Datacenter Sites in Plymouth County, Iowa
Plymouth County has 22 scored datacenter candidate sites averaging 65.7/100 DC Readiness, with a catalogued aggregate of 5,400 MW. FEMA rates local natural-hazard risk as "Relatively Moderate". The county has a datacenter tax incentive on record.
22
Candidate sites
65.7/100
Avg DC Readiness
5,400 MW
Catalogued capacity
theoretical aggregate
Relatively Moderate
Hazard rating
Site-selection context for Plymouth County
Yessales_tax_exemption
Datacenter tax incentive
8.05¢/kWh
Commercial electricity
7.31¢/kWh
Industrial electricity
7
Fiber providers
Low
Water stress
$11,556
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 Plymouth County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| SIOUX CITY | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 77.1 |
| PLYMOUTH | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 71.5 |
| UNKNOWN137009 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 70.6 |
| Greenfield (UNKNOWN130487 - TWIN CHURCH) | Greenfield | 230 kV | 300 MW | 1.0 yrs | 70.1 |
| Greenfield (SIOUX CITY - SPLIT ROCK) | Greenfield | 345 kV | 600 MW | 1.0 yrs | 69.2 |
| Greenfield (UNKNOWN130487 - UNKNOWN131330) | Greenfield | 230 kV | 300 MW | 1.0 yrs | 69.2 |
| TAP137004 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 68.9 |
| UNKNOWN137000 | Substation-Adjacent | 161 kV | 100 MW | 3.5 yrs | 68.8 |
| Greenfield (UNKNOWN130487 - UTICA JUNCTION) | Greenfield | 230 kV | 300 MW | 1.0 yrs | 68.5 |
| Greenfield (UNKNOWN130481 - SIOUX CITY) | Greenfield | 230 kV | 300 MW | 3.5 yrs | 67.6 |
| Greenfield (UNKNOWN138106 - RAUN) | Greenfield | 345 kV | 600 MW | 3.5 yrs | 67.0 |
| Greenfield (UNKNOWN130481 - SIOUX CITY) | Greenfield | 230 kV | 300 MW | 3.5 yrs | 66.6 |
| Greenfield (UNKNOWN138106 - RAUN) | Greenfield | 345 kV | 600 MW | 3.5 yrs | 66.4 |
| Greenfield (UNKNOWN130481 - SIOUX CITY) | Greenfield | 230 kV | 300 MW | 3.5 yrs | 65.1 |
| Greenfield (UNKNOWN130481 - SIOUX CITY) | Greenfield | 230 kV | 300 MW | 3.5 yrs | 64.0 |
| Greenfield (UNKNOWN137000 - TAP137004) | Greenfield | 161 kV | 100 MW | 3.5 yrs | 63.9 |
| Greenfield (UNKNOWN130491 - TAP137004) | Greenfield | 161 kV | 100 MW | 3.5 yrs | 61.9 |
| Greenfield (UNKNOWN130487 - UNKNOWN130488) | Greenfield | 161 kV | 100 MW | 3.5 yrs | 61.9 |
| Greenfield (UNKNOWN130487 - UNKNOWN130488) | Greenfield | 161 kV | 100 MW | 3.5 yrs | 61.6 |
| OZ Plymouth | Greenfield | — | — | 1.4 yrs | 61.5 |
| Greenfield (UNKNOWN130487 - UNKNOWN130488) | Greenfield | 161 kV | 100 MW | 3.5 yrs | 60.2 |
| Mine Site | Former Mine | — | — | — | 44.1 |
Plymouth County datacenter FAQ
- How many datacenter sites are in Plymouth County?
- 22 scored datacenter candidate sites, averaging 65.7/100 DC Readiness.
- Does Plymouth 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 Plymouth County?
- FEMA's National Risk Index rates Plymouth County as "Relatively Moderate" (score 30).
- What are industrial electricity rates in Plymouth County?
- Average industrial electricity is 7.31¢/kWh and commercial is 8.05¢/kWh in Plymouth 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 Plymouth 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.