TAP140537
SubstationIllinois · UNION ELECTRIC CO - (MO)
TAP140537 is an electric transmission substation in Illinois, operated by UNION ELECTRIC CO - (MO). 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 |
|---|---|---|---|---|
| #3230 | 161 kV | UNION ELECTRIC CO - (MO) | IN SERVICE | 0.0 mi |
| #21744 | 161 kV | UNION ELECTRIC CO - (MO) | IN SERVICE | 0.8 mi |
| #28004 | 161 kV | UNION ELECTRIC CO - (MO) | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP140537, 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 |
|---|---|---|---|---|---|---|---|
| AUDRAIN | Substation-Adjacent | MO | Ralls County | 345 kV | 600 MW | 1.4 yrs | 73.7 |
| TAP140530 | Substation-Adjacent | MO | Ralls County | 345 kV | 600 MW | 1.4 yrs | 69.2 |
| Greenfield (TAP140530 - TAP140541) | Greenfield | MO | Ralls County | 345 kV | 600 MW | 1.4 yrs | 65.6 |
| Greenfield (TAP140530 - TAP140541) | Greenfield | MO | Ralls County | 345 kV | 600 MW | 1.4 yrs | 65.3 |
| TAP140528 | Substation-Adjacent | MO | Marion County | 161 kV | 100 MW | 1.4 yrs | 64.8 |
| Greenfield (TAP140542 - MONTGOMERY) | Greenfield | MO | Audrain County | 345 kV | 600 MW | 4.6 yrs | 64.7 |
| UNKNOWN117845 | Substation-Adjacent | MO | Lincoln County | 161 kV | 100 MW | 4.6 yrs | 64.7 |
| TAP140529 | Substation-Adjacent | MO | Ralls County | 161 kV | 100 MW | 4.6 yrs | 64.6 |
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 TAP140537 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.