THORNTOWN
SubstationIndiana · DUKE ENERGY INDIANA, LLC
THORNTOWN is an electric transmission substation in Indiana, operated by DUKE ENERGY INDIANA, LLC. It is classified as high-voltage (230 kv) and connects 2 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 |
|---|---|---|---|---|
| #42043 | 230 kV | DUKE ENERGY INDIANA, LLC | IN SERVICE | 34.8 mi |
| #47040 | 230 kV | DUKE ENERGY INDIANA, LLC | IN SERVICE | 14.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of THORNTOWN, 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 |
|---|---|---|---|---|---|---|---|
| LAFAYETTE 230 | Substation-Adjacent | IN | Tippecanoe County | 230 kV | 300 MW | 3.0 yrs | 73.1 |
| WHITESTOWN | Substation-Adjacent | IN | Boone County | 345 kV | 600 MW | 3.0 yrs | 73.1 |
| AMO | Substation-Adjacent | IN | Hendricks County | 345 kV | 600 MW | 3.0 yrs | 72.5 |
| TAP140165 | Substation-Adjacent | IN | Hamilton County | 230 kV | 300 MW | 3.0 yrs | 71.3 |
| NUCOR | Substation-Adjacent | IN | Montgomery County | 345 kV | 600 MW | 3.0 yrs | 71.3 |
| QUALITECH | Substation-Adjacent | IN | Hendricks County | 345 kV | 600 MW | 3.0 yrs | 70.5 |
| CARMEL 146TH ST | Substation-Adjacent | IN | Hamilton County | 230 kV | 300 MW | 3.0 yrs | 70.1 |
| UNKNOWN123364 | Substation-Adjacent | IN | Tippecanoe County | 138 kV | 100 MW | 3.0 yrs | 70.1 |
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 THORNTOWN substation, Indiana. 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.