Directory of Power Plants in Maine
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Gorham Solar 1 (CSG) | CleanCapital Holdings | Gorham, ME | ISO New England (ISNE) | 6.6 GWh | Oct 2023 | Dec 2025 | Solar |
| BWC Maces Pond LLC | Navisun LLC | Rockport, ME | ISO New England (ISNE) | 4.5 GWh | Nov 2021 | Dec 2025 | Solar |
| Hartland Solar | Madison Energy Holdings LLC | Hartland, ME | ISO New England (ISNE) | 6.5 GWh | Nov 2021 | Dec 2025 | Solar |
| Unity Solar | Madison Energy Holdings LLC | Unity, ME | ISO New England (ISNE) | 6.7 GWh | Nov 2021 | Dec 2025 | Solar |
| Baldwin (ME) | Maine DG Solar Baldwin, LLC | West Baldwin, ME | ISO New England (ISNE) | 9.6 GWh | Feb 2022 | Dec 2025 | Solar |
| Augusta | Maine DG Solar Augusta, LLC | Augusta, ME | ISO New England (ISNE) | 4.8 GWh | Feb 2022 | Dec 2025 | Solar |
| Monmouth | Maine DG Solar Monmouth, LLC | Monmouth, ME | ISO New England (ISNE) | 9.5 GWh | Feb 2022 | Dec 2025 | Solar |
| Easton CSG 1 LLC | Easton CSG 1 LLC | Easton, ME | ISO New England (ISNE) | 5.6 GWh | Jan 2024 | Dec 2025 | Solar |
| Limestone CSG 1 LLC | Limestone CSG 1 LLC | Limestone, ME | ISO New England (ISNE) | 5.9 GWh | Nov 2024 | Dec 2025 | Solar |
| Limestone CSG 2 LLC | Limestone CSG 2 LLC | Limestone, ME | ISO New England (ISNE) | 4.8 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic Corinth (CSG) | MN8 Energy LLC | Corinth, ME | ISO New England (ISNE) | 9.8 GWh | Sep 2022 | Dec 2025 | Solar |
| Dynamic Madison (CSG) | MN8 Energy LLC | Madison, ME | ISO New England (ISNE) | 9.5 GWh | Jul 2022 | Dec 2025 | Solar |
| Harmony Solar (ME) | Maine DG Solar Harmony, LLC | Harmony, ME | ISO New England (ISNE) | 9.0 GWh | Jul 2022 | Dec 2025 | Solar |
| Arctaris Saddleback Solar | Arctaris Saddleback Solar, LLC | Dallas Plantation, ME | ISO New England (ISNE) | 7.4 GWh | Oct 2023 | Dec 2025 | Solar |
| Milo CSG | Milo CSG, LLC | Milo, ME | ISO New England (ISNE) | 6.7 GWh | Jan 2022 | Dec 2025 | Solar |
| Livermore Falls CSG | Livermore Falls CSG, LLC | Livermore Falls, ME | ISO New England (ISNE) | 4.3 GWh | Apr 2022 | Dec 2025 | Solar |
| Water Street Solar | AES Distributed Energy | Randolph, ME | ISO New England (ISNE) | 7.2 GWh | Nov 2022 | Dec 2025 | Solar |
| AES Pelletier Solar, LLC | AES Clean Energy | Fort Kent, ME | (NBSO) | 4.8 GWh | Apr 2023 | Dec 2025 | Solar |
| AES Daigle Solar, LLC | AES Clean Energy | Fort Kent, ME | (NBSO) | 6.4 GWh | Apr 2023 | Dec 2025 | Solar |
| Pleasant Street | Greenbacker Renewable Energy Corporation | Wilton, ME | ISO New England (ISNE) | 4.7 GWh | Nov 2023 | Dec 2025 | Solar |
| Treasure Lane Solar 1 | AES Clean Energy | Manchester, ME | ISO New England (ISNE) | 7.6 GWh | Apr 2023 | Dec 2025 | Solar |
| Lewiston Junction Road Solar | NextGrid Peppertree, LLC | Poland, ME | ISO New England (ISNE) | 6.8 GWh | Dec 2021 | Dec 2025 | Solar |
| Webb Road Solar | NextGrid Mastic, LLC | Waterville, ME | ISO New England (ISNE) | 4.8 GWh | Aug 2022 | Dec 2025 | Solar |
| Merrill Road Solar | NextGrid Mangrove, LLC | Lewiston, ME | ISO New England (ISNE) | 6.3 GWh | Feb 2022 | Dec 2025 | Solar |
| Lisbon Street Solar | NextGrid Cliffrose, LLC | Lewiston, ME | ISO New England (ISNE) | 2.7 GWh | Mar 2022 | Dec 2025 | Solar |
| Silver Maple | WEB Silver Maple Wind LLC | Clifton, ME | ISO New England (ISNE) | 63.9 GWh | Sep 2022 | Dec 2025 | Wind |
| BWC Unity Pond LLC | Navisun LLC | Benton, ME | ISO New England (ISNE) | 7.4 GWh | Nov 2023 | Dec 2025 | Solar |
| SCS Harpswell 012903 Brunswick, LLC | Arevon Energy, Inc. | Brunswick, ME | ISO New England (ISNE) | 7.3 GWh | Oct 2022 | Dec 2025 | Solar |
| Caribou | Altus Power America Management, LLC | Caribou, ME | ISO New England (ISNE) | 6.2 GWh | Jul 2023 | Dec 2025 | Solar |
| Loring | Altus Power America Management, LLC | Limestone, ME | ISO New England (ISNE) | 8.1 GWh | Apr 2023 | Dec 2025 | Solar |
| ME Augusta 13 York Farm Rd Solar | SOL ME Augusta 13 York Farm, LLC | Augusta, ME | ISO New England (ISNE) | 1.5 GWh | Dec 2023 | Dec 2025 | Solar |
| Richmond Hill | Greenbacker Renewable Energy Corporation | Richmond, ME | ISO New England (ISNE) | 2.7 GWh | Nov 2023 | Dec 2025 | Solar |
| Athens Ridge | Greenbacker Renewable Energy Corporation | Athens, ME | ISO New England (ISNE) | 4.7 GWh | Feb 2024 | Dec 2025 | Solar |
| ME Novel Lighthouse - Huggard Ave Solar | Luminace Sunbeam Development Holdings, LLC | Limestone, ME | (NA) | 3.9 GWh | Jan 2024 | Dec 2025 | Solar |
| ME Novel Lighthouse - Front St. Solar CS | Luminace Sunbeam Development Holdings, LLC | Skowhegan, ME | ISO New England (ISNE) | 4.8 GWh | Apr 2023 | Dec 2025 | Solar |
| Cenergy - Pulk | BAP Grounded 2 LLC | Sabattus, ME | ISO New England (ISNE) | 7.6 GWh | Nov 2024 | Dec 2025 | Solar |
| Cenergy - Richards (CSG) | Luminace Sunbeam Development Holdings, LLC | Fairfield, ME | ISO New England (ISNE) | 2.1 GWh | Sep 2023 | Dec 2025 | Solar |
| Cenergy - Waterville (CSG) | Luminace Sunbeam Development Holdings, LLC | Waterville, ME | ISO New England (ISNE) | 8.8 GWh | Jun 2023 | Dec 2025 | Solar |
| Cenergy - Kiger | Luminace Sunbeam Development Holdings, LLC | Embden, ME | ISO New England (ISNE) | 2.0 GWh | Nov 2023 | Dec 2025 | Solar |
| Cenergy - Wiscasset (CSG) | Luminace Sunbeam Development Holdings, LLC | Wiscasset, ME | ISO New England (ISNE) | 8.4 GWh | Jun 2023 | Dec 2025 | Solar |
| Barefoot Solar | Madison Energy Investments LLC | Fairfield, ME | ISO New England (ISNE) | 6.3 GWh | Nov 2022 | Dec 2025 | Solar |
| Pittsfield Solar (N. Main St) | Maine DG Solar Pittsfield, LLC | Pittsfield, ME | ISO New England (ISNE) | 8.3 GWh | Sep 2023 | Dec 2025 | Solar |
| ME Novel Lighthouse - Penobscot CSG | Luminace Sunbeam Development Holdings, LLC | Patten, ME | ISO New England (ISNE) | 4.1 GWh | Aug 2024 | Dec 2025 | Solar |
| ME Novel Lighthouse - Carrabassett | Luminace Sunbeam Development Holdings, LLC | Carrabassett Valley, ME | ISO New England (ISNE) | 7.2 GWh | Nov 2023 | Dec 2025 | Solar |
| Dynamic - Wales Leeds Junction Road (CSG) | Altus Power America Management, LLC | Wales, ME | ISO New England (ISNE) | 6.7 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic - Norridgewock Martin Stream (CSG) | Nautilus Solar Solutions | Norridgewock, ME | ISO New England (ISNE) | 8.8 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic - Leeds Solar (CSG) | Nautilus Solar Solutions | Leeds, ME | ISO New England (ISNE) | 8.8 GWh | Oct 2024 | Dec 2025 | Solar |
| Dynamic - Gray Solar | Altus Power America Management, LLC | Gray, ME | ISO New England (ISNE) | 5.2 GWh | Nov 2024 | Dec 2025 | Solar |
| Dynamic - Exeter Solar CSG | Altus Power America Management, LLC | Exeter, ME | ISO New England (ISNE) | 6.3 GWh | Aug 2024 | Dec 2025 | Solar |
| Dynamic - Enfield Hammett Road CSG | Altus Power America Management, LLC | Enfield, ME | ISO New England (ISNE) | 8.6 GWh | Aug 2024 | Dec 2025 | Solar |
| Dynamic - Glenburn Broadway One (CSG) | Altus Power America Management, LLC | Glenburn, ME | ISO New England (ISNE) | 6.2 GWh | Oct 2024 | Dec 2025 | Solar |
| 15 Glen Harris RD | ME Sandy River LLC | New Sharon, ME | ISO New England (ISNE) | 5.3 GWh | May 2024 | Dec 2025 | Solar |
| Fort Fairfield | Standard Solar | Fort Fairfield, ME | ISO New England (ISNE) | 8.1 GWh | Jul 2023 | Dec 2025 | Solar |
| Broadway Solar (CSG) | NextGrid Bitterbush, LLC | Bangor, ME | ISO New England (ISNE) | 6.3 GWh | Aug 2023 | Dec 2025 | Solar |
| Corkwood Solar (CSG) | NextGrid Corkwood, LLC | Howland, ME | ISO New England (ISNE) | 5.8 GWh | Oct 2023 | Dec 2025 | Solar |
| Mars Hill | Greenbacker Renewable Energy Corporation | Mars Hill, ME | ISO New England (ISNE) | 3.8 GWh | Oct 2024 | Dec 2025 | Solar |
| Our Katahdin | Greenbacker Renewable Energy Corporation | Millenocket, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2024 | Dec 2025 | Solar |
| ME - EDFR - Phase I - Bristol | Overlook Solar Partners, LLC | Bristol, ME | ISO New England (ISNE) | 8.5 GWh | Nov 2023 | Dec 2025 | Solar |
| Athens AT01 | Nautilus Solar Solutions | Athens, ME | ISO New England (ISNE) | 7.1 GWh | May 2022 | Dec 2025 | Solar |
| MEVS DOT 109 | MEVS DOT, LLC | Augusta, ME | ISO New England (ISNE) | 3.5 GWh | Jun 2023 | Dec 2025 | Solar |
| Sidney | Nautilus Solar Solutions | Sidney, ME | ISO New England (ISNE) | 2.3 GWh | Apr 2023 | Dec 2025 | Solar |
| Standish | Nautilus Solar Solutions | Standish, ME | ISO New England (ISNE) | 7.3 GWh | Sep 2023 | Dec 2025 | Solar |
| Town House | Nautilus Solar Solutions | Chelsea, ME | ISO New England (ISNE) | 8.3 GWh | Nov 2022 | Dec 2025 | Solar |
| Washington WS01 | Nautilus Solar Solutions | Washington, ME | ISO New England (ISNE) | 5.1 GWh | May 2022 | Dec 2025 | Solar |
| Wells (ME) | Nautilus Solar Solutions | Wells, ME | ISO New England (ISNE) | 8.4 GWh | Jun 2022 | Dec 2025 | Solar |
| ME-EDFR-Phase I-Woolwich | Green Mile Solar, LLC | Woolwich, ME | ISO New England (ISNE) | 7.8 GWh | Aug 2023 | Dec 2025 | Solar |
| ME-EDFR-Phase I-Embden | Tower Solar Partners, LLC | Embden, ME | ISO New England (ISNE) | 8.2 GWh | Nov 2023 | Dec 2025 | Solar |
| Caterpillar Hill | AES Clean Energy | Sedgwick, ME | ISO New England (ISNE) | 8.9 GWh | Nov 2023 | Dec 2025 | Solar |
| BWC Beech Ridge Brook, LLC | Navisun LLC | Scarborough, ME | ISO New England (ISNE) | 7.7 GWh | Apr 2023 | Dec 2025 | Solar |
| Farmingdale FA01 | Nautilus Solar Solutions | Farmingdale, ME | ISO New England (ISNE) | 8.0 GWh | May 2022 | Dec 2025 | Solar |
| Fryeburg | Nautilus Solar Solutions | Fryeburg, ME | ISO New England (ISNE) | 9.3 GWh | Apr 2023 | Dec 2025 | Solar |
| Mechanic Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | ISO New England (ISNE) | 4.2 GWh | Nov 2024 | Dec 2025 | Solar |
| Missile Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | ISO New England (ISNE) | 4.3 GWh | Nov 2024 | Dec 2025 | Solar |
| North Bridgton | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.0 GWh | Oct 2022 | Dec 2025 | Solar |
| Mainely Solar (Wyman Hill Solar LLC) | Wyman Hill Solar, LLC | Rumford, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2022 | Dec 2025 | Solar |
| BNRG Masardis (CSG) | Nautilus Solar Solutions | Masardis, ME | ISO New England (ISNE) | 4.5 GWh | Nov 2024 | Dec 2025 | Solar |
| BRNG Nicolin (CSG) | Nautilus Solar Solutions | Ellsworth, ME | ISO New England (ISNE) | 5.8 GWh | Nov 2024 | Dec 2025 | Solar |
| BNRG Norridgewock (CSG) | Nautilus Solar Solutions | Norridgewock, ME | ISO New England (ISNE) | 3.3 GWh | Oct 2024 | Dec 2025 | Solar |
| BNRG North Anson (CSG) | Nautilus Solar Solutions | North Anson, ME | ISO New England (ISNE) | 3.2 GWh | Oct 2024 | Dec 2025 | Solar |
| Oakland | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.7 GWh | Aug 2022 | Dec 2025 | Solar |
| Quarry | Nautilus Solar Solutions | North Berwick, ME | ISO New England (ISNE) | 10.4 GWh | Nov 2022 | Dec 2025 | Solar |
| Ryans Ranch | Nautilus Solar Solutions | Paris, ME | ISO New England (ISNE) | 4.9 GWh | May 2022 | Dec 2025 | Solar |
| Sabattus SB01 | Nautilus Solar Solutions | Sabattus, ME | ISO New England (ISNE) | 7.7 GWh | Sep 2023 | Dec 2025 | Solar |
| Sanford CGA | Nautilus Solar Solutions | Sanford, ME | ISO New England (ISNE) | 7.8 GWh | May 2022 | Dec 2025 | Solar |
| Sanford -NY | Nautilus Solar Solutions | Sanford, ME | ISO New England (ISNE) | 8.1 GWh | Jan 2024 | Dec 2025 | Solar |
| Shaker | Nautilus Solar Solutions | Gray, ME | ISO New England (ISNE) | 6.2 GWh | Jun 2022 | Dec 2025 | Solar |
| Farmington | Madison Energy Investments LLC | Farmington, ME | ISO New England (ISNE) | 7.3 GWh | Nov 2023 | Dec 2025 | Solar |
| Brewer (CSG) | Nautilus Solar Solutions | Brewer, ME | ISO New England (ISNE) | 7.0 GWh | Jul 2024 | Dec 2025 | Solar |
| Valley Sun Solar | Valley Sun Solar LLC | Grand Isle, ME | ISO New England (ISNE) | 3.1 GWh | Nov 2024 | Dec 2025 | Solar |
| French Road Solar | SoCore Energy LLC | Ashland, ME | ISO New England (ISNE) | 3.1 GWh | Nov 2024 | Dec 2025 | Solar |
| Madawaska Solar | SoCore Energy LLC | Saint David, ME | ISO New England (ISNE) | 3.9 GWh | Nov 2024 | Dec 2025 | Solar |
| Caribou Solar | SoCore Energy LLC | Caribou, ME | ISO New England (ISNE) | 6.2 GWh | Nov 2024 | Dec 2025 | Solar |
| ME Fort Fairfield Solar Plant | ME Fort Fairfield LLC | Presque Isle, ME | ISO New England (ISNE) | 3.8 GWh | Nov 2024 | Dec 2025 | Solar |
| BWC Jimmie Pond | Navisun LLC | Hampden, ME | ISO New England (ISNE) | 3.3 GWh | Nov 2024 | Dec 2025 | Solar |
| ISM Solar Shepherd Acres | Navisun LLC | South Paris, ME | ISO New England (ISNE) | 4.5 GWh | Nov 2024 | Dec 2025 | Solar |
| Augusta Road Bowdoin Solar, LLC | REA Investments, LLC | Bowdoin, ME | ISO New England (ISNE) | 4.8 GWh | Jan 2022 | Dec 2025 | Solar |
| Canton GLC Solar, LLC | REA Investments, LLC | Canton, ME | ISO New England (ISNE) | 4.7 GWh | Mar 2024 | Dec 2025 | Solar |
| Church Hill Road Augusta Solar, LLC | REA Investments, LLC | Augusta, ME | ISO New England (ISNE) | 6.5 GWh | Jan 2022 | Dec 2025 | Solar |
| Houlton Road Solar Farm (CSG) | REA Investments, LLC | Fort Fairfield, ME | ISO New England (ISNE) | 2.3 GWh | Nov 2024 | Dec 2025 | Solar |
| Mariaville Road Elsworth Solar, LLC | REA Investments, LLC | Ellsworth, ME | ISO New England (ISNE) | 1.3 GWh | Apr 2022 | Dec 2025 | Solar |
Browse Power Plants By Maine Counties
Figures are based on December 2025 generation numbers.| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Lincoln County, ME | # 16 | 4 | 21.0 GWh |
| Knox County, ME | # 15 | 5 | 22.2 GWh |
| Sagadahoc County, ME | # 14 | 5 | 65.0 GWh |
| Kennebec County, ME | # 13 | 28 | 209.1 GWh |
| Waldo County, ME | # 12 | 9 | 285.2 GWh |
| York County, ME | # 11 | 25 | 299.8 GWh |
| Hancock County, ME | # 10 | 16 | 483.5 GWh |
| Piscataquis County, ME | # 9 | 4 | 505.6 GWh |
| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Aroostook County, ME | # 8 | 32 | 675.2 GWh |
| Franklin County, ME | # 7 | 17 | 756.9 GWh |
| Androscoggin County, ME | # 6 | 31 | 764.6 GWh |
| Washington County, ME | # 5 | 9 | 954.6 GWh |
| Somerset County, ME | # 4 | 37 | 1.6 TWh |
| Oxford County, ME | # 3 | 21 | 1.7 TWh |
| Penobscot County, ME | # 2 | 47 | 2.6 TWh |
| Cumberland County, ME | # 1 | 25 | 4.1 TWh |