Thornton Heights Common
BrownfieldSouth Portland, Maine
Thornton Heights Common is a former brownfield site in South Portland, Maine. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 0 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 Thornton Heights Common — the environmental neighborhood, ranked by legacy grid capacity.
| Site | Former use | Legacy MW | Distance | Cleanup status |
|---|---|---|---|---|
| S D Warren Westbrook | former biomass site | 10 | 5.0 mi | — |
| Bar Mills | former hydro site | 4 | 13.4 mi | — |
| Highland Ave. Landfill | former landfill site | 1 | 0.0 mi | cleanup_complete |
| Portland Landfill Solar | former landfill site | 1 | 6.0 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 Thornton Heights Common, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| Thornton Heights Common | Brownfield | ME | Cumberland | — | 0 MW | 3.9 yrs | 67.5 |
| SOUTH GORHAM | Substation-Adjacent | ME | Cumberland County | 345 kV | 600 MW | 3.9 yrs | 65.7 |
| RAVEN FARM | Substation-Adjacent | ME | Cumberland County | 345 kV | 600 MW | 3.9 yrs | 65.6 |
| UNKNOWN133406 | Substation-Adjacent | ME | Cumberland County | 345 kV | 600 MW | 3.9 yrs | 65.4 |
| BUXTON | Substation-Adjacent | ME | Cumberland County | 345 kV | 600 MW | 3.9 yrs | 65.1 |
| SURROWIEC | Substation-Adjacent | ME | Cumberland County | 345 kV | 600 MW | 3.9 yrs | 64.4 |
| MAGUIRE ROAD | Substation-Adjacent | ME | York County | 345 kV | 600 MW | 3.9 yrs | 62.6 |
| OZ York | Greenfield | ME | York | — | — | 3.5 yrs | 62.0 |
Nearby internet exchanges
- CENTRA PWM1 - Portland, Maine (340 Cumberland)Portland, ME · 7 networks
- FirstLight Regen HutPortland, ME · 5 networks
- Consolidated - 45 Forest Ave.Portland, ME · 1 networks
See all datacenter sites in Maine →
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 Thornton Heights Common, South Portland, Maine. 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.