SUB 39
SubstationIowa · MIDAMERICAN ENERGY CO
SUB 39 is an electric transmission substation in Iowa, operated by MIDAMERICAN ENERGY CO. It is classified as high-voltage (345 kv) and connects 5 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 |
|---|---|---|---|---|
| #13621 | 345 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 20.0 mi |
| #22911 | 345 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 15.6 mi |
| #19292 | 161 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 5.7 mi |
| #22879 | 161 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 10.3 mi |
| #26930 | 161 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 2.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SUB 39, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN122189 | Substation-Adjacent | IA | Clinton County | 345 kV | 600 MW | 1.4 yrs | 76.6 |
| SUB 39 | Substation-Adjacent | IL | Rock Island County | 345 kV | 600 MW | 1.4 yrs | 76.5 |
| SUB 91 | Substation-Adjacent | IA | Scott County | 345 kV | 600 MW | 1.4 yrs | 76.4 |
| OAK GROVE | Substation-Adjacent | IL | Rock Island County | 345 kV | 600 MW | 1.4 yrs | 75.3 |
| Riverside | Brownfield | IL | Rock Island | — | 141 MW | — | 74.5 |
| UNKNOWN132671 | Substation-Adjacent | IL | Rock Island County | 161 kV | 100 MW | 1.4 yrs | 73.7 |
| UNKNOWN132672 | Substation-Adjacent | IL | Rock Island County | 161 kV | 100 MW | 1.4 yrs | 73.7 |
| TAP137690 | Substation-Adjacent | IA | Scott County | 161 kV | 100 MW | 1.4 yrs | 73.4 |
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 39 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.