STONEWALL
SubstationWest Virginia · THE POTOMAC EDISON CO
STONEWALL is an electric transmission substation in West Virginia, operated by THE POTOMAC EDISON CO. It is classified as sub-transmission (138 kv) and connects 4 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 |
|---|---|---|---|---|
| #5931 | 138 kV | THE POTOMAC EDISON CO | IN SERVICE | 11.4 mi |
| #20281 | 138 kV | THE POTOMAC EDISON CO | IN SERVICE | 7.9 mi |
| #21101 | 138 kV | — | IN SERVICE | 2.1 mi |
| #45892 | 138 kV | THE POTOMAC EDISON CO | IN SERVICE | 21.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of STONEWALL, 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 |
|---|---|---|---|---|---|---|---|
| MOSBY | Substation-Adjacent | VA | Winchester city | 500 kV | 1,000 MW | 3.0 yrs | 78.7 |
| FRONT ROYAL | Substation-Adjacent | VA | Warren County | 500 kV | 1,000 MW | 3.0 yrs | 78.2 |
| NEW CREEK WIND | Substation-Adjacent | VA | Frederick County | 500 kV | 1,000 MW | 3.0 yrs | 73.2 |
| BEDINGTON | Substation-Adjacent | WV | Berkeley County | 500 kV | 1,000 MW | 3.0 yrs | 71.8 |
| MIDDLEBURG | Substation-Adjacent | VA | Loudoun County | 115 kV | 100 MW | 3.0 yrs | 70.6 |
| MEADOW BROOK | Substation-Adjacent | VA | Frederick County | 500 kV | 1,000 MW | 3.0 yrs | 70.2 |
| UNKNOWN121557 | Substation-Adjacent | VA | Winchester city | 138 kV | 100 MW | 3.0 yrs | 70.1 |
| Greenfield (MOUNT STORM - MEADOW BROOK) | Greenfield | VA | Frederick County | 500 kV | 1,000 MW | 3.0 yrs | 69.9 |
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
This page shows a public slice of the GridCensus dataset for STONEWALL substation, West Virginia. 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.