Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Hartland Solar | Madison Energy Holdings LLC | Hartland, ME | ISO New England (ISNE) | 6.6 GWh | Nov 2021 | Dec 2023 | Solar |
| Harmony Solar | Maine DG Solar Harmony, LLC | Harmony, ME | ISO New England (ISNE) | 9.7 GWh | Jul 2022 | Dec 2023 | Solar |
| Harris Hydro | Brookfield White Pine Hydro LLC | West Forks, ME | ISO New England (ISNE) | 300.3 GWh | Dec 1953 | Dec 2023 | Water |
| Hiram | Brookfield White Pine Hydro LLC | Hiram, ME | ISO New England (ISNE) | 57.8 GWh | Dec 1916 | Dec 2023 | Water |
| Hydro Kennebec Project | Hydro Kennebec LLC | Winslow, ME | ISO New England (ISNE) | 74.6 GWh | Dec 1988 | Dec 2023 | Water |
| Hancock Wind Plant | Onward Energy | T22 MD, ME | ISO New England (ISNE) | 116.6 GWh | Nov 2016 | Jun 2024 | Wind |
Browse Power Plants By Maine Counties
Figures are based on June 2024 generation numbers.| County | State Rank | Active Plants | Jun 2024 Generation |
|---|---|---|---|
| Cumberland County, ME | # 1 | 20 | 3.5 TWh |
| Penobscot County, ME | # 2 | 42 | 2.3 TWh |
| Somerset County, ME | # 3 | 34 | 2.0 TWh |
| Franklin County, ME | # 4 | 16 | 1.3 TWh |
| Oxford County, ME | # 5 | 17 | 1.0 TWh |
| Androscoggin County, ME | # 6 | 28 | 871.8 GWh |
| Washington County, ME | # 7 | 7 | 576.7 GWh |
| Aroostook County, ME | # 8 | 21 | 572.0 GWh |
| County | State Rank | Active Plants | Jun 2024 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 4 | 482.7 GWh |
| Hancock County, ME | # 10 | 13 | 477.1 GWh |
| York County, ME | # 11 | 19 | 353.0 GWh |
| Kennebec County, ME | # 12 | 24 | 224.9 GWh |
| Sagadahoc County, ME | # 13 | 4 | 77.1 GWh |
| Waldo County, ME | # 14 | 6 | 54.8 GWh |
| Knox County, ME | # 15 | 5 | 18.4 GWh |
| Lincoln County, ME | # 16 | 3 | 2.5 GWh |