Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| North Gorham | Brookfield White Pine Hydro LLC | Gorham, ME | ISO New England (ISNE) | 6.5 GWh | Dec 1924 | Dec 2025 | Water |
| NE Renewable Power West Enfield | Stored Solar J&WE | West Enfield, ME | ISO New England (ISNE) | 42.6 GWh | Nov 1987 | Dec 2025 | Wood/Wood Waste Solids |
| Naples | Naples Casco Solar 1, LLC | Naples, ME | ISO New England (ISNE) | 3.0 GWh | Nov 2021 | Dec 2025 | Solar |
| North Bridgton | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.0 GWh | Oct 2022 | Dec 2025 | Solar |
| North Nobleboro Road, LLC | REA Investments, LLC | Waldoboro, ME | ISO New England (ISNE) | 4.0 GWh | May 2021 | Dec 2025 | Solar |
| Nutting Ridge Solar, LLC | REA Investments, LLC | Otisfield, ME | ISO New England (ISNE) | 6.8 GWh | May 2023 | Dec 2025 | Solar |
| NE Renewable Power Jonesboro | Stored Solar J&WE | Jonesboro, ME | ISO New England (ISNE) | 16.0 MWh | Nov 1987 | Jun 2025 | Gaseous Propane : 66.7% Wood/Wood Waste Solids : 33.3% |
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 |