Former Mine site at 45.483, -98.454
Former MineBrown County, South Dakota · SPP
At a glance
Former Mine site at 45.483, -98.454 is a former mine datacenter candidate site in Brown County, South Dakota, scoring 52.9/100 DC Readiness — 35th of 37 scored sites in the county. 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.
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 Former Mine site at 45.483, -98.454 compare with other sites in Brown County?
Former Mine site at 45.483, -98.454 ranks 35th of 37 scored candidate sites in Brown County. Its 52.9/100 is roughly in line with the county average of 57.4. 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 fiber connectivity (72 vs 68) and its weakest is power availability (30 vs 39). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Former Mine site at 45.483, -98.454 to power, fiber and other datacenters?
The nearest located transmission bottleneck is FORMAN_FORMAN_115kV_TIE_FLO_HANKSON_WAHPETON_230 (MISO), 58 miles away. For connectivity, the nearest internet exchange facility is ELN02 at 37 miles. 9 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Datacenter 1422191468, 37 miles away.
What are the flood, water and hazard risks at Former Mine site at 45.483, -98.454?
At the county level, FEMA's National Risk Index rates Brown 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 Brown County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| GROTON | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 64.8 |
| OZ Brown | Greenfield | — | — | 4.3 yrs | 62.7 |
| TAP135081 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
| UNKNOWN131111 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
| TAP161863 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
| UNKNOWN131114 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
| TAP159578 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
| UNKNOWN159585 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
Former Mine site at 45.483, -98.454: common questions
What is the DC Readiness score of Former Mine site at 45.483, -98.454?
Former Mine site at 45.483, -98.454 scores 52.9/100 on the GridCensus DC Readiness scale, rated fair. It ranks 35th of 37 scored sites in Brown County. The Brown County average is 57.4 and the South Dakota average is 54.7.
Which electric utility serves Former Mine site at 45.483, -98.454?
NORTHWESTERN ENERGY - (SD) (investor owned) holds the retail service territory that contains the site; its holding company is NORTHWESTERN ENERGY.
What grid region is Former Mine site at 45.483, -98.454 in?
Former Mine site at 45.483, -98.454 is in the SPP region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Former Mine site at 45.483, -98.454 from an internet exchange?
The nearest internet exchange facility is ELN02, about 37 miles away; 9 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, “Former Mine site at 45.483, -98.454, Brown County, SD”, https://gridcensus.com/datacenter-sites/south-dakota/brown-county/mine-site-bf4aef3f (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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