Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Passadumkeag Windpark LLC | Southern Power Co | Greenbush, ME | ISO New England (ISNE) | 136.2 GWh | Jun 2016 | Mar 2026 | Wind |
| Weaver Wind | Weaver Wind, LLC (Longroad) | Township 16, ME | ISO New England (ISNE) | 220.7 GWh | Nov 2020 | Mar 2026 | Wind |
| Sanford Solar | Sanford Airport Solar, LLC | Sanford, ME | ISO New England (ISNE) | 85.8 GWh | Oct 2020 | Mar 2026 | Solar |
| Farmington Solar | Farmington Solar, LLC | Farmington, ME | ISO New England (ISNE) | 121.2 GWh | Sep 2021 | Mar 2026 | Solar |
| Three Corners Solar | Three Corners Solar, LLC | Unity, ME | ISO New England (ISNE) | 185.0 GWh | Jun 2024 | Mar 2026 | Solar |
| Moscow | Greenbacker Renewable Energy Corporation | Moscow, ME | ISO New England (ISNE) | 87.1 GWh | - | Mar 2026 | Wind |
| Downeast Wind | Downeast Wind, LLC | Columbia, ME | ISO New England (ISNE) | 344.2 GWh | - | Mar 2026 | Wind |
Browse Power Plants By Maine Counties
Figures are based on March 2026 generation numbers.| County | State Rank | Active Plants | Mar 2026 Generation |
|---|---|---|---|
| Cumberland County, ME | # 1 | 22 | 4.1 TWh |
| Penobscot County, ME | # 2 | 47 | 3.8 TWh |
| Somerset County, ME | # 3 | 36 | 1.6 TWh |
| Oxford County, ME | # 4 | 21 | 1.6 TWh |
| Washington County, ME | # 5 | 9 | 896.3 GWh |
| Androscoggin County, ME | # 6 | 29 | 756.3 GWh |
| Franklin County, ME | # 7 | 16 | 718.4 GWh |
| Aroostook County, ME | # 8 | 32 | 598.2 GWh |
| County | State Rank | Active Plants | Mar 2026 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 4 | 509.1 GWh |
| Hancock County, ME | # 10 | 14 | 474.1 GWh |
| Waldo County, ME | # 11 | 9 | 263.8 GWh |
| York County, ME | # 12 | 22 | 259.7 GWh |
| Kennebec County, ME | # 13 | 27 | 198.0 GWh |
| Sagadahoc County, ME | # 14 | 5 | 63.5 GWh |
| Knox County, ME | # 15 | 5 | 22.0 GWh |
| Lincoln County, ME | # 16 | 4 | 18.4 GWh |