Datacenter Sites in Mills County, Iowa
Mills County has 13 scored datacenter candidate sites averaging 68.2/100 DC Readiness, with a catalogued aggregate of 4,000 MW. FEMA rates local natural-hazard risk as "Relatively Moderate". The county has a datacenter tax incentive on record.
13
Candidate sites
68.2/100
Avg DC Readiness
4,000 MW
Catalogued capacity
theoretical aggregate
Relatively Moderate
Hazard rating
Site-selection context for Mills County
Yessales_tax_exemption
Datacenter tax incentive
8.43¢/kWh
Commercial electricity
6.05¢/kWh
Industrial electricity
6
Fiber providers
Low
Water stress
$8,944
Land price / acre
900
Cooling degree days
6,500
Heating degree days
48°F
Mean annual temp
Incentive detail: Sales tax exemption on DC equipment for $1M+ investments; property tax phase-in for new construction.
By site type
Top datacenter sites in Mills County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| GRIMES | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 79.4 |
| UNKNOWN163571 | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 78.1 |
| WALTER SCOTT ENERGY CENTER | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 77.9 |
| UNKNOWN131416 | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 76.7 |
| UNKNOWN131499 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 73.2 |
| Greenfield (UNKNOWN131416 - ROLLING HILLS) | Greenfield | 345 kV | 600 MW | 3.5 yrs | 69.7 |
| UNKNOWN131421 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 69.0 |
| Greenfield (UNKNOWN131416 - ROLLING HILLS) | Greenfield | 345 kV | 600 MW | 3.5 yrs | 67.5 |
| EC Coal Mills County | Greenfield | — | — | 1.4 yrs | 65.6 |
| EC Coal Mills County | Greenfield | — | — | 1.4 yrs | 65.5 |
| Greenfield (UNKNOWN131421 - UNKNOWN131499) | Greenfield | 161 kV | 100 MW | 3.5 yrs | 63.6 |
| Greenfield (UNKNOWN131420 - UNKNOWN131421) | Greenfield | 161 kV | 100 MW | 3.5 yrs | 60.9 |
| Former Atlas "f" Missile Site #3 | Industrial | — | — | — | 40.0 |
Mills County datacenter FAQ
- How many datacenter sites are in Mills County?
- 13 scored datacenter candidate sites, averaging 68.2/100 DC Readiness.
- Does Mills County offer datacenter tax incentives?
- Sales tax exemption on DC equipment for $1M+ investments; property tax phase-in for new construction.
- What is the natural-hazard risk in Mills County?
- FEMA's National Risk Index rates Mills County as "Relatively Moderate" (score 30).
- What are industrial electricity rates in Mills County?
- Average industrial electricity is 6.05¢/kWh and commercial is 8.43¢/kWh in Mills County.
Dataset updated . Screening estimates derived from public data sources.
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This page shows a public slice of the GridCensus dataset for Mills County, Iowa. 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.