SIOUX CITY
Substation-AdjacentPlymouth County, Iowa · SPP
SIOUX CITY is a substation-adjacent datacenter candidate site in Plymouth County, Iowa, interconnecting through SPP. It screens at 77.1/100 DC Readiness with a catalogued 600 MW of candidate capacity and a 3.5 yrs average interconnection-queue wait.
Power & interconnection
Speed to power
Connectivity
Site characteristics
Risk & environment
Location context
Incentive detail: Sales tax exemption on DC equipment for $1M+ investments; property tax phase-in for new construction.
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Plymouth County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| PLYMOUTH | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 71.5 |
| UNKNOWN137009 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 70.6 |
| Greenfield (UNKNOWN130487 - TWIN CHURCH) | Greenfield | 230 kV | 300 MW | 1.0 yrs | 70.1 |
| Greenfield (UNKNOWN130487 - UNKNOWN131330) | Greenfield | 230 kV | 300 MW | 1.0 yrs | 69.2 |
| Greenfield (SIOUX CITY - SPLIT ROCK) | Greenfield | 345 kV | 600 MW | 1.0 yrs | 69.2 |
| TAP137004 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 68.9 |
| UNKNOWN137000 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 68.8 |
| Greenfield (UNKNOWN130487 - UTICA JUNCTION) | Greenfield | 230 kV | 300 MW | 1.0 yrs | 68.5 |
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for SIOUX CITY, Plymouth County. 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.