Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| ME-EDFR-Phase I-Woolwich | Green Mile Solar, LLC | Woolwich, ME | ISO New England (ISNE) | 1.5 GWh | Aug 2023 | Dec 2023 | Solar |
| Messalonskee 5 | Messalonskee Stream Hydro LLC | Waterville, ME | ISO New England (ISNE) | 5.1 GWh | Dec 1934 | Dec 2023 | Water |
| Maine Independence Station | Casco Bay Energy Co LLC | Veazie, ME | ISO New England (ISNE) | 936.9 GWh | Apr 2000 | Dec 2023 | Natural Gas |
| ME Novel Lighthouse - Front St. Solar CSG | Luminace Sunbeam Development Holdings, LLC | Skowhegan, ME | ISO New England (ISNE) | 1.4 GWh | Apr 2023 | Dec 2023 | Solar |
| Mainely Solar (Wyman Hill Solar LLC) | Wyman Hill Solar, LLC | Rumford, ME | ISO New England (ISNE) | 3.9 GWh | Nov 2022 | Dec 2023 | Solar |
| Messalonskee 2 (Oakland) | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 12.9 GWh | Dec 1923 | Dec 2023 | Water |
| Messalonskee 3 | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 7.3 GWh | Dec 1917 | Dec 2023 | Water |
| Monmouth | Maine DG Solar Monmouth, LLC | Monmouth, ME | ISO New England (ISNE) | 8.2 GWh | Feb 2022 | Dec 2023 | Solar |
| Milo PV - BD Solar 1 LLC | BD Solar 1 LLC | Milo, ME | ISO New England (ISNE) | 25.2 GWh | May 2021 | Dec 2023 | Solar |
| Milo CSG | Milo CSG, LLC | Milo, ME | ISO New England (ISNE) | 6.0 GWh | Jan 2022 | Dec 2023 | Solar |
| Milford Hydro Station | Brookfield Black Bear Hydro, LLC | Milford, ME | ISO New England (ISNE) | 53.0 GWh | Jun 1941 | Dec 2023 | Water |
| Medway Hydro | Brookfield Black Bear Hydro, LLC | Medway, ME | ISO New England (ISNE) | 27.5 GWh | Dec 1922 | Dec 2023 | Water |
| Mechanic Falls | KEI (Maine) Power Management (IV) LLC | Mechanic Falls, ME | ISO New England (ISNE) | 3.0 GWh | Mar 1986 | Dec 2023 | Water |
| Mars Hill Wind Farm Project | Evergreen Wind, LLC | Mars Hill, ME | (NBSO) | 104.8 GWh | Feb 2007 | Dec 2023 | Wind |
| Merrill Road Solar | NextGrid Mangrove, LLC | Lewiston, ME | ISO New England (ISNE) | 5.6 GWh | Feb 2022 | Dec 2023 | Solar |
| MEVS DOT 109 | MEVS DOT, LLC | Augusta, ME | ISO New England (ISNE) | 1.4 GWh | Jun 2023 | Dec 2023 | Solar |
| MMWAC Resource Recovery Facility | Maine Waste to Energy | Auburn, ME | ISO New England (ISNE) | 10.9 GWh | May 1992 | Aug 2024 | Non-biogenic Municipal Solid Waste : 54.3% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.2% |
Browse Power Plants By Maine Counties
Figures are based on December 2023 generation numbers.| County | State Rank | Active Plants | Dec 2023 Generation |
|---|---|---|---|
| Lincoln County, ME | # 16 | 3 | 2.5 GWh |
| Knox County, ME | # 15 | 5 | 17.4 GWh |
| Sagadahoc County, ME | # 14 | 4 | 72.1 GWh |
| Waldo County, ME | # 13 | 6 | 106.3 GWh |
| Kennebec County, ME | # 12 | 24 | 214.5 GWh |
| York County, ME | # 11 | 19 | 325.7 GWh |
| Hancock County, ME | # 10 | 13 | 449.3 GWh |
| Piscataquis County, ME | # 9 | 4 | 457.9 GWh |
| County | State Rank | Active Plants | Dec 2023 Generation |
|---|---|---|---|
| Washington County, ME | # 8 | 7 | 518.9 GWh |
| Aroostook County, ME | # 7 | 26 | 537.7 GWh |
| Androscoggin County, ME | # 6 | 28 | 801.0 GWh |
| Franklin County, ME | # 5 | 16 | 827.3 GWh |
| Oxford County, ME | # 4 | 18 | 1.4 TWh |
| Somerset County, ME | # 3 | 35 | 1.8 TWh |
| Penobscot County, ME | # 2 | 43 | 2.4 TWh |
| Cumberland County, ME | # 1 | 20 | 3.4 TWh |