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Gridcensus

Brownfield & Retired Power Plant Sites in Massachusetts

174 catalogued brownfield and retired-generation sites in Massachusetts, listed by former capacity. Each carries an existing utility-scale grid interconnection that a new datacenter load may be able to re-use.

At a glance

Massachusetts has 174 brownfield and retired-generation sites in GridCensus: 34 retired power plants from EIA-860 and 140 EPA-tracked contaminated or reuse sites. Together they record 6,090 MW of existing or former generating capacity, 17th among 50 states and DC. The largest by capacity is Mystic Generating Station at 2,844.2 MW.

What kinds of former sites are in Massachusetts?

By former use, the list includes 95 landfill, 21 Superfund, 20 natural gas, 11 brownfield, 10 oil, 6 manufacturing and 4 other categories. Recorded retirement dates run from December 1991 to December 2024, with 12 retirements in 2015 or later. 67 of 78 sites with a measured distance sit within 2 miles of a transmission substation.

How does Massachusetts compare with other states?

Massachusetts ranks 2nd of 50 states and DC by number of brownfield and retired-generation sites, out of 2,085 nationally. By recorded capacity (6,090 MW) it ranks 17th, against 289,280 MW across all states. The state also has 1,861 scored datacenter candidate sites, 44 of them classed as brownfield sites, averaging 54.2 on the 0–100 DC Readiness scale.

Where in Massachusetts are these sites?

All brownfield and retired plant sites in Massachusetts

SiteFormer useCapacityRetiredCounty
Mystic Generating Stationgas2,844 MW2024-06-01Middlesex
Salem Harboroil805 MW2014-06-01Essex
New Boston Generating Stationgas718 MW2007-09-01Suffolk
Stony Brookgas422 MW—Hampden
Canalgas330 MW—Barnstable
Tanner Street Generationgas151 MW2024-10-01Middlesex
Potter Station 2gas106 MW2024-01-01Norfolk
Kendall Square Stationgas60 MW2018-12-01Middlesex
General Electric Aircraft Enginesgas54 MW2020-03-01Essex
Exelon Edgar LLCoil28 MW2001-09-01Norfolk
Cleary Flood Hybridoil28 MW2020-12-01Bristol
Cabot Holyokegas26 MW2013-03-01Hampden
Mass Inst Tech Cntrl Utilities/Cogen Pltgas21 MW2021-04-01Middlesex
Nantucket Hybridoil20 MW2019-08-01Nantucket
Exelon L Streetoil19 MW2016-10-01Suffolk
Deer Island Treatment Plantbiomass12 MW2004-03-01Suffolk
Fort Devens-Sudbury Training Annex (Solar)superfund10 MW——
Greenwood St. Landfilllandfill8 MW——
GRS Fall Rivergas7 MW2022-01-01Bristol
Gillette SBMCgas7 MW2010-01-01Suffolk
Medical Area Total Energy Plantoil7 MW2021-12-01Suffolk
Newark America Millgas6 MW2024-12-01Worcester
Ravenbrook Farms Landfilllandfill6 MW——
Iron Horse Park Asbestos Landfill Solarsuperfund6 MW——
Bolton Orchardsbrownfield6 MW——
Hunt Road Landfilllandfill6 MW——
East Bridgewatergas6 MW2010-12-01Plymouth
Theophilus Smith Road Landfilllandfill6 MW——
Mattapoisett Landfill Solarlandfill6 MW——
Plainville Landfilllandfill6 MW——
FMR Industrialbrownfield6 MW——
FMR Lucent Technologiesmanufacturing6 MW——
Osgood Landing Solarmanufacturing6 MW——
Iron Horse Park / Shaffer Landfillsuperfund6 MW——
Palmer Metropolitan Airfield Solarbrownfield6 MW——
Montague Landfill Solarlandfill6 MW——
Nyanza Waste Dump Superfund Sitesuperfund6 MW——
Mount Tom Stationpower_plant6 MW——
Raffaele Road Solar Projectbrownfield6 MW——
W.R. Grace Solarsuperfund6 MW——
Fairhaven Sanitary Landfill (Canton)landfill6 MW——
Marion Landfill Community Solarlandfill5 MW——
Emery Street Landfilllandfill5 MW——
Hudson/Stow Landfill Solarlandfill5 MW——
Beverly Landfill Solarlandfill5 MW——
Randolph Landfill Solarlandfill5 MW——
Bird Machine Landfilllandfill5 MW——
Titcomb Solar Arraylandfill5 MW——
Harwich Municipal Landfilllandfill5 MW——
Falmouth Landfilllandfill4 MW——
Barnstable Landfilllandfill4 MW——
Former Parsons Paper Companysuperfund4 MW——
Industri-plex Solarsuperfund4 MW——
Cottage Street Landfilllandfill4 MW——
Sylvester Ray Construction & Demolition Debris Landfilllandfill4 MW——
Belchertown Road Landfill Solarlandfill4 MW——
Hartford Turnpike/Shrewsbury Landfilllandfill4 MW——
Needham Landfilllandfill4 MW——
Iron Horse Park/Dow Solarsuperfund4 MW——
Sutton Brook Disposal Area Solarsuperfund4 MW——
Industri-Plexsuperfund4 MW——
Berkley Landfill Solarlandfill4 MW——
Groveland Wells Solarsuperfund4 MW——
Charles George Landfillsuperfund4 MW——
Hadley Fallshydro4 MW—Hampden
North Adams Landfilllandfill4 MW——
Woburn Landfilllandfill3 MW——
Pembroke Landfill Solarlandfill3 MW——
East Bridgewater Landfill Solarlandfill3 MW——
Rising Paper Solarlandfill3 MW——
Beech St. Landfilllandfill3 MW——
Williams College - Campus CHPoil3 MW—Berkshire
Massachusetts Military Reservation (Otis) #2superfund3 MW——
Northampton Landfill Solarlandfill3 MW——
Raynham Landfill Community Solarlandfill3 MW——
Randolph Electricgas3 MW2010-06-01Norfolk
Massachusetts Military Reservation (Otis) #1superfund3 MW——
Mansfieldgas3 MW2011-05-01Bristol
Scituate Landfilllandfill3 MW——
Halifax Electricgas3 MW2010-06-01Plymouth
Cherry Streetoil3 MW2003-12-01Middlesex
Berkshire Truck Plazabrownfield3 MW——
Groton Landfilllandfill3 MW——
Pittsfield Municipal Landfilllandfill3 MW——
Bolton Orchards Phase IIbrownfield3 MW——
Old Groveland Rd. Landfill Solarsuperfund3 MW——
Ludlow Landfilllandfill3 MW——
Bellingham Landfill Solarlandfill3 MW——
Delta Hills Landfilllandfill3 MW——
Lee Landfill (Willow Hill Road)landfill3 MW——
Cowles Gravel Solarbrownfield3 MW——
Solutia (Monsanto)rcra3 MW——
Erving Paper Millsoil3 MW2011-01-01Franklin
Genrad Solarrcra3 MW——
Stow Brownfield Solarbrownfield3 MW——
Westfield Landfilllandfill3 MW——
MT Sullivan Landfill Solarlandfill3 MW——
Rehoboth Landfill (MA)landfill2 MW——
Oliver Street Landfilllandfill2 MW——
Weston Landfilllandfill2 MW——
Rumford Ave. Landfill Solarlandfill2 MW——
Chicopee Elks Landfilllandfill2 MW——
Mashpee Landfill Solarlandfill2 MW——
Greenfield Solar Farmlandfill2 MW——
Simonds Rd. Landfilllandfill2 MW——
Hill Street Landfilllandfill2 MW——
Indian Orchard Solar Facilitybrownfield2 MW——
Falmouth Landfill--Phase 2landfill2 MW——
Clark Universitygas2 MW2012-05-01Worcester
Philips Lightolier Windmanufacturing2 MW——
Chicopee Electricgas2 MW2012-01-01Hampden
Former Grasso Landfilllandfill2 MW——
Former Comp Chemicalmanufacturing2 MW——
Williamston Landfilllandfill2 MW——
Prospect Street Landfilllandfill2 MW——
Sullivan's Ledgesuperfund2 MW——
Hull Wind IIlandfill2 MW——
Silver Lake Solar Photovoltaic Facilitysuperfund2 MW——
Chatham Landfilllandfill2 MW——
Concord Landfill Phase Ilandfill2 MW——
North Carver Landfilllandfill2 MW——
Saugus Landfill Solarlandfill2 MW——
Acton Landfilllandfill2 MW——
Southbridge Landfill Gas-to-Energygas2 MW—Worcester
Westford St. Landfilllandfill2 MW——
Sudbury Landfilllandfill2 MW——
West Boylston Landfilllandfill2 MW——
Russells Mills Road Landfilllandfill1 MW——
Dover Landfill Solarlandfill1 MW——
Lexington Landfilllandfill1 MW——
Shirley Landfilllandfill1 MW——
Dorchester Solar Power Projectpower_plant1 MW——
Huntington Avenue Landfilllandfill1 MW——
Braintree Landfilllandfill1 MW——
Brewster Landfilllandfill1 MW——
Tisbury Landfilllandfill1 MW——
Waltham Street Landfilllandfill1 MW——
Winsor Dam Power Stationhydro1 MW1991-12-01Hampshire
Stoughton Landfilllandfill1 MW——
Commercial Streetoil1 MW2010-06-01Essex
Riverside Holyokehydro1 MW—Hampden
Adams Landfilllandfill1 MW——
Norfolk Landfill Phase IIlandfill1 MW——
Haverhill Solar Power Projectpower_plant1 MW——
Boxford Landfilllandfill1 MW——
Fitchburg Gas & Electric Light Companymanufacturing1 MW——
Howe Street Landfilllandfill1 MW——
Bent Mill Solarmanufacturing1 MW——
Chebacco Road Solar Arraylandfill1 MW——
Wellfleet Landfill Solarlandfill1 MW——
Stockbridge Landfilllandfill1 MW——
West Tisbury Landfilllandfill1 MW——
Wilbraham Landfilllandfill1 MW——
Lenox Landfilllandfill1 MW——
Revere Solar Power Projectpower_plant1 MW——
Eastham Landfilllandfill1 MW——
Hix Bridge Road Landfilllandfill1 MW——
Everett Solar Power Projectpower_plant1 MW——
Duxbury Landfilllandfill1 MW——
Bridge Street Landfilllandfill1 MW——
Orleans Landfilllandfill1 MW——
Norfolk Landfill Phase Ilandfill1 MW——
Massachusetts Military Reservation (Otis) - Microgridsuperfund1 MW——
Lancaster Landfilllandfill1 MW——
New Bedford High School Solarbrownfield1 MW——
Brockton Brightfieldbrownfield0 MW——
Quaboag Landfill Solarlandfill0 MW——
Cedar Street Landfilllandfill0 MW——
Wells G&H - UniFirstsuperfund0 MW——
Re-Solve Superfund Solarsuperfund0 MW——
Chilmark Landfilllandfill0 MW——
South Hadley Landfilllandfill0 MW——
Aquinnah Landfilllandfill0 MW——
Fort Devens-Sudbury Training Annex (GSHP)superfund———

Frequently asked questions

How many retired power plants are in Massachusetts?

GridCensus lists 34 retired power plant sites in Massachusetts from EIA-860 retirement records. 28 have a recorded retirement date, 12 of them in 2015 or later.

What is the largest retired power plant or brownfield site in Massachusetts?

Mystic Generating Station in Charlestown is the largest by recorded capacity, at 2,844.2 MW. It is followed by Salem Harbor (805.1 MW) and New Boston Generating Station (717.7 MW).

Which power plant in Massachusetts retired most recently?

Newark America Mill has the latest recorded retirement date in the state, December 2024, with 6.3 MW of capacity.

Which county in Massachusetts has the most brownfield and retired plant sites?

Middlesex County has the most, with 5, followed by Suffolk County with 5.

How many EPA brownfield sites in Massachusetts have completed cleanup?

140 of the 140 EPA-tracked sites listed for Massachusetts are recorded as cleanup complete.

Looking for a specific record? The directory lists every brownfield site, A to Z.

More on Massachusetts, and states with similar counts

About this data

Source: EIA-860 retired generating units and EPA RE-Powering America's Land contaminated-site records, as published March 6, 2026. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Brownfield and retired power plant sites in Massachusetts”, https://gridcensus.com/brownfield-sites/massachusetts (data as of March 6, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for brownfield sites in Massachusetts is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.

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