JACK WATSON
SubstationLouisiana · MISSISSIPPI POWER CO
JACK WATSON is an electric transmission substation in Louisiana, operated by MISSISSIPPI POWER CO. It is classified as high-voltage (230 kv) and connects 13 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 |
|---|---|---|---|---|
| #33318 | 230 kV | MISSISSIPPI POWER CO | IN SERVICE | 40.7 mi |
| #40796 | 230 kV | MISSISSIPPI POWER CO | IN SERVICE | 23.5 mi |
| #44904 | 230 kV | MISSISSIPPI POWER CO | — | 0.1 mi |
| #19889 | 230 kV | MISSISSIPPI POWER CO | IN SERVICE | 9.3 mi |
| #29661 | 230 kV | MISSISSIPPI POWER CO | IN SERVICE | 18.0 mi |
| #29543 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 2.6 mi |
| #44921 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 4.8 mi |
| #327 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 3.4 mi |
| #45078 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 7.8 mi |
| #1207 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 3.1 mi |
| #19173 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 5.2 mi |
| #24136 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 3.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of JACK WATSON, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN110550 | Substation-Adjacent | MS | Jackson County | 230 kV | 300 MW | 1.4 yrs | 70.5 |
| JACK WATSON | Substation-Adjacent | MS | Harrison County | 230 kV | 300 MW | 1.4 yrs | 69.9 |
| UNKNOWN110004 | Substation-Adjacent | MS | Hancock County | 230 kV | 300 MW | 1.4 yrs | 69.8 |
| UNKNOWN110553 | Substation-Adjacent | MS | Harrison County | 230 kV | 300 MW | 1.4 yrs | 69.3 |
| Greenfield (MC KNIGHT - DANIEL STATION) | Greenfield | MS | Harrison County | 500 kV | 1,000 MW | 1.4 yrs | 67.7 |
| UNKNOWN110507 | Substation-Adjacent | MS | Harrison County | 115 kV | 100 MW | 1.4 yrs | 67.3 |
| TAP142799 | Substation-Adjacent | MS | Jackson County | 115 kV | 100 MW | 1.4 yrs | 66.7 |
| UNKNOWN110015 | Substation-Adjacent | MS | Harrison County | 115 kV | 100 MW | 1.4 yrs | 66.2 |
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 JACK WATSON 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.