TAP170318
SubstationTennessee · TENNESSEE VALLEY AUTHORITY
At a glance
TAP170318 is an electric transmission substation in Tennessee, on TENNESSEE VALLEY AUTHORITY'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
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 |
|---|---|---|---|---|
| #167598 | — | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 3.7 mi |
| #172134 | — | — | IN SERVICE | 0.3 mi |
| #172136 | — | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 1.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP170318, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN115420 | Substation-Adjacent | TN | Hamilton County | 500 kV | 1,000 MW | 3.9 yrs | 69.9 |
| TAP155407 | Substation-Adjacent | TN | Bradley County | 500 kV | 1,000 MW | 3.9 yrs | 69.6 |
| UNKNOWN170313 | Substation-Adjacent | TN | Bradley County | 500 kV | 1,000 MW | 3.9 yrs | 67.7 |
| WATTS BAR POWER STATION | Substation-Adjacent | TN | Meigs County | 500 kV | 1,000 MW | 3.9 yrs | 66.9 |
| CONCORD | Substation-Adjacent | TN | Catoosa County | 230 kV | 300 MW | 3.9 yrs | 65.6 |
| BATTLEFIELD | Substation-Adjacent | GA | Catoosa County | 230 kV | 300 MW | 5.8 yrs | 64.5 |
| HAWTHORNE | Substation-Adjacent | TN | Hamilton County | 161 kV | 100 MW | 3.9 yrs | 64.3 |
| RINGGOLD | Substation-Adjacent | GA | Catoosa County | 230 kV | 300 MW | 5.8 yrs | 64.3 |
Who owns the transmission lines at TAP170318?
The 3 connected lines listed above are owned by TENNESSEE VALLEY AUTHORITY. Their combined recorded length is about 5.9 miles.
How do candidate sites near TAP170318 score?
The 8 highest-scoring candidate sites within about 25 miles range from 64 to 70 on the 0–100 DC Readiness scale. They fall in Hamilton County, Bradley County, Meigs County, Catoosa 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
How many transmission lines connect to TAP170318 substation?
3 transmission lines terminate at or pass through TAP170318 in the HIFLD line data. Together the listed lines cover about 5.9 miles.
Who owns TAP170318 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP170318 belong to TENNESSEE VALLEY AUTHORITY. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP170318 substation located?
TAP170318 is in Tennessee at 35.2014, -84.8456. The datacenter candidate sites closest to it are in Hamilton County, Bradley County, Meigs County.
Are there datacenter candidate sites near TAP170318 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP170318. The highest-scoring is UNKNOWN115420 at 70/100. 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, “TAP170318 substation, Tennessee”, https://gridcensus.com/substations/tennessee/tap170318-542022d3 (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 TAP170318 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.