MARSHALLTOWN
SubstationIowa · CEDAR FALLS UTILITIES
MARSHALLTOWN is an electric transmission substation in Iowa, operated by CEDAR FALLS UTILITIES. It is classified as sub-transmission (138 kv) and connects 10 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 |
|---|---|---|---|---|
| #41414 | 161 kV | CEDAR FALLS UTILITIES | IN SERVICE | 27.1 mi |
| #14593 | 161 kV | — | IN SERVICE | 6.4 mi |
| #32643 | 161 kV | — | IN SERVICE | 0.7 mi |
| #32653 | 161 kV | — | IN SERVICE | 0.7 mi |
| #14592 | 161 kV | — | IN SERVICE | 11.7 mi |
| #22236 | 161 kV | — | IN SERVICE | 10.9 mi |
| #32609 | 161 kV | — | IN SERVICE | 0.7 mi |
| #18353 | 115 kV | — | IN SERVICE | 0.2 mi |
| #32812 | 115 kV | — | IN SERVICE | 49.6 mi |
| #35392 | 115 kV | — | IN SERVICE | 16.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MARSHALLTOWN, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN131595 | Substation-Adjacent | IA | Jasper County | 161 kV | 100 MW | 1.4 yrs | 71.1 |
| UNKNOWN160010 | Substation-Adjacent | IA | Marshall County | 161 kV | 100 MW | 1.4 yrs | 70.2 |
| UNKNOWN132118 | Substation-Adjacent | IA | Marshall County | 161 kV | 100 MW | 1.4 yrs | 67.8 |
| Greenfield (MONTEZUMA SWITCHING STATION - ) | Greenfield | IA | Jasper County | 345 kV | 600 MW | 1.4 yrs | 67.8 |
| TRAER | Substation-Adjacent | IA | Tama County | 161 kV | 100 MW | 1.4 yrs | 67.6 |
| UNKNOWN137975 | Substation-Adjacent | IA | Tama County | 161 kV | 100 MW | 1.4 yrs | 66.8 |
| ELECTRIFARM | Substation-Adjacent | IA | Black Hawk County | 161 kV | 100 MW | 1.4 yrs | 66.1 |
| UNKNOWN131065 | Substation-Adjacent | IA | Tama County | 115 kV | 100 MW | 1.4 yrs | 65.9 |
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 MARSHALLTOWN 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.