Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Acton | Acton H Road Solar 1, LLC | Acton, ME | ISO New England (ISNE) | 4.7 GWh | Nov 2021 | Dec 2025 | Solar |
| AES Daigle Solar, LLC | AES Clean Energy | Fort Kent, ME | (NBSO) | 6.4 GWh | Apr 2023 | Dec 2025 | Solar |
| AES Pelletier Solar, LLC | AES Clean Energy | Fort Kent, ME | (NBSO) | 4.8 GWh | Apr 2023 | Dec 2025 | Solar |
| Anson Abenaki Hydros | Eagle Creek Renewable Energy, LLC | Madison, ME | ISO New England (ISNE) | 100.6 GWh | Dec 1949 | Dec 2025 | Water |
| Arctaris Saddleback Solar | Arctaris Saddleback Solar, LLC | Dallas Plantation, ME | ISO New England (ISNE) | 7.4 GWh | Oct 2023 | Dec 2025 | Solar |
| Athens AT01 | Nautilus Solar Solutions | Athens, ME | ISO New England (ISNE) | 7.1 GWh | May 2022 | Dec 2025 | Solar |
| Athens Energy | Athens Energy, LLC | Athens, ME | ISO New England (ISNE) | 56.3 GWh | Sep 2016 | Dec 2025 | Wood/Wood Waste Solids |
| Athens Ridge | Greenbacker Renewable Energy Corporation | Athens, ME | ISO New England (ISNE) | 4.7 GWh | Feb 2024 | Dec 2025 | Solar |
| Augusta | Maine DG Solar Augusta, LLC | Augusta, ME | ISO New England (ISNE) | 4.8 GWh | Feb 2022 | Dec 2025 | Solar |
| Augusta PV - BD Solar Augusta LLC | BD Solar Augusta LLC | Augusta, ME | ISO New England (ISNE) | 9.3 GWh | May 2021 | Dec 2025 | Solar |
| Augusta Road Bowdoin Solar, LLC | REA Investments, LLC | Bowdoin, ME | ISO New England (ISNE) | 4.8 GWh | Jan 2022 | Dec 2025 | Solar |
| Aziscohos Hydroelectric Project | Brookfield White Pine Hydro LLC | Wilson Mills, ME | ISO New England (ISNE) | 29.8 GWh | May 1988 | Dec 2025 | Water |
| Baldwin (ME) | Maine DG Solar Baldwin, LLC | West Baldwin, ME | ISO New England (ISNE) | 9.6 GWh | Feb 2022 | Dec 2025 | Solar |
| Barefoot Solar | Madison Energy Investments LLC | Fairfield, ME | ISO New England (ISNE) | 6.3 GWh | Nov 2022 | Dec 2025 | Solar |
| Barker Lower | KEI (Maine) Power Management (III) LLC | Auburn, ME | ISO New England (ISNE) | 3.8 GWh | Mar 1986 | Dec 2025 | Water |
| Bates College Skowhegan | Westbound Solar 3, LLC | Skowhegan, ME | ISO New England (ISNE) | 8.4 GWh | Aug 2023 | Dec 2025 | Solar |
| BD Solar Ellsworth LLC | BD Solar Hancock North LLC | Augusta, ME | ISO New England (ISNE) | 9.0 GWh | May 2022 | Dec 2025 | Solar |
| BD Solar Hancock LLC | BD Solar Hancock LLC | Augusta, ME | ISO New England (ISNE) | 11.3 GWh | May 2022 | Dec 2025 | Solar |
| Beaver Ridge Wind | CPV Beaver Ridge Wind LLC | Freedom, ME | ISO New England (ISNE) | 10.9 GWh | Oct 2008 | Dec 2025 | Wind |
| Benton Falls Associates | Essex Hydro Associates LLC | Benton, ME | ISO New England (ISNE) | 9.9 GWh | Nov 1987 | Dec 2025 | Water |
| Berwick Hubbard Solar 1 | Berwick Hubbard Solar 1, LLC | Berwick, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2024 | Dec 2025 | Solar |
| Bingham Wind | Onward Energy | Bingham, ME | ISO New England (ISNE) | 474.3 GWh | Nov 2016 | May 2026 | Wind |
| BNRG Masardis (CSG) | Nautilus Solar Solutions | Masardis, ME | ISO New England (ISNE) | 4.5 GWh | Nov 2024 | Dec 2025 | Solar |
| BNRG Norridgewock (CSG) | Nautilus Solar Solutions | Norridgewock, ME | ISO New England (ISNE) | 3.3 GWh | Oct 2024 | Dec 2025 | Solar |
| BNRG North Anson (CSG) | Nautilus Solar Solutions | North Anson, ME | ISO New England (ISNE) | 3.2 GWh | Oct 2024 | Dec 2025 | Solar |
| Bonny Eagle | Brookfield White Pine Hydro LLC | Hollis, ME | ISO New England (ISNE) | 31.3 GWh | Dec 1909 | Dec 2025 | Water |
| Brassua Hydroelectric Project | Brassua Hydroelectric LP | Rockwood, ME | ISO New England (ISNE) | 12.6 GWh | Aug 1989 | Aug 2025 | Water |
| Brewer (CSG) | Nautilus Solar Solutions | Brewer, ME | ISO New England (ISNE) | 7.0 GWh | Jul 2024 | Dec 2025 | Solar |
| BRNG Nicolin (CSG) | Nautilus Solar Solutions | Ellsworth, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2024 | Dec 2025 | Solar |
| Broadhead | Madison Energy Investments LLC | Waterville, ME | ISO New England (ISNE) | 7.2 GWh | Feb 2023 | Dec 2025 | Solar |
| Broadway Solar (CSG) | NextGrid Bitterbush, LLC | Bangor, ME | ISO New England (ISNE) | 6.3 GWh | Aug 2023 | Dec 2025 | Solar |
| Brunswick Hydro | Brookfield White Pine Hydro LLC | Brunswick, ME | ISO New England (ISNE) | 69.6 GWh | Feb 1982 | Dec 2025 | Water |
| Bucksport Generation LLC | Bucksport Generation LLC | Bucksport, ME | ISO New England (ISNE) | 28.8 GWh | Jun 1965 | May 2026 | Natural Gas : 57.8% Distillate Fuel Oil : 42.2% |
| Bull Hill Wind Project | Evergreen Wind, LLC | Eastbrook, ME | ISO New England (ISNE) | 66.5 GWh | Sep 2012 | Dec 2025 | Wind |
| BWC Beech Ridge Brook, LLC | Navisun LLC | Scarborough, ME | ISO New England (ISNE) | 7.7 GWh | Apr 2023 | Dec 2025 | Solar |
| BWC Jimmie Pond | Navisun LLC | Hampden, ME | ISO New England (ISNE) | 3.3 GWh | Nov 2024 | Dec 2025 | Solar |
| BWC Maces Pond LLC | Navisun LLC | Rockport, ME | ISO New England (ISNE) | 4.5 GWh | Nov 2021 | Dec 2025 | Solar |
| BWC Unity Pond LLC | Navisun LLC | Benton, ME | ISO New England (ISNE) | 7.4 GWh | Nov 2023 | Dec 2025 | Solar |
| Canton GLC Solar, LLC | REA Investments, LLC | Canton, ME | ISO New England (ISNE) | 4.7 GWh | Mar 2024 | 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 |
| Cape Gas Turbine | FPL Energy Cape LLC | Portland, ME | ISO New England (ISNE) | 752.0 MWh | Dec 1969 | Dec 2025 | Distillate Fuel Oil |
| Caribou | Altus Power America Management, LLC | Caribou, ME | ISO New England (ISNE) | 6.2 GWh | Jul 2023 | Dec 2025 | Solar |
| Caribou Solar | SoCore Energy LLC | Caribou, ME | ISO New England (ISNE) | 6.2 GWh | Nov 2024 | Dec 2025 | Solar |
| Cataract Hydro | Brookfield White Pine Hydro LLC | Saco, ME | ISO New England (ISNE) | 23.1 GWh | Dec 1936 | Dec 2025 | Water |
| Caterpillar Hill | AES Clean Energy | Sedgwick, ME | ISO New England (ISNE) | 8.9 GWh | Nov 2023 | Dec 2025 | Solar |
| Cenergy - Kiger | Luminace Sunbeam Development Holdings, LLC | Embden, ME | ISO New England (ISNE) | 2.0 GWh | Nov 2023 | Dec 2025 | Solar |
| Cenergy - Pulk | BAP Grounded 2 LLC | Sabattus, ME | ISO New England (ISNE) | 7.6 GWh | Nov 2024 | Dec 2025 | Solar |
| Cenergy - Richards (CSG) | Luminace Sunbeam Development Holdings, LLC | Fairfield, ME | ISO New England (ISNE) | 2.1 GWh | Sep 2023 | Dec 2025 | Solar |
| Cenergy - Waterville (CSG) | Luminace Sunbeam Development Holdings, LLC | Waterville, ME | ISO New England (ISNE) | 8.8 GWh | Jun 2023 | Dec 2025 | Solar |
| Cenergy - Wiscasset (CSG) | Luminace Sunbeam Development Holdings, LLC | Wiscasset, ME | ISO New England (ISNE) | 8.4 GWh | Jun 2023 | 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 |
| Church Hill Road Augusta Solar, LLC | REA Investments, LLC | Augusta, ME | ISO New England (ISNE) | 6.5 GWh | Jan 2022 | Dec 2025 | Solar |
| Corkwood Solar (CSG) | NextGrid Corkwood, LLC | Howland, ME | ISO New England (ISNE) | 5.8 GWh | Oct 2023 | Dec 2025 | Solar |
| Dairy Farm | Greenbacker Renewable Energy Corporation | Anson, ME | ISO New England (ISNE) | 6.1 GWh | Sep 2024 | Dec 2025 | Solar |
| Deer Rips | Brookfield White Pine Hydro LLC | Auburn, ME | ISO New England (ISNE) | 50.8 GWh | Dec 1902 | Dec 2025 | Water |
| Downeast Wind | Downeast Wind, LLC | Columbia, ME | ISO New England (ISNE) | 364.0 GWh | Dec 2024 | May 2026 | Wind |
| Dynamic Corinth (CSG) | MN8 Energy LLC | Corinth, ME | ISO New England (ISNE) | 9.8 GWh | Sep 2022 | Dec 2025 | Solar |
| Dynamic - Enfield Hammett Road CSG | Altus Power America Management, LLC | Enfield, ME | ISO New England (ISNE) | 8.6 GWh | Aug 2024 | Dec 2025 | Solar |
| Dynamic - Exeter Solar CSG | Altus Power America Management, LLC | Exeter, ME | ISO New England (ISNE) | 6.3 GWh | Aug 2024 | Dec 2025 | Solar |
| Dynamic - Glenburn Broadway One (CSG) | Altus Power America Management, LLC | Glenburn, ME | ISO New England (ISNE) | 6.2 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic - Gray Solar | Altus Power America Management, LLC | Gray, ME | ISO New England (ISNE) | 5.2 GWh | Nov 2024 | Dec 2025 | Solar |
| Dynamic - Leeds Solar (CSG) | Nautilus Solar Solutions | Leeds, ME | ISO New England (ISNE) | 8.8 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic Madison (CSG) | MN8 Energy LLC | Madison, ME | ISO New England (ISNE) | 9.5 GWh | Jul 2022 | Dec 2025 | Solar |
| Dynamic - Norridgewock Martin Stream (CSG) | Nautilus Solar Solutions | Norridgewock, ME | ISO New England (ISNE) | 8.8 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic - Wales Leeds Junction Road (CSG) | Altus Power America Management, LLC | Wales, ME | ISO New England (ISNE) | 6.7 GWh | Oct 2024 | Dec 2025 | Solar |
| Eastern Maine Medical Center | Eastern Maine Medical Center | Bangor, ME | ISO New England (ISNE) | 27.6 GWh | Sep 2006 | May 2026 | Natural Gas |
| Easton CSG 1 LLC | Easton CSG 1 LLC | Easton, ME | ISO New England (ISNE) | 5.6 GWh | Jan 2024 | Dec 2025 | Solar |
| Ellsworth Hydro Station | Brookfield Black Bear Hydro, LLC | Ellsworth, ME | ISO New England (ISNE) | 18.3 GWh | Jun 1924 | Dec 2025 | Water |
| Fairfield PV - BD Solar Fairfield LLC | BD Solar Fairfield LLC | Fairfield, ME | ISO New England (ISNE) | 8.7 GWh | May 2021 | Dec 2025 | Solar |
| Farmingdale FA01 | Nautilus Solar Solutions | Farmingdale, ME | ISO New England (ISNE) | 8.0 GWh | May 2022 | Dec 2025 | Solar |
| Farmington | Madison Energy Investments LLC | Farmington, ME | ISO New England (ISNE) | 7.3 GWh | Nov 2023 | Dec 2025 | Solar |
| Farmington Solar | Farmington Solar, LLC | Farmington, ME | ISO New England (ISNE) | 124.6 GWh | Sep 2021 | May 2026 | Solar |
| Fort Fairfield | Standard Solar | Fort Fairfield, ME | ISO New England (ISNE) | 8.1 GWh | Jul 2023 | Dec 2025 | Solar |
| Fox Island Wind LLC | Fox Island Wind LLC | Vinalhaven, ME | ISO New England (ISNE) | 8.7 GWh | Oct 2009 | Dec 2025 | Wind |
| French Road Solar | SoCore Energy LLC | Ashland, ME | ISO New England (ISNE) | 3.1 GWh | Nov 2024 | Dec 2025 | Solar |
| Fryeburg | Nautilus Solar Solutions | Fryeburg, ME | ISO New England (ISNE) | 9.3 GWh | Apr 2023 | Dec 2025 | Solar |
| Gardiner | KEI (Maine) Power Management (III) LLC | Gardiner, ME | ISO New England (ISNE) | 4.1 GWh | Jun 1985 | Jun 2025 | Water |
| Georges River Energy | Robbins Lumber Inc | Searsmont, ME | ISO New England (ISNE) | 51.9 GWh | Nov 2018 | Dec 2024 | Wood/Wood Waste Solids |
| Gorham Solar 1 (CSG) | CleanCapital Holdings | Gorham, ME | ISO New England (ISNE) | 6.6 GWh | Oct 2023 | Dec 2025 | Solar |
| Great Lakes Hydro America - ME | Great Lakes Hydro America LLC | Millinocket, ME | ISO New England (ISNE) | 500.1 GWh | Jun 1917 | 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) | 112.5 GWh | Nov 2016 | May 2026 | Wind |
| Harmony Solar (ME) | Maine DG Solar Harmony, LLC | Harmony, ME | ISO New England (ISNE) | 9.0 GWh | Jul 2022 | Dec 2025 | Solar |
| Harris Hydro | Brookfield White Pine Hydro LLC | West Forks, ME | ISO New England (ISNE) | 150.9 GWh | Dec 1953 | Dec 2025 | Water |
| Hartland Solar | Madison Energy Holdings LLC | Hartland, ME | ISO New England (ISNE) | 6.5 GWh | Nov 2021 | Dec 2025 | Solar |
| Hiram | Brookfield White Pine Hydro LLC | Hiram, ME | ISO New England (ISNE) | 31.3 GWh | Dec 1916 | Dec 2025 | Water |
| Houlton Road Solar Farm (CSG) | REA Investments, LLC | Fort Fairfield, ME | ISO New England (ISNE) | 2.3 GWh | Nov 2024 | Dec 2025 | Solar |
| Hydro Kennebec Project | Hydro Kennebec LLC | Winslow, ME | ISO New England (ISNE) | 36.8 GWh | Dec 1988 | Nov 2025 | Water |
| International Paper Jay Hydro | Eagle Creek Renewable Energy, LLC | Jay, ME | ISO New England (ISNE) | 11.7 GWh | Dec 1911 | Dec 2025 | Water |
| International Paper Livermore Hydro | Eagle Creek Renewable Energy, LLC | Livermore Falls, ME | ISO New England (ISNE) | 24.2 GWh | Dec 1909 | Dec 2025 | Water |
| International Paper Riley Hydro | Eagle Creek Renewable Energy, LLC | Jay, ME | ISO New England (ISNE) | 19.7 GWh | Nov 1981 | Dec 2025 | Water |
| IOS - MEW Phase 1 | Madison Energy Holdings LLC | Madison, ME | ISO New England (ISNE) | 1.0 GWh | Dec 2016 | Dec 2024 | Solar |
| ISM Solar Shepherd Acres | Navisun LLC | South Paris, ME | ISO New England (ISNE) | 4.5 GWh | Nov 2024 | Dec 2025 | Solar |
| Kibby Wind Facility | Helix Maine Wind Development, LLC | Chain of Ponds, ME | ISO New England (ISNE) | 242.1 GWh | Sep 2009 | May 2026 | Wind |
| Lebanon CSG LLC | Dimension Energy LLC | Lebanon, ME | ISO New England (ISNE) | 6.2 GWh | Nov 2024 | Dec 2025 | Solar |
| Lebanon West Lebanon Solar 1 | Lebanon West Lebanon Solar 1, LLC | Lebanon, ME | ISO New England (ISNE) | 3.5 GWh | Nov 2024 | Dec 2025 | Solar |
| Lewiston Junction Road Solar | NextGrid Peppertree, LLC | Poland, ME | ISO New England (ISNE) | 6.8 GWh | Dec 2021 | Dec 2025 | Solar |
| 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 |
| Lisbon Street Solar | NextGrid Cliffrose, LLC | Lewiston, ME | ISO New England (ISNE) | 2.7 GWh | Mar 2022 | Dec 2025 | 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 |