TAP171709
SubstationVirginia · APPALACHIAN POWER CO
At a glance
TAP171709 is an electric transmission substation in Virginia, operated by APPALACHIAN POWER CO. It is classified as distribution (69–115 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 |
|---|---|---|---|---|
| #108651 | 69 kV | APPALACHIAN POWER CO | IN SERVICE | 1.1 mi |
| #174243 | 69 kV | APPALACHIAN POWER CO | IN SERVICE | 0.7 mi |
| #174244 | 69 kV | APPALACHIAN POWER CO | IN SERVICE | 0.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP171709, 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 |
| PERSON | Substation-Adjacent | NC | Person County | 500 kV | 1,000 MW | 5.3 yrs | 64.8 |
| TAP146707 | Substation-Adjacent | NC | Caswell County | 230 kV | 300 MW | 5.3 yrs | 61.4 |
| 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 |
| UNKNOWN113516 | Substation-Adjacent | NC | Person County | 230 kV | 300 MW | 5.3 yrs | 60.5 |
| UNKNOWN169869 | Substation-Adjacent | NC | Person County | 230 kV | 300 MW | 5.3 yrs | 60.3 |
| EC Near Roxboro | Greenfield | NC | Person | — | — | 5.3 yrs | 60.1 |
Who owns the transmission lines at TAP171709?
The 3 connected lines listed above are owned by APPALACHIAN POWER CO. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 2.1 miles.
How do candidate sites near TAP171709 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, Person County, Caswell County, Rockingham 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
What voltage is TAP171709 substation?
TAP171709 has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so TAP171709 is below the national midpoint.
How many transmission lines connect to TAP171709 substation?
3 transmission lines terminate at or pass through TAP171709 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 2.1 miles.
Who owns TAP171709 substation?
HIFLD lists APPALACHIAN POWER CO as the operator of TAP171709.
Where is TAP171709 substation located?
TAP171709 is in Virginia at 36.6119, -79.3981. The datacenter candidate sites closest to it are in Martinsville city, Person County, Caswell County.
Are there datacenter candidate sites near TAP171709 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP171709. 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, “TAP171709 substation, Virginia”, https://gridcensus.com/substations/virginia/tap171709-2104504e (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 TAP171709 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.