Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Mechanic Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | ISO New England (ISNE) | 3.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Missile Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | ISO New England (ISNE) | 4.0 MWh | Nov 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 |
| Indeck Jonesboro Energy Center | Stored Solar J&WE | Jonesboro, ME | ISO New England (ISNE) | 16.0 MWh | Nov 1987 | Jun 2025 | Gaseous Propane : 66.7% Wood/Wood Waste Solids : 33.3% |
| ME - Novel (Lighthouse Ph I) Mars Hill | Mars Hill Road Solar Farm, LLC | Westfield, ME | ISO New England (ISNE) | 22.0 MWh | Jul 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 |
| Lebanon CSG LLC | Dimension Energy LLC | Lebanon, ME | ISO New England (ISNE) | 64.0 MWh | Nov 2024 | Dec 2024 | Solar |
| ISM Solar Shepherd Acres | Navisun LLC | South Paris, ME | ISO New England (ISNE) | 65.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Walden Solar Maine V | Walden Solar Maine V LLC | Leeds, ME | ISO New England (ISNE) | 76.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Mars Hill | Greenbacker Renewable Energy Corporation | Mars Hill, ME | ISO New England (ISNE) | 95.0 MWh | Oct 2024 | Dec 2024 | Solar |
| Robbins Lumber | Robbins Lumber Inc | Searsmont, ME | ISO New England (ISNE) | 97.0 MWh | Dec 1980 | Dec 2023 | Distillate Fuel Oil |
| Cape Gas Turbine | FPL Energy Cape LLC | Portland, ME | ISO New England (ISNE) | 111.0 MWh | Dec 1969 | Dec 2024 | Distillate Fuel Oil |
| BNRG North Anson (CSG) | Nautilus Solar Solutions | North Anson, ME | ISO New England (ISNE) | 143.0 MWh | Oct 2024 | Dec 2024 | Solar |
| BNRG Norridgewock (CSG) | Nautilus Solar Solutions | Norridgewock, ME | ISO New England (ISNE) | 171.0 MWh | Oct 2024 | Dec 2024 | Solar |
| BRNG Nicolin (CSG) | Nautilus Solar Solutions | Ellsworth, ME | ISO New England (ISNE) | 205.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Dynamic - Norridgewock Martin Stream (CSG) | Nautilus Solar Solutions | Norridgewock, ME | ISO New England (ISNE) | 206.0 MWh | Oct 2024 | Dec 2024 | Solar |
| Sanford CGA | Nautilus Solar Solutions | Sanford, ME | ISO New England (ISNE) | 230.0 MWh | May 2022 | Dec 2024 | Solar |
| Wymans Deblois | REC RWD, LLC | Deblois, ME | (NBSO) | 244.0 MWh | Sep 2024 | Dec 2024 | Solar |
| Squa Pan Hydro Station | Algonquin Northern Maine | Masardis, ME | (NBSO) | 426.0 MWh | Nov 1941 | Jul 2024 | Water |
| ME - EDF - Phase II - Belfast | Shining Solar Partners, LLC | Belfast, ME | ISO New England (ISNE) | 427.0 MWh | Aug 2024 | Dec 2024 | Solar |
| Dynamic - Leeds Solar (CSG) | Nautilus Solar Solutions | Leeds, ME | ISO New England (ISNE) | 473.0 MWh | Oct 2024 | Dec 2024 | Solar |
| Dynamic - Exeter Solar CSG | Altus Power America Management, LLC | Exeter, ME | ISO New England (ISNE) | 524.0 MWh | Aug 2024 | Dec 2024 | Solar |
| Dairy Farm | Greenbacker Renewable Energy Corporation | Anson, ME | ISO New England (ISNE) | 542.0 MWh | Sep 2024 | Dec 2024 | Solar |
| ME Novel Lighthouse - Penobscot CSG | Luminace Sunbeam Development Holdings, LLC | Patten, ME | ISO New England (ISNE) | 812.0 MWh | Aug 2024 | Dec 2024 | Solar |
| Dynamic - Enfield Hammett Road CSG | Altus Power America Management, LLC | Enfield, ME | ISO New England (ISNE) | 984.0 MWh | Aug 2024 | Dec 2024 | Solar |
| IOS - MEW Phase 1 | Madison Energy Holdings LLC | Madison, ME | ISO New England (ISNE) | 1.0 GWh | Dec 2016 | Dec 2024 | Solar |
| ME Augusta 13 York Farm Rd Solar | SOL ME Augusta 13 York Farm, LLC | Augusta, ME | ISO New England (ISNE) | 1.3 GWh | Dec 2023 | Dec 2024 | Solar |
| Skyway Avenue Solar Farm | REA Investments, LLC | Frenchville, ME | ISO New England (ISNE) | 1.5 GWh | Feb 2024 | Oct 2024 | Solar |
| 15 Glen Harris RD | ME Sandy River LLC | New Sharon, ME | ISO New England (ISNE) | 1.8 GWh | May 2024 | Dec 2024 | Solar |
| Cenergy - Richards (CSG) | Luminace Sunbeam Development Holdings, LLC | Fairfield, ME | ISO New England (ISNE) | 1.8 GWh | Sep 2023 | Dec 2024 | Solar |
| Mechanic Falls | KEI (Maine) Power Management (IV) LLC | Mechanic Falls, ME | ISO New England (ISNE) | 1.9 GWh | Mar 1986 | Dec 2024 | Water |
| Brewer (CSG) | Nautilus Solar Solutions | Brewer, ME | ISO New England (ISNE) | 1.9 GWh | Jul 2024 | Dec 2024 | Solar |
| Cenergy - Kiger | Luminace Sunbeam Development Holdings, LLC | Embden, ME | ISO New England (ISNE) | 2.0 GWh | Nov 2023 | Dec 2024 | Solar |
| Solar Mule, LLC | Solar Mule, LLC | Oakland, ME | ISO New England (ISNE) | 2.0 GWh | Aug 2017 | Dec 2024 | Solar |
| Sidney | Nautilus Solar Solutions | Sidney, ME | ISO New England (ISNE) | 2.3 GWh | Apr 2023 | Dec 2024 | Solar |
| ME Novel Lighthouse - Huggard Ave Solar | Luminace Sunbeam Development Holdings, LLC | Limestone, ME | (NA) | 2.5 GWh | Jan 2024 | Dec 2024 | Solar |
| Mariaville Road Elsworth Solar, LLC | REA Investments, LLC | Ellsworth, ME | ISO New England (ISNE) | 2.5 GWh | Apr 2022 | Dec 2024 | Solar |
| Salmon Falls | Green Mountain Power Corp | South Berwick, ME | ISO New England (ISNE) | 2.6 GWh | Jun 1986 | Dec 2024 | Water |
| Richmond Hill | Greenbacker Renewable Energy Corporation | Richmond, ME | ISO New England (ISNE) | 2.6 GWh | Nov 2023 | Dec 2024 | Solar |
| Naples | Naples Casco Solar 1, LLC | Naples, ME | ISO New England (ISNE) | 2.7 GWh | Nov 2021 | Dec 2024 | Solar |
| Ryans Ranch | Nautilus Solar Solutions | Paris, ME | ISO New England (ISNE) | 2.8 GWh | May 2022 | Dec 2024 | Solar |
| Lisbon Street Solar | NextGrid Cliffrose, LLC | Lewiston, ME | ISO New England (ISNE) | 3.0 GWh | Mar 2022 | Dec 2024 | Solar |
| Pumpkin Hill | KEI (Maine) Power Management (II) LLC | Lowell, ME | ISO New England (ISNE) | 3.2 GWh | Feb 1987 | Dec 2024 | Water |
| Waterboro | Madison Energy Investments LLC | East Waterboro, ME | ISO New England (ISNE) | 3.3 GWh | Jun 2023 | Dec 2024 | Solar |
| Messalonskee 5 | Messalonskee Stream Hydro LLC | Waterville, ME | ISO New England (ISNE) | 3.3 GWh | Dec 1934 | Dec 2024 | Water |
| Pittsfield Hydro | KEI (Maine) Power Management (II) LLC | Burnham, ME | ISO New England (ISNE) | 3.5 GWh | Jun 1986 | Dec 2024 | Water |
| Athens Ridge | Greenbacker Renewable Energy Corporation | Athens, ME | ISO New England (ISNE) | 3.6 GWh | Feb 2024 | Dec 2024 | Solar |
| AES Pelletier Solar, LLC | AES Clean Energy | Fort Kent, ME | (NBSO) | 3.6 GWh | Apr 2023 | Dec 2024 | Solar |
| Canton GLC Solar, LLC | REA Investments, LLC | Canton, ME | ISO New England (ISNE) | 3.6 GWh | Mar 2024 | Dec 2024 | Solar |
| Barker Lower | KEI (Maine) Power Management (III) LLC | Auburn, ME | ISO New England (ISNE) | 3.7 GWh | Mar 1986 | Dec 2024 | Water |
| Samoset Solar | Samoset Solar, LLC | Rockport, ME | ISO New England (ISNE) | 3.8 GWh | Jun 2023 | Dec 2024 | Solar |
| MEVS DOT 109 | MEVS DOT, LLC | Augusta, ME | ISO New England (ISNE) | 3.8 GWh | Jun 2023 | Dec 2024 | Solar |
| ME Novel Lighthouse - Front St. Solar CS | Luminace Sunbeam Development Holdings, LLC | Skowhegan, ME | ISO New England (ISNE) | 3.9 GWh | Apr 2023 | Dec 2024 | Solar |
| Searsmont Road Lincolnville Solar, LLC | REA Investments, LLC | Lincolnville, ME | (NBSO) | 4.0 GWh | Mar 2022 | Jul 2024 | Solar |
| North Nobleboro Road, LLC | REA Investments, LLC | Waldoboro, ME | ISO New England (ISNE) | 4.1 GWh | May 2021 | Dec 2024 | Solar |
| Benton Falls Associates | Essex Hydro Associates LLC | Benton, ME | ISO New England (ISNE) | 4.3 GWh | Nov 1987 | Dec 2024 | Water |
| Gardiner | KEI (Maine) Power Management (III) LLC | Gardiner, ME | ISO New England (ISNE) | 4.3 GWh | Jun 1985 | Dec 2024 | Water |
| Acton | Acton H Road Solar 1, LLC | Acton, ME | ISO New England (ISNE) | 4.6 GWh | Nov 2021 | Dec 2024 | Solar |
| Upper Barker | KEI (Maine) Power Management (III) LLC | Auburn, ME | ISO New England (ISNE) | 4.7 GWh | Apr 1987 | Dec 2024 | Water |
| Augusta | Maine DG Solar Augusta, LLC | Augusta, ME | ISO New England (ISNE) | 4.7 GWh | Feb 2022 | Dec 2024 | Solar |
| Mainely Solar (Wyman Hill Solar LLC) | Wyman Hill Solar, LLC | Rumford, ME | ISO New England (ISNE) | 4.8 GWh | Nov 2022 | Dec 2024 | Solar |
| Pleasant Street | Greenbacker Renewable Energy Corporation | Wilton, ME | ISO New England (ISNE) | 4.9 GWh | Nov 2023 | Dec 2024 | Solar |
| BWC Maces Pond LLC | Navisun LLC | Rockport, ME | ISO New England (ISNE) | 5.0 GWh | Nov 2021 | Dec 2024 | Solar |
| Broadway Solar (CSG) | NextGrid Bitterbush, LLC | Bangor, ME | ISO New England (ISNE) | 5.1 GWh | Aug 2023 | Dec 2024 | Solar |
| Arctaris Saddleback Solar | Arctaris Saddleback Solar, LLC | Dallas Plantation, ME | ISO New England (ISNE) | 5.1 GWh | Oct 2023 | Dec 2024 | Solar |
| ME Novel Lighthouse - Carrabassett | Luminace Sunbeam Development Holdings, LLC | Carrabassett Valley, ME | ISO New England (ISNE) | 5.2 GWh | Nov 2023 | Dec 2024 | Solar |
| Easton CSG 1 LLC | Easton CSG 1 LLC | Easton, ME | ISO New England (ISNE) | 5.2 GWh | Jan 2024 | 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 |
| Corkwood Solar (CSG) | NextGrid Corkwood, LLC | Howland, ME | ISO New England (ISNE) | 5.4 GWh | Oct 2023 | Dec 2024 | Solar |
| Augusta Road Bowdoin Solar, LLC | REA Investments, LLC | Bowdoin, ME | ISO New England (ISNE) | 5.5 GWh | Jan 2022 | Dec 2024 | Solar |
| Farmington | Madison Energy Investments LLC | Farmington, ME | ISO New England (ISNE) | 5.5 GWh | Nov 2023 | Dec 2024 | Solar |
| Washington WS01 | Nautilus Solar Solutions | Washington, ME | ISO New England (ISNE) | 5.6 GWh | May 2022 | Dec 2024 | Solar |
| BD Solar Ellsworth LLC | BD Solar Hancock North LLC | Augusta, ME | ISO New England (ISNE) | 5.6 GWh | May 2022 | Dec 2024 | Solar |
| ME - EDFR - Phase I - Bristol | Overlook Solar Partners, LLC | Bristol, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2023 | Nov 2024 | Solar |
| Orono Hydro Station | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 5.8 GWh | Dec 2008 | Dec 2024 | Water |
| Webb Road Solar | NextGrid Mastic, LLC | Waterville, ME | ISO New England (ISNE) | 5.9 GWh | Aug 2022 | Dec 2024 | Solar |
| Church Hill Road Augusta Solar, LLC | REA Investments, LLC | Augusta, ME | ISO New England (ISNE) | 6.0 GWh | Jan 2022 | Dec 2024 | Solar |
| Loring | Altus Power America Management, LLC | Limestone, ME | ISO New England (ISNE) | 6.1 GWh | Apr 2023 | Dec 2024 | Solar |
| Market Street Gardiner Solar, LLC | REA Investments, LLC | Gardiner, ME | ISO New England (ISNE) | 6.1 GWh | Jun 2022 | Dec 2024 | Solar |
| Nutting Ridge Solar, LLC | REA Investments, LLC | Otisfield, ME | ISO New England (ISNE) | 6.2 GWh | May 2023 | Dec 2024 | Solar |
| Caribou | Altus Power America Management, LLC | Caribou, ME | ISO New England (ISNE) | 6.3 GWh | Jul 2023 | Dec 2024 | Solar |
| Wells (ME) | Nautilus Solar Solutions | Wells, ME | ISO New England (ISNE) | 6.4 GWh | Jun 2022 | Dec 2024 | Solar |
| Shaker | Nautilus Solar Solutions | Gray, ME | ISO New England (ISNE) | 6.5 GWh | Jun 2022 | Dec 2024 | Solar |
| Messalonskee 3 | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 6.5 GWh | Dec 1917 | Dec 2024 | Water |
| Merrill Road Solar | NextGrid Mangrove, LLC | Lewiston, ME | ISO New England (ISNE) | 6.5 GWh | Feb 2022 | Dec 2024 | Solar |
| North Gorham | Brookfield White Pine Hydro LLC | Gorham, ME | ISO New England (ISNE) | 6.6 GWh | Dec 1924 | Dec 2024 | Water |
| Barefoot Solar | Madison Energy Investments LLC | Fairfiled, ME | ISO New England (ISNE) | 6.7 GWh | Nov 2022 | Dec 2024 | Solar |
| AES Daigle Solar, LLC | AES Clean Energy | Fort Kent, ME | (NBSO) | 6.7 GWh | Apr 2023 | Dec 2024 | Solar |
| Athens AT01 | Nautilus Solar Solutions | Athens, ME | ISO New England (ISNE) | 6.8 GWh | May 2022 | Dec 2024 | Solar |
| Hartland Solar | Madison Energy Holdings LLC | Hartland, ME | ISO New England (ISNE) | 6.9 GWh | Nov 2021 | Dec 2024 | Solar |
| Lewiston Junction Road Solar | NextGrid Peppertree, LLC | Poland, ME | ISO New England (ISNE) | 6.9 GWh | Dec 2021 | Dec 2024 | Solar |
| ME-EDFR-Phase I-Woolwich | Green Mile Solar, LLC | Woolwich, ME | ISO New England (ISNE) | 6.9 GWh | Aug 2023 | Dec 2024 | Solar |
| Milo CSG | Milo CSG, LLC | Milo, ME | ISO New England (ISNE) | 6.9 GWh | Jan 2022 | Dec 2024 | Solar |
| Stillwater Hydro Station | Brookfield Black Bear Hydro, LLC | Stillwater, ME | ISO New England (ISNE) | 7.0 GWh | Dec 1912 | Dec 2024 | Water |
| Water Street Solar | AES Distributed Energy | Randolph, ME | ISO New England (ISNE) | 7.0 GWh | Nov 2022 | Dec 2024 | Solar |
| Treasure Lane Solar 1 | AES Clean Energy | Manchester, ME | ISO New England (ISNE) | 7.0 GWh | Apr 2023 | Dec 2024 | Solar |
| Sanford -NY | Nautilus Solar Solutions | Sanford, ME | ISO New England (ISNE) | 7.1 GWh | Jan 2024 | Dec 2024 | Solar |
| SCS Harpswell 012903 Brunswick, LLC | Arevon Energy, Inc. | Brunswick, ME | ISO New England (ISNE) | 7.1 GWh | Oct 2022 | Dec 2024 | Solar |
| International Paper Jay Hydro | Eagle Creek Renewable Energy, LLC | Jay, ME | ISO New England (ISNE) | 7.1 GWh | Dec 1911 | Dec 2024 | Water |
| Standish | Nautilus Solar Solutions | Standish, ME | ISO New England (ISNE) | 7.3 GWh | Sep 2023 | Dec 2024 | Solar |
Browse Power Plants By Maine Counties
Figures are based on December 2024 generation numbers.| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Lincoln County, ME | # 16 | 4 | 18.4 GWh |
| Knox County, ME | # 15 | 5 | 22.0 GWh |
| Sagadahoc County, ME | # 14 | 5 | 63.5 GWh |
| Kennebec County, ME | # 13 | 27 | 198.0 GWh |
| York County, ME | # 12 | 22 | 262.0 GWh |
| Waldo County, ME | # 11 | 9 | 272.1 GWh |
| Hancock County, ME | # 10 | 14 | 479.2 GWh |
| Piscataquis County, ME | # 9 | 4 | 526.8 GWh |
| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Aroostook County, ME | # 8 | 32 | 625.5 GWh |
| Washington County, ME | # 7 | 9 | 696.9 GWh |
| Franklin County, ME | # 6 | 16 | 750.4 GWh |
| Androscoggin County, ME | # 5 | 29 | 758.2 GWh |
| Somerset County, ME | # 4 | 36 | 1.6 TWh |
| Oxford County, ME | # 3 | 21 | 1.7 TWh |
| Cumberland County, ME | # 2 | 22 | 3.3 TWh |
| Penobscot County, ME | # 1 | 47 | 3.8 TWh |