Datacenter Sites in Middlesex, Massachusetts
Middlesex has 281 scored datacenter candidate sites averaging 56.9/100 DC Readiness, with a catalogued aggregate of 6,256 MW. FEMA rates local natural-hazard risk as "Relatively Low".
At a glance
Middlesex, Massachusetts has 281 scored datacenter candidate sites averaging 56.9/100 DC Readiness, roughly in line with the Massachusetts average of 54.2. It ranks 2nd of 13 Massachusetts counties by number of sites and 2nd by average score. The top-scoring site is Substation-Adjacent site · 14370921 at 68.3/100.
Site-selection context for Middlesex
How does Middlesex compare with other counties in Massachusetts?
By number of scored sites, Middlesex ranks 2nd of the 13 Massachusetts counties with a county page, holding 15% of the state's 1,861 sites. Its average DC Readiness of 56.9/100 ranks 2nd in the state and is roughly in line with the national average of 53.0. Nationally it has the 52nd-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 223 score 55 or higher.
What types of datacenter sites are in Middlesex?
Industrial sites are the most common (184, 65% of the county's inventory), followed by substation-adjacent (46) and greenfield (29). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.
What are power cost, hazard, water and fiber conditions in Middlesex?
Industrial electricity averages 16.19¢/kWh and commercial 17.00¢/kWh. FEMA's National Risk Index rates the county "Relatively Low" (22). WRI water stress is low. 11 fiber providers report service in the county. The climate runs 600 cooling degree days a year with a mean temperature of 49°F. Land is valued around $22,138 an acre.
By site type
Top datacenter sites in Middlesex
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN133682 | Substation-Adjacent | 450 kV | 600 MW | 4.3 yrs | 68.3 |
| TEWKSBURY NO. 22A | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 67.2 |
| LEXINGTON | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 67.0 |
| WALTHAM | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 66.3 |
| Westford St. Landfill | Brownfield | — | 2 MW | 4.3 yrs | 64.7 |
| SUDBURY | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 64.7 |
| Industri-plex Solar | Brownfield | 345 kV | 4 MW | 4.3 yrs | 64.3 |
| UNKNOWN140692 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 63.6 |
| FOREST AVENUE STATION | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 62.1 |
| TAP140691 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 62.1 |
| NORTHBORO ROAD | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 62.1 |
| PERRY STREET | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 62.0 |
| READING | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.9 |
| TAP140687 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.9 |
| NORTH MARLBORO | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.9 |
| TAP140689 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.9 |
| TAP140694 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.9 |
| TAP140697 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.9 |
| TRAPELO ROAD | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.8 |
| UNKNOWN139722 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.8 |
| HARTWELL AVENUE | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.7 |
| TAP140680 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.7 |
| BURLINGTON | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.6 |
| TAP140674 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 61.5 |
| OZ Middlesex | Greenfield | — | — | 4.3 yrs | 61.5 |
Every scored site in Middlesex
All 281 sites, best first.
- Substation-Adjacent site · 14370921 · 68.3
- TEWKSBURY NO. 22A · 67.2
- LEXINGTON · 67.0
- WALTHAM · 66.3
- SUDBURY · 64.7
- Westford St. Landfill · 64.7
- Industri-plex Solar · 64.3
- Substation-Adjacent site · 1e56190d · 63.6
- FOREST AVENUE STATION · 62.1
- Substation-Adjacent site · 0b420326 · 62.1
- NORTHBORO ROAD · 62.1
- PERRY STREET · 62.0
- Substation-Adjacent site · 8e021592 · 61.9
- READING · 61.9
- NORTH MARLBORO · 61.9
- Substation-Adjacent site · 26ec231a · 61.9
- Substation-Adjacent site · 8bcfcfa1 · 61.9
- Substation-Adjacent site · bd8a4196 · 61.9
- TRAPELO ROAD · 61.8
- Substation-Adjacent site · 30b60cb8 · 61.8
- HARTWELL AVENUE · 61.7
- Substation-Adjacent site · d4401ff8 · 61.7
- BURLINGTON · 61.6
- Substation-Adjacent site · 692d9921 · 61.5
- OZ Middlesex · 61.5
- EC Near Kendall Square Station · 20f8b2d4 · 61.5
- NORTH CHELMSFORD · 61.0
- Substation-Adjacent site · bcbaacb3 · 61.0
- BILLERICA · 61.0
- EC Near Mystic Generating Station · 3220ca65 · 61.0
- Substation-Adjacent site · 109f3255 · 60.9
- Substation-Adjacent site · 84f8dc09 · 60.9
- Substation-Adjacent site · 75b8ff95 · 60.9
- Substation-Adjacent site · 05fe5a95 · 60.8
- EC Near Tanner Street Generation · dbec6153 · 60.8
- WEST FRAMINGHAM · 60.8
- EC Near Mystic Generating Station · c24e8306 · 60.7
- NORTH DRACUT · 60.6
- Substation-Adjacent site · f31869a9 · 60.6
- PELHAM · 60.6
- Substation-Adjacent site · 4d4b9401 · 60.5
- Substation-Adjacent site · 098611d3 · 60.5
- SPEEN STREET · 60.4
- EC Near Mystic Generating Station · 006acf3f · 60.3
- Substation-Adjacent site · d3303067 · 60.0
- AYER · 60.0
- Substation-Adjacent site · 9bbe3223 · 60.0
- EC Near Kendall Square Station · 6af65085 · 60.0
- Substation-Adjacent site · a357d1e3 · 59.9
- Substation-Adjacent site · f3e09e44 · 59.9
- EC Near Kendall Square Station · 6aad1e81 · 59.9
- EC Near Cherry Street · c4cca88e · 59.2
- EC Near Cherry Street · 6f32ed19 · 59.1
- EC Near Tanner Street Generation · ce9088ed · 59.0
- EC Near Cherry Street · ddcf65ea · 58.8
- EC Near Cherry Street · f1736ed1 · 58.7
- DUNSTABLE · 58.1
- Substation-Adjacent site · 1bfe9b66 · 58.1
- Substation-Adjacent site · 19daefd7 · 58.0
- GROTON STREET · 57.9
- Substation-Adjacent site · cdc4866f · 57.9
- EC Near Tanner Street Generation · b9ffba67 · 57.8
- EC Near Kendall Square Station · 179af65a · 57.5
- EC Near Cherry Street · 3eb782f9 · 56.9
- EC Near Mystic Generating Station · fc61c8d2 · 56.7
- EC Near Cherry Street · e04617a2 · 56.5
- EC Near Tanner Street Generation · 0c29f53a · 56.4
- EC Near Cherry Street · 45f4dd9f · 56.2
- Commonwealth Chemical Corp. · 56.2
- 239.1 Jackson Street · 56.1
- 27 Bennett Street · 56.1
- 115 Middlesex Street · 56.1
- 26 Bennett Street · 56.1
- Reconstructed Commercial St. and Corp. Way Roadway · 56.1
- 291 Jackson Street · 56.1
- Malden DPW · 56.1
- 220 Washington Street · 56.1
- 135 Billerica Street · 56.1
- Parcels 4-9 and 4-10 · 56.1
- 50 Prospect Street · 56.1
- 237 Howard Street · 56.1
- Parcel 4-9/4-10 · 56.1
- River's Edge Parcel 2-10/3-4 South · 56.1
- 585 Middlesex Street · 56.1
- River's Edge Parcels 2-7, 2-9, 3-1, 3-2 & 3-3 · 56.1
- Commercial Street / Corporation Way · 56.1
- 351 Jackson Street · 56.1
- Tremont Villa · 56.1
- Parcel 4-4 · 56.1
- River's Edge Phase I Project Area · 56.1
- Parcel 4-15 · 56.1
- Market Forge · 56.1
- 49-51 Allen Street · 56.1
- Kiley Barrel – 264-266 Somerville · 56.1
- Parcel 4-3 · 56.1
- 297 Medford St · 56.1
- Rivers Edge - Parcels 4-1 through 4-6 · 56.1
- 4 Milk Place · 56.1
- 137 Willie Street · 56.1
- Parcel 4-6 · 56.1
- River's Edge Parcel 6-5 · 56.1
- Rivers Edge Parcel 2-5 · 56.1
- Haskell Property - Parcel 11 · 56.1
- 55 Rock Street · 56.1
- 3 Hawkins Street · 56.1
- 29, 30, and 33 Allen Street · 56.1
- Rivers Edge - Parcels 4-15 and 4-16 · 56.1
- Parcel 4-8 · 56.1
- MBTA Right-of-Way · 56.1
- 40 Bennett Street · 56.1
- Parcel 4-7 · 56.1
- Parcel 5-3, Former Solvent Chemical Property · 56.1
- 129 Willie Street · 56.1
- 86 Fay Street · 56.1
- 68 Jackson Street · 56.1
- 49 Rock Street · 56.1
- 217 Somerville Ave · 56.1
- 663 Lawrence Street · 56.1
- 193.1 Jackson Street · 56.1
- 15-25 Cross Street · 56.1
- 118 Prospect Street · 56.1
- Rivergreen Drive Dock · 56.1
- Parcel 4-11 · 56.1
- Parcel 4-1 · 56.1
- Parcel 5-3 · 56.1
- Haskell Property - Parcel 11A · 56.1
- Parcel 2-6/General Electric · 56.1
- Allen Street Community Garden · 56.1
- 90 Washington Street · 56.1
- 163 Glen Street · 56.1
- Mystic Plating · 56.1
- O'Donnell Park · 56.1
- 26-30 Prospect Street · 56.1
- 5 Palmer Avenue · 56.1
- River's Edge Parcels 2-10/3-4 North · 56.1
- Parcel 4-5 · 56.1
- CAAS · 56.1
- River's Edge Parcels 2-26 and 3-5 · 56.1
- 21 & 51 Nottingham Street · 56.1
- 56 Webster Avenue · 56.1
- Parcel 4-17 · 56.1
- Rivers Edge Parcel 2-6 · 56.1
- Rail Yard 21 · 56.1
- 137 Billerica Street · 56.1
- Air Force Road · 56.1
- 117 Perry Street · 56.1
- Parcel 2-25 · 56.1
- 101 Middlesex Street · 56.1
- Parcel 4-2 · 56.1
- Kiley Barrel - 9 Milk · 56.1
- Kiley Barrel - 14 Bennett · 56.1
- Kiley Barrel – 10 Milk · 56.1
- 258 Somerville Ave · 56.1
- 220 Tanner Street · 56.1
- Kiley Barrel, 20-22 Prospect · 56.1
- 24 Cross Street East · 56.1
- Kiley Barrel – 8 Bennett · 56.1
- Eagle Court · 56.1
- Norman Street and Air Force Road · 56.1
- John A. Frye Shoe Company · 56.0
- 11 E. Merrimack Street · 56.0
- Mine Site · c51e5b63 · 56.0
- Assets Buildings Site · 56.0
- Mattress Factory · 56.0
- Mine Site · 13f7b345 · 56.0
- 158 & 176 Middle Street [Ayer Lofts] · 56.0
- Seymour Oil · 56.0
- 255 Pearl Street · 56.0
- 2011 Middlesex Street · 56.0
- Former St. Polycarp Property · 56.0
- 91 Pevey Street · 56.0
- 174 River Place · 56.0
- Bay State · 56.0
- 152 River Place · 56.0
- Conway Park · 56.0
- Mine Site · 050dc286 · 56.0
- Conwell School · 56.0
- STC Property · 56.0
- 180 Church Street · 56.0
- 91 Marshall Street · 56.0
- 251 Mount Vernon Street · 56.0
- 10 Davidson Street · 56.0
- 230 Berkeley Street · 56.0
- Malden River Parcels · 56.0
- 1995 Middlesex Street · 56.0
- 171 Lincoln Street · 56.0
- 303 Medford Street · 56.0
- City Parcels · 56.0
- 207 Walker Street · 56.0
- 65 Bow Street · 56.0
- Former Railroad Depot · 56.0
- Boynton Yards · 56.0
- Howard And Arch Street · 56.0
- 44 Post Office [Paul Tsongas Arena] · 56.0
- ENRM Bedford VA Medical Center · 359b99e9 · 56.0
- Kemp Nuts · 56.0
- Davidson Street Properties · 56.0
- Somerville Community Path Park, Phase I Area · 56.0
- 276 Broadway Street · 56.0
- Solvent Chemical Company · 56.0
- 450 Aiken St [LeLacheur Park] · 56.0
- 100 Phoenix Avenue · 56.0
- 100 River Place · 56.0
- 234-266 Mount Vernon Street Soucy · 56.0
- 28 Livingston Street · 56.0
- Vernon Street · 56.0
- 33 E. Merrimack Street · 56.0
- MaxPak · 56.0
- Dutton Street · 56.0
- 45 College Avenue · 55.9
- M.W. Carr · 55.9
- 448 High Street - Lot 35 · 55.9
- McDowell Property · 55.9
- 133 Stedman Street · 55.9
- 448 High Street - Lot 31 · 55.9
- DPW Property · 55.9
- 1154 Broadway · 55.9
- 1072 Belmont Street · 55.9
- Jenney Gasoline Station · 55.9
- EC Near Cherry Street · 096cc331 · 55.8
- Mine Site · 06c314d5 · 55.8
- EC Near Cherry Street · 0c1f3e81 · 55.6
- EC Near Cherry Street · 5c8e0eac · 55.3
- Gates St Parcel · 54.9
- NWIRP Bedford MA · 54.9
- Woburn Loop · 54.9
- Mine Site · a0ade614 · 54.8
- Mine Site · 8aa4d786 · 54.8
- Mine Site · 3ca1c15e · 54.8
- Mine Site · 8c1ccc26 · 54.8
- Mine Site · 367c7dca · 54.7
- EC Near Tanner Street Generation · 0924a93e · 54.7
- Cedar Woods · 54.6
- 110 Mt Wayte Ave · 54.6
- Fabric Place - Lot 30 · 54.6
- Fabric Place - Lot 20 · 54.6
- 936 Central Street · 54.6
- 10 Auburn Street · 54.6
- Winchester Engineering And Analytical Center · 48854fce · 54.6
- Fabric Place - Lot 250 · 54.6
- 222 Walnut Street · 54.6
- Fabric Place - Lot 25B · 54.6
- 18 Auburn Street · 54.6
- 74 Franklin Street · 54.6
- Silton Glass-Lot 130 · 54.6
- Jonathan Maynard Building · 54.6
- 186-190 Union Avenue · 54.6
- 19 Proctor Street · 54.6
- Silton Glass-Lot 80 · 54.6
- Town of Lancaster Public Landfill · 54.5
- Mine Site · d8a5df81 · 54.5
- Fabric Place - Lot 60 · 54.5
- Mine Site · bfbd14fb · 54.5
- 68 South Street · 54.5
- 101-105 Irving Street · 54.5
- 103 Guild Road · 54.5
- 48 Pratt Street · 54.5
- Cochituate Rail Trail - Lot 3B · 54.4
- Cadilac Paint · 54.4
- Library Parcels - Lot 200 · 54.4
- Greenfield (SANDY POND - TAP140689) · 54.4
- Library Parcels - Lot 18A · 54.4
- Library Parcels - Lot 240 · 54.4
- 43 Morton Street · 54.4
- Library Parcels - Lot 190 · 54.4
- Library Parcels · 54.4
- Mine Site · 7dc3d7e5 · 54.4
- Federal Regional Center (FRC) - FEMA R-1 Maynard, MA · ec9bb1a9 · 54.3
- Cochituate Rail Trail - Lot 250 · 54.3
- Cochituate Rail Trail - Lot 14A · 54.3
- Danforth Green · 54.3
- Mine Site · 6f922f9c · 54.2
- Mine Site · e9117cd6 · 54.2
- 43 West Main Street · 54.1
- Nashua River Rail Trail Parking Lot · 54.1
- EC Near Kendall Square Station · 7c04a074 · 54.0
- STOW, MA R/W 21 · 90db6541 · 53.9
- SARGENT SHRIVER · 14cebf1e · 53.8
- EC Near Mystic Generating Station · 3650d62c · 53.4
- EC Near Cherry Street · f40d88a5 · 52.3
- EC Near Mystic Generating Station · 7cd101f1 · 50.9
Middlesex datacenter FAQ
How many datacenter sites are in Middlesex?
281 scored datacenter candidate sites, averaging 56.9/100 DC Readiness. That is the 2nd-most of 13 Massachusetts counties with five or more sites.
What is the highest-scoring datacenter site in Middlesex?
Substation-Adjacent site · 14370921 scores 68.3/100 DC Readiness, the highest of the 281 scored sites in Middlesex (a substation-adjacent site).
Does Middlesex offer datacenter tax incentives?
No datacenter-specific tax incentive is on record for Middlesex in the GridCensus county dataset.
What is the natural-hazard risk in Middlesex?
FEMA's National Risk Index rates Middlesex as "Relatively Low" (score 22).
What are industrial electricity rates in Middlesex?
Average industrial electricity is 16.19¢/kWh and commercial is 17.00¢/kWh in Middlesex.
More in Massachusetts
- All datacenter sites in Massachusetts· 1,861 sites
- Operating datacenters in Massachusetts
- Electric substations in Massachusetts
- Worcester County· 283 sites · avg 53.4
- Essex County· 216 sites · avg 54.5
- Suffolk County· 206 sites · avg 56.5
- Hampden County· 175 sites · avg 54.8
- Bristol County· 161 sites · avg 52.5
- Franklin County· 120 sites · avg 49.8
- Industrial sites in Massachusetts
- Substation-Adjacent sites in Massachusetts
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Datacenter candidate sites in Middlesex, Massachusetts”, https://gridcensus.com/datacenter-sites/massachusetts/middlesex (data as of November 12, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for Middlesex, 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.