GRAND GULF
SubstationLouisiana · ENTERGY MISSISSIPPI INC
GRAND GULF is an electric transmission substation in Louisiana, operated by ENTERGY MISSISSIPPI INC. It is classified as extra-high-voltage (500 kv) and connects 4 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 |
|---|---|---|---|---|
| #4573 | 500 kV | ENTERGY MISSISSIPPI INC | — | 0.3 mi |
| #6210 | 500 kV | ENTERGY MISSISSIPPI INC | IN SERVICE | 43.7 mi |
| #28140 | 500 kV | ENTERGY MISSISSIPPI INC | IN SERVICE | 0.2 mi |
| #49921 | 500 kV | ENTERGY MISSISSIPPI INC | IN SERVICE | 21.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of GRAND GULF, 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 |
|---|---|---|---|---|---|---|---|
| Greenfield (FRANKLIN - RAY BRASWELL) | Greenfield | MS | Lincoln County | 500 kV | 1,000 MW | 1.4 yrs | 67.1 |
| Greenfield (RAY BRASWELL - BAXTER WILSON) | Greenfield | MS | Hinds County | 500 kV | 1,000 MW | 1.4 yrs | 67.1 |
| UNKNOWN110669 | Substation-Adjacent | MS | Claiborne County | 500 kV | 1,000 MW | 1.4 yrs | 66.6 |
| Greenfield (FRANKLIN - GRAND GULF) | Greenfield | MS | Lincoln County | 500 kV | 1,000 MW | 1.4 yrs | 66.3 |
| TAP142765 | Substation-Adjacent | MS | Lincoln County | 115 kV | 100 MW | 1.4 yrs | 65.3 |
| GRAND GULF | Substation-Adjacent | MS | Claiborne County | 500 kV | 1,000 MW | 1.4 yrs | 65.0 |
| Greenfield (FRANKLIN - GRAND GULF) | Greenfield | MS | Franklin County | 500 kV | 1,000 MW | 1.4 yrs | 64.8 |
| Greenfield (FRANKLIN - BOGALUSA) | Greenfield | MS | Lincoln County | 500 kV | 1,000 MW | 1.4 yrs | 64.8 |
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 GRAND GULF 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.