TAP142721
SubstationAlabama
At a glance
TAP142721 is an electric transmission substation in Alabama. It is classified as sub-transmission (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
No owner is recorded for the lines that connect here.
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP142721, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN109244 | Substation-Adjacent | AL | Jefferson County | 500 kV | 1,000 MW | 3.9 yrs | 69.0 |
| SOUTH BESSEMER | Substation-Adjacent | AL | Bibb County | 500 kV | 1,000 MW | 3.9 yrs | 67.8 |
| CLAY | Substation-Adjacent | AL | St. Clair County | 500 kV | 1,000 MW | 3.9 yrs | 67.6 |
| MAGELLA | Substation-Adjacent | AL | Jefferson County | 230 kV | 300 MW | 3.9 yrs | 67.5 |
| WACHOVIA | Substation-Adjacent | AL | Jefferson County | 230 kV | 300 MW | 3.9 yrs | 66.8 |
| ACIPCO EAF NO.3 CU | Substation-Adjacent | AL | Jefferson County | 230 kV | 300 MW | 3.9 yrs | 66.6 |
| TAP142723 | Substation-Adjacent | AL | Jefferson County | 230 kV | 300 MW | 3.9 yrs | 66.5 |
| UNKNOWN110220 | Substation-Adjacent | AL | Jefferson County | 230 kV | 300 MW | 3.9 yrs | 66.4 |
How do candidate sites near TAP142721 score?
The 8 highest-scoring candidate sites within about 25 miles range from 66 to 69 on the 0–100 DC Readiness scale. They fall in Jefferson County, Bibb County, St. Clair 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
What voltage is TAP142721 substation?
TAP142721 has a maximum voltage of 115 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP142721 is at the national midpoint.
How many transmission lines connect to TAP142721 substation?
3 transmission lines terminate at or pass through TAP142721 in the HIFLD line data.
Where is TAP142721 substation located?
TAP142721 is in Alabama at 33.4343, -86.8780. The datacenter candidate sites closest to it are in Jefferson County, Bibb County, St. Clair County.
Are there datacenter candidate sites near TAP142721 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP142721. The highest-scoring is UNKNOWN109244 at 69/100. 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, “TAP142721 substation, Alabama”, https://gridcensus.com/substations/alabama/tap142721-b4c08c4a (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 TAP142721 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.