Datacenter Sites in St. Clair County, Illinois
St. Clair County has 107 scored datacenter candidate sites averaging 49.9/100 DC Readiness, with a catalogued aggregate of 7,413 MW. FEMA rates local natural-hazard risk as "Relatively High". The county has a datacenter tax incentive on record.
107
Candidate sites
49.9/100
Avg DC Readiness
7,413 MW
Catalogued capacity
theoretical aggregate
Relatively High
Hazard rating
Site-selection context for St. Clair County
Yessales_tax_exemption
Datacenter tax incentive
9.18¢/kWh
Commercial electricity
3.59¢/kWh
Industrial electricity
9
Fiber providers
Low
Water stress
$9,310
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 St. Clair County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| TURKEY HILL | Substation-Adjacent | 345 kV | 600 MW | 4.6 yrs | 71.9 |
| PORTER RD | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 68.3 |
| TAP156135 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 68.1 |
| Greenfield (PRAIRIE STATE STATION - JARVIS) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 66.1 |
| Belleville Landfill Project | Brownfield | — | 13 MW | — | 65.9 |
| UNKNOWN157809 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 65.8 |
| TAP169374 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 65.8 |
| E BELLEVILLE | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 65.1 |
| OZ St. Clair | Greenfield | — | — | 4.6 yrs | 65.0 |
| Greenfield (CAHOKIA - TURKEY HILL) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 64.9 |
| Greenfield (CAHOKIA - BALDWIN STATION) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 64.9 |
| UNKNOWN122425 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 64.7 |
| Greenfield (PRAIRIE STATE STATION - JARVIS) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 64.3 |
| Greenfield (TAP139468 - CAHOKIA) | Greenfield | 230 kV | 300 MW | 4.6 yrs | 64.2 |
| S BELLEVILLE | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 64.1 |
| BALDWIN STATION | Substation-Adjacent | 345 kV | 600 MW | 4.6 yrs | 64.1 |
| TAP156122 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 63.1 |
| TAP139489 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 62.7 |
| Greenfield (CAHOKIA - BALDWIN STATION) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 62.0 |
| Greenfield (TAP139468 - CAHOKIA) | Greenfield | 230 kV | 300 MW | 4.6 yrs | 62.0 |
| UNKNOWN122407 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 61.5 |
| Greenfield (TAP139468 - CAHOKIA) | Greenfield | 230 kV | 300 MW | 4.6 yrs | 60.1 |
| TAP139475 | Substation-Adjacent | 138 kV | 100 MW | 4.6 yrs | 58.8 |
| Greenfield (TURKEY HILL - BALDWIN STATION) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 57.3 |
| Greenfield (PRAIRIE STATE STATION - JARVIS) | Greenfield | 345 kV | 600 MW | 4.6 yrs | 57.2 |
St. Clair County datacenter FAQ
- How many datacenter sites are in St. Clair County?
- 107 scored datacenter candidate sites, averaging 49.9/100 DC Readiness.
- Does St. Clair 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 St. Clair County?
- FEMA's National Risk Index rates St. Clair County as "Relatively High" (score 35).
- What are industrial electricity rates in St. Clair County?
- Average industrial electricity is 3.59¢/kWh and commercial is 9.18¢/kWh in St. Clair County.
Dataset updated . Screening estimates derived from public data sources.
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