SANDBURG
SubstationIowa · AMEREN ILLINOIS COMPANY
SANDBURG is an electric transmission substation in Iowa, operated by AMEREN ILLINOIS COMPANY. It is classified as high-voltage (345 kv) and connects 7 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 |
|---|---|---|---|---|
| #31681 | 345 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 32.6 mi |
| #31686 | 345 kV | AMEREN ILLINOIS COMPANY | IN SERVICE | 44.1 mi |
| #13619 | 161 kV | AMEREN ILLINOIS COMPANY | IN SERVICE | 17.7 mi |
| #31497 | 138 kV | — | IN SERVICE | 0.3 mi |
| #31493 | 138 kV | — | IN SERVICE | 0.3 mi |
| #22783 | 138 kV | — | IN SERVICE | 8.6 mi |
| #23424 | 138 kV | — | IN SERVICE | 28.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SANDBURG, 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 |
|---|---|---|---|---|---|---|---|
| OAK GROVE | Substation-Adjacent | IL | Rock Island County | 345 kV | 600 MW | 1.4 yrs | 75.3 |
| SANDBURG | Substation-Adjacent | IL | Knox County | 345 kV | 600 MW | 1.4 yrs | 71.2 |
| Greenfield (LOUISA - OAK GROVE) | Greenfield | IL | Rock Island County | 345 kV | 600 MW | 1.4 yrs | 70.7 |
| UNKNOWN122004 | Substation-Adjacent | IL | Rock Island County | 161 kV | 100 MW | 1.4 yrs | 70.6 |
| Greenfield (OAK GROVE - SANDBURG) | Greenfield | IL | Rock Island County | 345 kV | 600 MW | 1.4 yrs | 69.6 |
| Greenfield (SUB 39 - OAK GROVE) | Greenfield | IL | Rock Island County | 345 kV | 600 MW | 1.4 yrs | 69.5 |
| MERCER | Substation-Adjacent | IL | Mercer County | 161 kV | 100 MW | 1.4 yrs | 68.5 |
| Greenfield (SUB 39 - OAK GROVE) | Greenfield | IL | Rock Island County | 345 kV | 600 MW | 1.4 yrs | 68.3 |
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 SANDBURG substation, Iowa. 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.