MAYFLOWER
SubstationArkansas · ENTERGY ARKANSAS INC
MAYFLOWER is an electric transmission substation in Arkansas, operated by ENTERGY ARKANSAS INC. It is classified as extra-high-voltage (500 kv) and connects 6 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 |
|---|---|---|---|---|
| #187 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 28.5 mi |
| #6639 | 500 kV | ENTERGY ARKANSAS INC | IN SERVICE | 30.1 mi |
| #4349 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 4.1 mi |
| #16215 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 12.6 mi |
| #33443 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 8.0 mi |
| #47133 | 115 kV | ENTERGY ARKANSAS INC | IN SERVICE | 5.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MAYFLOWER, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN117348 | Substation-Adjacent | AR | Lonoke County | 500 kV | 1,000 MW | 1.4 yrs | 75.2 |
| KEO SUBSTATION | Substation-Adjacent | AR | Lonoke County | 500 kV | 1,000 MW | 1.4 yrs | 74.4 |
| MAYFLOWER | Substation-Adjacent | AR | Pulaski County | 500 kV | 1,000 MW | 1.4 yrs | 73.3 |
| Greenfield (UNKNOWN117348 - KEO SUBSTATION) | Greenfield | AR | Lonoke County | 500 kV | 1,000 MW | 1.4 yrs | 71.1 |
| PLEASANT HILL | Substation-Adjacent | AR | Conway 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 |
| UNKNOWN107775 | Substation-Adjacent | AR | Pulaski County | 115 kV | 100 MW | 1.4 yrs | 68.9 |
| UNKNOWN154333 | Substation-Adjacent | AR | Pulaski County | 115 kV | 100 MW | 1.4 yrs | 68.8 |
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.
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This page shows a public slice of the GridCensus dataset for MAYFLOWER 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.