Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Gardiner | KEI (Maine) Power Management (III) LLC | Gardiner, ME | ISO New England (ISNE) | 4.9 GWh | Jun 1985 | Dec 2022 | Water |
| Georges River Energy | Robbins Lumber Inc | Searsmont, ME | ISO New England (ISNE) | 39.0 GWh | Nov 2018 | Dec 2022 | Wood/Wood Waste Solids |
| Great Lakes Hydro America - ME | Great Lakes Hydro America LLC | Millinocket, ME | ISO New England (ISNE) | 594.2 GWh | Jun 1917 | Dec 2022 | Water |
| Gulf Island | Brookfield White Pine Hydro LLC | Lewiston, ME | ISO New England (ISNE) | 136.8 GWh | Dec 1925 | Dec 2022 | Water |
Browse Power Plants By Maine Counties
Figures are based on March 2024 generation numbers.| County | State Rank | Active Plants | Mar 2024 Generation |
|---|---|---|---|
| Androscoggin County, ME | # 6 | 23 | 806.6 GWh |
| Aroostook County, ME | # 8 | 18 | 618.3 GWh |
| Cumberland County, ME | # 1 | 16 | 3.2 TWh |
| Franklin County, ME | # 5 | 13 | 1.4 TWh |
| Hancock County, ME | # 10 | 11 | 520.0 GWh |
| Kennebec County, ME | # 12 | 19 | 144.3 GWh |
| Knox County, ME | # 15 | 4 | 14.2 GWh |
| Oxford County, ME | # 4 | 14 | 1.5 TWh |
| County | State Rank | Active Plants | Mar 2024 Generation |
|---|---|---|---|
| Penobscot County, ME | # 2 | 34 | 2.1 TWh |
| Piscataquis County, ME | # 9 | 4 | 537.8 GWh |
| Sagadahoc County, ME | # 13 | 3 | 66.3 GWh |
| Somerset County, ME | # 3 | 27 | 1.7 TWh |
| Waldo County, ME | # 14 | 5 | 56.5 GWh |
| Washington County, ME | # 7 | 7 | 650.1 GWh |
| York County, ME | # 11 | 15 | 285.3 GWh |