Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Dynamic - Gray Solar | Altus Power America Management, LLC | Gray, ME | ISO New England (ISNE) | 5.2 GWh | Nov 2024 | Dec 2025 | Solar |
| Dairy Farm | Greenbacker Renewable Energy Corporation | Anson, ME | ISO New England (ISNE) | 6.1 GWh | Sep 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 - Exeter Solar CSG | Altus Power America Management, LLC | Exeter, ME | ISO New England (ISNE) | 6.3 GWh | Aug 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 |
| 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 - Leeds Solar (CSG) | Nautilus Solar Solutions | Leeds, ME | ISO New England (ISNE) | 8.8 GWh | Oct 2024 | 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 Madison (CSG) | MN8 Energy LLC | Madison, ME | ISO New England (ISNE) | 9.5 GWh | Jul 2022 | Dec 2025 | Solar |
| Dynamic Corinth (CSG) | MN8 Energy LLC | Corinth, ME | ISO New England (ISNE) | 9.8 GWh | Sep 2022 | 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 |
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 | 5 | 22.2 GWh |
| Sagadahoc County, ME | # 14 | 5 | 65.0 GWh |
| Kennebec County, ME | # 13 | 28 | 209.1 GWh |
| Waldo County, ME | # 12 | 9 | 285.2 GWh |
| York County, ME | # 11 | 25 | 299.8 GWh |
| Hancock County, ME | # 10 | 16 | 483.5 GWh |
| Piscataquis County, ME | # 9 | 4 | 505.6 GWh |
| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Aroostook County, ME | # 8 | 32 | 675.2 GWh |
| Franklin County, ME | # 7 | 17 | 756.9 GWh |
| Androscoggin County, ME | # 6 | 31 | 764.6 GWh |
| Washington County, ME | # 5 | 9 | 954.6 GWh |
| Somerset County, ME | # 4 | 37 | 1.6 TWh |
| Oxford County, ME | # 3 | 21 | 1.7 TWh |
| Penobscot County, ME | # 2 | 47 | 2.6 TWh |
| Cumberland County, ME | # 1 | 25 | 4.1 TWh |