Researched November 9, 2026

Data centers in Illinois

Spezia tracks 17 data center projects in Illinois: 4 under construction, 2 approved, 7 announced, 1 operating, 3 with no stated status. The 5 active projects that state a size add up to 3.3 GW.

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By status

Under construction4
Approved2
Announced7
Operational1
Unknown3

Public records in Illinois

2 projects with FAA crane filings
4 projects with EPA construction stormwater coverage
4 projects with an EPA air permit

Most projects: Yorkville (3), Aurora (2), Chicago (2), Elk Grove Village (2), Coal City (1), Grayslake (1), Hoffman Estates (1), Jerseyville (1).

Every tracked project in Illinois

Being built first, then by stated size. Open a project for its sources, its public records and what is known about who is on the job.

Inside Spezia

Who is building and supplying the Illinois projects

Named builders and suppliersThe general contractor, trades and equipment suppliers named on each Illinois project, and which roles are still open.Ultra
Buying stage by tradeWhat each trade is likely buying on each job now.Ultra
ContactsSenior people at the companies on each job, where public pages name them.Ultra
Who pays whomEquity, loans, leases, power deals and equipment orders, each with its source.Ultra
AlertsAn email the day a Illinois project you watch moves, plus a weekly roundup.Ultra

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Questions about data centers in Illinois

How many data center projects are in Illinois?

Spezia tracks 17 data center projects in Illinois: 4 under construction, 2 approved, 7 announced, 1 operating, 3 with no stated status. Projects found in public sources only; a campus counts once.

Where are data centers being built in Illinois?

The most projects are in Yorkville (3), Aurora (2), Chicago (2), Elk Grove Village (2).

What is the largest data center project in Illinois?

By the size its sources state, Joliet Technology Center in Joliet, at 1.8 GW, approved.

How many data centers are under construction in Illinois?

4 projects are under construction and 2 more are approved. 5 projects here have an FAA crane filing or an EPA permit on record.