TAP161139
SubstationMississippi · TENNESSEE VALLEY AUTHORITY
At a glance
TAP161139 is an electric transmission substation in Mississippi, 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 |
|---|---|---|---|---|
| #161882 | 69 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 5.8 mi |
| #161883 | 69 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 0.5 mi |
| #166209 | 69 kV | — | IN SERVICE | 1.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP161139, 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 |
|---|---|---|---|---|---|---|---|
| WESTPOINT | Substation-Adjacent | MS | Clay County | 500 kV | 1,000 MW | 3.9 yrs | 70.3 |
| UNION | Substation-Adjacent | MS | Union County | 500 kV | 1,000 MW | 3.9 yrs | 66.2 |
| Greenfield (WESTPOINT - BROWNS FERRY) | Greenfield | MS | Clay County | 500 kV | 1,000 MW | 3.9 yrs | 62.5 |
| UNKNOWN109629 | Substation-Adjacent | MS | Clay County | 161 kV | 100 MW | 3.9 yrs | 62.3 |
| OZ Lee | Greenfield | MS | Lee | — | — | 3.9 yrs | 61.1 |
| UNKNOWN109571 | Substation-Adjacent | MS | Lowndes County | 161 kV | 100 MW | 3.9 yrs | 60.6 |
| TAP144763 | Substation-Adjacent | MS | Lowndes County | 161 kV | 100 MW | 3.9 yrs | 60.5 |
| TAP144779 | Substation-Adjacent | MS | Monroe County | 161 kV | 100 MW | 3.9 yrs | 60.4 |
Who owns the transmission lines at TAP161139?
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 8.2 miles.
How do candidate sites near TAP161139 score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 70 on the 0–100 DC Readiness scale. They fall in Clay County, Union County, Lee, Lowndes County. The Mississippi average across 3,104 scored sites is 53. 694 of those Mississippi sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP161139 substation?
TAP161139 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 TAP161139 is below the national midpoint.
How many transmission lines connect to TAP161139 substation?
3 transmission lines terminate at or pass through TAP161139 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 8.2 miles.
Who owns TAP161139 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP161139 belong to TENNESSEE VALLEY AUTHORITY. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP161139 substation located?
TAP161139 is in Mississippi at 34.0091, -88.7313. The datacenter candidate sites closest to it are in Clay County, Union County, Lee.
Are there datacenter candidate sites near TAP161139 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP161139. The highest-scoring is WESTPOINT at 70/100. Across Mississippi, the average DC Readiness score is 53.
More in Mississippi
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, “TAP161139 substation, Mississippi”, https://gridcensus.com/substations/mississippi/tap161139-a9493fc1 (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 TAP161139 substation, Mississippi 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.