HERRIN
Substation-AdjacentWilliamson County, Illinois · PJM
HERRIN is a substation-adjacent datacenter candidate site in Williamson County, Illinois, interconnecting through PJM. It screens at 55.6/100 DC Readiness with a catalogued 100 MW of candidate capacity and a 3.8 yrs average interconnection-queue wait.
Power & interconnection
Connectivity
Site characteristics
Risk & environment
Location context
Incentive detail: Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.
Site location
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Williamson County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| EC FFE Williamson County | Greenfield | — | — | 4.6 yrs | 61.0 |
| EC Coal Williamson County | Greenfield | — | — | 4.6 yrs | 61.0 |
| EC Coal Williamson County | Greenfield | — | — | 4.6 yrs | 60.6 |
| OZ Williamson | Greenfield | — | — | 4.6 yrs | 60.2 |
| EC Near Marion | Greenfield | — | — | 4.6 yrs | 60.2 |
| EC Coal Williamson County | Greenfield | — | — | 4.6 yrs | 60.1 |
| EC Coal Williamson County | Greenfield | — | — | 4.6 yrs | 59.6 |
| EC Near Marion | Greenfield | — | — | 4.6 yrs | 59.4 |
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 HERRIN, Williamson 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.