CANNELTON HYDROELECTRIC PLANT
SubstationIndiana · SOUTHERN INDIANA GAS & ELEC CO
CANNELTON HYDROELECTRIC PLANT is an electric transmission substation in Indiana, operated by SOUTHERN INDIANA GAS & ELEC 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 |
|---|---|---|---|---|
| #15465 | 138 kV | SOUTHERN INDIANA GAS & ELEC CO | IN SERVICE | 16.0 mi |
| #48991 | 138 kV | — | IN SERVICE | 8.2 mi |
| #49076 | 138 kV | — | — | 0.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of CANNELTON HYDROELECTRIC PLANT, 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 |
|---|---|---|---|---|---|---|---|
| JEFFERSON | Substation-Adjacent | IN | Spencer County | 765 kV | 1,000 MW | 4.6 yrs | 75.6 |
| ELMER SMITH | Substation-Adjacent | KY | Daviess County | 345 kV | 600 MW | 4.6 yrs | 74.2 |
| DAVIESS COUNTY | Substation-Adjacent | KY | Daviess County | 345 kV | 600 MW | 4.6 yrs | 72.2 |
| DAVIESS COUNTY | Substation-Adjacent | KY | Daviess County | 345 kV | 600 MW | 3.6 yrs | 71.8 |
| DAVIESS COUNTY | Substation-Adjacent | KY | Hancock County | 345 kV | 600 MW | 3.0 yrs | 71.6 |
| UNKNOWN124037 | Substation-Adjacent | KY | Daviess County | 345 kV | 600 MW | 4.6 yrs | 70.8 |
| UNKNOWN124236 | Substation-Adjacent | KY | Hancock County | 345 kV | 600 MW | 3.0 yrs | 70.2 |
| Greenfield (SULLIVAN - ROCKPORT STATION) | Greenfield | IN | Spencer County | 765 kV | 1,000 MW | 4.6 yrs | 69.9 |
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 CANNELTON HYDROELECTRIC PLANT 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.