Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Three Corners Solar | Three Corners Solar, LLC | Unity, ME | ISO New England (ISNE) | 133.1 GWh | Jun 2024 | Mar 2025 | Solar |
| Twin Rivers Paper Co LLC | Twin Rivers Paper Co LLC | Madawaska, ME | (NBSO) | 103.6 GWh | Apr 1987 | Mar 2025 | Purchased Steam |
| Town House | Nautilus Solar Solutions | Chelsea, ME | ISO New England (ISNE) | 8.2 GWh | Nov 2022 | Dec 2024 | Solar |
| Treasure Lane Solar 1 | AES Clean Energy | Manchester, ME | ISO New England (ISNE) | 7.0 GWh | Apr 2023 | Dec 2024 | Solar |
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 |