Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Westbrook Energy Center Power Plant | Westbrook Energy Center | Westbrook, ME | ISO New England (ISNE) | 2.9 TWh | Apr 2001 | Sep 2025 | Natural Gas |
| Maine Independence Station | Casco Bay Energy Co LLC | Veazie, ME | ISO New England (ISNE) | 2.5 TWh | Apr 2000 | Dec 2024 | Natural Gas |
| Rumford Power LLC | Rumford Power | Rumford, ME | ISO New England (ISNE) | 637.7 GWh | Jun 2000 | Dec 2024 | Natural Gas |
| Somerset Plant | Sappi Fine Paper North America-Somerset | Skowhegan, ME | ISO New England (ISNE) | 573.0 GWh | Dec 1975 | Sep 2025 | Black Liquor : 46.2% Wood/Wood Waste Solids : 38.4% Natural Gas : 6.9% Tire-derived Fuels : 5.1% Residual Fuel Oil : 2.5% Sludge Waste : 0.8% |
| Great Lakes Hydro America - ME | Great Lakes Hydro America LLC | Millinocket, ME | ISO New England (ISNE) | 570.9 GWh | Jun 1917 | Dec 2024 | Water |
| Bingham Wind | Onward Energy | Bingham, ME | ISO New England (ISNE) | 489.0 GWh | Nov 2016 | Sep 2025 | Wind |
| Rumford Cogeneration | ND Paper, Inc. | Rumford, ME | ISO New England (ISNE) | 429.0 GWh | Dec 1989 | Sep 2025 | Black Liquor : 51.5% Tire-derived Fuels : 22.6% Wood/Wood Waste Solids : 14.3% Bituminous Coal : 7.6% Residual Fuel Oil : 3.2% Sludge Waste : 0.9% |
| Woodland Pulp, LLC | Woodland Pulp LLC | Baileyville, ME | (NBSO) | 381.5 GWh | May 1906 | Dec 2024 | Black Liquor : 50.1% Natural Gas : 29.3% Water : 12.3% Wood/Wood Waste Solids : 8.3% |
| Oakfield Wind Project | Onward Energy | City of Oakfield, ME | ISO New England (ISNE) | 367.0 GWh | Sep 2015 | Sep 2025 | Wind |
| Wyman Hydro | Brookfield White Pine Hydro LLC | Bingham, ME | ISO New England (ISNE) | 337.1 GWh | Dec 1929 | Dec 2024 | Water |
| ReEnergy Livermore Falls | ReEnergy Livermore Falls | Livermore Falls, ME | ISO New England (ISNE) | 266.8 GWh | Jul 1992 | Dec 2024 | Wood/Wood Waste Solids |
| Kibby Wind Facility | Helix Maine Wind Development, LLC | Chain of Ponds, ME | ISO New England (ISNE) | 261.9 GWh | Sep 2009 | Sep 2025 | Wind |
| Rumford Falls Hydro Facility | Brookfield Power New England | Rumford, ME | ISO New England (ISNE) | 260.5 GWh | Dec 1917 | Dec 2024 | Water |
| Weaver Wind | Weaver Wind, LLC (Longroad) | Township 16, ME | ISO New England (ISNE) | 227.2 GWh | Nov 2020 | Sep 2025 | Wind |
| ReEnergy Stratton LLC | ReEnergy Stratton LLC | Stratton, ME | ISO New England (ISNE) | 203.1 GWh | Oct 1989 | Dec 2024 | Wood/Wood Waste Solids |
| Three Corners Solar | Three Corners Solar, LLC | Unity, ME | ISO New England (ISNE) | 189.1 GWh | Jun 2024 | Sep 2025 | Solar |
| Harris Hydro | Brookfield White Pine Hydro LLC | West Forks, ME | ISO New England (ISNE) | 170.4 GWh | Dec 1953 | Dec 2024 | Water |
| Downeast Wind | Downeast Wind, LLC | Columbia, ME | ISO New England (ISNE) | 144.8 GWh | - | Sep 2025 | Wind |
| Charles E Monty | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 140.7 GWh | Dec 1989 | Dec 2024 | Water |
| Passadumkeag Windpark LLC | Southern Power Co | Greenbush, ME | ISO New England (ISNE) | 140.2 GWh | Jun 2016 | Sep 2025 | Wind |
| Gulf Island | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 136.3 GWh | Dec 1925 | Dec 2024 | Water |
| Rollins Wind Project | Evergreen Wind, LLC | Winn Village, ME | ISO New England (ISNE) | 136.1 GWh | Jun 2011 | Dec 2024 | Wind |
| Farmington Solar | Farmington Solar, LLC | Farmington, ME | ISO New England (ISNE) | 128.8 GWh | Sep 2021 | Sep 2025 | Solar |
| Hancock Wind Plant | Onward Energy | T22 MD, ME | ISO New England (ISNE) | 121.2 GWh | Nov 2016 | Sep 2025 | Wind |
| Stetson Wind I | Evergreen Wind, LLC | Danforth, ME | ISO New England (ISNE) | 120.7 GWh | Dec 2008 | Dec 2024 | Wind |
| Mars Hill Wind Farm Project | Evergreen Wind, LLC | Mars Hill, ME | (NBSO) | 118.9 GWh | Feb 2007 | Dec 2024 | Wind |
| Anson Abenaki Hydros | Eagle Creek Renewable Energy, LLC | Madison, ME | ISO New England (ISNE) | 116.3 GWh | Dec 1949 | Dec 2024 | Water |
| Record Hill Wind | Record Hill Wind LLC | Roxbury, ME | ISO New England (ISNE) | 115.0 GWh | Dec 2011 | Dec 2024 | Wind |
| Twin Rivers Paper Co LLC | Twin Rivers Paper Co LLC | Madawaska, ME | (NBSO) | 99.1 GWh | Apr 1987 | Sep 2025 | Purchased Steam |
| Regional Waste Systems | Ecomaine | Portland, ME | ISO New England (ISNE) | 89.6 GWh | May 1988 | Sep 2025 | Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.7% |
| Worumbo Hydro Station | Eagle Creek Renewable Energy, LLC | Lisbon Falls, ME | ISO New England (ISNE) | 88.7 GWh | Jan 1989 | Dec 2024 | Water |
| Brunswick Hydro | Brookfield White Pine Hydro LLC | Brunswick, ME | ISO New England (ISNE) | 88.1 GWh | Feb 1982 | Dec 2024 | Water |
| Sanford Solar | Sanford Airport Solar, LLC | Sanford, ME | ISO New England (ISNE) | 88.0 GWh | Oct 2020 | Sep 2025 | Solar |
| Saddleback Ridge Wind Farm | CPV Saddleback Ridge Wind, LLC | Carthage, ME | ISO New England (ISNE) | 82.9 GWh | Nov 2014 | Dec 2024 | Wind |
| Williams Hydro | Brookfield White Pine Hydro LLC | Solon, ME | ISO New England (ISNE) | 80.2 GWh | Dec 1938 | Dec 2024 | Water |
| West Enfield Hydro | Brookfield Black Bear Hydro, LLC | West Enfield, ME | ISO New England (ISNE) | 77.5 GWh | Mar 1988 | Dec 2024 | Water |
| Bull Hill Wind Project | Evergreen Wind, LLC | Eastbrook, ME | ISO New England (ISNE) | 74.0 GWh | Sep 2012 | Dec 2024 | Wind |
| William F Wyman Hybrid | FPL Energy Wyman LLC | Yarmouth, ME | ISO New England (ISNE) | 65.9 GWh | Dec 1956 | Sep 2025 | Residual Fuel Oil : 99.2% Distillate Fuel Oil : 0.8% |
| Silver Maple | WEB Silver Maple Wind LLC | Clifton, ME | ISO New England (ISNE) | 58.7 GWh | Sep 2022 | Dec 2024 | Wind |
| Athens Energy | Athens Energy, LLC | Athens, ME | ISO New England (ISNE) | 58.2 GWh | Sep 2016 | Dec 2024 | Wood/Wood Waste Solids |
| Deer Rips | Brookfield White Pine Hydro LLC | Auburn, ME | ISO New England (ISNE) | 58.2 GWh | Dec 1902 | Dec 2024 | Water |
| Skelton | Brookfield White Pine Hydro LLC | Dayton, ME | ISO New England (ISNE) | 57.6 GWh | Dec 1947 | Dec 2024 | Water |
| Weston Hydro | Brookfield White Pine Hydro LLC | Skowhegan, ME | ISO New England (ISNE) | 57.4 GWh | Dec 1919 | Dec 2024 | Water |
| Spruce Mountain WInd | CPV Spruce Mountain Wind LLC | Bryant Pond, ME | ISO New England (ISNE) | 53.8 GWh | Nov 2011 | Dec 2024 | Wind |
| Georges River Energy | Robbins Lumber Inc | Searsmont, ME | ISO New England (ISNE) | 51.9 GWh | Nov 2018 | Dec 2024 | Wood/Wood Waste Solids |
| Indeck West Enfield Energy Center | Stored Solar J&WE | West Enfield, ME | ISO New England (ISNE) | 50.6 GWh | Nov 1987 | Dec 2024 | Wood/Wood Waste Solids : 99.9% |
| Canton Mountain Wind | CPV Canton Mountain Wind LLC | Canton, ME | ISO New England (ISNE) | 50.5 GWh | Oct 2017 | Dec 2024 | Wind |
| Stetson Wind II | Evergreen Wind, LLC | Danforth, ME | ISO New England (ISNE) | 49.7 GWh | Feb 2010 | Dec 2024 | Wind |
| Pejepscot Hydroelectric Project | Topsham Hydro Partners | Topsham, ME | ISO New England (ISNE) | 48.6 GWh | Oct 1987 | Dec 2024 | Water |
| Hiram | Brookfield White Pine Hydro LLC | Hiram, ME | ISO New England (ISNE) | 40.2 GWh | Dec 1916 | 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 |
| Aziscohos Hydroelectric Project | Brookfield White Pine Hydro LLC | Wilson Mills, ME | ISO New England (ISNE) | 36.3 GWh | May 1988 | Dec 2024 | Water |
| RoxWind | RoxWind LLC | Roxbury, ME | ISO New England (ISNE) | 35.8 GWh | Oct 2021 | Dec 2024 | Wind |
| Bonny Eagle | Brookfield White Pine Hydro LLC | Hollis, ME | ISO New England (ISNE) | 33.0 GWh | Dec 1909 | Dec 2024 | Water |
| S D Warren Westbrook | Relevate Power Management LLC | Westbrook, ME | ISO New England (ISNE) | 32.7 GWh | Dec 1902 | Dec 2023 | Water |
| Eastern Maine Medical Center | Eastern Maine Medical Center | Bangor, ME | ISO New England (ISNE) | 31.1 GWh | Sep 2006 | Sep 2025 | Natural Gas |
| Milo PV - BD Solar 1 LLC | BD Solar 1 LLC | Milo, ME | ISO New England (ISNE) | 30.8 GWh | May 2021 | Dec 2024 | Solar |
| Cataract Hydro | Brookfield White Pine Hydro LLC | Saco, ME | ISO New England (ISNE) | 28.5 GWh | Dec 1936 | Dec 2024 | Water |
| Otis Hydro | Eagle Creek Renewable Energy, LLC | Livermore Falls, ME | ISO New England (ISNE) | 27.7 GWh | Dec 1984 | Sep 2025 | Water |
| Hydro Kennebec Project | Hydro Kennebec LLC | Winslow, ME | ISO New England (ISNE) | 27.0 GWh | Dec 1988 | Dec 2024 | Water |
| Pisgah Mountain Wind | Pisgah Mountain, LLC | Clifton, ME | ISO New England (ISNE) | 25.3 GWh | Nov 2016 | Dec 2024 | Wind |
| Medway Hydro | Brookfield Black Bear Hydro, LLC | Medway, ME | ISO New England (ISNE) | 23.3 GWh | Dec 1922 | Dec 2024 | Water |
| Ellsworth Hydro Station | Brookfield Black Bear Hydro, LLC | Ellsworth, ME | ISO New England (ISNE) | 21.9 GWh | Jun 1924 | Dec 2024 | Water |
| Orono B | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 21.3 GWh | Oct 2013 | Dec 2024 | Water |
| West Buxton | Brookfield White Pine Hydro LLC | Buxton, ME | ISO New England (ISNE) | 20.4 GWh | Dec 1903 | Dec 2024 | Water |
| Waste Management Crossroads LFGTE | WM Renewable Energy LLC | Norridgewock, ME | ISO New England (ISNE) | 18.4 GWh | Feb 2009 | Dec 2024 | Landfill Gas |
| International Paper Riley Hydro | Eagle Creek Renewable Energy, LLC | Jay, ME | ISO New England (ISNE) | 17.7 GWh | Nov 1981 | Dec 2024 | Water |
| International Paper Livermore Hydro | Eagle Creek Renewable Energy, LLC | Livermore Falls, ME | ISO New England (ISNE) | 17.3 GWh | Dec 1909 | Dec 2024 | Water |
| Shawmut | Brookfield White Pine Hydro LLC | Shawmut, ME | ISO New England (ISNE) | 17.0 GWh | Dec 1912 | Dec 2024 | Water |
| Pittsfield Solar LLC | Pittsfiled Solar LLC | Pittsfield, ME | ISO New England (ISNE) | 16.5 GWh | Nov 2017 | Dec 2024 | Solar |
| Oxford PV - BD Solar Oxford LLC | BD Solar Oxford LLC | Oxford, ME | ISO New England (ISNE) | 14.7 GWh | May 2021 | Dec 2024 | Solar |
| Moscow | Greenbacker Renewable Energy Corporation | Moscow, ME | ISO New England (ISNE) | 14.5 GWh | - | Sep 2025 | Wind |
| Lockwood Hydroelectric Facility | Merimil Ltd Partnership | Waterville, ME | ISO New England (ISNE) | 13.6 GWh | Sep 1985 | Dec 2024 | Water |
| Winslow PV - BD Solar 2 LLC | BD Solar 2 LLC | Winslow, ME | ISO New England (ISNE) | 12.6 GWh | Jun 2022 | Dec 2024 | Solar |
| Messalonskee 2 (Oakland) | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 10.8 GWh | Dec 1923 | Dec 2024 | Water |
| Stillwater B | Brookfield Black Bear Hydro, LLC | Old Town, ME | ISO New England (ISNE) | 10.5 GWh | Aug 2013 | Dec 2024 | Water |
| Brassua Hydroelectric Project | Brassua Hydroelectric LP | Rockwood, ME | ISO New England (ISNE) | 10.4 GWh | Aug 1989 | Dec 2024 | Water |
| Beaver Ridge Wind | CPV Beaver Ridge Wind LLC | Freedom, ME | ISO New England (ISNE) | 10.4 GWh | Oct 2008 | Dec 2024 | Wind |
| Quarry | Nautilus Solar Solutions | North Berwick, ME | ISO New England (ISNE) | 10.4 GWh | Nov 2022 | Dec 2024 | Solar |
| Bucksport Generation LLC | Bucksport Generation LLC | Bucksport, ME | ISO New England (ISNE) | 10.2 GWh | Jun 1965 | Aug 2025 | Natural Gas : 97.3% Distillate Fuel Oil : 2.7% |
| MMWAC Resource Recovery Facility | Maine Waste to Energy | Auburn, ME | ISO New England (ISNE) | 10.1 GWh | May 1992 | Sep 2025 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.1% Natural Gas : 1.9% |
| Augusta PV - BD Solar Augusta LLC | BD Solar Augusta LLC | Augusta, ME | ISO New England (ISNE) | 10.1 GWh | May 2021 | Dec 2024 | Solar |
| Dynamic Madison (CSG) | MN8 Energy LLC | Madison, ME | ISO New England (ISNE) | 9.9 GWh | Jul 2022 | Dec 2024 | Solar |
| Baldwin (ME) | Maine DG Solar Baldwin, LLC | West Baldwin, ME | ISO New England (ISNE) | 9.9 GWh | Feb 2022 | Dec 2024 | Solar |
| Monmouth | Maine DG Solar Monmouth, LLC | Monmouth, ME | ISO New England (ISNE) | 9.4 GWh | Feb 2022 | Dec 2024 | Solar |
| Fryeburg | Nautilus Solar Solutions | Fryeburg, ME | ISO New England (ISNE) | 9.4 GWh | Apr 2023 | Dec 2024 | Solar |
| Dynamic Corinth (CSG) | MN8 Energy LLC | Corinth, ME | ISO New England (ISNE) | 9.3 GWh | Sep 2022 | Dec 2024 | Solar |
| Cenergy - Waterville (CSG) | Luminace Sunbeam Development Holdings, LLC | Waterville, ME | ISO New England (ISNE) | 9.1 GWh | Jun 2023 | Dec 2024 | Solar |
| Oakland | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 9.0 GWh | Aug 2022 | Dec 2024 | Solar |
| Harmony Solar (ME) | Maine DG Solar Harmony, LLC | Harmony, ME | ISO New England (ISNE) | 8.9 GWh | Jul 2022 | Dec 2024 | Solar |
| Caterpillar Hill | AES Clean Energy | Sedgwick, ME | ISO New England (ISNE) | 8.8 GWh | Nov 2023 | Dec 2024 | Solar |
| Cenergy - Wiscasset (CSG) | Luminace Sunbeam Development Holdings, LLC | Wiscasset, ME | ISO New England (ISNE) | 8.5 GWh | Jun 2023 | Dec 2024 | Solar |
| Perkins Road Belfast Solar, LLC | REA Investments, LLC | Belfast, ME | ISO New England (ISNE) | 8.5 GWh | May 2021 | Dec 2024 | Solar |
| Palmyra PV - BD Solar Palmyra LLC | BD Solar Palmyra LLC | Palmyra, ME | ISO New England (ISNE) | 8.5 GWh | May 2022 | Dec 2024 | Solar |
| Pittsfield Solar (N. Main St) | Maine DG Solar Pittsfield, LLC | Pittsfield, ME | ISO New England (ISNE) | 8.4 GWh | Sep 2023 | Dec 2024 | Solar |
| Bates College Skowhegan | Westbound Solar 3, LLC | Skowhegan, ME | ISO New England (ISNE) | 8.4 GWh | Aug 2023 | Dec 2024 | Solar |
| North Bridgton | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.4 GWh | Oct 2022 | Dec 2024 | Solar |
| Fairfield PV - BD Solar Fairfield LLC | BD Solar Fairfield LLC | Fairfield, ME | ISO New England (ISNE) | 8.2 GWh | May 2021 | Dec 2024 | Solar |
| Town House | Nautilus Solar Solutions | Chelsea, ME | ISO New England (ISNE) | 8.2 GWh | Nov 2022 | Dec 2024 | Solar |
| River Road | Norridgewock River Road Solar, LLC | Norridgewock, ME | ISO New England (ISNE) | 8.2 GWh | Feb 2022 | Dec 2024 | Solar |
Browse Power Plants By Maine Counties
Figures are based on September 2025 generation numbers.| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Penobscot County, ME | # 1 | 47 | 3.8 TWh |
| Cumberland County, ME | # 2 | 22 | 3.3 TWh |
| Oxford County, ME | # 3 | 21 | 1.7 TWh |
| Somerset County, ME | # 4 | 36 | 1.6 TWh |
| Androscoggin County, ME | # 5 | 29 | 758.2 GWh |
| Franklin County, ME | # 6 | 16 | 750.4 GWh |
| Washington County, ME | # 7 | 9 | 696.9 GWh |
| Aroostook County, ME | # 8 | 32 | 625.5 GWh |
| County | State Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 4 | 526.8 GWh |
| Hancock County, ME | # 10 | 14 | 479.2 GWh |
| Waldo County, ME | # 11 | 9 | 272.1 GWh |
| York County, ME | # 12 | 22 | 262.0 GWh |
| Kennebec County, ME | # 13 | 27 | 198.0 GWh |
| Sagadahoc County, ME | # 14 | 5 | 63.5 GWh |
| Knox County, ME | # 15 | 5 | 22.0 GWh |
| Lincoln County, ME | # 16 | 4 | 18.4 GWh |