MABELVALE SUBSTATION
SubstationArkansas · ENTERGY ARKANSAS INC
MABELVALE SUBSTATION is an electric transmission substation in Arkansas, operated by ENTERGY ARKANSAS INC. It is classified as extra-high-voltage (500 kv) and connects 11 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 |
|---|---|---|---|---|
| #22729 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 86.9 mi |
| #40196 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 14.7 mi |
| #27124 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 20.1 mi |
| #6639 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 30.1 mi |
| #39141 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 9.6 mi |
| #39463 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 6.2 mi |
| #40805 | 115 kV | ENTERGY ARKANSAS INC | — | 0.1 mi |
| #46870 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 7.3 mi |
| #22128 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 6.1 mi |
| #25847 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 0.5 mi |
| #36053 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 2.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MABELVALE 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 |
|---|---|---|---|---|---|---|---|
| MAGNET COVE | Substation-Adjacent | AR | Hot Spring County | 500 kV | 1,000 MW | 1.4 yrs | 73.7 |
| MAYFLOWER | Substation-Adjacent | AR | Pulaski County | 500 kV | 1,000 MW | 1.4 yrs | 73.3 |
| UNKNOWN117262 | Substation-Adjacent | AR | Hot Spring County | 500 kV | 1,000 MW | 1.4 yrs | 73.1 |
| WHITE BLUFF | Substation-Adjacent | AR | Grant County | 500 kV | 1,000 MW | 1.4 yrs | 72.9 |
| TAP149964 | Substation-Adjacent | AR | Hot Spring County | 500 kV | 1,000 MW | 1.4 yrs | 71.9 |
| TAP149963 | Substation-Adjacent | AR | Hot Spring County | 500 kV | 1,000 MW | 1.4 yrs | 70.8 |
| HOT SPRING GENERATING FACILITY | Substation-Adjacent | AR | Hot Spring County | 500 kV | 1,000 MW | 1.4 yrs | 70.2 |
| Greenfield (MABELVALE SUBSTATION - WRIGHTS) | Greenfield | AR | Pulaski County | 500 kV | 1,000 MW | 1.4 yrs | 68.9 |
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 MABELVALE 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.