SIOUX CITY
SubstationNebraska · MIDAMERICAN ENERGY CO
SIOUX CITY is an electric transmission substation in Nebraska, operated by MIDAMERICAN ENERGY CO. It is classified as high-voltage (345 kv) and connects 4 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 |
|---|---|---|---|---|
| #30593 | 345 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 23.6 mi |
| #29685 | 230 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 0.2 mi |
| #36643 | 230 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 33.4 mi |
| #40455 | 230 kV | MIDAMERICAN ENERGY CO | IN SERVICE | 0.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SIOUX CITY, 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 |
|---|---|---|---|---|---|---|---|
| SIOUX CITY | Substation-Adjacent | IA | Plymouth County | 345 kV | 600 MW | 3.5 yrs | 77.1 |
| LEHIGH | Substation-Adjacent | NE | Dakota County | 345 kV | 600 MW | 3.5 yrs | 74.1 |
| UNKNOWN130487 | Substation-Adjacent | NE | Dakota County | 230 kV | 300 MW | 1.0 yrs | 72.5 |
| GEORGE NEAL SOUTH | Substation-Adjacent | IA | Woodbury County | 345 kV | 600 MW | 3.5 yrs | 71.7 |
| PLYMOUTH | Substation-Adjacent | IA | Plymouth County | 161 kV | 100 MW | 3.5 yrs | 71.5 |
| UNKNOWN137009 | Substation-Adjacent | IA | Plymouth County | 161 kV | 100 MW | 3.5 yrs | 70.6 |
| George Neal North | Brownfield | NE | Dakota County | — | 496 MW | 1.4 yrs | 70.4 |
| UNKNOWN130425 | Substation-Adjacent | NE | Dakota County | 161 kV | 100 MW | 3.5 yrs | 70.2 |
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 SIOUX CITY substation, Nebraska. 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.