Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Treasure Lane Solar 1 | AES Clean Energy | Manchester, ME | ISO New England (ISNE) | 7.0 GWh | Apr 2023 | Dec 2024 | Solar |
| Town House | Nautilus Solar Solutions | Chelsea, ME | ISO New England (ISNE) | 8.2 GWh | Nov 2022 | Dec 2024 | Solar |
| Three Corners Solar | Three Corners Solar, LLC | Unity, ME | ISO New England (ISNE) | 186.1 GWh | Jun 2024 | Feb 2026 | Solar |
| Twin Rivers Paper Co LLC | Twin Rivers Paper Co LLC | Madawaska, ME | (NBSO) | 99.9 GWh | Apr 1987 | Feb 2026 | Purchased Steam |
Browse Power Plants By Maine Counties
Figures are based on February 2026 generation numbers.| County | State Rank | Active Plants | Feb 2026 Generation |
|---|---|---|---|
| Cumberland County, ME | # 1 | 22 | 4.2 TWh |
| Penobscot County, ME | # 2 | 47 | 3.8 TWh |
| Oxford County, ME | # 3 | 21 | 1.6 TWh |
| Somerset County, ME | # 4 | 36 | 1.6 TWh |
| Washington County, ME | # 5 | 9 | 881.0 GWh |
| Androscoggin County, ME | # 6 | 29 | 757.0 GWh |
| Franklin County, ME | # 7 | 16 | 718.2 GWh |
| Aroostook County, ME | # 8 | 32 | 601.7 GWh |
| County | State Rank | Active Plants | Feb 2026 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 4 | 518.8 GWh |
| Hancock County, ME | # 10 | 14 | 472.3 GWh |
| Waldo County, ME | # 11 | 9 | 269.0 GWh |
| York County, ME | # 12 | 22 | 260.4 GWh |
| Kennebec County, ME | # 13 | 27 | 198.0 GWh |
| Sagadahoc County, ME | # 14 | 5 | 63.5 GWh |
| Knox County, ME | # 15 | 5 | 22.0 GWh |
| Lincoln County, ME | # 16 | 4 | 18.4 GWh |