Former Mine site at 44.072, -91.940
Former MineWinona County, Minnesota · MISO
At a glance
Former Mine site at 44.072, -91.940 is a former mine datacenter candidate site in Winona County, Minnesota, scoring 51.4/100 DC Readiness — 29th of 38 scored sites in the county. It sits in the MISO grid region and the NORTHERN STATES POWER CO - MINNESOTA 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
Incentives available; large-load tariffs emerging.
Incentive detail: Sales tax exemption on DC equipment and electricity for qualified DCs.
Site location
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How does Former Mine site at 44.072, -91.940 compare with other sites in Winona County?
Former Mine site at 44.072, -91.940 ranks 29th of 38 scored candidate sites in Winona County. Its 51.4/100 is roughly in line with the county average of 53.5. It is roughly in line with the Minnesota average of 55.7 and roughly in line with the national average of 53.2.
Against the Minnesota average, its strongest sub-score is natural hazard (75 vs 74) and its weakest is fiber connectivity (57 vs 70). 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 44.072, -91.940 to power, fiber and other datacenters?
For connectivity, the nearest internet exchange facility is SFN MN-Rochester at 26.2 miles. 4 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is NP Rochester, 26.2 miles away.
What are the flood, water and hazard risks at Former Mine site at 44.072, -91.940?
At the county level, FEMA's National Risk Index rates Winona County "Relatively Moderate".
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 Winona County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| OZ Winona | Greenfield | — | — | 4.3 yrs | 60.3 |
| UNKNOWN131554 | Substation-Adjacent | 161 kV | 100 MW | 4.3 yrs | 57.2 |
| TAP139558 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 56.4 |
| Greenfield (NORTH ROCHESTER - BRIGGS ROAD) | Greenfield | 345 kV | 600 MW | 4.3 yrs | 56.3 |
| UNKNOWN157990 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 56.1 |
| TAP171256 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 56.0 |
| UNKNOWN131058 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 55.7 |
| UNKNOWN156610 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 55.6 |
Former Mine site at 44.072, -91.940: common questions
What is the DC Readiness score of Former Mine site at 44.072, -91.940?
Former Mine site at 44.072, -91.940 scores 51.4/100 on the GridCensus DC Readiness scale, rated fair. It ranks 29th of 38 scored sites in Winona County. The Winona County average is 53.5 and the Minnesota average is 55.7.
Which electric utility serves Former Mine site at 44.072, -91.940?
NORTHERN STATES POWER CO - MINNESOTA (investor owned) holds the retail service territory that contains the site; its holding company is XCEL ENERGY INC.
What grid region is Former Mine site at 44.072, -91.940 in?
Former Mine site at 44.072, -91.940 is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Former Mine site at 44.072, -91.940 from an internet exchange?
The nearest internet exchange facility is SFN MN-Rochester, about 26.2 miles away; 4 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 44.072, -91.940, Winona County, MN”, https://gridcensus.com/datacenter-sites/minnesota/winona-county/mine-site-c8d29ba2 (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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