Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Limestone CSG 1 LLC | Limestone CSG 1 LLC | Limestone, ME | ISO New England (ISNE) | 5.9 GWh | Nov 2024 | Dec 2025 | Solar |
| Limestone CSG 2 LLC | Limestone CSG 2 LLC | Limestone, ME | ISO New England (ISNE) | 4.8 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic Corinth (CSG) | MN8 Energy LLC | Corinth, ME | ISO New England (ISNE) | 9.8 GWh | Sep 2022 | Dec 2025 | Solar |
| Dynamic Madison (CSG) | MN8 Energy LLC | Madison, ME | ISO New England (ISNE) | 9.5 GWh | Jul 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 |
| Charles E Monty | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 114.4 GWh | Dec 1989 | Dec 2025 | Water |
| Milo CSG | Milo CSG, LLC | Milo, ME | ISO New England (ISNE) | 6.7 GWh | Jan 2022 | Dec 2025 | Solar |
| Saddleback Ridge Wind Farm | CPV Saddleback Ridge Wind, LLC | Carthage, ME | ISO New England (ISNE) | 90.4 GWh | Nov 2014 | Dec 2025 | Wind |
| Kibby Wind Facility | Helix Maine Wind Development, LLC | Chain of Ponds, ME | ISO New England (ISNE) | 242.1 GWh | Sep 2009 | May 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 |
| Stetson Wind II | Evergreen Wind, LLC | Danforth, ME | ISO New England (ISNE) | 55.3 GWh | Feb 2010 | Dec 2025 | Wind |
| Oakfield Wind Project | Onward Energy | City of Oakfield, ME | ISO New England (ISNE) | 339.8 GWh | Sep 2015 | May 2026 | Wind |
| Waste Management Crossroads LFGTE | WM Renewable Energy LLC | Norridgewock, ME | ISO New England (ISNE) | 21.9 GWh | Feb 2009 | Dec 2025 | Landfill Gas |
| Bull Hill Wind Project | Evergreen Wind, LLC | Eastbrook, ME | ISO New England (ISNE) | 66.5 GWh | Sep 2012 | Dec 2025 | Wind |
| Beaver Ridge Wind | CPV Beaver Ridge Wind LLC | Freedom, ME | ISO New England (ISNE) | 10.9 GWh | Oct 2008 | Dec 2025 | Wind |
| Orono Hydro Station | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 6.2 GWh | Dec 2008 | Dec 2025 | Water |
| Fox Island Wind LLC | Fox Island Wind LLC | Vinalhaven, ME | ISO New England (ISNE) | 8.7 GWh | Oct 2009 | Dec 2025 | Wind |
| Bingham Wind | Onward Energy | Bingham, ME | ISO New England (ISNE) | 474.3 GWh | Nov 2016 | May 2026 | Wind |
| Record Hill Wind | Record Hill Wind LLC | Roxbury, ME | ISO New England (ISNE) | 110.2 GWh | Dec 2011 | Dec 2025 | Wind |
| Spruce Mountain WInd | CPV Spruce Mountain Wind LLC | Bryant Pond, ME | ISO New England (ISNE) | 52.6 GWh | Nov 2011 | Dec 2025 | Wind |
| Eastern Maine Medical Center | Eastern Maine Medical Center | Bangor, ME | ISO New England (ISNE) | 27.6 GWh | Sep 2006 | May 2026 | Natural Gas |
| Livermore Falls CSG | Livermore Falls CSG, LLC | Livermore Falls, ME | ISO New England (ISNE) | 4.3 GWh | Apr 2022 | Dec 2025 | Solar |
| Canton Mountain Wind | CPV Canton Mountain Wind LLC | Canton, ME | ISO New England (ISNE) | 56.4 GWh | Oct 2017 | Dec 2025 | Wind |
| Hancock Wind Plant | Onward Energy | T22 MD, ME | ISO New England (ISNE) | 112.5 GWh | Nov 2016 | May 2026 | Wind |
| Passadumkeag Windpark LLC | Southern Power Co | Greenbush, ME | ISO New England (ISNE) | 137.9 GWh | Jun 2016 | May 2026 | Wind |
| Stillwater B | Brookfield Black Bear Hydro, LLC | Old Town, ME | ISO New England (ISNE) | 9.4 GWh | Aug 2013 | Dec 2025 | Water |
| Orono B | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 17.2 GWh | Oct 2013 | Dec 2025 | Water |
| Pisgah Mountain Wind | Pisgah Mountain, LLC | Clifton, ME | ISO New England (ISNE) | 28.3 GWh | Nov 2016 | Dec 2025 | Wind |
| Athens Energy | Athens Energy, LLC | Athens, ME | ISO New England (ISNE) | 56.3 GWh | Sep 2016 | Dec 2025 | Wood/Wood Waste Solids |
| Solar Mule, LLC | Solar Mule, LLC | Oakland, ME | ISO New England (ISNE) | 2.0 GWh | Aug 2017 | Dec 2024 | Solar |
| IOS - MEW Phase 1 | Madison Energy Holdings LLC | Madison, ME | ISO New England (ISNE) | 1.0 GWh | Dec 2016 | Dec 2024 | Solar |
| RoxWind | RoxWind LLC | Roxbury, ME | ISO New England (ISNE) | 44.1 GWh | Oct 2021 | Dec 2025 | Wind |
| Weaver Wind | Greenbacker Renewable Energy Corporation | Township 16, ME | ISO New England (ISNE) | 213.9 GWh | Nov 2020 | May 2026 | Wind |
| Samoset Solar | Samoset Solar, LLC | Rockport, ME | ISO New England (ISNE) | 3.9 GWh | Jun 2023 | Dec 2025 | Solar |
| Sanford Solar | Sanford Airport Solar, LLC | Sanford, ME | ISO New England (ISNE) | 87.3 GWh | Oct 2020 | May 2026 | Solar |
Browse Power Plants By Maine Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Cumberland County, ME | # 1 | 25 | 4.1 TWh |
| Penobscot County, ME | # 2 | 47 | 2.6 TWh |
| Oxford County, ME | # 3 | 21 | 1.7 TWh |
| Somerset County, ME | # 4 | 37 | 1.6 TWh |
| Washington County, ME | # 5 | 9 | 954.6 GWh |
| Androscoggin County, ME | # 6 | 31 | 764.6 GWh |
| Franklin County, ME | # 7 | 17 | 756.9 GWh |
| Aroostook County, ME | # 8 | 32 | 675.2 GWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 4 | 505.6 GWh |
| Hancock County, ME | # 10 | 16 | 483.5 GWh |
| York County, ME | # 11 | 25 | 299.8 GWh |
| Waldo County, ME | # 12 | 9 | 285.2 GWh |
| Kennebec County, ME | # 13 | 28 | 209.1 GWh |
| Sagadahoc County, ME | # 14 | 5 | 65.0 GWh |
| Knox County, ME | # 15 | 5 | 22.2 GWh |
| Lincoln County, ME | # 16 | 4 | 21.0 GWh |