Substation-Adjacent Datacenter Sites in Pennsylvania
At a glance
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
Top substation-adjacent sites in Pennsylvania
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| CROMBY | Substation-Adjacent | Montgomery County | 230 kV | 300 MW | 3.6 yrs | 70.0 |
| EDDYSTONE | Substation-Adjacent | Delaware County | 230 kV | 300 MW | 3.6 yrs | 69.2 |
| BRUNOT ISLAND | Substation-Adjacent | Allegheny County | 345 kV | 600 MW | 3.6 yrs | 69.0 |
| WHITPAIN | Substation-Adjacent | Montgomery County | 500 kV | 1,000 MW | 3.6 yrs | 68.9 |
| LIMERICK (500KV SUB) | Substation-Adjacent | Montgomery County | 500 kV | 1,000 MW | 3.6 yrs | 68.8 |
| UNKNOWN171809 | Substation-Adjacent | Lehigh County | 500 kV | 1,000 MW | 3.6 yrs | 68.6 |
| CENTERPOINT | Substation-Adjacent | Montgomery County | 500 kV | 1,000 MW | 3.6 yrs | 68.6 |
| ELROY | Substation-Adjacent | Montgomery County | 500 kV | 1,000 MW | 3.6 yrs | 68.3 |
| SCHUYLKILL | Substation-Adjacent | Philadelphia County | 230 kV | 300 MW | 3.6 yrs | 68.3 |
| CABOT | Substation-Adjacent | Butler County | 500 kV | 1,000 MW | 3.6 yrs | 67.7 |
| WESCOSVILLE | Substation-Adjacent | Lehigh County | 500 kV | 1,000 MW | 3.6 yrs | 67.3 |
| ALBURTIS | Substation-Adjacent | Lehigh County | 500 kV | 1,000 MW | 3.6 yrs | 67.3 |
| SUNBURY | Substation-Adjacent | Northumberland County | 500 kV | 1,000 MW | 3.6 yrs | 67.1 |
| HOSENSACK | Substation-Adjacent | Lehigh County | 500 kV | 1,000 MW | 3.6 yrs | 67.0 |
| UNKNOWN123737 | Substation-Adjacent | Northampton County | 500 kV | 1,000 MW | 3.6 yrs | 66.7 |
| SUSQUEHANNA | Substation-Adjacent | Luzerne County | 500 kV | 1,000 MW | 3.6 yrs | 66.7 |
| TAP151899 | Substation-Adjacent | Allegheny County | 345 kV | 600 MW | 3.6 yrs | 66.5 |
| SOUTH READING | Substation-Adjacent | Berks County | 230 kV | 300 MW | 3.6 yrs | 66.4 |
| KEYSTONE | Substation-Adjacent | Armstrong County | 500 kV | 1,000 MW | 3.6 yrs | 66.2 |
| UNKNOWN123696 | Substation-Adjacent | Armstrong County | 500 kV | 1,000 MW | 3.6 yrs | 66.1 |
| CRANBERRY | Substation-Adjacent | Beaver County | 500 kV | 1,000 MW | 3.6 yrs | 66.1 |
| HOMER CITY | Substation-Adjacent | Indiana County | 345 kV | 600 MW | 3.6 yrs | 66.1 |
| BETZWOOD | Substation-Adjacent | Montgomery County | 230 kV | 300 MW | 3.6 yrs | 65.9 |
| PARRISH | Substation-Adjacent | Philadelphia County | 230 kV | 300 MW | 3.6 yrs | 65.9 |
| DELTA YORK EC | Substation-Adjacent | Harford County | 500 kV | 1,000 MW | 3.6 yrs | 65.9 |
How does Pennsylvania compare with other states for substation-adjacent sites?
With 886 sites, Pennsylvania ranks 16th of the 52 states that have any substation-adjacent candidate sites. Texas leads with 3,635. Nationally, substation-adjacent sites average 57.4/100 DC Readiness, above the 53.0 average across all site types. Across every site type, Pennsylvania averages 52.1, the 39th-highest of 52 states, and its candidate sites face an average interconnection-queue wait of 3.6 years.
Where are the highest-scoring substation-adjacent sites in Pennsylvania?
The top 25 range from 70.0 to 65.9 on the 0–100 DC Readiness Score. They are concentrated in Montgomery County (6), Lehigh County (4), Allegheny County (2) and Philadelphia County (2). By grid region, 25 are in PJM.
County pages: Montgomery County · Lehigh County · Allegheny County · Philadelphia County
What power, fiber and flood exposure do these substation-adjacent sites have?
Of the top 25 substation-adjacent sites in Pennsylvania, 25 have a recorded nearest-substation voltage, with a median of 500 kV; for 25 that substation is rated 230 kV or higher. Their counties have a median of 11 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 11 km. The median interconnection-queue wait in their markets is 3.6 years. None of the 3 with a mapped FEMA flood zone sits in a high-risk (A or V) zone. 5 lie within 25 km of a binding transmission constraint.
Frequently asked questions
How many substation-adjacent datacenter sites are in Pennsylvania?
GridCensus catalogs 886 substation-adjacent datacenter candidate sites in Pennsylvania, 2% of the national total for this type (16th of 52 states).
What is a substation-adjacent datacenter site?
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
What is the best substation-adjacent datacenter site in Pennsylvania?
By DC Readiness Score, CROMBY in Montgomery County ranks first at 70.0/100, followed by EDDYSTONE in Delaware County at 69.2.
Which Pennsylvania counties have the best substation-adjacent sites?
The top 25 substation-adjacent sites in Pennsylvania are concentrated in Montgomery County (6), Lehigh County (4), Allegheny County (2) and Philadelphia County (2).
How does Pennsylvania score for datacenters overall?
All 6,497 scored sites in Pennsylvania average 52.1/100 DC Readiness, the 39th-highest of 52 states, against a national average of 53.0.
More on substation-adjacent sites and Pennsylvania
Substation-Adjacent sites in other states
- Substation-Adjacent sites in Texas· 3,635 sites
- Substation-Adjacent sites in California· 1,573 sites
- Substation-Adjacent sites in Florida· 1,539 sites
- Substation-Adjacent sites in Georgia· 1,530 sites
- Substation-Adjacent sites in Oklahoma· 1,344 sites
- Substation-Adjacent sites in Washington· 1,343 sites
- Substation-Adjacent sites in Minnesota· 1,270 sites
- Substation-Adjacent sites in Kentucky· 1,261 sites
Dataset updated . Screening estimates derived from public data sources.
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 13, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Substation-Adjacent datacenter sites in Pennsylvania”, https://gridcensus.com/site-types/substation/pennsylvania (data as of November 13, 2026).
Go deeper than the public screen
Every site and score for Substation-Adjacent sites in Pennsylvania 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.