BIG CREEK
SubstationMississippi · ALABAMA POWER CO
BIG CREEK is an electric transmission substation in Mississippi, operated by ALABAMA POWER CO. It is classified as extra-high-voltage (500 kv) and connects 9 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 |
|---|---|---|---|---|
| #20776 | 500 kV | — | IN SERVICE | 22.2 mi |
| #45822 | 230 kV | ALABAMA POWER CO | IN SERVICE | 14.1 mi |
| #26400 | 230 kV | ALABAMA POWER CO | IN SERVICE | 16.9 mi |
| #38994 | 230 kV | ALABAMA POWER CO | IN SERVICE | 11.6 mi |
| #45278 | 230 kV | ALABAMA POWER CO | IN SERVICE | 11.7 mi |
| #1939 | 115 kV | ALABAMA POWER CO | IN SERVICE | 5.1 mi |
| #9631 | 115 kV | ALABAMA POWER CO | IN SERVICE | 1.6 mi |
| #6448 | 115 kV | ALABAMA POWER CO | IN SERVICE | 7.0 mi |
| #42903 | 115 kV | ALABAMA POWER CO | IN SERVICE | 2.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of BIG CREEK, 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 |
|---|---|---|---|---|---|---|---|
| DANIEL STATION | Substation-Adjacent | MS | Jackson County | 500 kV | 1,000 MW | 1.4 yrs | 73.8 |
| UNKNOWN109076 | Substation-Adjacent | AL | Mobile County | 230 kV | 300 MW | 1.4 yrs | 70.5 |
| THEODORE | Substation-Adjacent | AL | Mobile County | 230 kV | 300 MW | 1.4 yrs | 69.3 |
| UNKNOWN109130 | Substation-Adjacent | AL | Mobile County | 230 kV | 300 MW | 3.7 yrs | 69.1 |
| BENNDALE 230 | Substation-Adjacent | MS | George County | 230 kV | 300 MW | 1.4 yrs | 69.0 |
| UNKNOWN109085 | Substation-Adjacent | AL | Mobile County | 230 kV | 300 MW | 1.4 yrs | 68.8 |
| UNKNOWN109061 | Substation-Adjacent | AL | Baldwin County | 500 kV | 1,000 MW | 3.7 yrs | 67.4 |
| BIG CREEK | Substation-Adjacent | AL | Mobile County | 500 kV | 1,000 MW | 1.4 yrs | 67.1 |
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 BIG CREEK substation, Mississippi. 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.