SUB T
SubstationIowa · MIDAMERICAN ENERGY CO
SUB T is an electric transmission substation in Iowa, operated by MIDAMERICAN ENERGY CO. It is classified as high-voltage (345 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 |
|---|---|---|---|---|
| #7208 | 345 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 16.9 mi |
| #38830 | 345 kV | — | IN SERVICE | 105.1 mi |
| #44279 | 345 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 25.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SUB T, 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 |
|---|---|---|---|---|---|---|---|
| SUB T | Substation-Adjacent | IA | Lee County | 345 kV | 600 MW | 1.4 yrs | 68.0 |
| UNKNOWN132660 | Substation-Adjacent | IL | Hancock County | 161 kV | 100 MW | 1.4 yrs | 66.7 |
| DENMARK | Substation-Adjacent | IA | Des Moines County | 161 kV | 100 MW | 1.4 yrs | 66.4 |
| JEFFERSON | Substation-Adjacent | IA | Henry County | 161 kV | 100 MW | 1.4 yrs | 66.0 |
| VIELE | Substation-Adjacent | IA | Lee County | 161 kV | 100 MW | 1.4 yrs | 66.0 |
| BURLINGTON (IA) | Substation-Adjacent | IA | Des Moines County | 161 kV | 100 MW | 1.4 yrs | 65.6 |
| Greenfield (TAP140530 - SUB T) | Greenfield | IA | Henry County | 345 kV | 600 MW | 1.4 yrs | 65.5 |
| Greenfield (TAP140530 - SUB T) | Greenfield | IA | Henry County | 345 kV | 600 MW | 1.4 yrs | 65.2 |
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 SUB T 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.