Datacenter Sites in Johnson County, Illinois
Johnson County has 13 scored datacenter candidate sites averaging 62.3/100 DC Readiness, with a catalogued aggregate of 2,800 MW. FEMA rates local natural-hazard risk as "Relatively High". The county has a datacenter tax incentive on record.
13
Candidate sites
62.3/100
Avg DC Readiness
2,800 MW
Catalogued capacity
theoretical aggregate
Relatively High
Hazard rating
Site-selection context for Johnson County
Yessales_tax_exemption
Datacenter tax incentive
10.38¢/kWh
Commercial electricity
5.29¢/kWh
Industrial electricity
4
Fiber providers
Low
Water stress
$4,327
Land price / acre
1,100
Cooling degree days
5,600
Heating degree days
52°F
Mean annual temp
Incentive detail: Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.
By site type
Top datacenter sites in Johnson County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| JOPPA | Substation-Adjacent | 230 kV | 300 MW | 4.6 yrs | 70.7 |
| Greenfield (SHAWNEE - WEST FRANKFORT EAST) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 67.3 |
| Greenfield (SHAWNEE - WEST FRANKFORT EAST) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 65.9 |
| Greenfield (SHAWNEE - WEST FRANKFORT EAST) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 65.9 |
| Greenfield (JOPPA - WEST FRANKFORT) | Greenfield | 230 kV | 300 MW | 4.6 yrs | 63.1 |
| MARION S | Substation-Adjacent | 161 kV | 100 MW | 4.6 yrs | 62.7 |
| OZ Johnson | Greenfield | — | — | 4.6 yrs | 62.4 |
| EC Coal Johnson County | Greenfield | — | — | 4.6 yrs | 61.2 |
| Greenfield (MARION S - JOPPA STATION) | Greenfield | 161 kV | 100 MW | 4.6 yrs | 59.3 |
| EC FFE Johnson County | Greenfield | — | — | 4.6 yrs | 59.3 |
| Greenfield (UNKNOWN121869 - UNKNOWN121872) | Greenfield | 161 kV | 100 MW | 4.6 yrs | 58.9 |
| Greenfield (UNKNOWN121869 - UNKNOWN121872) | Greenfield | 161 kV | 100 MW | 4.6 yrs | 58.3 |
| EC Coal Johnson County | Greenfield | — | — | 4.6 yrs | 55.3 |
Johnson County datacenter FAQ
- How many datacenter sites are in Johnson County?
- 13 scored datacenter candidate sites, averaging 62.3/100 DC Readiness.
- Does Johnson County offer datacenter tax incentives?
- Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.
- What is the natural-hazard risk in Johnson County?
- FEMA's National Risk Index rates Johnson County as "Relatively High" (score 35).
- What are industrial electricity rates in Johnson County?
- Average industrial electricity is 5.29¢/kWh and commercial is 10.38¢/kWh in Johnson County.
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Johnson County, Illinois. 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.