Boston Data Centers
Boston Colocation and Massachusetts Data Centers, from One Summer Street and Somerville to Route 128 and Holyoke
Boston has about 43 data centers and some of the most expensive power in the country, so the building you choose matters more than usual. We find Boston and Massachusetts space that fits your power, connectivity and date.
Price My Boston RequirementSearches for data centers in Massachusetts usually mean one of two things: Boston colocation for a company that needs cabinets, cages or a few megawatts close to its offices, labs or customers, or the bigger question of whether Massachusetts suits large or AI deployments at all. This page covers both: where each data center in Boston sits and what it is good for, the research center in Holyoke, what power costs and the 2026 policy changes mean for you, and how to get space. If a building in New York or Northern Virginia fits better, we will say so.
Sources: Inflect market listing; Data Center Scope from EIA Electric Power Monthly; Executive Order 658 (September 2026). As of October 2026.
Boston Data Center Markets
| Area | What is there | Best for |
|---|---|---|
| Downtown Boston | One Summer Street, owned by Markley, New England's largest multi-tenant data center and the city's main carrier hotel | Interconnection, carriers, network-heavy deployments |
| Somerville | CoreSite BO1 on the Boston line, plus regional providers nearby | Enterprise colocation close to Boston and Cambridge |
| Charlestown | TierPoint's Boston data center | Colocation with cloud and disaster recovery services |
| Route 128: Waltham, Needham, Billerica | Equinix in Waltham and Billerica, and Digital Realty's suburban buildings | Enterprise and interconnection-focused deployments, larger suites |
| I-495 belt: Marlborough and beyond | 365 DataCenters in Marlborough and other suburban facilities | Lower-cost space and recovery sites outside the city |
| Western Massachusetts | The Massachusetts Green High Performance Computing Center in Holyoke | University research computing |
Source: EIA Electric Power Monthly Table 5.6.B, as compiled by Data Center Scope. Figures as of October 2026. Statewide averages, not a quote for any building. Free to cite with a link to this page.
Downtown, Somerville, Route 128 and the I-495 belt compared side by side, including space that is not advertised.
In a market where power drives the price, we compare how each building bills it, and whether part of the load belongs elsewhere.
From a few cabinets to multi-megawatt and high-density requirements, matched to buildings that can deliver them.
The operator you choose pays us. Your rate is not marked up, and you'll hear back within 24 hours.
Boston Colocation: Where the Buildings Are
Boston colocation splits between a dense core, where networks meet, and suburbs with more room and lower cost. Most companies choose by what they need nearby: carriers and partners downtown, staff and labs in Cambridge and Somerville, or room to grow along Route 128.
One Summer Street: Boston’s Carrier Hotel
One Summer Street, at 1 Summer Street in downtown Boston, is owned by Markley and is New England’s largest multi-tenant data center, with more than 40 fiber providers. It is where most carriers in the region meet, so it is the natural place for network equipment and interconnection, with production systems often kept in a larger building elsewhere and linked back by fiber. See data center connectivity for cross-connects and links between buildings.
CoreSite, Somerville
CoreSite BO1 sits on the Boston and Somerville line, one of the largest data centers in the market, close to Boston and Cambridge. See our CoreSite guide.
Equinix, Waltham and Billerica
Two Equinix data centers along Route 128, BO1 in Waltham and BO2 in Billerica, with access to the Equinix interconnection platform.
Digital Realty, Route 128
Several suburban Digital Realty buildings for enterprise colocation and larger suites. See our Digital Realty guide.
TierPoint and 365 DataCenters
TierPoint in Charlestown, with cloud and disaster recovery services, and 365 DataCenters in Marlborough on the I-495 belt.
Sources: Baxtel and Data Center Map facility listings, operator websites, October 2026.
MCA calculation from straight-line distance, about 1 ms round trip per 100 km; real fiber routes are longer. Figures as of October 2026. Free to cite with a link to this page.
New York is about 3.1 ms away, close enough for a Boston company to run production in one city and recovery in the other. See New York metro data centers and disaster recovery colocation.
Massachusetts Data Centers Beyond Boston
The Massachusetts Green High Performance Computing Center (MGHPCC)
The MGHPCC in Holyoke opened in November 2012 as a shared research computing center for Boston University, Harvard, MIT, Northeastern and the University of Massachusetts, built with the state and industry partners. It has about 33,000 square feet of computer room, a cooling plant sized for up to 10 MW of computing, and draws on Holyoke Gas and Electric, which generates most of its power from hydro and solar. It was the first university research data center to earn LEED Platinum. It serves research institutions rather than commercial colocation.
Sources: Boston University, Harvard Research Computing.
Hyperscale in Massachusetts
Massachusetts is not a hyperscale market on the scale of Virginia or North Carolina. A multi-billion-dollar AI campus was proposed in Westfield, which helped prompt the 2024 tax exemption, but local reporting in 2026 questioned whether it would go ahead. High power costs and the 2026 clean-power rules make the state a harder fit for very large loads than the markets below.
Source: BINJ (April 2026).
For GPU deployments, high-density space in existing Boston buildings suits moderate racks; the largest liquid-cooled requirements usually go to Virginia, North Carolina or Texas, where power costs less. See AI and GPU colocation, or GPU rental if renting capacity makes more sense than owning it.
Send the GPU model, rack count, power per rack and date. You'll hear back within 24 hours. The provider you choose pays us, so it costs you nothing.
Power and Policy: The 2026 Changes in Massachusetts
The 2024 tax exemption
A 20-year sales and use tax exemption on equipment, software, electricity and construction for data centers of at least 100,000 square feet, $50 million in investment and 100 jobs.
Paused in June 2026
On June 25, 2026, Governor Healey paused new applications for the exemption until protections for ratepayers are in place.
Executive Order 658
Data centers above 25 MW of peak demand must procure new clean electricity or make an alternative payment that funds ratepayer protection; regulators set that payment by the end of 2026.
Sources: Leyton on the 2024 law; Mass.gov on the pause; Executive Order 658.
Developers, landowners and investors get a fixed-fee market, power and site study, and data center due diligence on acquisitions. Engagements are paid and start in the mid five figures.
What Boston Colocation Costs
Boston prices sit above most US markets, and power is the main reason: with Massachusetts industrial electricity at about twice the national average, the per-kilowatt rate on a Boston quote carries more of the operator’s power bill. Downtown space near the carrier hotel costs more than the suburbs. Ask how power is billed, metered and capped before comparing buildings. Current figures are on the colocation pricing guide; for a megawatt or more, see wholesale colocation and the terms that matter in a data center lease.
Who Boston Data Centers Suit
Life sciences and biotech
Research data and lab systems close to Cambridge and Boston, with compliance handled at the facility level. See HIPAA compliant data centers.
Universities and hospitals
Research computing and clinical systems, with compliance documented by the facility.
Financial firms
Asset managers and insurers needing low latency to New York. See financial services colocation.
Companies leaving cloud or their own server rooms
Predictable costs for steady workloads. See cloud repatriation.
Boston and Other Markets
Boston pairs naturally with New York and Philadelphia for a Northeast footprint, and with Northern Virginia or Chicago for a national one. One approach is to keep latency-sensitive systems in Boston and put large or power-hungry workloads where power is cheaper. To link sites, see dark fiber.
How We Find Space in Boston
You send the requirement
Power, cabinet or megawatt count, connectivity, cooling and date. You'll hear back within 24 hours.
We find what fits
Which Boston and Massachusetts buildings have space and power for your date, including space that is not advertised, and whether part of the load fits better elsewhere.
We negotiate and you sign
Rate, power terms, term and exit terms negotiated before you sign. The operator you choose pays us.
Frequently Asked Questions
How many data centers are in Boston?
About 43 operational sites from 57 providers by one market count, concentrated downtown at One Summer Street, in Somerville, along Route 128 and on the I-495 belt.
Where are most data centers in Boston?
Downtown at One Summer Street, the carrier hotel; in Somerville near the Cambridge line; and in the Route 128 suburbs of Waltham, Needham and Billerica, with more along I-495 in towns like Marlborough.
What is One Summer Street in Boston?
Markley's building at 1 Summer Street, New England's largest multi-tenant data center and Boston's main carrier hotel, with more than 40 fiber providers.
Which providers have data centers in Boston?
They include CoreSite in Somerville, Equinix in Waltham and Billerica, Digital Realty in the Route 128 suburbs, TierPoint in Charlestown, 365 DataCenters in Marlborough and Markley at One Summer Street.
Why is colocation expensive in Boston?
Mostly power. Massachusetts industrial electricity averaged 19.94 cents per kWh in the first half of 2026, more than twice the 8.89-cent US average, and real estate near the city costs more too.
What is the MGHPCC?
The Massachusetts Green High Performance Computing Center in Holyoke, a research computing center opened in 2012 by BU, Harvard, MIT, Northeastern and UMass, sized for about 10 MW of computing and powered largely by hydroelectricity.
Does Massachusetts give data centers tax breaks?
A 2024 law created a 20-year sales and use tax exemption for data centers of at least 100,000 square feet, $50 million in investment and 100 jobs, but Governor Healey paused new applications on June 25, 2026.
What did Massachusetts Executive Order 658 change?
Signed in September 2026, it requires data centers above 25 MW of peak demand to procure new clean electricity or make an alternative payment that funds ratepayer protection, and asks towns to avoid nondisclosure agreements with developers.
Is there a hyperscale data center in Massachusetts?
The state is not a hyperscale market on the scale of Virginia or North Carolina. A multi-billion-dollar AI campus was proposed in Westfield, but its status was in question in 2026.
Boston or New York for colocation?
Boston for teams, labs and customers in New England; New York and New Jersey for the largest interconnection ecosystems and more choice. They are about 3 ms apart, so many companies use one as the recovery site for the other.
Is Boston good for AI and GPU colocation?
For moderate-density racks in existing buildings, yes. The largest liquid-cooled requirements usually go to Virginia, North Carolina or Texas, where power costs about half as much.
How much does colocation cost in Boston?
Above most US markets, mainly because of power. Quotes depend on power, cabinet count, term and connectivity; current market figures are on our colocation pricing guide.
Do you charge for finding Boston data center space?
No. The operator you choose pays us from its channel budget, and your rate is not marked up. You'll hear back within 24 hours.
Price Your Boston Requirement
Tell us power, cabinet or megawatt count, connectivity needs and date. You'll hear back within 24 hours with the Boston buildings that fit. No cost, no obligation, and the operator you choose pays us.
Once you have contacted an operator directly, it usually will not work through an advisor on your deal.
Nearby markets: New York, Philadelphia, Virginia, North Carolina and Chicago.
Providers: CoreSite and Digital Realty.
AI and power: AI and GPU colocation, GPU rental, direct to chip cooling and data center connectivity.
Planning: wholesale colocation, data center lease, data center cost, disaster recovery and how a data center broker works.
Developers and investors: data center consulting and data center due diligence.
