TAP136887
SubstationWest Virginia · MONONGAHELA POWER CO
At a glance
TAP136887 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 |
|---|---|---|---|---|
| #105375 | 138 kV | MONONGAHELA POWER CO | IN SERVICE | 18.8 mi |
| #106580 | 138 kV | MONONGAHELA POWER CO | IN SERVICE | 0.0 mi |
| #123673 | 138 kV | MONONGAHELA POWER CO | IN SERVICE | 21.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP136887, 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 |
|---|---|---|---|---|---|---|---|
| KANAWHA RIVER | Substation-Adjacent | WV | Kanawha County | 345 kV | 600 MW | 3.0 yrs | 68.3 |
| EC Coal Gilmer County | Greenfield | WV | Gilmer County | — | — | 3.0 yrs | 61.8 |
| EC FFE Gilmer County | Greenfield | WV | Gilmer County | — | — | 3.0 yrs | 59.9 |
| TAP171982 | Substation-Adjacent | WV | Kanawha County | 138 kV | 100 MW | 3.0 yrs | 59.7 |
| EC Near Kanawha River | Greenfield | WV | Kanawha | — | — | 3.0 yrs | 59.6 |
| EC Near Kanawha River | Greenfield | WV | Kanawha | — | — | 3.0 yrs | 59.2 |
| EC FFE Clay County | Greenfield | WV | Clay County | — | — | 3.0 yrs | 58.6 |
| EC Coal Gilmer County | Greenfield | WV | Gilmer County | — | — | 3.0 yrs | 58.4 |
Who owns the transmission lines at TAP136887?
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 40.3 miles.
How do candidate sites near TAP136887 score?
The 8 highest-scoring candidate sites within about 25 miles range from 58 to 68 on the 0–100 DC Readiness scale. They fall in Kanawha County, Gilmer County, Kanawha, Clay 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 TAP136887 substation?
TAP136887 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 TAP136887 is above the national midpoint.
How many transmission lines connect to TAP136887 substation?
3 transmission lines terminate at or pass through TAP136887 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 40.3 miles.
Who owns TAP136887 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP136887 belong to MONONGAHELA POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP136887 substation located?
TAP136887 is in West Virginia at 38.5910, -81.0277. The datacenter candidate sites closest to it are in Kanawha County, Gilmer County, Kanawha.
Are there datacenter candidate sites near TAP136887 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP136887. The highest-scoring is KANAWHA RIVER at 68/100. 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, “TAP136887 substation, West Virginia”, https://gridcensus.com/substations/west-virginia/tap136887-bbcfc22c (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 TAP136887 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.