IBM Southbury
BrownfieldSouthbury, New Haven, Connecticut · Bloom Energy
IBM Southbury is a natural gas plant in Southbury, New Haven, Connecticut, retired 2023-12-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 1 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.
Former use & capacity
Grid hookup & remediation
Nearby brownfield & retired-generation sites
A proximity screen of other retired-plant, contaminated, and EPA-flagged sites near IBM Southbury — the environmental neighborhood, ranked by legacy grid capacity.
| Site | Former use | Legacy MW | Distance | Cleanup status |
|---|---|---|---|---|
| Bridgeport Station | coal plant | 582 | 20.9 mi | — |
| Devon Station | oil plant | 207 | 18.9 mi | — |
| Shepaug | oil plant | 49 | 4.9 mi | — |
| A L Pierce | oil plant | 23 | 19.3 mi | — |
| John Street 1, 3, 4 & 5 | oil plant | 7 | 19.3 mi | — |
| New Milford Gas Recovery | natural gas plant | 3 | 12.4 mi | — |
| Norwalk Hospital Plant | natural gas plant | 3 | 27.4 mi | — |
| Bridgeport Landfill | former landfill site | 2 | 19.7 mi | cleanup_complete |
Derived from GridCensus's retired-generator & EPA brownfield dataset. Not a substitute for an ASTM E1527 Phase I environmental radius report.
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Nearby datacenter candidate sites
Scored candidate sites near IBM Southbury, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| BRIDGEPORT RESCO | Substation-Adjacent | CT | Greater Bridgeport Planning Region | 345 kV | 600 MW | 3.9 yrs | 70.3 |
| NEW HAVEN HARBOR | Substation-Adjacent | CT | South Central Connecticut Planning Region | 345 kV | 600 MW | 3.9 yrs | 66.5 |
| FROST BRIDGE | Substation-Adjacent | CT | Naugatuck Valley Planning Region | 345 kV | 600 MW | 3.9 yrs | 66.2 |
| PLUMTREE | Substation-Adjacent | CT | Western Connecticut Planning Region | 345 kV | 600 MW | 3.9 yrs | 65.8 |
| SOUTHINGTON | Substation-Adjacent | CT | Naugatuck Valley Planning Region | 345 kV | 600 MW | 3.9 yrs | 65.4 |
| LONG MOUNTAIN | Substation-Adjacent | CT | Dutchess County | 345 kV | 600 MW | 3.9 yrs | 64.5 |
| DEVON | Substation-Adjacent | CT | Greater Bridgeport Planning Region | 115 kV | 100 MW | 3.9 yrs | 63.6 |
| SHEPAUG | Substation-Adjacent | CT | Naugatuck Valley Planning Region | 115 kV | 100 MW | 3.9 yrs | 62.5 |
Nearby internet exchanges
- CyrusOne NorwalkNorwalk, CT · 3 networks
- Cloudpath CT19 (5 Landmark Sq)Stamford, CT · 2 networks
- Cloudpath CT1 (26 Fahey St)Stamford, CT · 1 networks
- SD / Comsat Southbury Ground StationSouthbury, CT · 1 networks
See all datacenter sites in Connecticut →
Dataset updated . Screening estimates derived from public data sources.
Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for IBM Southbury, Southbury, New Haven, Connecticut. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.