TAP143479
SubstationAlabama · ALABAMA POWER CO
At a glance
TAP143479 is an electric transmission substation in Alabama, on ALABAMA POWER CO'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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #100776 | — | ALABAMA POWER CO | IN SERVICE | 3.7 mi |
| #120677 | — | ALABAMA POWER CO | IN SERVICE | 6.8 mi |
| #163563 | — | ALABAMA POWER CO | IN SERVICE | 9.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP143479, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN109405 | Substation-Adjacent | MS | Wayne County | 230 kV | 300 MW | 3.9 yrs | 61.7 |
| UNKNOWN109551 | Substation-Adjacent | MS | Clarke County | 230 kV | 300 MW | 3.9 yrs | 61.2 |
| EC Near Sweatt | Greenfield | MS | Lauderdale | — | — | 3.9 yrs | 59.3 |
| UNKNOWN109766 | Substation-Adjacent | MS | Wayne County | 115 kV | 100 MW | 3.9 yrs | 57.5 |
| TAP143462 | Substation-Adjacent | AL | Choctaw County | 115 kV | 100 MW | 3.9 yrs | 56.1 |
| TAP143461 | Substation-Adjacent | AL | Marengo County | 115 kV | 100 MW | 3.9 yrs | 56.0 |
| UNKNOWN110562 | Substation-Adjacent | AL | Choctaw County | 115 kV | 100 MW | 3.9 yrs | 55.9 |
| UNKNOWN110563 | Substation-Adjacent | AL | Choctaw County | 115 kV | 100 MW | 3.9 yrs | 55.7 |
Who owns the transmission lines at TAP143479?
The 3 connected lines listed above are owned by ALABAMA POWER CO. Their combined recorded length is about 20.2 miles.
How do candidate sites near TAP143479 score?
The 8 highest-scoring candidate sites within about 25 miles range from 56 to 62 on the 0–100 DC Readiness scale. They fall in Wayne County, Clarke County, Lauderdale, Choctaw County. The Alabama average across 3,107 scored sites is 55. 1,164 of those Alabama sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP143479 substation?
3 transmission lines terminate at or pass through TAP143479 in the HIFLD line data. Together the listed lines cover about 20.2 miles.
Who owns TAP143479 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP143479 belong to ALABAMA POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP143479 substation located?
TAP143479 is in Alabama at 31.9276, -88.3017. The datacenter candidate sites closest to it are in Wayne County, Clarke County, Lauderdale.
Are there datacenter candidate sites near TAP143479 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP143479. The highest-scoring is UNKNOWN109405 at 62/100. Across Alabama, the average DC Readiness score is 55.
More in Alabama
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, “TAP143479 substation, Alabama”, https://gridcensus.com/substations/alabama/tap143479-b1fb5382 (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 TAP143479 substation, Alabama 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.