HATTIESBURG SOUTHWEST
SubstationLouisiana · MISSISSIPPI POWER CO
HATTIESBURG SOUTHWEST is an electric transmission substation in Louisiana, operated by MISSISSIPPI POWER CO. It is classified as high-voltage (230 kv) and connects 8 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 |
|---|---|---|---|---|
| #51175 | 230 kV | MISSISSIPPI POWER CO | IN SERVICE | 38.6 mi |
| #29808 | 230 kV | — | IN SERVICE | 36.8 mi |
| #37385 | 230 kV | MISSISSIPPI POWER CO | IN SERVICE | 6.6 mi |
| #13784 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 5.0 mi |
| #13686 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 1.8 mi |
| #36200 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 3.8 mi |
| #13692 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 1.6 mi |
| #13783 | 115 kV | MISSISSIPPI POWER CO | IN SERVICE | 5.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HATTIESBURG SOUTHWEST, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN109551 | Substation-Adjacent | MS | Jones County | 230 kV | 300 MW | 1.4 yrs | 67.6 |
| HATTIESBURG SOUTHWEST | Substation-Adjacent | MS | Forrest County | 230 kV | 300 MW | 1.4 yrs | 66.6 |
| UNKNOWN109927 | Substation-Adjacent | MS | Lamar County | 115 kV | 100 MW | 1.4 yrs | 66.2 |
| UNKNOWN110228 | Substation-Adjacent | MS | Forrest County | 115 kV | 100 MW | 1.4 yrs | 65.8 |
| UNKNOWN109698 | Substation-Adjacent | MS | Covington County | 115 kV | 100 MW | 1.4 yrs | 65.5 |
| UNKNOWN110231 | Substation-Adjacent | MS | Forrest County | 161 kV | 100 MW | 1.4 yrs | 65.3 |
| UNKNOWN109941 | Substation-Adjacent | MS | Forrest County | 115 kV | 100 MW | 1.4 yrs | 65.3 |
| UNKNOWN109755 | Substation-Adjacent | MS | Forrest County | 115 kV | 100 MW | 1.4 yrs | 65.2 |
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 HATTIESBURG SOUTHWEST 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.