Greenfield (UNKNOWN159534 - TAP159537)
GreenfieldMarshall County, South Dakota · SPP
Greenfield (UNKNOWN159534 - TAP159537) is a greenfield datacenter candidate site in Marshall County, South Dakota, interconnecting through SPP. It screens at 57.8/100 DC Readiness with a catalogued 100 MW of candidate capacity and a 1.0 yrs average interconnection-queue wait.
Power & interconnection
Speed to power
Connectivity
Site characteristics
Risk & environment
Location context
Incentive detail: No state corporate income tax; no personal income tax; no personal property tax.
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 Marshall County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| TAP159537 | Substation-Adjacent | 115 kV | 100 MW | 1.0 yrs | 67.3 |
| UNKNOWN159539 | Substation-Adjacent | 115 kV | 100 MW | 1.0 yrs | 66.4 |
| UNKNOWN159534 | Substation-Adjacent | 115 kV | 100 MW | 1.0 yrs | 65.7 |
| Greenfield (SUMMIT - FORMAN 115 KV) | Greenfield | 115 kV | 100 MW | 1.4 yrs | 62.0 |
| Greenfield (SUMMIT - FORMAN 115 KV) | Greenfield | 115 kV | 100 MW | 1.4 yrs | 61.4 |
| Greenfield (TAP159537 - TAP159554) | Greenfield | 115 kV | 100 MW | 1.0 yrs | 60.7 |
| Former Livestock Sale Barn | Industrial | — | — | — | 42.9 |
| Watertown Precision Bombing Range | Industrial | — | — | — | 41.4 |
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 Greenfield (UNKNOWN159534 - TAP159537), Marshall 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.