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
Nearby datacenter candidate sites
Scored candidate sites near Perryman, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| CONASTONE | Substation-Adjacent | MD | Harford County | 500 kV | 1,000 MW | 3.0 yrs | 77.2 |
| ROCK SPRINGS | Substation-Adjacent | MD | Harford County | 500 kV | 1,000 MW | 3.0 yrs | 76.5 |
| ROCK SPRINGS | Substation-Adjacent | MD | Harford County | 500 kV | 1,000 MW | 3.5 yrs | 76.0 |
| TAP161305 | Substation-Adjacent | MD | Harford County | 230 kV | 300 MW | 3.1 yrs | 74.5 |
| DELTA YORK EC | Substation-Adjacent | MD | Harford County | 500 kV | 1,000 MW | 3.0 yrs | 74.5 |
| CLAY | Substation-Adjacent | PA | Chester County | 230 kV | 300 MW | 3.0 yrs | 74.3 |
| PEACH BOTTOM | Substation-Adjacent | MD | Harford County | 500 kV | 1,000 MW | 3.0 yrs | 74.0 |
| HERBERT A WAGNER | Substation-Adjacent | MD | Baltimore city | 230 kV | 300 MW | 3.1 yrs | 73.2 |
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 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.