Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Lockwood Hydroelectric Facility | Merimil Ltd Partnership | Waterville, ME | ISO New England (ISNE) | 13.6 GWh | Sep 1985 | Dec 2024 | Water |
| Lewiston Junction Road Solar | NextGrid Peppertree, LLC | Poland, ME | ISO New England (ISNE) | 6.9 GWh | Dec 2021 | Dec 2024 | Solar |
| Loring | Altus Power America Management, LLC | Limestone, ME | ISO New England (ISNE) | 6.1 GWh | Apr 2023 | Dec 2024 | Solar |
| Livermore Falls CSG | Livermore Falls CSG, LLC | Livermore Falls, ME | ISO New England (ISNE) | 5.3 GWh | Apr 2022 | Dec 2024 | Solar |
| Lisbon Street Solar | NextGrid Cliffrose, LLC | Lewiston, ME | ISO New England (ISNE) | 3.0 GWh | Mar 2022 | Dec 2024 | Solar |
| Lebanon CSG LLC | Dimension Energy LLC | Lebanon, ME | ISO New England (ISNE) | 64.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Limestone CSG 2 LLC | Limestone CSG 2 LLC | Limestone, ME | ISO New England (ISNE) | 62.0 MWh | Oct 2024 | Dec 2024 | Solar |
| Limestone CSG 1 LLC | Limestone CSG 1 LLC | Limestone, ME | ISO New England (ISNE) | 5.0 MWh | Nov 2024 | 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 |