TAP146998
SubstationVirginia · APPALACHIAN POWER CO
At a glance
TAP146998 is an electric transmission substation in Virginia, on APPALACHIAN POWER CO's transmission network. It is classified as unclassified 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 |
|---|---|---|---|---|
| #101750 | — | APPALACHIAN POWER CO | IN SERVICE | 0.0 mi |
| #115332 | — | APPALACHIAN POWER CO | IN SERVICE | 10.0 mi |
| #122849 | — | APPALACHIAN POWER CO | IN SERVICE | 12.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP146998, 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 |
|---|---|---|---|---|---|---|---|
| AXTON | Substation-Adjacent | VA | Martinsville city | 765 kV | 1,000 MW | 5.1 yrs | 65.8 |
| Maple Street Substation | Brownfield | VA | Martinsville | — | 9 MW | 5.1 yrs | 62.1 |
| UNKNOWN115024 | Substation-Adjacent | NC | Guilford County | 230 kV | 300 MW | 5.3 yrs | 61.6 |
| UNKNOWN113945 | Substation-Adjacent | NC | Caswell County | 230 kV | 300 MW | 5.3 yrs | 60.8 |
| UNKNOWN113954 | Substation-Adjacent | NC | Rockingham County | 230 kV | 300 MW | 5.3 yrs | 60.7 |
| UNKNOWN111010 | Substation-Adjacent | NC | Stokes County | 230 kV | 300 MW | 5.3 yrs | 60.3 |
| UNKNOWN113955 | Substation-Adjacent | NC | Rockingham County | 230 kV | 300 MW | 5.3 yrs | 60.0 |
| EAST DANVILLE | Substation-Adjacent | VA | Danville city | 230 kV | 300 MW | 5.1 yrs | 60.0 |
Who owns the transmission lines at TAP146998?
The 3 connected lines listed above are owned by APPALACHIAN POWER CO. Their combined recorded length is about 22.6 miles.
How do candidate sites near TAP146998 score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 66 on the 0–100 DC Readiness scale. They fall in Martinsville city, Martinsville, Guilford County, Caswell County. The Virginia average across 5,871 scored sites is 52.6. 733 of those Virginia sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP146998 substation?
3 transmission lines terminate at or pass through TAP146998 in the HIFLD line data. Together the listed lines cover about 22.6 miles.
Who owns TAP146998 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP146998 belong to APPALACHIAN POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP146998 substation located?
TAP146998 is in Virginia at 36.5460, -79.6696. The datacenter candidate sites closest to it are in Martinsville city, Martinsville, Guilford County.
Are there datacenter candidate sites near TAP146998 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP146998. The highest-scoring is AXTON at 66/100. Across Virginia, the average DC Readiness score is 52.6.
More in 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, “TAP146998 substation, Virginia”, https://gridcensus.com/substations/virginia/tap146998-90599af0 (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 TAP146998 substation, 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.