PUMPHREY
SubstationVirginia · BALTIMORE GAS & ELECTRIC CO
PUMPHREY is an electric transmission substation in Virginia, operated by BALTIMORE GAS & ELECTRIC CO. It is classified as high-voltage (230 kv) and connects 15 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 |
|---|---|---|---|---|
| #44815 | 230 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 8.8 mi |
| #6344 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 6.4 mi |
| #11059 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 8.7 mi |
| #18343 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 2.2 mi |
| #22097 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 6.4 mi |
| #24512 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 3.7 mi |
| #24553 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 3.0 mi |
| #578 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 2.9 mi |
| #27025 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 8.7 mi |
| #30605 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 9.6 mi |
| #38155 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 2.6 mi |
| #40278 | 115 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 8.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of PUMPHREY, 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 |
|---|---|---|---|---|---|---|---|
| WAUGH CHAPEL | Substation-Adjacent | MD | Anne Arundel County | 500 kV | 1,000 MW | 3.1 yrs | 77.7 |
| CONASTONE | Substation-Adjacent | MD | Baltimore County | 500 kV | 1,000 MW | 3.1 yrs | 77.1 |
| SANDY SPRING | Substation-Adjacent | MD | Howard County | 230 kV | 300 MW | 3.1 yrs | 75.8 |
| BUZZARD POINT | Substation-Adjacent | DC | District of Columbia | 230 kV | 300 MW | 3.1 yrs | 75.5 |
| POTOMAC RIVER | Substation-Adjacent | VA | Alexandria city | 230 kV | 300 MW | 3.1 yrs | 75.0 |
| TOKOMA | Substation-Adjacent | DC | District of Columbia | 230 kV | 300 MW | 3.1 yrs | 74.7 |
| HIGH RIDGE | Substation-Adjacent | MD | Howard County | 230 kV | 300 MW | 3.1 yrs | 74.7 |
| BRIGHTON | Substation-Adjacent | MD | Howard County | 500 kV | 1,000 MW | 3.1 yrs | 74.6 |
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 PUMPHREY substation, 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.