Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Weston Hydro | Brookfield White Pine Hydro LLC | Skowhegan, ME | ISO New England (ISNE) | 57.0 GWh | Dec 1919 | Dec 2025 | Water |
| Williams Hydro | Brookfield White Pine Hydro LLC | Solon, ME | ISO New England (ISNE) | 63.5 GWh | Dec 1938 | Dec 2025 | Water |
| Silver Maple | WEB Silver Maple Wind LLC | Clifton, ME | ISO New England (ISNE) | 63.9 GWh | Sep 2022 | Dec 2025 | Wind |
| Bull Hill Wind Project | Evergreen Wind, LLC | Eastbrook, ME | ISO New England (ISNE) | 66.5 GWh | Sep 2012 | Dec 2025 | Wind |
| Brunswick Hydro | Brookfield White Pine Hydro LLC | Brunswick, ME | ISO New England (ISNE) | 69.6 GWh | Feb 1982 | Dec 2025 | Water |
| West Enfield Hydro | Brookfield Black Bear Hydro, LLC | West Enfield, ME | ISO New England (ISNE) | 70.2 GWh | Mar 1988 | Dec 2025 | Water |
| Worumbo Hydro Station | Eagle Creek Renewable Energy, LLC | Lisbon Falls, ME | ISO New England (ISNE) | 74.3 GWh | Jan 1989 | Dec 2025 | Water |
| Skelton | Brookfield White Pine Hydro LLC | Dayton, ME | ISO New England (ISNE) | 77.2 GWh | Dec 1947 | Dec 2025 | Water |
| Regional Waste Systems | Ecomaine | Portland, ME | ISO New England (ISNE) | 86.8 GWh | May 1988 | Aug 2026 | Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.7% |
| Sanford Solar | Sanford Airport Solar, LLC | Sanford, ME | ISO New England (ISNE) | 88.3 GWh | Oct 2020 | Aug 2026 | Solar |
| Saddleback Ridge Wind Farm | CPV Saddleback Ridge Wind, LLC | Carthage, ME | ISO New England (ISNE) | 90.4 GWh | Nov 2014 | Dec 2025 | Wind |
| Anson Abenaki Hydros | Eagle Creek Renewable Energy, LLC | Madison, ME | ISO New England (ISNE) | 100.6 GWh | Dec 1949 | Dec 2025 | Water |
| Twin Rivers Paper Co LLC | Twin Rivers Paper Co LLC | Madawaska, ME | (NBSO) | 105.1 GWh | Apr 1987 | Aug 2026 | Purchased Steam |
| Record Hill Wind | Record Hill Wind LLC | Roxbury, ME | ISO New England (ISNE) | 110.2 GWh | Dec 2011 | Dec 2025 | Wind |
| Charles E Monty | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 114.4 GWh | Dec 1989 | Dec 2025 | Water |
| Gulf Island | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 115.0 GWh | Dec 1925 | Dec 2025 | Water |
| Hancock Wind Plant | Onward Energy | T22 MD, ME | ISO New England (ISNE) | 115.5 GWh | Nov 2016 | Aug 2026 | Wind |
| Farmington Solar | Farmington Solar, LLC | Farmington, ME | ISO New England (ISNE) | 122.7 GWh | Sep 2021 | Aug 2026 | Solar |
| Mars Hill Wind Farm Project | Evergreen Wind, LLC | Mars Hill, ME | (NBSO) | 128.3 GWh | Feb 2007 | Dec 2025 | Wind |
| Passadumkeag Windpark LLC | Southern Power Co | Greenbush, ME | ISO New England (ISNE) | 134.2 GWh | Jun 2016 | Aug 2026 | Wind |
| Moscow | Greenbacker Renewable Energy Corporation | Moscow, ME | ISO New England (ISNE) | 134.6 GWh | May 2025 | Aug 2026 | Wind |
| Stetson Wind I | Evergreen Wind, LLC | Danforth, ME | ISO New England (ISNE) | 145.9 GWh | Dec 2008 | Dec 2025 | Wind |
| Rollins Wind Project | Evergreen Wind, LLC | Winn Village, ME | ISO New England (ISNE) | 146.6 GWh | Jun 2011 | Dec 2025 | Wind |
| Harris Hydro | Brookfield White Pine Hydro LLC | West Forks, ME | ISO New England (ISNE) | 150.9 GWh | Dec 1953 | Dec 2025 | Water |
| Three Corners Solar | Three Corners Solar, LLC | Unity, ME | ISO New England (ISNE) | 189.1 GWh | Jun 2024 | Aug 2026 | Solar |
| ReEnergy Stratton LLC | ReEnergy Stratton LLC | Stratton, ME | ISO New England (ISNE) | 199.8 GWh | Oct 1989 | Dec 2025 | Wood/Wood Waste Solids |
| Rumford Falls Hydro Facility | Brookfield Power New England | Rumford, ME | ISO New England (ISNE) | 212.1 GWh | Dec 1917 | Dec 2025 | Water |
| Weaver Wind | Greenbacker Renewable Energy Corporation | Township 16, ME | ISO New England (ISNE) | 214.4 GWh | Nov 2020 | Aug 2026 | Wind |
| Kibby Wind Facility | Helix Maine Wind Development, LLC | Chain of Ponds, ME | ISO New England (ISNE) | 250.0 GWh | Sep 2009 | Aug 2026 | Wind |
| ReEnergy Livermore Falls | ReEnergy Livermore Falls | Livermore Falls, ME | ISO New England (ISNE) | 273.8 GWh | Jul 1992 | Dec 2025 | Wood/Wood Waste Solids |
| Wyman Hydro | Brookfield White Pine Hydro LLC | Bingham, ME | ISO New England (ISNE) | 295.2 GWh | Dec 1929 | Dec 2025 | Water |
| William F Wyman Hybrid | FPL Energy Wyman LLC | Yarmouth, ME | ISO New England (ISNE) | 322.7 GWh | Dec 1956 | Jul 2026 | Residual Fuel Oil : 99.6% |
| Oakfield Wind Project | Onward Energy | City of Oakfield, ME | ISO New England (ISNE) | 328.7 GWh | Sep 2015 | Aug 2026 | Wind |
| Woodland Pulp, LLC | Woodland Pulp LLC | Baileyville, ME | (NBSO) | 344.2 GWh | May 1906 | Dec 2025 | Black Liquor : 37.9% Natural Gas : 30.9% Water : 16.6% Wood/Wood Waste Solids : 14.5% |
| Downeast Wind | Downeast Wind, LLC | Columbia, ME | ISO New England (ISNE) | 378.5 GWh | Dec 2024 | Aug 2026 | Wind |
| Rumford Cogeneration | ND Paper, Inc. | Rumford, ME | ISO New England (ISNE) | 397.1 GWh | Dec 1989 | Aug 2026 | Black Liquor : 55.0% Tire-derived Fuels : 20.3% Wood/Wood Waste Solids : 16.5% Bituminous Coal : 5.8% Residual Fuel Oil : 1.1% Natural Gas : 0.6% Sludge Waste : 0.6% |
| Bingham Wind | Onward Energy | Bingham, ME | ISO New England (ISNE) | 483.7 GWh | Nov 2016 | Aug 2026 | Wind |
| Great Lakes Hydro America - ME | Great Lakes Hydro America LLC | Millinocket, ME | ISO New England (ISNE) | 500.1 GWh | Jun 1917 | Dec 2025 | Water |
| Somerset Plant | Sappi Fine Paper North America-Somerset | Skowhegan, ME | ISO New England (ISNE) | 576.9 GWh | Dec 1975 | Aug 2026 | Black Liquor : 47.6% Wood/Wood Waste Solids : 31.5% Natural Gas : 12.7% Tire-derived Fuels : 4.3% Residual Fuel Oil : 3.1% Sludge Waste : 0.6% |
| Rumford Power LLC | Rumford Power | Rumford, ME | ISO New England (ISNE) | 792.6 GWh | Jun 2000 | Dec 2025 | 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 |
| Westbrook Energy Center Power Plant | Westbrook Energy Center | Westbrook, ME | ISO New England (ISNE) | 3.6 TWh | Apr 2001 | Aug 2026 | Natural Gas |
Browse Power Plants By Maine Counties
Figures are based on December 2025 generation numbers.| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Lincoln County, ME | # 16 | 4 | 21.0 GWh |
| Knox County, ME | # 15 | 6 | 22.2 GWh |
| Sagadahoc County, ME | # 14 | 5 | 65.0 GWh |
| Kennebec County, ME | # 13 | 34 | 209.2 GWh |
| Waldo County, ME | # 12 | 10 | 276.3 GWh |
| York County, ME | # 11 | 26 | 311.4 GWh |
| Hancock County, ME | # 10 | 16 | 484.9 GWh |
| Piscataquis County, ME | # 9 | 4 | 514.9 GWh |
| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Aroostook County, ME | # 8 | 33 | 666.5 GWh |
| Androscoggin County, ME | # 7 | 32 | 764.8 GWh |
| Franklin County, ME | # 6 | 18 | 765.3 GWh |
| Washington County, ME | # 5 | 10 | 938.2 GWh |
| Somerset County, ME | # 4 | 38 | 1.6 TWh |
| Oxford County, ME | # 3 | 24 | 1.7 TWh |
| Penobscot County, ME | # 2 | 51 | 2.6 TWh |
| Cumberland County, ME | # 1 | 25 | 4.1 TWh |