WEST MEMPHIS SUBSTATION
SubstationArkansas · ENTERGY ARKANSAS INC
WEST MEMPHIS SUBSTATION is an electric transmission substation in Arkansas, operated by ENTERGY ARKANSAS INC. It is classified as extra-high-voltage (500 kv) and connects 5 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 |
|---|---|---|---|---|
| #7162 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 111.6 mi |
| #33112 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 5.6 mi |
| #22136 | 161 kV | ENTERGY ARKANSAS INC | IN SERVICE | 2.2 mi |
| #22373 | 161 kV | ENTERGY ARKANSAS INC | IN SERVICE | 18.8 mi |
| #41837 | 161 kV | ENTERGY ARKANSAS INC | IN SERVICE | 4.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of WEST MEMPHIS SUBSTATION, 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 |
|---|---|---|---|---|---|---|---|
| FREEPORT | Substation-Adjacent | MS | DeSoto County | 500 kV | 1,000 MW | 1.4 yrs | 78.6 |
| Allen | Brownfield | TN | Shelby | — | 990 MW | — | 76.6 |
| SOUTHAVEN | Substation-Adjacent | MS | DeSoto County | 500 kV | 1,000 MW | 1.4 yrs | 75.9 |
| HORN LAKE | Substation-Adjacent | MS | DeSoto County | 230 kV | 300 MW | 1.4 yrs | 74.3 |
| Greenfield (FREEPORT - CORDOVA) | Greenfield | TN | Shelby County | 500 kV | 1,000 MW | 1.4 yrs | 73.9 |
| Greenfield (FREEPORT - CORDOVA) | Greenfield | MS | DeSoto County | 500 kV | 1,000 MW | 1.4 yrs | 72.5 |
| UNKNOWN115615 | Substation-Adjacent | TN | Shelby County | 161 kV | 100 MW | 1.4 yrs | 72.3 |
| UNKNOWN115609 | Substation-Adjacent | AR | Crittenden County | 500 kV | 1,000 MW | 1.4 yrs | 72.3 |
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 WEST MEMPHIS SUBSTATION substation, Arkansas. 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.