Data Centers in Connecticut
5 verified facilities · about 15 estimated ·
Connecticut data centers at a glance
As of September 2026, Connecticut has 5 data centers verified in OpenStreetMap and an estimated 15 in total. That ranks 35th among the 48 states and territories in the directory and is 0.3% of all verified US facilities. Facilities cluster in Glastonbury (1), Norwalk (1), and Stamford (1). The largest operators by mapped sites are CyrusOne (1) and Digital Realty (1), out of 2 named operators. Malachi.Energy does not currently track a named mega project in Connecticut; the tracked list covers announced campuses of roughly 100 MW and up where both planned capacity and investment are public.
Facility counts: OpenStreetMap contributors (ODbL), scaled to Baxtel data center market directory totals. Mega projects: Malachi.Energy tally of public filings and announcements. Method notes on the methodology page. See also Connecticut electricity rates.
Verified
5
OSM-mapped facilities
Estimated
~15
Scaled to industry totals
Top hub
Glastonbury
1 verified facilities
Mega projects
None
No tracked projects over 100 MW
Map of data centers in Connecticut
County boundaries, every verified facility, and tracked mega projects sized by planned capacity. Downloads carry the source line and dataset date for citation.
Top operators in Connecticut
By OSM-verified facility count
- 1.CyrusOne1
- 2.Digital Realty1
Key hubs in Connecticut
Cities with the most verified facilities
- 1.Glastonbury1
- 2.Norwalk1
- 3.Stamford1
- 4.Trumbull1
- 5.Wallingford1
All verified data centers in Connecticut
5 facilities mapped in OpenStreetMap, sorted by city. Unnamed entries are mapped buildings tagged as data centers without a public name.
| Name | Operator | City | Address |
|---|---|---|---|
| Ergonomic Group | Unknown | Glastonbury | 65 Kreiger Lane |
| Unnamed facility | CyrusOne | Norwalk | 6 Norden Place |
| amnet Data Center | Unknown | Stamford | 26 Fahey Street |
| Digital Realty New York HVN10 | Digital Realty | Trumbull | 80 Merritt Boulevard |
| Unnamed facility | Unknown | Wallingford | 20 Alexander Drive |
Frequently asked questions
How many data centers are in Connecticut?
Connecticut has 5 data centers verified in OpenStreetMap as of September 2026, and an estimated 15 in total once unmapped facilities are scaled in against Baxtel's industry count. That places it 35th of 48 states and territories by verified count.
Where are the data centers in Connecticut?
The largest concentrations in Connecticut are Glastonbury with 1 verified facility, Norwalk with 1 verified facility, Stamford with 1 verified facility, Trumbull with 1 verified facility, and Wallingford with 1 verified facility. The full table below lists every verified facility in the state with its operator and address.
Who operates the most data centers in Connecticut?
By number of OSM-verified facilities, the largest data center operators in Connecticut are CyrusOne (1) and Digital Realty (1). This ranks mapped sites, not megawatts, so a hyperscaler with many small buildings can outrank a colocation provider with one large campus.
What large data centers are being built in Connecticut?
Malachi.Energy does not currently track a named mega project in Connecticut; the tracked list covers announced campuses of roughly 100 MW and up where both planned capacity and investment are public. Smaller and unannounced facilities still appear in the verified directory above. Nationally, US data centers used about 192 TWh in 2024, 4.7% of US electricity.
Facility data sourced from OpenStreetMap contributors (ODbL). Estimated totals scaled to Baxtel industry counts. Mega project data from public filings and announcements. Dataset last updated . Built by Malachi.Energy.