| Milo CSG | Milo CSG, LLC | Milo, ME | 7 GWh | Jan 2022 | Dec 2025 |
Solar
|
| Millstone | Dominion Energy Nuclear Conn Inc | Waterford, CT | 17 TWh | Nov 1975 | May 2026 |
Nuclear
|
| Millis MA 1 | Millis MA 1 LLC | Millis, MA | 2 GWh | Oct 2018 | Dec 2025 |
Solar
|
| Millennium Power | Millennium Power Company, LLC | Charlton, MA | 995 GWh | Mar 2001 | May 2026 |
Natural Gas
|
| Millbury Solar | Evergreen Wind, LLC | Millbury, MA | 5 GWh | Mar 2014 | Dec 2025 |
Solar
|
| Millbury MA #1092 | Millbury MA #1092 LLC | Millbury, MA | 2 GWh | May 2019 | Dec 2025 |
Solar
|
| Milford Power Project | Milford Power Co LLC | Milford, CT | 3 TWh | Jan 2004 | May 2026 |
Natural Gas
|
| Milford Power LP | Milford Power LLC | Milford, MA | 253 GWh | Feb 1993 | Dec 2025 |
Natural Gas
|
| Milford Hydro Station | Brookfield Black Bear Hydro, LLC | Milford, ME | 36 GWh | Jun 1941 | Dec 2025 |
Water
|
| Middletown | Middletown Power LLC | Middletown, CT | 33 GWh | Sep 1958 | Dec 2024 |
Residual Fuel Oil : 60.6%
Natural Gas : 39.3%
|
| Middleton Solar Park | Novis Renewables, LLC | Middleton, MA | 7 GWh | May 2018 | Dec 2024 |
Solar
|
| Middlesex 2 | Green Mountain Power Corp | Moretown, VT | 6 GWh | Dec 1927 | Dec 2025 |
Water
|
| Middlebury College | Middlebury College Biomass | Middlebury, VT | 2 GWh | Dec 1979 | May 2026 |
Wood/Wood Waste Solids : 60.7%
Natural Gas : 39.3%
|
| MHG Wallingford | Standard Solar | Wallingford, VT | 3 GWh | Nov 2019 | Dec 2025 |
Solar
|
| MEVS Waterhouse | MEVS LLC | Scarborogh, ME | 3 GWh | Nov 2024 | Dec 2025 |
Solar
|
| MEVS DOT 109 | MEVS DOT, LLC | Augusta, ME | 4 GWh | Jun 2023 | Dec 2025 |
Solar
|
| MEVS Clark LLC | MEVS Clark LLC | Bingham, ME | 6 GWh | Sep 2023 | Dec 2025 |
Solar
|
| Methuen Landfill | CleanCapital Holdings | Methuen, MA | 2 GWh | Jun 2013 | Dec 2025 |
Solar
|
| Messalonskee 5 | Messalonskee Stream Hydro LLC | Waterville, ME | 4 GWh | Dec 1934 | Dec 2025 |
Water
|
| Messalonskee 3 | Messalonskee Stream Hydro LLC | Oakland, ME | 4 GWh | Dec 1917 | Dec 2025 |
Water
|
| Messalonskee 2 (Oakland) | Messalonskee Stream Hydro LLC | Oakland, ME | 7 GWh | Dec 1923 | Dec 2025 |
Water
|
| Merrimack Solar Farm, LLC | Merrimack Solar Farm | Merrimack, NH | 3 GWh | Dec 2018 | Dec 2025 |
Solar
|
| Merrimack | Granite Shore Power | Bow, NH | 116 GWh | Nov 1960 | May 2026 |
Bituminous Coal : 97.6%
Jet Fuel : 2.3%
|
| Merrimac Solar | RWE Clean Energy | Merrimac, MA | 2 GWh | Nov 2013 | Dec 2025 |
Solar
|
| Merrill Road Solar | NextGrid Mangrove, LLC | Lewiston, ME | 6 GWh | Feb 2022 | Dec 2025 |
Solar
|
| Mendon | BWC Box Pond LLC | Mendon, MA | 4 GWh | Nov 2017 | Dec 2024 |
Solar
|
| Medway Hydro | Brookfield Black Bear Hydro, LLC | Medway, ME | 23 GWh | Dec 1922 | Dec 2025 |
Water
|
| Medway Grid | Medway Grid LLC | Medway, MA | 20 GWh | - | May 2026 |
Electricity used for energy storage
|
| Medtronic - New Haven 2 | Bloom Energy | North Haven, CT | 17 GWh | Sep 2020 | Dec 2025 |
Natural Gas
|
| Medtronic - New Haven | Bloom Energy | North Haven, CT | 18 GWh | Sep 2020 | Dec 2025 |
Natural Gas
|
| Medical Area Total Energy Plant | MATEP LLC | Boston, MA | 318 GWh | Dec 1979 | Dec 2024 |
Natural Gas : 98.3%
Distillate Fuel Oil : 1.7%
|
| Mechanic Street (CSG) | Nautilus Solar Solutions | Presque Island, ME | 4 GWh | Nov 2024 | Dec 2025 |
Solar
|
| Mechanic Falls | KEI (Maine) Power Management (IV) LLC | Mechanic Falls, ME | 2 GWh | Mar 1986 | Dec 2025 |
Water
|
| Meadow Solar | Altus Power America Management, LLC | Boston, MA | 4 GWh | Nov 2016 | Dec 2025 |
Solar
|
| ME - Novel (Lighthouse Ph I) Mars Hill | Mars Hill Road Solar Farm, LLC | Westfield, ME | 4 GWh | Jul 2024 | Dec 2025 |
Solar
|
| ME Novel Lighthouse - Penobscot CSG | Luminace Sunbeam Development Holdings, LLC | Patten, ME | 4 GWh | Aug 2024 | Dec 2025 |
Solar
|
| ME Novel Lighthouse - Front St. Solar CS | Luminace Sunbeam Development Holdings, LLC | Skowhegan, ME | 5 GWh | Apr 2023 | Dec 2025 |
Solar
|
| ME Novel Lighthouse - Carrabassett | Luminace Sunbeam Development Holdings, LLC | Carrabassett Valley, ME | 7 GWh | Nov 2023 | Dec 2025 |
Solar
|
| ME Fort Fairfield Solar Plant | ME Fort Fairfield LLC | Presque Isle, ME | 4 GWh | Nov 2024 | Dec 2025 |
Solar
|
| ME-EDFR-Phase I-Woolwich | Green Mile Solar, LLC | Woolwich, ME | 8 GWh | Aug 2023 | Dec 2025 |
Solar
|
| ME-EDFR-Phase I-Embden | Tower Solar Partners, LLC | Embden, ME | 8 GWh | Nov 2023 | Dec 2025 |
Solar
|
| ME - EDFR - Phase I - Bristol | Overlook Solar Partners, LLC | Bristol, ME | 9 GWh | Nov 2023 | Dec 2025 |
Solar
|
| ME - EDF - Phase II - Belfast | Shining Solar Partners, LLC | Belfast, ME | 8 GWh | Aug 2024 | Dec 2025 |
Solar
|
| ME CDG 005 | ME CDG 005 LLC | Veazie, ME | 3 GWh | Nov 2024 | Dec 2025 |
Solar
|
| ME CDG 004 | ME CDG 004 LLC | Bangor, ME | 3 GWh | Nov 2024 | Dec 2025 |
Solar
|
| ME Augusta 13 York Farm Rd Solar | SOL ME Augusta 13 York Farm, LLC | Augusta, ME | 1 GWh | Dec 2023 | Dec 2025 |
Solar
|
| MDFA Devens-Saratoga | Terraform Arcadia | Devens, MA | 3 GWh | Feb 2016 | Dec 2025 |
Solar
|
| MD - EDFR - Phase II - Lewiston | Hayworth Solar Partners, LLC | Lewiston, ME | 8 GWh | Oct 2024 | Dec 2025 |
Solar
|
| Mcindoes | Great River Hydro, LLC | Barnet, VT | 39 GWh | Dec 1930 | Dec 2025 |
Water
|
| McHenry Solar | Ecos Energy LLC | Hampton, CT | 2 GWh | Sep 2021 | Dec 2025 |
Solar
|
| McDougle-Mitchell Solar Project Hybrid C | AES Distributed Energy | Charlton, MA | 7 GWh | Jul 2020 | Dec 2025 |
Solar
|
| McAllister Landfill | Solar Breakers LLC | Portsmouth, RI | 2 GWh | Sep 2022 | Dec 2025 |
Solar
|
| Maynard PV | Terraform Arcadia | Maynard, MA | 1 GWh | Dec 2013 | Dec 2025 |
Solar
|
| Masspower | Masspower | Indian Orchard, MA | 442 GWh | Jun 1993 | Dec 2025 |
Natural Gas
|
| Mass Midstate Solar 3 | Evergreen Wind, LLC | Warren, MA | 6 GWh | Apr 2014 | Dec 2025 |
Solar
|
| Mass Midstate Solar 2 | Evergreen Wind, LLC | Warren, MA | 7 GWh | Apr 2014 | Dec 2025 |
Solar
|
| Mass Midstate Solar 1 | Evergreen Wind, LLC | Warren, MA | 7 GWh | Apr 2014 | Dec 2025 |
Solar
|
| Mass Inst Tech Cntrl Utilities/Cogen Plt | Massachusetts Inst of Tech | Cambridge, MA | 209 GWh | May 1995 | Dec 2025 |
Natural Gas
|
| Mashpee Landfill Solar | Nautilus Solar Solutions | Mashpee, MA | 2 GWh | Aug 2014 | Dec 2025 |
Solar
|
| Mascoma Hydro | Green Mountain Power Corp | W. Lebanon, NH | 202 MWh | Nov 1988 | Dec 2025 |
Water
|
| Marston Mills Solar | SoCore Energy LLC | Marstons Mills, MA | 6 GWh | Nov 2021 | Dec 2025 |
Solar
|
| Marshfield PV | Terraform Arcadia | Marshfield, MA | 5 GWh | Nov 2013 | Dec 2025 |
Solar
|
| Marshfield 6 | Green Mountain Power Corp | Marshfield, VT | 4 GWh | Dec 1926 | Dec 2025 |
Water
|
| Mars Hill | Greenbacker Renewable Energy Corporation | Mars Hill, ME | 4 GWh | Oct 2024 | Dec 2025 |
Solar
|
| Marlborough Solar | Marlborough Solar, LLC | Milton, NY | 3 GWh | Feb 2021 | Dec 2025 |
Solar
|
| Market Street Gardiner Solar, LLC | REA Investments, LLC | Gardiner, ME | 6 GWh | Jun 2022 | Dec 2025 |
Solar
|
| Mariaville Road Elsworth Solar, LLC | REA Investments, LLC | Ellsworth, ME | 1 GWh | Apr 2022 | Dec 2025 |
Solar
|
| Maple(CSG) | Maple Street Solar 1, LLC | Bellingham, MA | 7 GWh | Oct 2021 | Dec 2024 |
Solar
|
| Manville Hill Road Solar | Manville Hill Road Solar LLC | Cumberland, RI | 7 GWh | Apr 2021 | Dec 2025 |
Solar
|
| Manheim New England | Cox Enterprises | North Dighton, MA | 2 GWh | Nov 2012 | Dec 2025 |
Solar
|
| Manchester Street | Manchester Street, LLC. | Providence, RI | 2 TWh | Aug 1995 | May 2026 |
Natural Gas : 92.2%
Distillate Fuel Oil : 7.8%
|
| Manchester Community College North | Onyx Asset Services Group | Great Path, CT | 1 GWh | Sep 2018 | Dec 2024 |
Solar
|
| Manchester Community College East | Onyx Asset Services Group | Manchester, CT | 2 GWh | Sep 2018 | Dec 2024 |
Solar
|
| Mainely Solar (Wyman Hill Solar LLC) | Wyman Hill Solar, LLC | Rumford, ME | 6 GWh | Nov 2022 | Dec 2025 |
Solar
|
| Maine Independence Station | Casco Bay Energy Co LLC | Veazie, ME | 1 TWh | Apr 2000 | Dec 2025 |
Natural Gas
|
| Main Street Solar Project | Greenbacker Renewable Energy Corporation | Rutland, VT | 2 GWh | Nov 2014 | Dec 2025 |
Solar
|
| Main Rd Community Solar | AES Distributed Energy | Newstead, NY | 8 GWh | Jun 2022 | Dec 2025 |
Solar
|
| Madison Solar (CT) | Ecos Energy LLC | Somers, CT | 2 GWh | Dec 2020 | Dec 2025 |
Solar
|
| Madawaska Solar | SoCore Energy LLC | Saint David, ME | 4 GWh | Nov 2024 | Dec 2025 |
Solar
|
| MacKinnon Solar | Ecos Energy LLC | Rutland, VT | 3 GWh | Jul 2021 | Dec 2025 |
Solar
|
| MA Solar Storage 1 Hybrid | Origis Energy USA, Inc | Sterling, MA | 1 GWh | Feb 2018 | Dec 2025 |
Solar
|
| MA Military Reservation Wind Project | Air Force Civil Engineer Center | Otis ANG Base Bourne, MA | 5 GWh | Nov 2009 | Dec 2025 |
Wind
|
| MA-Dighton-A | MA CS Dighton, LLC | Dighton, MA | 6 GWh | May 2024 | Dec 2025 |
Solar
|
| MA CS Uxbridge Community Solar | MA CS Uxbridge, LLC | Uxbridge, MA | 7 GWh | Jan 2023 | Dec 2025 |
Solar
|
| MA Blackstone | Catalyze Blackstone 83 Federal Street Microgrid, LLC | Blackstone, MA | 7 GWh | Jun 2022 | Dec 2025 |
Solar
|
| M Street Jet | Massachusetts Bay Trans Auth | Boston, MA | 294 MWh | Apr 1979 | Dec 2025 |
Kerosene
|
| Ludlow Site 72 - Conti | NSTAR Electric Company | Ludlow, MA | 3 GWh | Jul 2018 | Dec 2025 |
Solar
|
| Ludlow Landfill | CleanCapital Holdings | Ludlow, MA | 3 GWh | Jul 2013 | Dec 2025 |
Solar
|
| LR Wheatfield Solar 1 | LR Wheatfield Solar 1, LLC | Wheatfield, NY | 8 GWh | Sep 2020 | Dec 2025 |
Solar
|
| Lower Village Water Power Project | Sugar River Power LLC | Claremont, NH | 3 GWh | Apr 1995 | Dec 2025 |
Water
|
| Lower Middlebury | Green Mountain Power Corp | Middlebury Lower, VT | 5 GWh | Jul 1917 | Dec 2025 |
Water
|
| Lowell Solar Landfill | Heliovaas LLC | Lowell, MA | 1 GWh | Nov 2013 | Dec 2025 |
Solar
|
| Lost Nation | Granite Shore Power | Groveton, NH | 422 MWh | Aug 1969 | Dec 2024 |
Distillate Fuel Oil
|
| Loring | Altus Power America Management, LLC | Limestone, ME | 8 GWh | Apr 2023 | Dec 2025 |
Solar
|
| Long Plain Solar | Long Plain Solar, LLC | Whatley, MA | 4 GWh | Nov 2019 | Dec 2025 |
Solar
|
| Lockwood Hydroelectric Facility | Merimil Ltd Partnership | Waterville, ME | 13 GWh | Sep 1985 | Dec 2025 |
Water
|
| Lochmere Hydroelectric Plant | Eagle Creek Renewable Energy, LLC | Tilton, NH | 2 GWh | Nov 1984 | Oct 2025 |
Water
|
| LNG 1 & 2 | Connecticut Mun Elec Engy Coop | Norwich, CT | 382 MWh | Mar 2010 | Dec 2025 |
Distillate Fuel Oil
|
| Livermore Falls CSG | Livermore Falls CSG, LLC | Livermore Falls, ME | 4 GWh | Apr 2022 | Dec 2025 |
Solar
|
| Little Falls Solar 1 | Little Falls Solar 1, LLC | Little Falls, NY | 3 GWh | Aug 2020 | Dec 2025 |
Solar
|
