TAP154020
SubstationWest Virginia · APPALACHIAN POWER CO
At a glance
TAP154020 is an electric transmission substation in West Virginia, on APPALACHIAN 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 |
|---|---|---|---|---|
| #132005 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 0.0 mi |
| #134217 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 8.7 mi |
| #134353 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 3.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP154020, 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 |
|---|---|---|---|---|---|---|---|
| WYOMING | Substation-Adjacent | WV | Wyoming County | 765 kV | 1,000 MW | 3.0 yrs | 64.0 |
| EC Coal Mercer County | Greenfield | WV | Mercer County | — | — | 3.0 yrs | 59.7 |
| EC Coal Raleigh County | Greenfield | WV | Raleigh County | — | — | 3.0 yrs | 59.4 |
| TAP155304 | Substation-Adjacent | WV | McDowell County | 138 kV | 100 MW | 3.0 yrs | 58.5 |
| SOURWOOD | Substation-Adjacent | WV | McDowell County | 138 kV | 100 MW | 3.0 yrs | 58.2 |
| PAD FORK | Substation-Adjacent | WV | McDowell County | 138 kV | 100 MW | 3.0 yrs | 58.2 |
| JIM BRANCH | Substation-Adjacent | WV | McDowell County | 138 kV | 100 MW | 3.0 yrs | 58.1 |
| EC Coal McDowell County | Greenfield | WV | McDowell County | — | — | 3.0 yrs | 57.9 |
Who owns the transmission lines at TAP154020?
The 3 connected lines listed above are owned by APPALACHIAN POWER CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 11.9 miles.
How do candidate sites near TAP154020 score?
The 8 highest-scoring candidate sites within about 25 miles range from 58 to 64 on the 0–100 DC Readiness scale. They fall in Wyoming County, Mercer County, Raleigh County, McDowell 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 TAP154020 substation?
TAP154020 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 TAP154020 is above the national midpoint.
How many transmission lines connect to TAP154020 substation?
3 transmission lines terminate at or pass through TAP154020 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 11.9 miles.
Who owns TAP154020 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP154020 belong to APPALACHIAN POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP154020 substation located?
TAP154020 is in West Virginia at 37.5890, -81.6104. The datacenter candidate sites closest to it are in Wyoming County, Mercer County, Raleigh County.
Are there datacenter candidate sites near TAP154020 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP154020. The highest-scoring is WYOMING at 64/100. 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, “TAP154020 substation, West Virginia”, https://gridcensus.com/substations/west-virginia/tap154020-5a76ad20 (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 TAP154020 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.