MARSHALL
SubstationIllinois
MARSHALL is an electric transmission substation in Illinois. It is classified as extra-high-voltage (500 kv) and connects 11 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
Operator not catalogued for this substation.
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #5492 | 500 kV | — | IN SERVICE | 28.4 mi |
| #21734 | 500 kV | — | IN SERVICE | 77.6 mi |
| #19175 | 161 kV | — | IN SERVICE | 13.8 mi |
| #19875 | 161 kV | — | — | 0.6 mi |
| #20323 | 161 kV | — | — | 0.7 mi |
| #50414 | 161 kV | — | IN SERVICE | 3.5 mi |
| #37220 | 161 kV | — | IN SERVICE | 13.7 mi |
| #42182 | 161 kV | — | IN SERVICE | 3.8 mi |
| #45809 | 161 kV | — | IN SERVICE | 5.1 mi |
| #49363 | 161 kV | — | IN SERVICE | 14.8 mi |
| #9571 | 161 kV | — | IN SERVICE | 4.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MARSHALL, 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 |
|---|---|---|---|---|---|---|---|
| CUMBERLAND 500KV | Substation-Adjacent | KY | Marshall County | 500 kV | 1,000 MW | 4.6 yrs | 76.5 |
| UNKNOWN121869 | Substation-Adjacent | IL | Massac County | 161 kV | 100 MW | 4.6 yrs | 70.4 |
| UNKNOWN155637 | Substation-Adjacent | KY | McCracken County | 161 kV | 100 MW | 4.6 yrs | 70.2 |
| UNKNOWN122861 | Substation-Adjacent | KY | McCracken County | 161 kV | 100 MW | 4.6 yrs | 69.7 |
| Greenfield (MARSHALL - CUMBERLAND 500KV) | Greenfield | KY | Calloway County | 500 kV | 1,000 MW | 4.6 yrs | 69.7 |
| UNKNOWN155633 | Substation-Adjacent | KY | Marshall County | 161 kV | 100 MW | 4.6 yrs | 69.2 |
| DOVER | Substation-Adjacent | KY | Lyon County | 161 kV | 100 MW | 4.6 yrs | 67.6 |
| UNKNOWN153828 | Substation-Adjacent | KY | Livingston County | 161 kV | 100 MW | 4.6 yrs | 67.5 |
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 MARSHALL 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.