Perryman
BrownfieldHarford County, Harford, Maryland · Constellation Power Source Generation, LLC
Perryman is a oil plant in Harford County, Harford, Maryland, retired 2016-02-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 53 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
Site conditions & market — Harford County
County-level intelligence for this site's location — the power economics, water, hazard, connectivity, and workforce a developer screens before ever visiting. Assembled from FEMA NRI, BLS QCEW, FCC BDC, USGS water-use, and EIA.
Market & workforce
Power economics & interconnection
Water & cooling
Hazard, flood & connectivity
County-level context — address-level utility offerings and flood zoning vary within the county. Confirm site-specific service with the utility and a Phase I ESA.
Nearby brownfield & retired-generation sites
A proximity screen of other retired-plant, contaminated, and EPA-flagged sites near Perryman — the environmental neighborhood, ranked by legacy grid capacity.
| Site | Former use | Legacy MW | Distance | Cleanup status |
|---|---|---|---|---|
| Essential Power Rock Springs LLC | natural gas plant | 390 | 19.4 mi | — |
| Riverside (MD) | natural gas plant | 257 | 21.1 mi | — |
| Notch Cliff | natural gas plant | 144 | 15.4 mi | — |
| Herbert A Wagner | coal plant | 136 | 24.5 mi | — |
| York Energy Center | natural gas plant | 120 | 20.9 mi | — |
| Gould Street | natural gas plant | 104 | 23.8 mi | — |
| Domino Sugar Baltimore | natural gas plant | 3 | 23.1 mi | — |
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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Track Perryman
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Nearby datacenter candidate sites
Scored candidate sites near Perryman, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| ROCK SPRINGS | Substation-Adjacent | MD | Harford County | 500 kV | 1,000 MW | 3.8 yrs | 68.9 |
| DELTA YORK EC | Substation-Adjacent | PA | Harford County | 500 kV | 1,000 MW | 3.8 yrs | 65.8 |
| UNKNOWN123195 | Substation-Adjacent | MD | Baltimore city | 230 kV | 300 MW | 3.8 yrs | 65.0 |
| CONASTONE | Substation-Adjacent | MD | Harford County | 500 kV | 1,000 MW | 3.8 yrs | 64.9 |
| EC Coal Anne Arundel County | Greenfield | MD | Anne Arundel County | — | — | 3.5 yrs | 64.3 |
| BRANDON SHORES | Substation-Adjacent | MD | Baltimore city | 230 kV | 300 MW | 3.8 yrs | 64.2 |
| PEACH BOTTOM | Substation-Adjacent | PA | Harford County | 500 kV | 1,000 MW | 3.8 yrs | 64.1 |
| PEACH BOTTOM | Substation-Adjacent | PA | Harford County | 500 kV | 1,000 MW | 3.8 yrs | 64.1 |
Nearby internet exchanges
- TierPoint BaltimoreBaltimore, MD · 7 networks
- Zayo Baltimore - 111 Market PlBaltimore, MD · 4 networks
- Crown Castle Baltimore (111 Market, 700 E Pratt)Baltimore, MD · 4 networks
- AiNET MD-300LBaltimore, MD · 3 networks
See all datacenter sites in Maryland →
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 Perryman, Harford County, Harford, Maryland. 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.