How many data centers are in Massachusetts?

Aterio tracks 33 data centers in Massachusetts: 23 operational and 10 land bank, delayed, withdrawn or cancelled.

How much power will data centers in Massachusetts require?

Operational, under construction and announced data centers in Massachusetts add up to an estimated 164 MW of power capacity.

How does Massachusetts rank nationally for data centers?

44th of 50 states and DC by pipeline capacity, with less than 1% of the US total of 606,663 MW.

Which county in Massachusetts has the most data center capacity?

Middlesex County, with an estimated 94 MW across 13 projects, followed by Worcester County with 18 MW.

Who are the largest data center providers in Massachusetts?

By estimated capacity: Digital Realty (50 MW) and Cogent Communications (6 MW).

How many data centers are under construction in Massachusetts?

Aterio tracks no data centers under construction in Massachusetts.

Market brief, Massachusetts

Data Centers in Massachusetts

Massachusetts ranks 44th nationally for data center pipeline capacity, with 164 MW across 23 projects.

By the Aterio data team. Data as of Nov 3, 2026.

Scale

Data centers tracked: 33
Data center capacity*: 164MW
Data center space*: 1.8M sq ft
Average operational size: 85,046sq ft

Pipeline by stage

In the pipeline: 23
Operational: 23
Under construction: 0
Announced: 0

* Pipeline only: operational, under construction and announced projects. The other 10 tracked projects are land bank, delayed, withdrawn or cancelled.

How Massachusetts compares

All 23 projects in the Massachusetts pipeline are operational.

Top states by estimated MW	Est. MW	Facilities
1.Texas	152,429 MW	1,431

2.Virginia	64,312 MW	1,068

3.Utah	46,575 MW	236

4.Pennsylvania	33,239 MW	427

5.Georgia	32,790 MW	481

44.Massachusetts	164 MW	23

Top five states by pipeline capacity, and Massachusetts, estimated MW.

Where it is being built

Middlesex County alone holds 57% of the Massachusetts pipeline, 94 MW across 13 projects.

Top counties by estimated MW	Est. MW	Facilities
1.Middlesex County	94 MW	13

2.Worcester County	18 MW	3

Top two counties by estimated MW, among those with three or more projects.

Who is building

No provider dominates: the two largest providers hold 34% of the Massachusetts pipeline, and Digital Realty leads with 50 MW.

Top providers by estimated MW	Est. MW	Facilities
1.Digital Realty	50 MW	3

2.Cogent Communications	6 MW	3

Top two providers by estimated MW, among those with three or more projects.

From the dataset

Largest data centers in Massachusetts

Ranked by estimated capacity. Each facility's power and size are available in the full dataset.

1.Boston BOS14 Data CenterDigital Realty · Needham Heights, Norfolk County Operational
2.BO1 Boston Data CenterCoreSite · Somerville, Middlesex County Operational
3.BOS1 Waltham Data Center CampusCentersquare · Waltham, Middlesex County Operational
4.BOS4 Waltham Data Center CampusCentersquare · Watertown, Middlesex County Operational
5.Boston - Marlborough Data CenterTierPoint · Southborough, Worcester County Operational

Free sample

Boston BOS13 Data CenterDigital Realty · Bedford, Middlesex CountyPower 10 MWSize 106,000 sq ftOperational
Utility
Not assigned
Online
Jul 30, 2000
Marlborough 250 FacilitySungard Availability Services · Marlborough, Middlesex CountyPower 3 MWSize 23,000 sq ftOperational
Utility
Not assigned
Online
Jan 1, 2000
BOS01 Boston Data CenterEdgeConnex · Billerica, Middlesex CountyPower 1 MWSize 54,700 sq ftOperational
Utility
Not assigned
Online
Jul 30, 2016

Frequently asked questions

: Aterio tracks 33 data centers in Massachusetts: 23 operational and 10 land bank, delayed, withdrawn or cancelled.
: Operational, under construction and announced data centers in Massachusetts add up to an estimated 164 MW of power capacity.
: 44th of 50 states and DC by pipeline capacity, with less than 1% of the US total of 606,663 MW.
: Middlesex County, with an estimated 94 MW across 13 projects, followed by Worcester County with 18 MW.
: By estimated capacity: Digital Realty (50 MW) and Cogent Communications (6 MW).
: Aterio tracks no data centers under construction in Massachusetts.

Data centers in other states

US Data Centers: Market Analysis & Growth Forecast

Get exclusive insights on the rapidly expanding US data center market, with detailed analysis of facilities, power capacity and strategic expansions across Massachusetts and the rest of the US.