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Gridcensus

Former Rock Supply

Industrial

Winneshiek County, Iowa · MISO

DC Readiness
51.0
Fair / 100

Former Rock Supply is an industrial datacenter candidate site in Winneshiek County, Iowa, interconnecting through MISO. It screens at 51.0/100 DC Readiness and a 2.8 yrs average interconnection-queue wait.

Power & interconnection

Speed to power

ISO / RTO regionMISO
Queue depth23
Avg queue wait2.8 yrs

Connectivity

Nearest IXPHeartland Technology Data Center
IXP distance58.9 mi
Fiber providers8
Fiber coverage48.4%

Site characteristics

Site typeIndustrial
Land contactWinneshiek County County Assessor

Risk & environment

Water stress (WRI)Low
Wetlands (NWI)
Critical habitat
Superfund nearby
Hazard sub-score70/100

Location context

Nearest datacenterHeartland Technology Data Center
DC distance58.9 mi
County hazard (FEMA NRI)Relatively Moderate (30)
DC tax incentiveYes (sales_tax_exemption)
Commercial electricity13.19¢/kWh
Industrial electricity8.16¢/kWh
Cooling degree days900
Heating degree days6,500
Land price / acre$8,233

Incentive detail: Sales tax exemption on DC equipment for $1M+ investments; property tax phase-in for new construction.

Site location

◆ Loading map…
≥ 7560–7540–60≤ 40
This site + 8 nearby

Full DC Readiness breakdown

All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.

Power availability20%
30
Speed to power15%
46
Fiber connectivity12%
58
Energy cost10%
50
Water risk8%
88
Natural hazard8%
70
Buildability7%
50
Labor market4%
50
DC cluster4%
40
Land / acreage3%
39
Construction cost3%
50
Gas pipeline2%
10
Tax incentive2%
100
Climate / cooling2%
80

Nearby comparable sites

Other scored datacenter candidate sites in Winneshiek County, ranked by DC Readiness.

Sites near Former Rock Supply
SiteTypeVoltageCapacityQueue waitScore
Mine SiteFormer Mine2.8 yrs51.6
Mine SiteFormer Mine2.8 yrs51.6
UNKNOWN133886Substation-Adjacent69 kV50 MW2.8 yrs51.5
Mine SiteFormer Mine2.8 yrs51.2
Mine SiteFormer Mine2.8 yrs51.1
Former Wapsie ProduceIndustrial2.8 yrs51.0
Former CreameryIndustrial2.8 yrs51.0
Mine SiteFormer Mine2.8 yrs51.0

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 Former Rock Supply, Winneshiek 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.