TAP155138
SubstationAlabama · ALABAMA POWER CO
TAP155138 is an electric transmission substation in Alabama, operated by ALABAMA POWER CO. It is classified as extra-high-voltage (500 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #768 | 500 kV | ALABAMA POWER CO | IN SERVICE | 45.7 mi |
| #2692 | 500 kV | — | IN SERVICE | 0.2 mi |
| #46215 | 500 kV | — | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP155138, 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 |
|---|---|---|---|---|---|---|---|
| TAP155137 | Substation-Adjacent | AL | Marshall County | 500 kV | 1,000 MW | 3.7 yrs | 74.9 |
| EAST CULLMAN | Substation-Adjacent | AL | Cullman County | 500 kV | 1,000 MW | 3.7 yrs | 72.1 |
| TAP155138 | Substation-Adjacent | AL | Cullman County | 500 kV | 1,000 MW | 3.7 yrs | 70.4 |
| UNKNOWN111073 | Substation-Adjacent | AL | Morgan County | 161 kV | 100 MW | 3.7 yrs | 70.3 |
| Greenfield (UNKNOWN109244 - TAP155138) | Greenfield | AL | Cullman County | 500 kV | 1,000 MW | 3.7 yrs | 69.7 |
| Greenfield (UNKNOWN109244 - TAP155138) | Greenfield | AL | Cullman County | 500 kV | 1,000 MW | 3.7 yrs | 69.7 |
| TAP153434 | Substation-Adjacent | AL | Morgan County | 161 kV | 100 MW | 3.7 yrs | 69.5 |
| IRONMAN | Substation-Adjacent | AL | Morgan County | 161 kV | 100 MW | 3.7 yrs | 69.2 |
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
This page shows a public slice of the GridCensus dataset for TAP155138 substation, Alabama. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.