Massachusetts
DataCentersExposed tracks 35 AI data centers in Massachusetts — 3 operating and 2 in the pipeline — across 3 counties, drawing 350 MW of reported power demand from 7 tracked corporate operators.
Sources: Methodology, Coverage scorecard
Reporting by Eric Keller · Updated May 29, 2026
Massachusetts at a glance
The largest footprint in Massachusetts belongs to Digital Realty Trust, Inc., behind 3 tracked facilities. CenterSquare (formerly Cyxtera), Equinix, Inc., and TierPoint, LLC round out the most active operators in the state. Many of these sites are filed under shell or project names rather than the parent's — our operator column resolves them back to the real corporate parent wherever the chain is documented.
Geographically, the buildout clusters: Middlesex County leads Massachusetts with 3 facilities and a composite risk score of 6/100. Essex County and Hampden County follow. Our county risk score weights project exposure (40%), power demand (30%), water draw (15%), and land footprint (15%); the full breakdown is shown on each county page.
Massachusetts is not done growing. 2 facilities are in the pipeline — proposed, permitted, or under construction — which is where residents still have a say at zoning hearings and in rate cases. Each pending project is a decision about land, water, electricity prices, and tax revenue that hasn't been finalized.
We also surface the accountability trail: 2 state bills mentioning data centers and 6 recent news items are tracked for Massachusetts below, pulled from LegiScan and GDELT and refreshed automatically. Legislation is linked to the counties and operators it names; news is classified by community sentiment.
2035 Buildout Outlook
Under the model's moderate-growth scenario (5%/yr annual load growth), PNNL's IM3 model sites about 2 standardized 36 MW campuses in Massachusetts by 2035 — roughly 72 MW of new electricity demand and ~70 M gal/yr of cooling water. Under the higher-growth scenario (15%/yr) that climbs to 13 campuses (468 MW). For scale, we currently track 35 real data centers in Massachusetts (350 MW of reported power).
- Low growth136 MW · ~35 M gal/yr cooling water
- Moderate growth272 MW · ~70 M gal/yr cooling water
- High growth6216 MW · ~209 M gal/yr cooling water
- Higher growth13468 MW · ~453 M gal/yr cooling water
The model assigns ~100% of these campuses' cooling to evaporative water cooling in Massachusetts (the rest to mechanical/air cooling), a split it derives from local water stress and wet-bulb temperature.
These are modeled candidate sites, not announced or permitted facilities. PNNL's IM3 model places identical 36 MW unit-campuses at feasible locations under each scenario — it shows where demand could concentrate, never a specific parcel. Figures use a market-gravity weight of 50. How the model works.
Top operators in Massachusetts
County risk leaderboard
| County | Facilities | Pipeline | Risk |
|---|---|---|---|
| Middlesex County | 3 | 1 | 6 |
| Essex County | 2 | — | 4 |
| Hampden County | 1 | 1 | — |
Pipeline & proposals
All tracked facilities
| Facility | Operator | Status | County | MW |
|---|---|---|---|---|
| Servistar Data Center | — | Proposed | Hampden | 300 |
| Everett Data Center | — | Proposed | Middlesex | — |
| Markley Group One Summer Street Boston | — | Mapped (unverified) | — | 30 |
| Expedient Boston | Expedient, LLC | Mapped (unverified) | — | 3.2 |
| 200 Quannapowitt Pkwy | — | Mapped (unverified) | — | — |
| 365 Data Centers Marlboro (MA1) | — | Mapped (unverified) | — | — |
| Amazon Com Services LLC Dtb9 | — | Mapped (unverified) | Essex | — |
| Centersquare Boston (BOS1-A) | CenterSquare (formerly Cyxtera) | Mapped (unverified) | — | — |
| Centersquare Boston (BOS4-A) | CenterSquare (formerly Cyxtera) | Mapped (unverified) | — | — |
| ColoSpace - Rockland, MA | — | Mapped (unverified) | — | — |
| ColoSpace - Somerville, MA | — | Mapped (unverified) | — | — |
| ColoSpace - Waltham, MA | — | Mapped (unverified) | — | — |
| CoreSite BO1 | American Tower Corporation | Middlesex | — | |
| Crown Castle Boston (1 Summer) | — | Mapped (unverified) | — | — |
| Crown Castle Marlboro (34 St Martin) | — | Mapped (unverified) | — | — |
| Crown Castle Springfield (1 Federal) | — | Mapped (unverified) | — | — |
| Crown Castle Worcester (474 Main) | — | Mapped (unverified) | — | — |
| DataBank Boston (BOS1) | — | Mapped (unverified) | — | — |
| Digital Realty BOS (128 1st Ave) | Digital Realty Trust, Inc. | Mapped (unverified) | — | — |
| Digital Realty Boston BOS13 (closed) | Digital Realty Trust, Inc. | Mapped (unverified) | — | — |
| Digital Realty Boston BOS16 (closed) | Digital Realty Trust, Inc. | Mapped (unverified) | — | — |
| EXA CLS Lynn | — | Mapped (unverified) | — | — |
| EdgeConneX Boston (EDCBOS01) | — | Mapped (unverified) | — | — |
| Equinix BO1 - Boston, Waltham | Equinix, Inc. | Mapped (unverified) | — | — |
| Equinix BO2 - Boston, Billerica | Equinix, Inc. | Mapped (unverified) | — | — |
| Evocative BOS1 | — | Mapped (unverified) | — | — |
| Hub Express System | — | Mapped (unverified) | — | — |
| Iron Mountain Data Center - Boston (BOS-1) | — | Mapped (unverified) | — | — |
| Lightboard ★ Massachusetts | — | Mapped (unverified) | — | — |
| Lightboard ★ New England | — | Mapped (unverified) | — | — |
| Lumen Boston | Lumen Technologies | Mapped (unverified) | — | — |
| Markley Data Center | — | Middlesex | — | |
| Navisite Andover | — | Mapped (unverified) | — | — |
| Prov.net CHF1 (Boston North) | — | Mapped (unverified) | — | — |
| TierPoint | TierPoint, LLC | Essex | — | |
| TierPoint Boston - Marlborough | TierPoint, LLC | Mapped (unverified) | — | — |