LOWNDES
SubstationMississippi · TENNESSEE VALLEY AUTHORITY
At a glance
LOWNDES is an electric transmission substation in Mississippi, on TENNESSEE VALLEY AUTHORITY's transmission network. It is classified as unclassified and connects 1 transmission line. 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 |
|---|---|---|---|---|
| #139290 | 500 kV | — | IN SERVICE | 21.4 mi |
| #137001 | 500 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 2.8 mi |
| #121434 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 11.8 mi |
| #135510 | 161 kV | ALABAMA POWER CO | IN SERVICE | 3.7 mi |
| #136216 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 13.1 mi |
| #144229 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 0.2 mi |
| #106776 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 4.2 mi |
| #107130 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 16.6 mi |
| #161649 | — | — | IN SERVICE | 0.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LOWNDES, 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 |
| LOWNDES | Substation-Adjacent | MS | Lowndes County | 500 kV | 1,000 MW | 3.9 yrs | 67.6 |
| CALEDONIA | Substation-Adjacent | MS | Lamar County | 500 kV | 1,000 MW | 3.9 yrs | 67.0 |
| WEST VERNON | Substation-Adjacent | AL | Lamar County | 500 kV | 1,000 MW | 3.9 yrs | 66.9 |
| Greenfield (WESTPOINT - BROWNS FERRY) | Greenfield | MS | Clay County | 500 kV | 1,000 MW | 3.9 yrs | 62.5 |
| UNKNOWN109565 | Substation-Adjacent | MS | Lowndes County | 161 kV | 100 MW | 3.9 yrs | 62.5 |
| UNKNOWN109567 | Substation-Adjacent | MS | Lowndes County | 161 kV | 100 MW | 3.9 yrs | 62.5 |
| TAP169476 | Substation-Adjacent | MS | Lowndes County | 161 kV | 100 MW | 3.9 yrs | 62.4 |
Who owns the transmission lines at LOWNDES?
The 9 connected lines listed above are owned by TENNESSEE VALLEY AUTHORITY, ALABAMA POWER CO. Line voltages range from 161 kV to 500 kV. Their combined recorded length is about 74.1 miles.
How do candidate sites near LOWNDES score?
The 8 highest-scoring candidate sites within about 25 miles range from 62 to 70 on the 0–100 DC Readiness scale. They fall in Clay County, Lowndes County, Lamar 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
How many transmission lines connect to LOWNDES substation?
1 transmission line terminate at or pass through LOWNDES in the HIFLD line data. The connected lines listed here run at 500 kV, 161 kV. Together the listed lines cover about 74.1 miles.
Who owns LOWNDES substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at LOWNDES belong to TENNESSEE VALLEY AUTHORITY, and others to ALABAMA POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is LOWNDES substation located?
LOWNDES is in Mississippi at 33.6473, -88.3125. The datacenter candidate sites closest to it are in Clay County, Lowndes County, Lamar County.
Are there datacenter candidate sites near LOWNDES substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of LOWNDES. 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, “LOWNDES substation, Mississippi”, https://gridcensus.com/substations/mississippi/lowndes-3f0ca612 (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 LOWNDES 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.