TAP138726
SubstationPennsylvania
At a glance
TAP138726 is an electric transmission substation in Pennsylvania. It is classified as sub-transmission (138 kv) 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
Ownership
No owner is recorded for the lines that connect here.
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #109768 | 138 kV | — | IN SERVICE | 3.9 mi |
| #110184 | 138 kV | — | IN SERVICE | 0.1 mi |
| #115518 | 138 kV | — | IN SERVICE | 0.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP138726, 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 |
|---|---|---|---|---|---|---|---|
| KEYSTONE | Substation-Adjacent | PA | Armstrong County | 500 kV | 1,000 MW | 3.6 yrs | 65.9 |
| HOMER CITY | Substation-Adjacent | PA | Indiana County | 345 kV | 600 MW | 3.6 yrs | 65.9 |
| UNKNOWN123696 | Substation-Adjacent | PA | Armstrong County | 500 kV | 1,000 MW | 3.6 yrs | 65.8 |
| YUKON | Substation-Adjacent | PA | Westmoreland County | 500 kV | 1,000 MW | 3.6 yrs | 64.2 |
| UNKNOWN171935 | Substation-Adjacent | PA | Westmoreland County | 500 kV | 1,000 MW | 3.6 yrs | 64.0 |
| EC Coal Allegheny County | Greenfield | PA | Allegheny County | — | — | 3.6 yrs | 63.1 |
| EC Coal Allegheny County | Greenfield | PA | Allegheny County | — | — | 3.6 yrs | 62.8 |
| CONEMAUGH | Substation-Adjacent | PA | Indiana County | 500 kV | 1,000 MW | 3.6 yrs | 62.4 |
How do candidate sites near TAP138726 score?
The 8 highest-scoring candidate sites within about 25 miles range from 62 to 66 on the 0–100 DC Readiness scale. They fall in Armstrong County, Indiana County, Westmoreland County, Allegheny 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
What voltage is TAP138726 substation?
TAP138726 has a maximum voltage of 138 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP138726 is above the national midpoint.
How many transmission lines connect to TAP138726 substation?
3 transmission lines terminate at or pass through TAP138726 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 4.8 miles.
Where is TAP138726 substation located?
TAP138726 is in Pennsylvania at 40.3333, -79.3732. The datacenter candidate sites closest to it are in Armstrong County, Indiana County, Westmoreland County.
Are there datacenter candidate sites near TAP138726 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP138726. The highest-scoring is KEYSTONE at 66/100. 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, “TAP138726 substation, Pennsylvania”, https://gridcensus.com/substations/pennsylvania/tap138726-5b39f0ff (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 TAP138726 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.