Substation-Adjacent Datacenter Sites in Iowa
Iowa has 282 substation-adjacent datacenter candidate sites. Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
282
Substation-Adjacent sites
76.5/100
Avg score (top 25)
Iowa
State
Substation-Adjacent
Type
Top substation-adjacent sites in Iowa
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| GRIMES | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 79.4 |
| TIFFIN | Substation-Adjacent | Johnson County | 345 kV | 600 MW | 1.4 yrs | 78.6 |
| UNKNOWN131605 | Substation-Adjacent | Scott County | 345 kV | 600 MW | 1.4 yrs | 78.4 |
| UNKNOWN163571 | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 78.1 |
| SYCAMORE | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 78.0 |
| WALTER SCOTT ENERGY CENTER | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 77.9 |
| BONDURANT | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 77.7 |
| SE POLK | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 77.3 |
| SIOUX CITY | Substation-Adjacent | Plymouth County | 345 kV | 600 MW | 3.5 yrs | 77.1 |
| UNKNOWN131416 | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 76.7 |
| HAZLETON | Substation-Adjacent | Black Hawk County | 345 kV | 600 MW | 1.4 yrs | 76.6 |
| UNKNOWN122189 | Substation-Adjacent | Clinton County | 345 kV | 600 MW | 1.4 yrs | 76.6 |
| SUB 91 | Substation-Adjacent | Scott County | 345 kV | 600 MW | 1.4 yrs | 76.4 |
| BLACK HAWK | Substation-Adjacent | Black Hawk County | 345 kV | 600 MW | 1.4 yrs | 76.2 |
| UNKNOWN131604 | Substation-Adjacent | Scott County | 345 kV | 600 MW | 1.4 yrs | 75.8 |
| TAP140530 | Substation-Adjacent | Washington County | 345 kV | 600 MW | 1.4 yrs | 75.7 |
| O'BRIEN | Substation-Adjacent | O'Brien County | 345 kV | 600 MW | 1.4 yrs | 75.6 |
| HILLS | Substation-Adjacent | Johnson County | 345 kV | 600 MW | 1.4 yrs | 75.6 |
| UNKNOWN131373 | Substation-Adjacent | Jackson County | 345 kV | 600 MW | 1.4 yrs | 75.4 |
| DES MOINES | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 75.3 |
| NORWALK | Substation-Adjacent | Warren County | 345 kV | 600 MW | 1.4 yrs | 75.2 |
| UNKNOWN130479 | Substation-Adjacent | Lyon County | 230 kV | 300 MW | 1.0 yrs | 75.0 |
| LEHIGH | Substation-Adjacent | Webster County | 345 kV | 600 MW | 1.4 yrs | 75.0 |
| BOONEVILLE | Substation-Adjacent | Madison County | 345 kV | 600 MW | 1.4 yrs | 74.8 |
| ARNOLD | Substation-Adjacent | Linn County | 345 kV | 600 MW | 1.4 yrs | 74.8 |
- How many substation-adjacent datacenter sites are in Iowa?
- GridCensus catalogs 282 substation-adjacent datacenter candidate sites in Iowa.
- What is a substation-adjacent datacenter site?
- Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
Dataset updated . Screening estimates derived from public data sources.
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This page shows a public slice of the GridCensus dataset for Substation-Adjacent sites in 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.