 | Water |
| Indeck West Enfield Energy Center | Stored Solar J&WE | West Enfield, ME | ISO New England (ISNE) | 13.5 GWh | Nov 1987 | Dec 2023 | Wood/Wood Waste Solids : 99.7% |
| West Enfield Hydro | Brookfield Black Bear Hydro, LLC | West Enfield, ME | ISO New England (ISNE) | 100.4 GWh | Mar 1988 | Dec 2023 | Water |
| Baldwin | Maine DG Solar Baldwin, LLC | West Baldwin, ME | ISO New England (ISNE) | 9.0 GWh | Feb 2022 | Dec 2023 | Solar |
| Wells (ME) | Nautilus Solar Solutions | Wells, ME | ISO New England (ISNE) | 8.3 GWh | Jun 2022 | Dec 2023 | Solar |
| Lockwood Hydroelectric Facility | Merimil Ltd Partnership | Waterville, ME | ISO New England (ISNE) | 23.7 GWh | Sep 1985 | Dec 2023 | Water |
| Webb Road Solar | NextGrid Mastic, LLC | Waterville, ME | ISO New England (ISNE) | 4.7 GWh | Aug 2022 | Dec 2023 | Solar |
| Messalonskee 5 | Messalonskee Stream Hydro LLC | Waterville, ME | ISO New England (ISNE) | 5.1 GWh | Dec 1934 | Dec 2023 | Water |
| Cenergy - Waterville (CSG) | Luminace Sunbeam Development Holdings, LLC | Waterville, ME | ISO New England (ISNE) | 1.8 GWh | Jun 2023 | Dec 2023 | Solar |
| Washington WS01 | Nautilus Solar Solutions | Washington, ME | ISO New England (ISNE) | 5.5 GWh | May 2022 | Dec 2023 | Solar |
| Fox Island Wind LLC | Fox Island Wind LLC | Vinalhaven, ME | ISO New England (ISNE) | 5.7 GWh | Oct 2009 | Dec 2023 | Wind |
| Maine Independence Station | Casco Bay Energy Co LLC | Veazie, ME | ISO New England (ISNE) | 936.9 GWh | Apr 2000 | Dec 2023 | Natural Gas |
| Unity Solar | Madison Energy Holdings LLC | Unity, ME | ISO New England (ISNE) | 7.3 GWh | Nov 2021 | Dec 2023 | Solar |
| Three Corners Solar | Three Corners Solar, LLC | Unity, ME | ISO New England (ISNE) | 48.3 GWh | - | Aug 2024 | Solar |
| Weaver Wind | Weaver Wind, LLC (Longroad) | Township 16, ME | ISO New England (ISNE) | 194.9 GWh | Nov 2020 | Aug 2024 | Wind |
| Pejepscot Hydroelectric Project | Topsham Hydro Partners | Topsham, ME | ISO New England (ISNE) | 70.6 GWh | Oct 1987 | Dec 2023 | Water |
| Hancock Wind Plant | Onward Energy | T22 MD, ME | ISO New England (ISNE) | 108.4 GWh | Nov 2016 | Aug 2024 | Wind |
| ReEnergy Stratton LLC | ReEnergy Stratton LLC | Stratton, ME | ISO New England (ISNE) | 177.1 GWh | Oct 1989 | Dec 2023 | Wood/Wood Waste Solids |
| Stillwater Hydro Station | Brookfield Black Bear Hydro, LLC | Stillwater, ME | ISO New England (ISNE) | 12.1 GWh | Dec 1912 | Dec 2023 | Water |
| Standish | Nautilus Solar Solutions | Standish, ME | ISO New England (ISNE) | 535.0 MWh | Sep 2023 | Dec 2023 | Solar |
| Salmon Falls | Green Mountain Power Corp | South Berwick, ME | ISO New England (ISNE) | 4.9 GWh | Jun 1986 | Dec 2023 | Water |
| Williams Hydro | Brookfield White Pine Hydro LLC | Solon, ME | ISO New England (ISNE) | 97.2 GWh | Dec 1938 | Dec 2023 | Water |
| Somerset Plant | Sappi Fine Paper North America-Somerset | Skowhegan, ME | ISO New England (ISNE) | 485.5 GWh | Dec 1975 | Aug 2024 | Black Liquor : 46.4% Wood/Wood Waste Solids : 37.3% Tire-derived Fuels : 6.7% Natural Gas : 6.2% Residual Fuel Oil : 2.3% Sludge Waste : 1.0% |
| Weston Hydro | Brookfield White Pine Hydro LLC | Skowhegan, ME | ISO New England (ISNE) | 88.4 GWh | Dec 1919 | Dec 2023 | Water |
| ME Novel Lighthouse - Front St. Solar CSG | Luminace Sunbeam Development Holdings, LLC | Skowhegan, ME | ISO New England (ISNE) | 1.4 GWh | Apr 2023 | Dec 2023 | Solar |
| Sidney | Nautilus Solar Solutions | Sidney, ME | ISO New England (ISNE) | 1.4 GWh | Apr 2023 | Dec 2023 | Solar |
| Shawmut | Brookfield White Pine Hydro LLC | Shawmut, ME | ISO New England (ISNE) | 36.7 GWh | Dec 1912 | Dec 2023 | Water |
| Caterpillar Hill | AES Clean Energy | Sedgwick, ME | ISO New England (ISNE) | 235.0 MWh | Nov 2023 | Dec 2023 | Solar |
| Georges River Energy | Robbins Lumber Inc | Searsmont, ME | ISO New England (ISNE) | 40.3 GWh | Nov 2018 | Dec 2023 | Wood/Wood Waste Solids |
| Robbins Lumber | Robbins Lumber Inc | Searsmont, ME | ISO New England (ISNE) | 97.0 MWh | Dec 1980 | Dec 2023 | Distillate Fuel Oil |
| BWC Beech Ridge Brook, LLC | Navisun LLC | Scarborough, ME | ISO New England (ISNE) | 4.7 GWh | Apr 2023 | Dec 2023 | Solar |
| Sanford Solar | Sanford Airport Solar, LLC | Sanford, ME | ISO New England (ISNE) | 87.8 GWh | Oct 2020 | Aug 2024 | Solar |
| Cataract Hydro | Brookfield White Pine Hydro LLC | Saco, ME | ISO New England (ISNE) | 2.0 GWh | Dec 1936 | Dec 2023 | Water |
| Rumford Power LLC | Rumford Power | Rumford, ME | ISO New England (ISNE) | 403.4 GWh | Jun 2000 | Dec 2023 | Natural Gas |
| Rumford Falls Hydro Facility | Brookfield Power New England | Rumford, ME | ISO New England (ISNE) | 290.2 GWh | Dec 1917 | Dec 2023 | Water |
| Rumford Cogeneration | ND Paper, Inc. | Rumford, ME | ISO New England (ISNE) | 391.4 GWh | Dec 1989 | Aug 2024 | Black Liquor : 51.2% Tire-derived Fuels : 23.1% Wood/Wood Waste Solids : 13.6% Bituminous Coal : 9.0% Residual Fuel Oil : 2.4% Sludge Waste : 0.8% |
| Mainely Solar (Wyman Hill Solar LLC) | Wyman Hill Solar, LLC | Rumford, ME | ISO New England (ISNE) | 3.9 GWh | Nov 2022 | Dec 2023 | Solar |
| RoxWind | RoxWind LLC | Roxbury, ME | ISO New England (ISNE) | 10.4 GWh | Oct 2021 | Dec 2023 | Wind |
| Record Hill Wind | Record Hill Wind LLC | Roxbury, ME | ISO New England (ISNE) | 110.9 GWh | Dec 2011 | Dec 2023 | Wind |
| Brassua Hydroelectric Project | Brassua Hydroelectric LP | Rockwood, ME | ISO New England (ISNE) | 19.9 GWh | Aug 1989 | Dec 2023 | Water |
| BWC Maces Pond LLC | Navisun LLC | Rockport, ME | ISO New England (ISNE) | 4.4 GWh | Nov 2021 | Dec 2023 | Solar |
| Samoset Solar | Samoset Solar, LLC | Rockport, ME | ISO New England (ISNE) | 1.8 GWh | Jun 2023 | Dec 2023 | Solar |
| Richmond Hill | Greenbacker Renewable Energy Corporation | Richmond, ME | ISO New England (ISNE) | 16.0 MWh | Nov 2023 | Dec 2023 | Solar |
| Water Street Solar | AES Distributed Energy | Randolph, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2022 | Dec 2023 | Solar |
| Cape Gas Turbine | FPL Energy Cape LLC | Portland, ME | ISO New England (ISNE) | 532.0 MWh | Dec 1969 | Dec 2023 | Distillate Fuel Oil |
| Regional Waste Systems | Ecomaine | Portland, ME | ISO New England (ISNE) | 80.9 GWh | May 1988 | Aug 2024 | Non-biogenic Municipal Solid Waste : 54.4% Biogenic Municipal Solid Waste : 44.5% Natural Gas : 1.0% |
| Lewiston Junction Road Solar | NextGrid Peppertree, LLC | Poland, ME | ISO New England (ISNE) | 6.3 GWh | Dec 2021 | Dec 2023 | Solar |
| Pittsfield Solar LLC | Pittsfiled Solar LLC | Pittsfield, ME | ISO New England (ISNE) | 15.7 GWh | Nov 2017 | Dec 2023 | Solar |
| Pittsfield Solar (N. Main St) | Maine DG Solar Pittsfield, LLC | Pittsfield, ME | ISO New England (ISNE) | 2.1 GWh | Sep 2023 | Dec 2023 | Solar |
| Palmyra PV - BD Solar Palmyra LLC | BD Solar Palmyra LLC | Palmyra, ME | ISO New England (ISNE) | 7.8 GWh | May 2022 | Dec 2023 | Solar |
| Oxford PV - BD Solar Oxford LLC | BD Solar Oxford LLC | Oxford, ME | ISO New England (ISNE) | 10.9 GWh | May 2021 | Dec 2023 | Solar |
| Penobscot Energy Recovery | ESOCO Orrington LLC | Orrington, ME | ISO New England (ISNE) | 31.5 GWh | Oct 1987 | May 2023 | Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Distillate Fuel Oil : 1.6% |
| Orono B | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 25.5 GWh | Oct 2013 | Dec 2023 | Water |
| Orono Hydro Station | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 11.6 GWh | Dec 2008 | Dec 2023 | Water |
| Stillwater B | Brookfield Black Bear Hydro, LLC | Old Town, ME | ISO New England (ISNE) | 12.8 GWh | Aug 2013 | Dec 2023 | Water |
| Red Shield Envir Old Town Facility | ND Paper, Inc. | Old Town, ME | ISO New England (ISNE) | 66.3 GWh | Jun 1965 | Apr 2023 | Wood/Wood Waste Solids : 63.4% Black Liquor : 22.1% Natural Gas : 11.8% Residual Fuel Oil : 2.7% |
| Messalonskee 2 (Oakland) | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 12.9 GWh | Dec 1923 | Dec 2023 | Water |
| Messalonskee 3 | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 7.3 GWh | Dec 1917 | Dec 2023 | Water |
| Solar Mule, LLC | Solar Mule, LLC | Oakland, ME | ISO New England (ISNE) | 2.0 GWh | Aug 2017 | Dec 2023 | Solar |
| North Bridgton | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.2 GWh | Oct 2022 | Dec 2023 | Solar |
| Oakland | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.0 GWh | Aug 2022 | Dec 2023 | Solar |
| River Road | Norridgewock River Road Solar, LLC | Norridgewock, ME | ISO New England (ISNE) | 7.7 GWh | Feb 2022 | Dec 2023 | Solar |
| Waste Management Crossroads LFGTE | WM Renewable Energy LLC | Norridgewock, ME | ISO New England (ISNE) | 19.5 GWh | Feb 2009 | Dec 2023 | Landfill Gas |
| Naples | Naples Casco Solar 1, LLC | Naples, ME | ISO New England (ISNE) | 1.8 GWh | Nov 2021 | Dec 2023 | Solar |
| Monmouth | Maine DG Solar Monmouth, LLC | Monmouth, ME | ISO New England (ISNE) | 8.2 GWh | Feb 2022 | Dec 2023 | Solar |
| Milo CSG | Milo CSG, LLC | Milo, ME | ISO New England (ISNE) | 6.0 GWh | Jan 2022 | Dec 2023 | Solar |
| Milo PV - BD Solar 1 LLC | BD Solar 1 LLC | Milo, ME | ISO New England (ISNE) | 25.2 GWh | May 2021 | Dec 2023 | Solar |
| Great Lakes Hydro America - ME | Great Lakes Hydro America LLC | Millinocket, ME | ISO New England (ISNE) | 737.2 GWh | Jun 1917 | Dec 2023 | Water |
| Milford Hydro Station | Brookfield Black Bear Hydro, LLC | Milford, ME | ISO New England (ISNE) | 53.0 GWh | Jun 1941 | Dec 2023 | Water |
| Medway Hydro | Brookfield Black Bear Hydro, LLC | Medway, ME | ISO New England (ISNE) | 27.5 GWh | Dec 1922 | Dec 2023 | Water |
| Mechanic Falls | KEI (Maine) Power Management (IV) LLC | Mechanic Falls, ME | ISO New England (ISNE) | 3.0 GWh | Mar 1986 | Dec 2023 | Water |
| Squa Pan Hydro Station | Algonquin Northern Maine | Masardis, ME | (NBSO) | 934.9 MWh | Nov 1941 | Aug 2023 | Water |
| Mars Hill Wind Farm Project | Evergreen Wind, LLC | Mars Hill, ME | (NBSO) | 104.8 GWh | Feb 2007 | Dec 2023 | Wind |
| Treasure Lane Solar 1 | AES Clean Energy | Manchester, ME | ISO New England (ISNE) | 1.0 GWh | Apr 2023 | Dec 2023 | Solar |
| Dynamic Madison | MN8 Energy LLC | Madison, ME | ISO New England (ISNE) | 8.9 GWh | Jul 2022 | Dec 2023 | Solar |
| Anson Abenaki Hydros | Eagle Creek Renewable Energy, LLC | Madison, ME | ISO New England (ISNE) | 145.1 GWh | Dec 1949 | Dec 2023 | Water |
| IOS - MEW Phase 1 | IGS ORIX Solar I, LLC | Madison, ME | ISO New England (ISNE) | 5.4 GWh | Dec 2016 | Dec 2023 | Solar |
| Twin Rivers Paper Co LLC | Twin Rivers Paper Co LLC | Madawaska, ME | (NBSO) | 106.0 GWh | Apr 1987 | Aug 2024 | Purchased Steam |
| Pumpkin Hill | KEI (Maine) Power Management (II) LLC | Lowell, ME | ISO New England (ISNE) | 5.5 GWh | Feb 1987 | Dec 2023 | Water |
| International Paper Livermore Hydro | Eagle Creek Renewable Energy, LLC | Livermore Falls, ME | ISO New England (ISNE) | 10.2 GWh | Dec 1909 | Dec 2023 | Water |
| Livermore Falls CSG | Livermore Falls CSG, LLC | Livermore Falls, ME | ISO New England (ISNE) | 5.0 GWh | Apr 2022 | Dec 2023 | Solar |
| Otis Hydro | Eagle Creek Renewable Energy, LLC | Livermore Falls, ME | ISO New England (ISNE) | 31.2 GWh | Dec 1984 | Aug 2024 | Water |
| ReEnergy Livermore Falls | ReEnergy Livermore Falls | Livermore Falls, ME | ISO New England (ISNE) | 222.7 GWh | Jul 1992 | Dec 2023 | Wood/Wood Waste Solids |
| Worumbo Hydro Station | Eagle Creek Renewable Energy, LLC | Lisbon Falls, ME | ISO New England (ISNE) | 104.8 GWh | Jan 1989 | Dec 2023 | Water |
| Loring | VC Renewables | Limestone, ME | ISO New England (ISNE) | 3.6 GWh | Apr 2023 | Dec 2023 | Solar |
| Charles E Monty | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 176.6 GWh | Dec 1989 | Dec 2023 | Water |
| Merrill Road Solar | NextGrid Mangrove, LLC | Lewiston, ME | ISO New England (ISNE) | 5.6 GWh | Feb 2022 | Dec 2023 | Solar |
| Lisbon Street Solar | NextGrid Cliffrose, LLC | Lewiston, ME | ISO New England (ISNE) | 2.7 GWh | Mar 2022 | Dec 2023 | Solar |
| Gulf Island | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 169.3 GWh | Dec 1925 | Dec 2023 | Water |
| International Paper Jay Hydro | Eagle Creek Renewable Energy, LLC | Jay, ME | ISO New England (ISNE) | 7.1 GWh | Dec 1911 | Sep 2023 | Water |
Browse Power Plants By Maine Counties
Figures are based on December 2023 generation numbers.| County | State Rank | Active Plants | Dec 2023 Generation |
|---|---|---|---|
| Lincoln County, ME | # 16 | 3 | 2.5 GWh |
| Knox County, ME | # 15 | 5 | 17.4 GWh |
| Sagadahoc County, ME | # 14 | 4 | 72.1 GWh |
| Waldo County, ME | # 13 | 6 | 106.3 GWh |
| Kennebec County, ME | # 12 | 24 | 214.5 GWh |
| York County, ME | # 11 | 19 | 325.7 GWh |
| Hancock County, ME | # 10 | 13 | 449.3 GWh |
| Piscataquis County, ME | # 9 | 4 | 457.9 GWh |
| County | State Rank | Active Plants | Dec 2023 Generation |
|---|---|---|---|
| Washington County, ME | # 8 | 7 | 518.9 GWh |
| Aroostook County, ME | # 7 | 26 | 537.7 GWh |
| Androscoggin County, ME | # 6 | 28 | 801.0 GWh |
| Franklin County, ME | # 5 | 16 | 827.3 GWh |
| Oxford County, ME | # 4 | 18 | 1.4 TWh |
| Somerset County, ME | # 3 | 35 | 1.8 TWh |
| Penobscot County, ME | # 2 | 43 | 2.4 TWh |
| Cumberland County, ME | # 1 | 20 | 3.4 TWh |