Data center campus · 70 Inner Belt Road, Somerville, Middlesex County, Massachusetts
CoreSite BO1 (Somerville)
Operating
as of Oct. 24, 2026
A carrier-dense colocation building of more than 273,000 square feet on Inner Belt Road in Somerville, marketed by CoreSite as its Boston site. Also known as: 70 Inner Belt Road.
PowerNot statedNot reported in the records found
Floor area273,000sq ft
IT load10.7MW
Who is behind it
ProjectCoreSite BO1 (Somerville)Also: 70 Inner Belt Road
Developer and teamCoreSite
End userExpedient (cloud provider, among others)
The record, newest first
CoreSite's BO1 page lists the Somerville address and more than 273,000 square feet, with N, N+1 or 2N power redundancy. (CoreSite, Oct. 24, 2026)
Expedient's Boston location page gives 70 Inner Belt Road, 273,000 total square feet and 10.7 MW of critical IT load. (Expedient, Oct. 24, 2026)
Expedient described a new cloud data center deployment in Somerville, saying it had served the Boston area for 10 years. (Expedient, Sept. 24, 2025)
Conflicts and open questions
- The 10.7 MW figure comes from a tenant's page, not from CoreSite; it may describe the whole building.
The full record
- Status note
- Shown as an active facility on CoreSite's location page and on the page of tenant Expedient.
- Power note
- Expedient, a cloud provider based in the building, states 10.7 MW of critical IT load for the 273,000-square-foot Somerville site; CoreSite's own page gives no megawatt figure.
- Evidence
- Primary public records
- Size class
- Under 50 MW (outside main scope; kept for completeness)