Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Bates College Skowhegan | Westbound Solar 3, LLC | Skowhegan, ME | ISO New England (ISNE) | 8.4 GWh | Aug 2023 | Dec 2025 | Solar |
| Wymans Deblois | REC RWD, LLC | Deblois, ME | (NBSO) | 7.8 GWh | Sep 2024 | Dec 2025 | Solar |
| ME CDG 004 | ME CDG 004 LLC | Bangor, ME | ISO New England (ISNE) | 3.0 GWh | Nov 2024 | Dec 2025 | Solar |
| ME CDG 005 | ME CDG 005 LLC | Veazie, ME | ISO New England (ISNE) | 2.8 GWh | Nov 2024 | Dec 2025 | Solar |
| ME - EDF - Phase II - Belfast | Shining Solar Partners, LLC | Belfast, ME | ISO New England (ISNE) | 7.5 GWh | Aug 2024 | Dec 2025 | Solar |
| MD - EDFR - Phase II - Lewiston | Hayworth Solar Partners, LLC | Lewiston, ME | ISO New England (ISNE) | 7.7 GWh | Oct 2024 | Dec 2025 | Solar |
| SP-231 Clifton | Madison Energy Investments LLC | Clifton, ME | ISO New England (ISNE) | 5.4 GWh | Nov 2024 | Dec 2025 | Solar |
| Roosevelt Trail | Madison Energy Investments LLC | Windham, ME | ISO New England (ISNE) | 1.4 GWh | Nov 2024 | Dec 2025 | Solar |
| SP-339 Mechanic Falls | Madison Energy Investments LLC | Mechanic Falls, ME | ISO New England (ISNE) | 1.4 GWh | Nov 2024 | Dec 2025 | Solar |
| Penobscot Narrows Solar I | Penobscot Narrows Solar I LLC | Bucksport, ME | ISO New England (ISNE) | 7.2 GWh | May 2024 | Dec 2025 | Solar |
| MEVS Clark LLC | MEVS Clark LLC | Bingham, ME | ISO New England (ISNE) | 6.4 GWh | Sep 2023 | Dec 2025 | Solar |
| Broadhead | Madison Energy Investments LLC | Waterville, ME | ISO New England (ISNE) | 7.2 GWh | Feb 2023 | Dec 2025 | Solar |
| MEVS Waterhouse | MEVS LLC | Scarborogh, ME | ISO New England (ISNE) | 3.1 GWh | Nov 2024 | Dec 2025 | Solar |
| Lebanon West Lebanon Solar 1 | Lebanon West Lebanon Solar 1, LLC | Lebanon, ME | ISO New England (ISNE) | 3.5 GWh | Nov 2024 | Dec 2025 | Solar |
| Berwick Hubbard Solar 1 | Berwick Hubbard Solar 1, LLC | Berwick, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2024 | Dec 2025 | Solar |
| William F Wyman Hybrid | FPL Energy Wyman LLC | Yarmouth, ME | ISO New England (ISNE) | 325.3 GWh | Dec 1956 | Jun 2026 | Residual Fuel Oil : 99.6% |
| Rumford Cogeneration | ND Paper, Inc. | Rumford, ME | ISO New England (ISNE) | 396.8 GWh | Dec 1989 | Jun 2026 | Black Liquor : 54.4% Tire-derived Fuels : 20.7% Wood/Wood Waste Solids : 16.4% Bituminous Coal : 6.1% Residual Fuel Oil : 1.1% Natural Gas : 0.7% Sludge Waste : 0.6% |
| MMWAC Resource Recovery Facility | Maine Waste to Energy | Auburn, ME | ISO New England (ISNE) | 7.4 GWh | May 1992 | Jun 2026 | Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.9% |
| Otis Hydro | Eagle Creek Renewable Energy, LLC | Livermore Falls, ME | ISO New England (ISNE) | 40.1 GWh | Dec 1984 | Jun 2026 | Water |
| Regional Waste Systems | Ecomaine | Portland, ME | ISO New England (ISNE) | 87.4 GWh | May 1988 | Jun 2026 | Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.6% |
| Bucksport Generation LLC | Bucksport Generation LLC | Bucksport, ME | ISO New England (ISNE) | 27.3 GWh | Jun 1965 | Jun 2026 | Natural Gas : 55.4% Distillate Fuel Oil : 44.6% |
| Somerset Plant | Sappi Fine Paper North America-Somerset | Skowhegan, ME | ISO New England (ISNE) | 569.7 GWh | Dec 1975 | Jun 2026 | Black Liquor : 46.7% Wood/Wood Waste Solids : 32.3% Natural Gas : 12.9% Tire-derived Fuels : 4.0% Residual Fuel Oil : 3.5% Sludge Waste : 0.5% |
| Westbrook Energy Center Power Plant | Westbrook Energy Center | Westbrook, ME | ISO New England (ISNE) | 3.5 TWh | Apr 2001 | Jun 2026 | Natural Gas |
| Kibby Wind Facility | Helix Maine Wind Development, LLC | Chain of Ponds, ME | ISO New England (ISNE) | 242.0 GWh | Sep 2009 | Jun 2026 | Wind |
| Oakfield Wind Project | Onward Energy | City of Oakfield, ME | ISO New England (ISNE) | 329.4 GWh | Sep 2015 | Jun 2026 | Wind |
| Bingham Wind | Onward Energy | Bingham, ME | ISO New England (ISNE) | 469.8 GWh | Nov 2016 | Jun 2026 | Wind |
| Twin Rivers Paper Co LLC | Twin Rivers Paper Co LLC | Madawaska, ME | (NBSO) | 102.9 GWh | Apr 1987 | Jun 2026 | Purchased Steam |
| Eastern Maine Medical Center | Eastern Maine Medical Center | Bangor, ME | ISO New England (ISNE) | 26.6 GWh | Sep 2006 | Jun 2026 | Natural Gas |
| Hancock Wind Plant | Onward Energy | T22 MD, ME | ISO New England (ISNE) | 112.1 GWh | Nov 2016 | Jun 2026 | Wind |
| Passadumkeag Windpark LLC | Southern Power Co | Greenbush, ME | ISO New England (ISNE) | 135.5 GWh | Jun 2016 | Jun 2026 | Wind |
| Weaver Wind | Greenbacker Renewable Energy Corporation | Township 16, ME | ISO New England (ISNE) | 211.3 GWh | Nov 2020 | Jun 2026 | Wind |
| Sanford Solar | Sanford Airport Solar, LLC | Sanford, ME | ISO New England (ISNE) | 88.7 GWh | Oct 2020 | Jun 2026 | Solar |
| Farmington Solar | Farmington Solar, LLC | Farmington, ME | ISO New England (ISNE) | 125.2 GWh | Sep 2021 | Jun 2026 | Solar |
| Three Corners Solar | Three Corners Solar, LLC | Unity, ME | ISO New England (ISNE) | 194.4 GWh | Jun 2024 | Jun 2026 | Solar |
| Moscow | Greenbacker Renewable Energy Corporation | Moscow, ME | ISO New England (ISNE) | 119.4 GWh | May 2025 | Jun 2026 | Wind |
| Downeast Wind | Downeast Wind, LLC | Columbia, ME | ISO New England (ISNE) | 374.3 GWh | Dec 2024 | Jun 2026 | Wind |
Browse Power Plants By Maine Counties
Figures are based on June 2026 generation numbers.| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Cumberland County, ME | # 1 | 25 | 4.1 TWh |
| Penobscot County, ME | # 2 | 51 | 2.6 TWh |
| Oxford County, ME | # 3 | 24 | 1.7 TWh |
| Somerset County, ME | # 4 | 38 | 1.6 TWh |
| Washington County, ME | # 5 | 10 | 964.8 GWh |
| Androscoggin County, ME | # 6 | 32 | 764.2 GWh |
| Franklin County, ME | # 7 | 18 | 759.6 GWh |
| Aroostook County, ME | # 8 | 33 | 665.0 GWh |
| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 4 | 501.1 GWh |
| Hancock County, ME | # 10 | 16 | 479.0 GWh |
| York County, ME | # 11 | 26 | 301.2 GWh |
| Waldo County, ME | # 12 | 10 | 282.6 GWh |
| Kennebec County, ME | # 13 | 34 | 209.1 GWh |
| Sagadahoc County, ME | # 14 | 5 | 65.0 GWh |
| Knox County, ME | # 15 | 6 | 22.2 GWh |
| Lincoln County, ME | # 16 | 4 | 21.0 GWh |