TAP143389
SubstationLouisiana · MISSISSIPPI POWER CO
TAP143389 is an electric transmission substation in Louisiana, operated by MISSISSIPPI POWER CO. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #2234 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 0.0 mi |
| #36378 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 6.3 mi |
| #43402 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 2.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP143389, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN112544 | Substation-Adjacent | LA | St. Tammany Parish | 230 kV | 300 MW | 1.4 yrs | 72.8 |
| UNKNOWN110434 | Substation-Adjacent | MS | Hancock County | 230 kV | 300 MW | 1.4 yrs | 72.5 |
| UNKNOWN110001 | Substation-Adjacent | MS | Hancock County | 230 kV | 300 MW | 1.4 yrs | 71.8 |
| UNKNOWN112547 | Substation-Adjacent | LA | St. Tammany Parish | 230 kV | 300 MW | 1.4 yrs | 70.6 |
| UNKNOWN110000 | Substation-Adjacent | MS | Hancock County | 230 kV | 300 MW | 1.4 yrs | 70.0 |
| UNKNOWN110004 | Substation-Adjacent | MS | Hancock County | 230 kV | 300 MW | 1.4 yrs | 69.8 |
| Greenfield (MC KNIGHT - DANIEL STATION) | Greenfield | MS | Pearl River County | 500 kV | 1,000 MW | 1.4 yrs | 68.7 |
| TAP143434 | Substation-Adjacent | MS | Hancock County | 230 kV | 300 MW | 1.4 yrs | 68.3 |
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 TAP143389 substation, Louisiana. 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.