💧 Hydroelectric Power Plants in Maine
Maine operates 56 hydroelectric power plants totaling 785 MW of nameplate capacity. Annual generation: 3.8M MWh.
Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.
Plants56operating
Capacity785 MWnameplate
Generation3.8M MWhannual
All Maine hydroelectric plants
| Plant | City | County | Capacity | Operator |
|---|---|---|---|---|
| Great Lakes Hydro America - Me | Millinocket | Penobscot County | 158 MW | Great Lakes Hydro America Llc |
| Harris Hydro | West Forks | Somerset County | 76 MW | Brookfield White Pine Hydro Llc |
| Wyman Hydro | Bingham | Somerset County | 72 MW | Brookfield White Pine Hydro Llc |
| S D Warren Westbrook | Westbrook | Cumberland County | 70 MW | Relevate Power Management Llc |
| Rumford Falls Hydro Facility | Rumford | Oxford County | 53 MW | Brookfield Power New England |
| Anson Abenaki Hydros | Madison | Somerset County | 29 MW | Eagle Creek Renewable Energy, Llc |
| Charles E Monty | Lewiston | Androscoggin County | 28 MW | Brookfield White Pine Hydro Llc |
| Brunswick Hydro | Brunswick | Cumberland County | 20 MW | Brookfield White Pine Hydro Llc |
| Worumbo Hydro Station | Lisbon Falls | Androscoggin County | 19 MW | Eagle Creek Renewable Energy, Llc |
| Gulf Island | Lewiston | Androscoggin County | 19 MW | Brookfield White Pine Hydro Llc |
| Skelton | Dayton | York County | 17 MW | Brookfield White Pine Hydro Llc |
| Hydro Kennebec Project | Winslow | Kennebec County | 15 MW | Hydro Kennebec Llc |
| Bonny Eagle | Hollis | York County | 15 MW | Brookfield White Pine Hydro Llc |
| Pejepscot Hydroelectric Project | Topsham | Sagadahoc County | 14 MW | Topsham Hydro Partners |
| Williams Hydro | Solon | Somerset County | 13 MW | Brookfield White Pine Hydro Llc |
| West Enfield Hydro | West Enfield | Penobscot County | 13 MW | Brookfield Black Bear Hydro, Llc |
| Weston Hydro | Skowhegan | Somerset County | 12 MW | Brookfield White Pine Hydro Llc |
| Hiram | Hiram | Cumberland County | 11 MW | Brookfield White Pine Hydro Llc |
| Otis Hydro | Livermore Falls | Franklin County | 10 MW | Eagle Creek Renewable Energy, Llc |
| International Paper Livermore Hydro | Livermore Falls | Androscoggin County | 9 MW | Eagle Creek Renewable Energy, Llc |
| Ellsworth Hydro Station | Ellsworth | Hancock County | 9 MW | Brookfield Black Bear Hydro, Llc |
| Shawmut | Shawmut | Somerset County | 9 MW | Brookfield White Pine Hydro Llc |
| Milford Hydro Station | Milford | Penobscot County | 8 MW | Brookfield Black Bear Hydro, Llc |
| West Buxton | Buxton | York County | 8 MW | Brookfield White Pine Hydro Llc |
| Lockwood Hydroelectric Facility | Waterville | Kennebec County | 7 MW | Merimil Ltd Partnership |
| Aziscohos Hydroelectric Project | Wilson Mills | Oxford County | 7 MW | Brookfield White Pine Hydro Llc |
| Cataract Hydro | Saco | York County | 7 MW | Brookfield White Pine Hydro Llc |
| International Paper Riley Hydro | Jay | Franklin County | 7 MW | Eagle Creek Renewable Energy, Llc |
| Deer Rips | Auburn | Androscoggin County | 7 MW | Brookfield White Pine Hydro Llc |
| Benton Falls Associates | Benton | Kennebec County | 4 MW | Essex Hydro Associates Llc |
| Medway Hydro | Medway | Penobscot County | 4 MW | Brookfield Black Bear Hydro, Llc |
| Orono B | Orono | Penobscot County | 4 MW | Brookfield Black Bear Hydro, Llc |
| Brassua Hydroelectric Project | Rockwood | Somerset County | 4 MW | Brassua Hydroelectric Lp |
| International Paper Jay Hydro | Jay | Franklin County | 3 MW | Eagle Creek Renewable Energy, Llc |
| Messalonskee 2 (Oakland) | Oakland | Kennebec County | 3 MW | Messalonskee Stream Hydro Llc |
| Orono Hydro Station | Orono | Penobscot County | 3 MW | Brookfield Black Bear Hydro, Llc |
| Stillwater B | Old Town | Penobscot County | 2 MW | Brookfield Black Bear Hydro, Llc |
| North Gorham | Gorham | Cumberland County | 2 MW | Brookfield White Pine Hydro Llc |
| Stillwater Hydro Station | Stillwater | Penobscot County | 2 MW | Brookfield Black Bear Hydro, Llc |
| Messalonskee 5 | Waterville | Kennebec County | 2 MW | Messalonskee Stream Hydro Llc |
| Messalonskee 3 | Oakland | Kennebec County | 2 MW | Messalonskee Stream Hydro Llc |
| Upper Androscoggin | Lewiston | Androscoggin County | 2 MW | Lewiston City Of |
| Squa Pan Hydro Station | Masardis | Aroostook County | 2 MW | Algonquin Northern Maine |
| Barker Lower | Auburn | Androscoggin County | 2 MW | Kei (Maine) Power Management (Iii) Llc |
| Mechanic Falls | Mechanic Falls | Androscoggin County | 1 MW | Kei (Maine) Power Management (Iv) Llc |
| Salmon Falls | South Berwick | York County | 1 MW | Green Mountain Power Corp |
| Pittsfield Hydro | Burnham | Somerset County | 1 MW | Kei (Maine) Power Management (Ii) Llc |
| Gardiner | Gardiner | Kennebec County | 1 MW | Kei (Maine) Power Management (Iii) Llc |
| Pumpkin Hill | Lowell | Penobscot County | 1 MW | Kei (Maine) Power Management (Ii) Llc |
| Upper Barker | Auburn | Androscoggin County | 1 MW | Kei (Maine) Power Management (Iii) Llc |
| Androscoggin 3 | Lewiston | Androscoggin County | — | Brookfield White Pine Hydro Llc |
| Bar Mills | Bar Mills | York County | — | Brookfield White Pine Hydro Llc |
| Continental Mills | Lewiston | Androscoggin County | — | Lewiston City Of |
| Fort Halifax | Winslow | Kennebec County | — | Brookfield White Pine Hydro Llc |
| Bates Mill Upper | Lewiston | Androscoggin County | — | Lewiston City Of |
| Hill Mill | Lewiston | Androscoggin County | — | Lewiston City Of |