How many data centers are in Connecticut?

More Than Just Parks tracks 34 active data center facilities in Connecticut, each citing a public source: 25 operating, 2 under construction and 7 proposed. 3 more were canceled, withdrawn, suspended or blocked.

Where are the data centers in Connecticut?

Connecticut's data centers are in 6 counties. The most are in Fairfield County (10), New Haven County (10) and Hartford County (6). The busiest places are around Stamford, Dayville and New London.

How much electricity do Connecticut's data centers use?

We don’t publish a state total, and the reason matters: about seven in ten facilities here never disclose a capacity, so any sum would look like a census of Connecticut's data center load while leaving out the sites that stayed quiet. Each facility page shows the figure its own source states. A single large campus can draw as much power as a small city.

Are Connecticut data centers near protected land?

15 of the tracked facilities in Connecticut sit within 10 miles of protected public land, measured to the real boundary of the nearest national park, wilderness area, wildlife refuge or conservation area; none sit within a single mile.

Which county in Connecticut has the most data centers?

Fairfield County has the most, with 10 tracked data centers, followed by New Haven County (10) and Hartford County (6).

Are there proposed data centers in Connecticut?

Yes. We track 7 proposed data centers in Connecticut, including Global Common fuel-cell data center, Geer Street, Cromwell, Gotspace Bozrah Campus and ReNew Developers Data Center Campus (Old Amston Road, Colchester). 3 of them sit within 10 miles of protected public land.

Who is building data centers in Connecticut?

The most active operators in Connecticut are Gotspace Data Partners (5 sites), CyrusOne (2 sites) and Lumen Technologies (2 sites), counted by sites, not megawatts.

34 Data Centers in Connecticut (CT): Map, Proposed Sites

Find data centers near you in Connecticut

Type your ZIP code or your town and you’ll see what’s proposed, going up and already running near it, and how close each one sits to protected land. A ZIP opens its own page you can bookmark and share.

Know of a data center we’re missing? Tell us.

Data centers near you in Connecticut

Show 2 more

Data centers near you in every state

Who’s building in Connecticut

Proposed data centers in Connecticut

7 proposed data centers are on the record in Connecticut. By county, then name.

Data centers under construction in Connecticut

2 data centers are under construction in Connecticut. By county, then name.

Data centers operating in Connecticut

25 data centers are operating in Connecticut. By county, then name.

Projects stopped or paused

3 proposed projects in Connecticut were voted down, withdrawn, canceled or held by a moratorium. Each project’s page links the source for how it ended.

Closest to protected land

Distance is to the boundary of the nearest protected unit; open a facility to see which.

Share this page

Map of data centers in Connecticut

Map of the 34 data centers in Connecticut tracked by More Than Just Parks, updated November 2026 — Every light is a facility we can tie to a public source, drawn November 2026. Map by More Than Just Parks, free to share and embed with the credit link.

Download

Every tracked facility in Connecticut

34 facilities across 6 counties, the busiest first. Open a county to see its facilities; each one opens its own record.

Fairfield County 10 operating10

New Haven County 1 proposed 9 operating10

Hartford County 1 under construction 5 operating6

New London County 4 proposed 1 under construction5

Middlesex County 1 proposed 1 operating2

Windham County 1 proposed1

Killingly Data Center CampusCampus

Data centers in Connecticut: common questions

How many data centers are in Connecticut?: More Than Just Parks tracks 34 active data center facilities in Connecticut, each citing a public source: 25 operating, 2 under construction and 7 proposed. 3 more were canceled, withdrawn, suspended or blocked.
Where are the data centers in Connecticut?: Connecticut's data centers are in 6 counties. The most are in Fairfield County (10), New Haven County (10) and Hartford County (6). The busiest places are around Stamford, Dayville and New London.
How much electricity do Connecticut's data centers use?: We don’t publish a state total, and the reason matters: about seven in ten facilities here never disclose a capacity, so any sum would look like a census of Connecticut's data center load while leaving out the sites that stayed quiet. Each facility page shows the figure its own source states. A single large campus can draw as much power as a small city.
Are Connecticut data centers near protected land?: 15 of the tracked facilities in Connecticut sit within 10 miles of protected public land, measured to the real boundary of the nearest national park, wilderness area, wildlife refuge or conservation area; none sit within a single mile.
Which county in Connecticut has the most data centers?: Fairfield County has the most, with 10 tracked data centers, followed by New Haven County (10) and Hartford County (6).
Are there proposed data centers in Connecticut?: Yes. We track 7 proposed data centers in Connecticut, including Global Common fuel-cell data center, Geer Street, Cromwell, Gotspace Bozrah Campus and ReNew Developers Data Center Campus (Old Amston Road, Colchester). 3 of them sit within 10 miles of protected public land.
Who is building data centers in Connecticut?: The most active operators in Connecticut are Gotspace Data Partners (5 sites), CyrusOne (2 sites) and Lumen Technologies (2 sites), counted by sites, not megawatts.

Every facility on this page cites a public record we can link to: industry reporting, facility trackers, company announcements, and local planning and utility filings, cross-referenced against protected public land. Part of the Data Center Tracker from More Than Just Parks. A facility shows a capacity only where its own source states one.

Data centers in Connecticut