Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Oakfield Wind Project | Onward Energy | City of Oakfield, ME | ISO New England (ISNE) | 354.9 GWh | Sep 2015 | Mar 2025 | Wind |
| Otis Hydro | Eagle Creek Renewable Energy, LLC | Livermore Falls, ME | ISO New England (ISNE) | 31.8 GWh | Dec 1984 | Mar 2025 | Water |
| Orono B | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 21.3 GWh | Oct 2013 | Dec 2024 | Water |
| Oxford PV - BD Solar Oxford LLC | BD Solar Oxford LLC | Oxford, ME | ISO New England (ISNE) | 14.7 GWh | May 2021 | Dec 2024 | Solar |
| Oakland | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 9.0 GWh | Aug 2022 | Dec 2024 | Solar |
| Orono Hydro Station | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 5.8 GWh | Dec 2008 | Dec 2024 | Water |
Browse Power Plants By Maine Counties
Figures are based on March 2025 generation numbers.| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Penobscot County, ME | # 1 | 44 | 3.8 TWh |
| Cumberland County, ME | # 2 | 21 | 3.4 TWh |
| Oxford County, ME | # 3 | 20 | 1.7 TWh |
| Somerset County, ME | # 4 | 36 | 1.5 TWh |
| Franklin County, ME | # 5 | 16 | 762.5 GWh |
| Androscoggin County, ME | # 6 | 28 | 758.3 GWh |
| Aroostook County, ME | # 7 | 32 | 617.9 GWh |
| Washington County, ME | # 8 | 9 | 568.2 GWh |
| County | State Rank | Active Plants | Mar 2025 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 6 | 523.2 GWh |
| Hancock County, ME | # 10 | 14 | 465.2 GWh |
| York County, ME | # 11 | 22 | 261.5 GWh |
| Waldo County, ME | # 12 | 9 | 204.0 GWh |
| Kennebec County, ME | # 13 | 27 | 189.9 GWh |
| Sagadahoc County, ME | # 14 | 5 | 63.5 GWh |
| Knox County, ME | # 15 | 5 | 21.4 GWh |
| Lincoln County, ME | # 16 | 4 | 18.4 GWh |