TAP170446
SubstationTennessee · TENNESSEE VALLEY AUTHORITY
At a glance
TAP170446 is an electric transmission substation in Tennessee, on TENNESSEE VALLEY AUTHORITY's transmission network. 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
Ownership
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #167298 | 69 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 19.0 mi |
| #172271 | 69 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 1.9 mi |
| #172272 | 69 kV | — | IN SERVICE | 6.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP170446, 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 |
|---|---|---|---|---|---|---|---|
| JOHNSONVILLE | Substation-Adjacent | TN | Benton County | 500 kV | 1,000 MW | 3.9 yrs | 71.8 |
| GLEASON | Substation-Adjacent | TN | Weakley County | 500 kV | 1,000 MW | 3.9 yrs | 68.3 |
| Greenfield (JOHNSONVILLE - GLEASON) | Greenfield | TN | Benton County | 500 kV | 1,000 MW | 3.9 yrs | 62.0 |
| EC Near Johnsonville | Greenfield | TN | Humphreys | — | — | 3.9 yrs | 61.0 |
| Greenfield (JOHNSONVILLE - GLEASON) | Greenfield | TN | Carroll County | 500 kV | 1,000 MW | 3.9 yrs | 60.9 |
| TAP152133 | Substation-Adjacent | TN | Henry County | 161 kV | 100 MW | 3.9 yrs | 60.7 |
| EC Near Johnsonville | Greenfield | TN | Humphreys | — | — | 3.9 yrs | 60.6 |
| TAP152211 | Substation-Adjacent | TN | Benton County | 161 kV | 100 MW | 3.9 yrs | 60.5 |
Who owns the transmission lines at TAP170446?
The 3 connected lines listed above are owned by TENNESSEE VALLEY AUTHORITY. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 27.8 miles.
How do candidate sites near TAP170446 score?
The 8 highest-scoring candidate sites within about 25 miles range from 61 to 72 on the 0–100 DC Readiness scale. They fall in Benton County, Weakley County, Humphreys, Carroll County. The Tennessee average across 2,190 scored sites is 57. 886 of those Tennessee sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP170446 substation?
TAP170446 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 TAP170446 is below the national midpoint.
How many transmission lines connect to TAP170446 substation?
3 transmission lines terminate at or pass through TAP170446 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 27.8 miles.
Who owns TAP170446 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP170446 belong to TENNESSEE VALLEY AUTHORITY. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP170446 substation located?
TAP170446 is in Tennessee at 36.2621, -88.3416. The datacenter candidate sites closest to it are in Benton County, Weakley County, Humphreys.
Are there datacenter candidate sites near TAP170446 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP170446. The highest-scoring is JOHNSONVILLE at 72/100. Across Tennessee, the average DC Readiness score is 57.
More in Tennessee
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, “TAP170446 substation, Tennessee”, https://gridcensus.com/substations/tennessee/tap170446-5bb92105 (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 TAP170446 substation, Tennessee 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.