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Datacenter Sites in Southeastern Connecticut County, Connecticut

Southeastern Connecticut County has 103 scored datacenter candidate sites averaging 56.8/100 DC Readiness, with a catalogued aggregate of 4,740 MW. FEMA rates local natural-hazard risk as "Relatively Low". The county has a datacenter tax incentive on record.

At a glance

Southeastern Connecticut County, Connecticut has 103 scored datacenter candidate sites averaging 56.8/100 DC Readiness, roughly in line with the Connecticut average of 56.7. It ranks 3rd of 13 Connecticut counties by number of sites and 7th by average score. The top-scoring site is Substation-Adjacent site · 041b8c77 at 68.6/100.

103
Candidate sites
56.8/100
Avg DC Readiness
4,740 MW
Catalogued capacity
theoretical aggregate
Relatively Low
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 25 in Southeastern Connecticut County

Site-selection context for Southeastern Connecticut County

Yessales_tax_exemption
Datacenter tax incentive
—
Commercial electricity
—
Industrial electricity
10
Fiber providers
Low
Water stress
$14,669
Land price / acre
700
Cooling degree days
5,800
Heating degree days
50°F
Mean annual temp

Incentive detail: Sales tax exemption on computer & data processing equipment.

How does Southeastern Connecticut County compare with other counties in Connecticut?

By number of scored sites, Southeastern Connecticut County ranks 3rd of the 13 Connecticut counties with a county page, holding 11% of the state's 919 sites. Its average DC Readiness of 56.8/100 ranks 7th in the state and is roughly in line with the national average of 53.0. Nationally it has the 316th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 78 score 55 or higher.

What types of datacenter sites are in Southeastern Connecticut County?

Industrial sites are the most common (41, 40% of the county's inventory), followed by substation-adjacent (24) and greenfield (17). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.

What are power cost, hazard, water and fiber conditions in Southeastern Connecticut County?

FEMA's National Risk Index rates the county "Relatively Low" (20). WRI water stress is low. 10 fiber providers report service in the county. The climate runs 700 cooling degree days a year with a mean temperature of 50°F. Land is valued around $14,669 an acre.

By site type

Top datacenter sites in Southeastern Connecticut County

Top datacenter sites in Southeastern Connecticut County
SiteTypeVoltageCapacityQueue waitScore
UNKNOWN135915Substation-Adjacent345 kV600 MW4.3 yrs68.6
MONTVILLESubstation-Adjacent345 kV600 MW4.3 yrs68.4
CARD`Substation-Adjacent345 kV600 MW4.3 yrs66.0
WILLIAMS STSubstation-Adjacent115 kV100 MW4.3 yrs63.4
BUDDINGTONSubstation-Adjacent115 kV100 MW4.3 yrs62.3
TAP136504Substation-Adjacent115 kV100 MW4.3 yrs62.2
TAP136506Substation-Adjacent115 kV100 MW4.3 yrs62.1
GALES FERRYSubstation-Adjacent115 kV100 MW4.3 yrs62.1
UNKNOWN136510Substation-Adjacent115 kV100 MW4.3 yrs62.0
DEADEND167078Substation-Adjacent115 kV100 MW4.3 yrs62.0
FLANDERSSubstation-Adjacent115 kV100 MW4.3 yrs62.0
TAP136497Substation-Adjacent115 kV100 MW4.3 yrs62.0
TAP136495Substation-Adjacent115 kV100 MW4.3 yrs61.9
MYSTICSubstation-Adjacent115 kV100 MW4.3 yrs61.9
TAP136492Substation-Adjacent115 kV100 MW4.3 yrs61.8
UNKNOWN133286Substation-Adjacent115 kV100 MW4.3 yrs61.6
DUDLEYSubstation-Adjacent115 kV100 MW4.3 yrs61.4
UNKNOWN133285Substation-Adjacent115 kV100 MW4.3 yrs61.4
TAP136485Substation-Adjacent115 kV100 MW4.3 yrs61.3
TAP136487Substation-Adjacent115 kV100 MW4.3 yrs61.3
TUNNELSubstation-Adjacent115 kV100 MW4.3 yrs61.2
STOCKHOUSE RDSubstation-Adjacent115 kV100 MW4.3 yrs60.4
TAP136488Substation-Adjacent115 kV100 MW4.3 yrs60.3
LISBONSubstation-Adjacent115 kV100 MW4.3 yrs60.2
Greenfield (MILLSTONE - CARD`)Greenfield345 kV600 MW4.3 yrs60.1

Every scored site in Southeastern Connecticut County

All 103 sites, best first.

Southeastern Connecticut County datacenter FAQ

How many datacenter sites are in Southeastern Connecticut County?

103 scored datacenter candidate sites, averaging 56.8/100 DC Readiness. That is the 3rd-most of 13 Connecticut counties with five or more sites.

What is the highest-scoring datacenter site in Southeastern Connecticut County?

Substation-Adjacent site · 041b8c77 scores 68.6/100 DC Readiness, the highest of the 103 scored sites in Southeastern Connecticut County (a substation-adjacent site).

Does Southeastern Connecticut County offer datacenter tax incentives?

Sales tax exemption on computer & data processing equipment.

What is the natural-hazard risk in Southeastern Connecticut County?

FEMA's National Risk Index rates Southeastern Connecticut County as "Relatively Low" (score 20).

More in Connecticut

About this data

Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Datacenter candidate sites in Southeastern Connecticut County, Connecticut”, https://gridcensus.com/datacenter-sites/connecticut/southeastern-connecticut-county (data as of November 12, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for Southeastern Connecticut County, Connecticut is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.

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