MARSHALLTOWN GENERATING STATION
SubstationIowa
MARSHALLTOWN GENERATING STATION is an electric transmission substation in Iowa. It is classified as sub-transmission (138 kv) and connects 2 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
Ownership & operation
Operator not catalogued for this substation.
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #32643 | 161 kV | — | IN SERVICE | 0.7 mi |
| #32654 | 161 kV | — | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MARSHALLTOWN GENERATING STATION, 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 |
|---|---|---|---|---|---|---|---|
| Greenfield (MONTEZUMA SWITCHING STATION - ) | Greenfield | IA | Jasper County | 345 kV | 600 MW | 1.4 yrs | 71.4 |
| 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 |
| JASPER | Substation-Adjacent | IA | Jasper County | 161 kV | 100 MW | 1.4 yrs | 69.4 |
| FPL ENERGY STORY WIND LLC | Substation-Adjacent | IA | Story County | 161 kV | 100 MW | 1.4 yrs | 68.1 |
| Greenfield (MONTEZUMA SWITCHING STATION - ) | Greenfield | IA | Jasper County | 345 kV | 600 MW | 1.4 yrs | 67.8 |
| UNKNOWN132118 | Substation-Adjacent | IA | Marshall County | 161 kV | 100 MW | 1.4 yrs | 67.8 |
| TRAER | Substation-Adjacent | IA | Tama County | 161 kV | 100 MW | 1.4 yrs | 67.6 |
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 MARSHALLTOWN GENERATING STATION 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.