TAP138749
SubstationWest Virginia · MONONGAHELA POWER CO
At a glance
TAP138749 is an electric transmission substation in West Virginia, on MONONGAHELA POWER CO's transmission network. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #105978 | 138 kV | MONONGAHELA POWER CO | IN SERVICE | 5.0 mi |
| #120708 | 138 kV | MONONGAHELA POWER CO | IN SERVICE | 0.1 mi |
| #138925 | 138 kV | MONONGAHELA POWER CO | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP138749, 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 |
|---|---|---|---|---|---|---|---|
| HARRISON | Substation-Adjacent | WV | Harrison County | 500 kV | 1,000 MW | 3.0 yrs | 70.2 |
| PRUNTYTOWN | Substation-Adjacent | WV | Taylor County | 500 kV | 1,000 MW | 3.0 yrs | 69.0 |
| FORT MARTIN | Substation-Adjacent | WV | Monongalia County | 500 kV | 1,000 MW | 3.0 yrs | 66.1 |
| UNKNOWN132844 | Substation-Adjacent | WV | Monongalia County | 500 kV | 1,000 MW | 3.0 yrs | 66.0 |
| EC Coal Harrison County | Greenfield | WV | Harrison County | — | — | 3.0 yrs | 64.9 |
| HATFIELD | Substation-Adjacent | PA | Greene County | 500 kV | 1,000 MW | 3.6 yrs | 63.8 |
| UNKNOWN123481 | Substation-Adjacent | PA | Monongalia County | 500 kV | 1,000 MW | 3.6 yrs | 63.3 |
| UNKNOWN123487 | Substation-Adjacent | PA | Monongalia County | 500 kV | 1,000 MW | 3.6 yrs | 63.0 |
Who owns the transmission lines at TAP138749?
The 3 connected lines listed above are owned by MONONGAHELA POWER CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 5.1 miles.
How do candidate sites near TAP138749 score?
The 8 highest-scoring candidate sites within about 25 miles range from 63 to 70 on the 0–100 DC Readiness scale. They fall in Harrison County, Taylor County, Monongalia County, Greene County. 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
What voltage is TAP138749 substation?
TAP138749 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 TAP138749 is above the national midpoint.
How many transmission lines connect to TAP138749 substation?
3 transmission lines terminate at or pass through TAP138749 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 5.1 miles.
Who owns TAP138749 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP138749 belong to MONONGAHELA POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP138749 substation located?
TAP138749 is in West Virginia at 39.7180, -80.1963. The datacenter candidate sites closest to it are in Harrison County, Taylor County, Monongalia County.
Are there datacenter candidate sites near TAP138749 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP138749. The highest-scoring is HARRISON 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, “TAP138749 substation, West Virginia”, https://gridcensus.com/substations/west-virginia/tap138749-68446c39 (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 TAP138749 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.