ARKANSAS NUCLEAR ONE
SubstationArkansas · ENTERGY ARKANSAS INC
ARKANSAS NUCLEAR ONE 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 |
|---|---|---|---|---|
| #22729 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 86.9 mi |
| #35222 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 32.6 mi |
| #65033 | 500 kV | ENTERGY ARKANSAS INC | — | 0.2 mi |
| #20169 | 161 kV | ENTERGY ARKANSAS INC | IN SERVICE | 8.9 mi |
| #22487 | 161 kV | ENTERGY ARKANSAS INC | IN SERVICE | 15.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ARKANSAS NUCLEAR ONE, 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 |
|---|---|---|---|---|---|---|---|
| ARKANSAS NUCLEAR ONE | Substation-Adjacent | AR | Pope County | 500 kV | 1,000 MW | 3.4 yrs | 73.6 |
| PLEASANT HILL | Substation-Adjacent | AR | Conway County | 500 kV | 1,000 MW | 1.4 yrs | 70.2 |
| Greenfield (MABELVALE SUBSTATION - ARKANSA) | Greenfield | AR | Perry County | 500 kV | 1,000 MW | 1.4 yrs | 67.7 |
| Greenfield (MABELVALE SUBSTATION - ARKANSA) | Greenfield | AR | Perry County | 500 kV | 1,000 MW | 1.4 yrs | 67.4 |
| Greenfield (FORT SMITH - ARKANSAS NUCLEAR ) | Greenfield | AR | Yell County | 500 kV | 1,000 MW | 3.4 yrs | 66.3 |
| Greenfield (FORT SMITH - ARKANSAS NUCLEAR ) | Greenfield | AR | Yell County | 500 kV | 1,000 MW | 3.4 yrs | 66.0 |
| Greenfield (MABELVALE SUBSTATION - ARKANSA) | Greenfield | AR | Perry County | 500 kV | 1,000 MW | 1.4 yrs | 66.0 |
| Greenfield (MABELVALE SUBSTATION - ARKANSA) | Greenfield | AR | Saline County | 500 kV | 1,000 MW | 1.4 yrs | 65.4 |
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.
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This page shows a public slice of the GridCensus dataset for ARKANSAS NUCLEAR ONE 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.