FRANCISCO
SubstationIllinois · SOUTHERN INDIANA GAS & ELEC CO
FRANCISCO is an electric transmission substation in Illinois, operated by SOUTHERN INDIANA GAS & ELEC CO. It is classified as high-voltage (345 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
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #31279 | 345 kV | SOUTHERN INDIANA GAS & ELEC CO | IN SERVICE | 22.4 mi |
| #47762 | 345 kV | — | IN SERVICE | 21.8 mi |
| #1597 | 138 kV | SOUTHERN INDIANA GAS & ELEC CO | IN SERVICE | 5.7 mi |
| #7345 | 138 kV | SOUTHERN INDIANA GAS & ELEC CO | IN SERVICE | 9.1 mi |
| #8512 | 138 kV | SOUTHERN INDIANA GAS & ELEC CO | IN SERVICE | 11.1 mi |
| #22519 | 138 kV | SOUTHERN INDIANA GAS & ELEC CO | IN SERVICE | 14.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of FRANCISCO, 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 |
|---|---|---|---|---|---|---|---|
| NORTHEAST | Substation-Adjacent | IN | Vanderburgh County | 138 kV | 100 MW | 4.6 yrs | 72.8 |
| BROWN (345 KV) | Substation-Adjacent | IN | Posey County | 345 kV | 600 MW | 4.6 yrs | 72.4 |
| UNKNOWN127557 | Substation-Adjacent | IN | Vanderburgh County | 138 kV | 100 MW | 4.6 yrs | 71.8 |
| AES Petersburg | Brownfield | IN | Pike | — | 805 MW | — | 71.7 |
| PIGEON CREEK TRANS | Substation-Adjacent | IN | Vanderburgh County | 138 kV | 100 MW | 4.6 yrs | 71.4 |
| UNKNOWN127569 | Substation-Adjacent | IN | Vanderburgh County | 138 kV | 100 MW | 4.6 yrs | 71.4 |
| FRANCISCO | Substation-Adjacent | IN | Gibson County | 345 kV | 600 MW | 4.6 yrs | 71.2 |
| UNKNOWN127558 | Substation-Adjacent | IN | Vanderburgh County | 138 kV | 100 MW | 4.6 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 FRANCISCO substation, Illinois. 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.