Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Augusta | Maine DG Solar Augusta, LLC | Augusta, ME | ISO New England (ISNE) | 4.7 GWh | Feb 2022 | Dec 2024 | Solar |
| ME Augusta 13 York Farm Rd Solar | SOL ME Augusta 13 York Farm, LLC | Augusta, ME | ISO New England (ISNE) | 1.3 GWh | Dec 2023 | Dec 2024 | Solar |
| Barker Lower | KEI (Maine) Power Management (III) LLC | Auburn, ME | ISO New England (ISNE) | 3.7 GWh | Mar 1986 | Dec 2024 | Water |
| Deer Rips | Brookfield White Pine Hydro LLC | Auburn, ME | ISO New England (ISNE) | 58.2 GWh | Dec 1902 | Dec 2024 | Water |
| 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% |
| Upper Barker | KEI (Maine) Power Management (III) LLC | Auburn, ME | ISO New England (ISNE) | 4.7 GWh | Apr 1987 | Dec 2024 | Water |
| Athens AT01 | Nautilus Solar Solutions | Athens, ME | ISO New England (ISNE) | 6.8 GWh | May 2022 | Dec 2024 | Solar |
| Athens Energy | Athens Energy, LLC | Athens, ME | ISO New England (ISNE) | 58.2 GWh | Sep 2016 | Dec 2024 | Wood/Wood Waste Solids |
| Athens Ridge | Greenbacker Renewable Energy Corporation | Athens, ME | ISO New England (ISNE) | 3.6 GWh | Feb 2024 | Dec 2024 | Solar |
| Dairy Farm | Greenbacker Renewable Energy Corporation | Anson, ME | ISO New England (ISNE) | 542.0 MWh | Sep 2024 | Dec 2024 | Solar |
| Acton | Acton H Road Solar 1, LLC | Acton, ME | ISO New England (ISNE) | 4.6 GWh | Nov 2021 | Dec 2024 | Solar |
Browse Power Plants By Maine Counties
Figures are based on December 2024 generation numbers.| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Lincoln County, ME | # 16 | 4 | 18.4 GWh |
| Knox County, ME | # 15 | 5 | 22.0 GWh |
| Sagadahoc County, ME | # 14 | 5 | 63.5 GWh |
| Kennebec County, ME | # 13 | 27 | 198.0 GWh |
| York County, ME | # 12 | 22 | 262.0 GWh |
| Waldo County, ME | # 11 | 9 | 272.1 GWh |
| Hancock County, ME | # 10 | 14 | 479.2 GWh |
| Piscataquis County, ME | # 9 | 4 | 526.8 GWh |
| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Aroostook County, ME | # 8 | 32 | 625.5 GWh |
| Washington County, ME | # 7 | 9 | 696.9 GWh |
| Franklin County, ME | # 6 | 16 | 750.4 GWh |
| Androscoggin County, ME | # 5 | 29 | 758.2 GWh |
| Somerset County, ME | # 4 | 36 | 1.6 TWh |
| Oxford County, ME | # 3 | 21 | 1.7 TWh |
| Cumberland County, ME | # 2 | 22 | 3.3 TWh |
| Penobscot County, ME | # 1 | 47 | 3.8 TWh |