| Mystic Generating Station | gas | 2,844 MW | 2024-06-01 | Middlesex |
| Salem Harbor | oil | 805 MW | 2014-06-01 | Essex |
| New Boston Generating Station | gas | 718 MW | 2007-09-01 | Suffolk |
| Stony Brook | gas | 422 MW | — | Hampden |
| Canal | gas | 330 MW | — | Barnstable |
| Tanner Street Generation | gas | 151 MW | 2024-10-01 | Middlesex |
| Potter Station 2 | gas | 106 MW | 2024-01-01 | Norfolk |
| Kendall Square Station | gas | 60 MW | 2018-12-01 | Middlesex |
| General Electric Aircraft Engines | gas | 54 MW | 2020-03-01 | Essex |
| Exelon Edgar LLC | oil | 28 MW | 2001-09-01 | Norfolk |
| Cleary Flood Hybrid | oil | 28 MW | 2020-12-01 | Bristol |
| Cabot Holyoke | gas | 26 MW | 2013-03-01 | Hampden |
| Mass Inst Tech Cntrl Utilities/Cogen Plt | gas | 21 MW | 2021-04-01 | Middlesex |
| Nantucket Hybrid | oil | 20 MW | 2019-08-01 | Nantucket |
| Exelon L Street | oil | 19 MW | 2016-10-01 | Suffolk |
| Deer Island Treatment Plant | biomass | 12 MW | 2004-03-01 | Suffolk |
| Fort Devens-Sudbury Training Annex (Solar) | superfund | 10 MW | — | — |
| Greenwood St. Landfill | landfill | 8 MW | — | — |
| GRS Fall River | gas | 7 MW | 2022-01-01 | Bristol |
| Gillette SBMC | gas | 7 MW | 2010-01-01 | Suffolk |
| Medical Area Total Energy Plant | oil | 7 MW | 2021-12-01 | Suffolk |
| Newark America Mill | gas | 6 MW | 2024-12-01 | Worcester |
| Iron Horse Park Asbestos Landfill Solar | superfund | 6 MW | — | — |
| FMR Industrial | brownfield | 6 MW | — | — |
| Bolton Orchards | brownfield | 6 MW | — | — |
| Theophilus Smith Road Landfill | landfill | 6 MW | — | — |
| FMR Lucent Technologies | manufacturing | 6 MW | — | — |
| East Bridgewater | gas | 6 MW | 2010-12-01 | Plymouth |
| Plainville Landfill | landfill | 6 MW | — | — |
| Ravenbrook Farms Landfill | landfill | 6 MW | — | — |
| Hunt Road Landfill | landfill | 6 MW | — | — |
| Mattapoisett Landfill Solar | landfill | 6 MW | — | — |
| Osgood Landing Solar | manufacturing | 6 MW | — | — |
| Iron Horse Park / Shaffer Landfill | superfund | 6 MW | — | — |
| Montague Landfill Solar | landfill | 6 MW | — | — |
| Palmer Metropolitan Airfield Solar | brownfield | 6 MW | — | — |
| Nyanza Waste Dump Superfund Site | superfund | 6 MW | — | — |
| Mount Tom Station | power_plant | 6 MW | — | — |
| Raffaele Road Solar Project | brownfield | 6 MW | — | — |
| Fairhaven Sanitary Landfill (Canton) | landfill | 6 MW | — | — |
| W.R. Grace Solar | superfund | 6 MW | — | — |
| Marion Landfill Community Solar | landfill | 5 MW | — | — |
| Emery Street Landfill | landfill | 5 MW | — | — |
| Hudson/Stow Landfill Solar | landfill | 5 MW | — | — |
| Beverly Landfill Solar | landfill | 5 MW | — | — |
| Randolph Landfill Solar | landfill | 5 MW | — | — |
| Bird Machine Landfill | landfill | 5 MW | — | — |
| Harwich Municipal Landfill | landfill | 5 MW | — | — |
| Titcomb Solar Array | landfill | 5 MW | — | — |
| Falmouth Landfill | landfill | 4 MW | — | — |
| Barnstable Landfill | landfill | 4 MW | — | — |
| Former Parsons Paper Company | superfund | 4 MW | — | — |
| Industri-plex Solar | superfund | 4 MW | — | — |
| Cottage Street Landfill | landfill | 4 MW | — | — |
| Sylvester Ray Construction & Demolition Debris Landfill | landfill | 4 MW | — | — |
| Belchertown Road Landfill Solar | landfill | 4 MW | — | — |
| Hartford Turnpike/Shrewsbury Landfill | landfill | 4 MW | — | — |
| Needham Landfill | landfill | 4 MW | — | — |
| Iron Horse Park/Dow Solar | superfund | 4 MW | — | — |
| Sutton Brook Disposal Area Solar | superfund | 4 MW | — | — |
| Berkley Landfill Solar | landfill | 4 MW | — | — |
| Industri-Plex | superfund | 4 MW | — | — |
| Groveland Wells Solar | superfund | 4 MW | — | — |
| Charles George Landfill | superfund | 4 MW | — | — |
| Hadley Falls | hydro | 4 MW | — | Hampden |
| North Adams Landfill | landfill | 4 MW | — | — |
| Woburn Landfill | landfill | 3 MW | — | — |
| Pembroke Landfill Solar | landfill | 3 MW | — | — |
| Beech St. Landfill | landfill | 3 MW | — | — |
| East Bridgewater Landfill Solar | landfill | 3 MW | — | — |
| Massachusetts Military Reservation (Otis) #2 | superfund | 3 MW | — | — |
| Rising Paper Solar | landfill | 3 MW | — | — |
| Williams College - Campus CHP | oil | 3 MW | — | Berkshire |
| Northampton Landfill Solar | landfill | 3 MW | — | — |
| Berkshire Truck Plaza | brownfield | 3 MW | — | — |
| Scituate Landfill | landfill | 3 MW | — | — |
| Massachusetts Military Reservation (Otis) #1 | superfund | 3 MW | — | — |
| Raynham Landfill Community Solar | landfill | 3 MW | — | — |
| Halifax Electric | gas | 3 MW | 2010-06-01 | Plymouth |
| Mansfield | gas | 3 MW | 2011-05-01 | Bristol |
| Randolph Electric | gas | 3 MW | 2010-06-01 | Norfolk |
| Cherry Street | oil | 3 MW | 2003-12-01 | Middlesex |
| Groton Landfill | landfill | 3 MW | — | — |
| Pittsfield Municipal Landfill | landfill | 3 MW | — | — |
| Bolton Orchards Phase II | brownfield | 3 MW | — | — |
| Old Groveland Rd. Landfill Solar | superfund | 3 MW | — | — |
| Ludlow Landfill | landfill | 3 MW | — | — |
| Bellingham Landfill Solar | landfill | 3 MW | — | — |
| Delta Hills Landfill | landfill | 3 MW | — | — |
| Cowles Gravel Solar | brownfield | 3 MW | — | — |
| Lee Landfill (Willow Hill Road) | landfill | 3 MW | — | — |
| Solutia (Monsanto) | rcra | 3 MW | — | — |
| Erving Paper Mills | oil | 3 MW | 2011-01-01 | Franklin |
| MT Sullivan Landfill Solar | landfill | 3 MW | — | — |
| Stow Brownfield Solar | brownfield | 3 MW | — | — |
| Genrad Solar | rcra | 3 MW | — | — |
| Westfield Landfill | landfill | 3 MW | — | — |
| Rehoboth Landfill (MA) | landfill | 2 MW | — | — |
| Oliver Street Landfill | landfill | 2 MW | — | — |
| Weston Landfill | landfill | 2 MW | — | — |
| Rumford Ave. Landfill Solar | landfill | 2 MW | — | — |
| Chicopee Elks Landfill | landfill | 2 MW | — | — |
| Mashpee Landfill Solar | landfill | 2 MW | — | — |
| Philips Lightolier Wind | manufacturing | 2 MW | — | — |
| Simonds Rd. Landfill | landfill | 2 MW | — | — |
| Hill Street Landfill | landfill | 2 MW | — | — |
| Greenfield Solar Farm | landfill | 2 MW | — | — |
| Chicopee Electric | gas | 2 MW | 2012-01-01 | Hampden |
| Falmouth Landfill--Phase 2 | landfill | 2 MW | — | — |
| Clark University | gas | 2 MW | 2012-05-01 | Worcester |
| Indian Orchard Solar Facility | brownfield | 2 MW | — | — |
| Former Grasso Landfill | landfill | 2 MW | — | — |
| Former Comp Chemical | manufacturing | 2 MW | — | — |
| Prospect Street Landfill | landfill | 2 MW | — | — |
| Williamston Landfill | landfill | 2 MW | — | — |
| Sullivan's Ledge | superfund | 2 MW | — | — |
| Chatham Landfill | landfill | 2 MW | — | — |
| Silver Lake Solar Photovoltaic Facility | superfund | 2 MW | — | — |
| Hull Wind II | landfill | 2 MW | — | — |
| North Carver Landfill | landfill | 2 MW | — | — |
| Concord Landfill Phase I | landfill | 2 MW | — | — |
| Saugus Landfill Solar | landfill | 2 MW | — | — |
| Southbridge Landfill Gas-to-Energy | gas | 2 MW | — | Worcester |
| Acton Landfill | landfill | 2 MW | — | — |
| Sudbury Landfill | landfill | 2 MW | — | — |
| Westford St. Landfill | landfill | 2 MW | — | — |
| West Boylston Landfill | landfill | 2 MW | — | — |
| Russells Mills Road Landfill | landfill | 1 MW | — | — |
| Lexington Landfill | landfill | 1 MW | — | — |
| Dover Landfill Solar | landfill | 1 MW | — | — |
| Shirley Landfill | landfill | 1 MW | — | — |
| Huntington Avenue Landfill | landfill | 1 MW | — | — |
| Dorchester Solar Power Project | power_plant | 1 MW | — | — |
| Braintree Landfill | landfill | 1 MW | — | — |
| Brewster Landfill | landfill | 1 MW | — | — |
| Winsor Dam Power Station | hydro | 1 MW | 1991-12-01 | Hampshire |
| Stoughton Landfill | landfill | 1 MW | — | — |
| Waltham Street Landfill | landfill | 1 MW | — | — |
| Tisbury Landfill | landfill | 1 MW | — | — |
| Adams Landfill | landfill | 1 MW | — | — |
| Riverside Holyoke | hydro | 1 MW | — | Hampden |
| Commercial Street | oil | 1 MW | 2010-06-01 | Essex |
| Norfolk Landfill Phase II | landfill | 1 MW | — | — |
| Bent Mill Solar | manufacturing | 1 MW | — | — |
| Howe Street Landfill | landfill | 1 MW | — | — |
| Haverhill Solar Power Project | power_plant | 1 MW | — | — |
| Boxford Landfill | landfill | 1 MW | — | — |
| Fitchburg Gas & Electric Light Company | manufacturing | 1 MW | — | — |
| Chebacco Road Solar Array | landfill | 1 MW | — | — |
| Wellfleet Landfill Solar | landfill | 1 MW | — | — |
| Stockbridge Landfill | landfill | 1 MW | — | — |
| West Tisbury Landfill | landfill | 1 MW | — | — |
| Revere Solar Power Project | power_plant | 1 MW | — | — |
| Wilbraham Landfill | landfill | 1 MW | — | — |
| Lenox Landfill | landfill | 1 MW | — | — |
| Eastham Landfill | landfill | 1 MW | — | — |
| Hix Bridge Road Landfill | landfill | 1 MW | — | — |
| Everett Solar Power Project | power_plant | 1 MW | — | — |
| Duxbury Landfill | landfill | 1 MW | — | — |
| Bridge Street Landfill | landfill | 1 MW | — | — |
| Orleans Landfill | landfill | 1 MW | — | — |
| Norfolk Landfill Phase I | landfill | 1 MW | — | — |
| Massachusetts Military Reservation (Otis) - Microgrid | superfund | 1 MW | — | — |
| Lancaster Landfill | landfill | 1 MW | — | — |
| New Bedford High School Solar | brownfield | 1 MW | — | — |
| Brockton Brightfield | brownfield | 0 MW | — | — |
| Quaboag Landfill Solar | landfill | 0 MW | — | — |
| Cedar Street Landfill | landfill | 0 MW | — | — |
| Wells G&H - UniFirst | superfund | 0 MW | — | — |
| Re-Solve Superfund Solar | superfund | 0 MW | — | — |
| Chilmark Landfill | landfill | 0 MW | — | — |
| South Hadley Landfill | landfill | 0 MW | — | — |
| Aquinnah Landfill | landfill | 0 MW | — | — |
| Fort Devens-Sudbury Training Annex (GSHP) | superfund | — | — | — |