Greenfield (FORT THOMPSON - HURON)
GreenfieldBeadle County, South Dakota · SPP
At a glance
Greenfield (FORT THOMPSON - HURON) is a greenfield datacenter candidate site in Beadle County, South Dakota, scoring 54.5/100 DC Readiness — 28th of 51 scored sites in the county. Its nearest substation is FORT THOMPSON. It sits in the SPP grid region and the NORTHWESTERN ENERGY - (SD) service territory, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 300 MW of candidate capacity here.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: No state corporate income tax; no personal income tax; no personal property tax.
Site location
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How does Greenfield (FORT THOMPSON - HURON) compare with other sites in Beadle County?
Greenfield (FORT THOMPSON - HURON) ranks 28th of 51 scored candidate sites in Beadle County. Its 54.5/100 is roughly in line with the county average of 55.1. It is roughly in line with the South Dakota average of 54.7 and roughly in line with the national average of 53.2.
Against the South Dakota average, its strongest sub-score is power availability (50 vs 39) and its weakest is fiber connectivity (59 vs 68). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (FORT THOMPSON - HURON) to power, fiber and other datacenters?
The nearest mapped substation, FORT THOMPSON, is the closest grid connection point on record and operates at 230 kV. For connectivity, the nearest internet exchange facility is TierPoint Sioux Falls - West at 99.8 miles. 6 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is TierPoint Sioux Falls West Data Center, 99.8 miles away.
What are the flood, water and hazard risks at Greenfield (FORT THOMPSON - HURON)?
At the county level, FEMA's National Risk Index rates Beadle County "Relatively Low".
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 Beadle County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| BROADLAND | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 62.3 |
| HURON | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 60.5 |
| EC Near Huron | Greenfield | — | — | 4.3 yrs | 59.6 |
| EC Near Huron | Greenfield | — | — | 4.3 yrs | 58.5 |
| EC Near Huron | Greenfield | — | — | 4.3 yrs | 58.5 |
| EC Near Huron | Greenfield | — | — | 4.3 yrs | 58.4 |
| EC Near Mobile Unit | Greenfield | — | — | 4.3 yrs | 58.2 |
| EC Near Mobile Unit | Greenfield | — | — | 4.3 yrs | 58.1 |
Greenfield (FORT THOMPSON - HURON): common questions
What is the DC Readiness score of Greenfield (FORT THOMPSON - HURON)?
Greenfield (FORT THOMPSON - HURON) scores 54.5/100 on the GridCensus DC Readiness scale, rated fair. It ranks 28th of 51 scored sites in Beadle County. The Beadle County average is 55.1 and the South Dakota average is 54.7.
What is the nearest substation to Greenfield (FORT THOMPSON - HURON)?
The nearest mapped substation is FORT THOMPSON, at 230 kV. GridCensus catalogs 300 MW of candidate capacity for the site.
Which electric utility serves Greenfield (FORT THOMPSON - HURON)?
NORTHWESTERN ENERGY - (SD) (investor owned) holds the retail service territory that contains the site; its holding company is NORTHWESTERN ENERGY.
What grid region is Greenfield (FORT THOMPSON - HURON) in?
Greenfield (FORT THOMPSON - HURON) is in the SPP region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Greenfield (FORT THOMPSON - HURON) from an internet exchange?
The nearest internet exchange facility is TierPoint Sioux Falls - West, about 99.8 miles away; 6 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Greenfield (FORT THOMPSON - HURON), Beadle County, SD”, https://gridcensus.com/datacenter-sites/south-dakota/beadle-county/greenfield-fort-thompson-huron-aa6c086f (data as of October 10, 2026).
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.
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