MOUNTAIN
SubstationPennsylvania · METROPOLITAN EDISON CO
MOUNTAIN is an electric transmission substation in Pennsylvania, operated by METROPOLITAN EDISON CO. It is classified as sub-transmission (115 kv) and connects 2 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 |
|---|---|---|---|---|
| #5918 | 115 kV | METROPOLITAN EDISON CO | IN SERVICE | 0.2 mi |
| #64102 | 115 kV | METROPOLITAN EDISON CO | — | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MOUNTAIN, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN123462 | Substation-Adjacent | PA | Adams County | 500 kV | 1,000 MW | 3.0 yrs | 73.7 |
| HUNTERSTOWN POWER PLANT | Substation-Adjacent | PA | Adams County | 500 kV | 1,000 MW | 3.0 yrs | 73.7 |
| UNKNOWN147514 | Substation-Adjacent | PA | Cumberland County | 230 kV | 300 MW | 3.0 yrs | 71.7 |
| JUNIATA | Substation-Adjacent | PA | Perry County | 500 kV | 1,000 MW | 3.0 yrs | 71.7 |
| TALENENERGY MARTINS CREEK LLC WEST SHORE | Substation-Adjacent | PA | Dauphin County | 230 kV | 300 MW | 3.0 yrs | 71.4 |
| Greenfield (UNKNOWN123462 - CONEMAUGH) | Greenfield | PA | Franklin County | 500 kV | 1,000 MW | 3.0 yrs | 69.1 |
| Greenfield (THREE MILE ISLAND - JUNIATA) | Greenfield | PA | Cumberland County | 500 kV | 1,000 MW | 3.0 yrs | 68.5 |
| Greenfield (ALBURTIS - JUNIATA) | Greenfield | PA | Dauphin County | 500 kV | 1,000 MW | 3.0 yrs | 68.3 |
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 MOUNTAIN substation, Pennsylvania. 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.