Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Water Street Solar | AES Distributed Energy | Randolph, ME | ISO New England (ISNE) | 7.2 GWh | Nov 2022 | Dec 2025 | Solar |
| Winslow PV - BD Solar 2 LLC | BD Solar 2 LLC | Winslow, ME | ISO New England (ISNE) | 10.3 GWh | Jun 2022 | Dec 2025 | Solar |
| West Enfield Hydro | Brookfield Black Bear Hydro, LLC | West Enfield, ME | ISO New England (ISNE) | 70.2 GWh | Mar 1988 | Dec 2025 | Water |
| West Buxton | Brookfield White Pine Hydro LLC | Buxton, ME | ISO New England (ISNE) | 20.6 GWh | Dec 1903 | Dec 2025 | Water |
| Weston Hydro | Brookfield White Pine Hydro LLC | Skowhegan, ME | ISO New England (ISNE) | 57.0 GWh | Dec 1919 | Dec 2025 | Water |
| Williams Hydro | Brookfield White Pine Hydro LLC | Solon, ME | ISO New England (ISNE) | 63.5 GWh | Dec 1938 | Dec 2025 | Water |
| Wyman Hydro | Brookfield White Pine Hydro LLC | Bingham, ME | ISO New England (ISNE) | 295.2 GWh | Dec 1929 | Dec 2025 | Water |
| Worumbo Hydro Station | Eagle Creek Renewable Energy, LLC | Lisbon Falls, ME | ISO New England (ISNE) | 74.3 GWh | Jan 1989 | Dec 2025 | Water |
| William F Wyman Hybrid | FPL Energy Wyman LLC | Yarmouth, ME | ISO New England (ISNE) | 338.6 GWh | Dec 1956 | May 2026 | Residual Fuel Oil : 99.6% |
| Weaver Wind | Greenbacker Renewable Energy Corporation | Township 16, ME | ISO New England (ISNE) | 213.9 GWh | Nov 2020 | May 2026 | Wind |
| Waterboro | Madison Energy Investments LLC | East Waterboro, ME | ISO New England (ISNE) | 3.3 GWh | Jun 2023 | Dec 2024 | Solar |
| Wells (ME) | Nautilus Solar Solutions | Wells, ME | ISO New England (ISNE) | 8.4 GWh | Jun 2022 | Dec 2025 | Solar |
| Washington WS01 | Nautilus Solar Solutions | Washington, ME | ISO New England (ISNE) | 5.1 GWh | May 2022 | Dec 2025 | Solar |
| Webb Road Solar | NextGrid Mastic, LLC | Waterville, ME | ISO New England (ISNE) | 4.8 GWh | Aug 2022 | Dec 2025 | Solar |
| Wymans Deblois | REC RWD, LLC | Deblois, ME | (NBSO) | 7.8 GWh | Sep 2024 | Dec 2025 | Solar |
| Walden Solar Maine V | Walden Solar Maine V LLC | Leeds, ME | ISO New England (ISNE) | 35.9 GWh | Nov 2024 | Dec 2025 | Solar |
| Westbrook Energy Center Power Plant | Westbrook Energy Center | Westbrook, ME | ISO New England (ISNE) | 3.5 TWh | Apr 2001 | May 2026 | Natural Gas |
| Waste Management Crossroads LFGTE | WM Renewable Energy LLC | Norridgewock, ME | ISO New England (ISNE) | 21.9 GWh | Feb 2009 | Dec 2025 | Landfill Gas |
| Woodland Pulp, LLC | Woodland Pulp LLC | Baileyville, ME | (NBSO) | 381.5 GWh | May 1906 | Dec 2024 | Black Liquor : 50.1% Natural Gas : 29.3% Water : 12.3% Wood/Wood Waste Solids : 8.3% |
Browse Power Plants By Maine Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Cumberland County, ME | # 1 | 25 | 4.1 TWh |
| Penobscot County, ME | # 2 | 47 | 2.6 TWh |
| Oxford County, ME | # 3 | 21 | 1.7 TWh |
| Somerset County, ME | # 4 | 37 | 1.6 TWh |
| Washington County, ME | # 5 | 9 | 954.6 GWh |
| Androscoggin County, ME | # 6 | 31 | 764.6 GWh |
| Franklin County, ME | # 7 | 17 | 756.9 GWh |
| Aroostook County, ME | # 8 | 32 | 675.2 GWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Piscataquis County, ME | # 9 | 4 | 505.6 GWh |
| Hancock County, ME | # 10 | 16 | 483.5 GWh |
| York County, ME | # 11 | 25 | 299.8 GWh |
| Waldo County, ME | # 12 | 9 | 285.2 GWh |
| Kennebec County, ME | # 13 | 28 | 209.1 GWh |
| Sagadahoc County, ME | # 14 | 5 | 65.0 GWh |
| Knox County, ME | # 15 | 5 | 22.2 GWh |
| Lincoln County, ME | # 16 | 4 | 21.0 GWh |