MARION
SubstationKentucky · KENTUCKY UTILITIES CO
MARION is an electric transmission substation in Kentucky, operated by KENTUCKY UTILITIES CO. It is classified as sub-transmission (138 kv) and connects 3 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 |
|---|---|---|---|---|
| #16490 | 161 kV | — | IN SERVICE | 18.5 mi |
| #48846 | 161 kV | KENTUCKY UTILITIES CO | IN SERVICE | 3.9 mi |
| #22314 | 138 kV | KENTUCKY UTILITIES CO | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MARION, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN125673 | Substation-Adjacent | KY | Boyle County | 138 kV | 100 MW | 3.6 yrs | 66.5 |
| UNKNOWN157134 | Substation-Adjacent | KY | Taylor County | 161 kV | 100 MW | 3.6 yrs | 63.5 |
| UNKNOWN125682 | Substation-Adjacent | KY | Nelson County | 138 kV | 100 MW | 3.0 yrs | 63.3 |
| UNKNOWN124811 | Substation-Adjacent | KY | Casey County | 161 kV | 100 MW | 3.6 yrs | 63.2 |
| Greenfield (BROWN PLANT - HARDIN) | Greenfield | KY | Washington County | 345 kV | 600 MW | 3.6 yrs | 62.7 |
| UNKNOWN124686 | Substation-Adjacent | KY | Marion County | 161 kV | 100 MW | 3.6 yrs | 62.7 |
| MARION | Substation-Adjacent | KY | Marion County | 161 kV | 100 MW | 3.6 yrs | 62.6 |
| Greenfield (BROWN PLANT - HARDIN) | Greenfield | KY | Marion County | 345 kV | 600 MW | 3.6 yrs | 62.2 |
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 MARION substation, Kentucky. 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.