Joliet Correctional Center - West Side
IndustrialWill, Illinois · PJM
At a glance
Joliet Correctional Center - West Side is an industrial datacenter candidate site in Will, Illinois, scoring 52.0/100 DC Readiness — 68th of 82 scored sites in the county. It sits in the PJM grid region and the COMMONWEALTH EDISON CO service territory, where interconnection has averaged 4.8 years from request to operation.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
New-DC state tax exemptions suspended for 2 years (from Jul 2026).
Incentive detail: Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.
Site location
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How does Joliet Correctional Center - West Side compare with other sites in Will?
Joliet Correctional Center - West Side ranks 68th of 82 scored candidate sites in Will. Its 52.0/100 is roughly in line with the county average of 57.0. It is roughly in line with the Illinois average of 54.3 and roughly in line with the national average of 53.2.
Against the Illinois average, its strongest sub-score is natural hazard (65 vs 63) and its weakest is power availability (30 vs 37). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Joliet Correctional Center - West Side to power, fiber and other datacenters?
The nearest located transmission bottleneck is 116 GOOD-900 ELWO 11622 B 345 KV (PJM), 9 miles away. For connectivity, the nearest internet exchange facility is DataBridge Sites Aurora at 17.4 miles. 13 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Datacenter (386), 12.3 miles away.
What are the flood, water and hazard risks at Joliet Correctional Center - West Side?
At the county level, FEMA's National Risk Index rates Will "Relatively High".
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 Will, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| JOLIET | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 67.4 |
| TAP138173 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 65.4 |
| WILTON | Substation-Adjacent | 765 kV | 1,000 MW | 4.8 yrs | 65.4 |
| UNKNOWN124429 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 65.2 |
| EAST FRANKFORT | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 64.7 |
| LOCKPORT | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 64.7 |
| GOODINGS GROVE | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 64.6 |
| TAP138156 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 64.4 |
Joliet Correctional Center - West Side: common questions
What is the DC Readiness score of Joliet Correctional Center - West Side?
Joliet Correctional Center - West Side scores 52.0/100 on the GridCensus DC Readiness scale, rated fair. It ranks 68th of 82 scored sites in Will. The Will average is 57.0 and the Illinois average is 54.3.
Which electric utility serves Joliet Correctional Center - West Side?
COMMONWEALTH EDISON CO (investor owned) holds the retail service territory that contains the site; its holding company is EXELON CORP.
What grid region is Joliet Correctional Center - West Side in?
Joliet Correctional Center - West Side is in the PJM region. Projects interconnecting there have averaged a 4.8-year wait from queue request to operation.
How far is Joliet Correctional Center - West Side from an internet exchange?
The nearest internet exchange facility is DataBridge Sites Aurora, about 17.4 miles away; 13 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Joliet Correctional Center - West Side, Will, IL”, https://gridcensus.com/datacenter-sites/illinois/will/joliet-correctional-center-west-side-24cb249b (data as of October 10, 2026).
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.
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