MCDOWELL
SubstationPennsylvania · PECO ENERGY CO
At a glance
MCDOWELL is an electric transmission substation in Pennsylvania, on PECO ENERGY CO's transmission network. It is classified as unclassified and connects 3 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #108127 | — | PECO ENERGY CO | IN SERVICE | 0.6 mi |
| #108609 | — | PECO ENERGY CO | — | 0.0 mi |
| #114517 | — | PECO ENERGY CO | IN SERVICE | 0.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MCDOWELL, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| SAYREVILLE | Substation-Adjacent | NJ | Middlesex County | 500 kV | 1,000 MW | 2.7 yrs | 71.3 |
| EAST WINDSOR | Substation-Adjacent | NJ | Mercer County | 500 kV | 1,000 MW | 2.7 yrs | 68.9 |
| DEANS | Substation-Adjacent | NJ | Middlesex County | 500 kV | 1,000 MW | 2.7 yrs | 67.9 |
| BURLINGTON | Substation-Adjacent | NJ | Philadelphia County | 230 kV | 300 MW | 2.7 yrs | 67.8 |
| SMITHBURG | Substation-Adjacent | NJ | Monmouth County | 500 kV | 1,000 MW | 2.7 yrs | 67.4 |
| Lake Campus Project at Princeton University (GSHP) | Brownfield | NJ | Mercer | — | — | 2.7 yrs | 67.2 |
| Paseo Verde South Apartments | Brownfield | PA | Philadelphia | 230 kV | — | 3.6 yrs | 67.1 |
| Campbell's Soup #1 | Brownfield | NJ | Camden | — | 2 MW | 2.7 yrs | 66.8 |
Who owns the transmission lines at MCDOWELL?
The 3 connected lines listed above are owned by PECO ENERGY CO. Their combined recorded length is about 1.3 miles.
How do candidate sites near MCDOWELL score?
The 8 highest-scoring candidate sites within about 25 miles range from 67 to 71 on the 0–100 DC Readiness scale. They fall in Middlesex County, Mercer County, Philadelphia County, Monmouth County. The Pennsylvania average across 6,497 scored sites is 51.8. 886 of those Pennsylvania sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to MCDOWELL substation?
3 transmission lines terminate at or pass through MCDOWELL in the HIFLD line data. Together the listed lines cover about 1.3 miles.
Who owns MCDOWELL substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at MCDOWELL belong to PECO ENERGY CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is MCDOWELL substation located?
MCDOWELL is in Pennsylvania at 40.1405, -74.7499. The datacenter candidate sites closest to it are in Middlesex County, Mercer County, Philadelphia County.
Are there datacenter candidate sites near MCDOWELL substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of MCDOWELL. The highest-scoring is SAYREVILLE at 71/100. Across Pennsylvania, the average DC Readiness score is 51.8.
More in Pennsylvania
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “MCDOWELL substation, Pennsylvania”, https://gridcensus.com/substations/pennsylvania/mcdowell-9b2f899b (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
Every site and score for MCDOWELL substation, 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.