MILLVILLE
SubstationWest Virginia · THE POTOMAC EDISON CO
At a glance
MILLVILLE is an electric transmission substation in West Virginia, on THE POTOMAC EDISON CO's transmission network. It is classified as unclassified and connects 1 transmission line. 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 |
|---|---|---|---|---|
| #103530 | — | THE POTOMAC EDISON CO | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MILLVILLE, 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 |
|---|---|---|---|---|---|---|---|
| BRAMBLETON | Substation-Adjacent | VA | Loudoun County | 500 kV | 1,000 MW | 5.1 yrs | 70.3 |
| GOOSE CREEK | Substation-Adjacent | VA | Loudoun County | 500 kV | 1,000 MW | 5.1 yrs | 69.9 |
| MOSBY | Substation-Adjacent | VA | Manassas Park city | 500 kV | 1,000 MW | 5.1 yrs | 69.3 |
| DULLES | Substation-Adjacent | VA | Fairfax city | 230 kV | 300 MW | 5.1 yrs | 66.8 |
| SULLY | Substation-Adjacent | VA | Fairfax city | 230 kV | 300 MW | 5.1 yrs | 66.7 |
| UNKNOWN162231 | Substation-Adjacent | VA | Loudoun County | 230 kV | 300 MW | 5.1 yrs | 66.6 |
| STERLING PARK | Substation-Adjacent | VA | Fairfax city | 230 kV | 300 MW | 5.1 yrs | 66.6 |
| WALNEY | Substation-Adjacent | VA | Fairfax city | 230 kV | 300 MW | 5.1 yrs | 66.5 |
Who owns the transmission lines at MILLVILLE?
The 1 connected line listed above is owned by THE POTOMAC EDISON CO. Their combined recorded length is about 0.1 miles.
How do candidate sites near MILLVILLE score?
The 8 highest-scoring candidate sites within about 25 miles range from 67 to 70 on the 0–100 DC Readiness scale. They fall in Loudoun County, Manassas Park city, Fairfax city. The West Virginia average across 3,734 scored sites is 52. 378 of those West Virginia sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to MILLVILLE substation?
1 transmission line terminate at or pass through MILLVILLE in the HIFLD line data. Together the listed lines cover about 0.1 miles.
Who owns MILLVILLE substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at MILLVILLE belong to THE POTOMAC EDISON CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is MILLVILLE substation located?
MILLVILLE is in West Virginia at 39.2741, -77.7869. The datacenter candidate sites closest to it are in Loudoun County, Manassas Park city, Fairfax city.
Are there datacenter candidate sites near MILLVILLE substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of MILLVILLE. The highest-scoring is BRAMBLETON at 70/100. Across West Virginia, the average DC Readiness score is 52.
More in West Virginia
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, “MILLVILLE substation, West Virginia”, https://gridcensus.com/substations/west-virginia/millville-62789e98 (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 MILLVILLE substation, West Virginia 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.