Illinois
Data centers in Illinois
The Census tracks 8 major data center projects in Illinois, with 7.06 GW of planned capacity: 1 proposed, 5 approved, 2 under construction.
How many data centers are in Illinois?
The Census tracks 8 major data center projects in Illinois as of Nov 6, 2026: 1 proposed, 5 approved, 2 under construction. That covers major sourced projects, not every smaller facility. The largest by planned capacity is Joliet Technology Center (1.8 GW). Latest change, at CyrusOne Sangamon County Data Center: County defends its approval in circuit court; Judge Adam Giganti sets an Oct. 9 hearing on the county's motion to dismiss the residents' suit (Sep 11, 2026).
- Projects tracked
- 8
- Planned capacity, active projects
- 7.06GW
- Under construction
- 2
- Permanent jobs promised
- 1,000
Illinois data center projects
| Project | Status | Capacity | Developer | Last update |
|---|---|---|---|---|
| Joliet Technology Center Joliet, Will County |
Approved | 1.8 GW | Hillwood, PowerHouse Data Centers | Sep 8, 2026 |
| Project Cardinal Data Center Campus Yorkville, Kendall County |
Approved | 1.8 GW | Pioneer Development, LLC | Jul 14, 2026 |
| T5 @ Chicago IV Grayslake, Lake County |
Approved | 1.55 GW | T5 Data Centers | Sep 1, 2026 |
| CyrusOne Sangamon County Data Center Waverly, Sangamon County |
Approved | 634 MW | CyrusOne | Sep 11, 2026 |
| Logan Prairie Data Center Latham, Logan County |
Proposed | 500 MW | Hut 8 | Jul 31, 2026 |
| CyrusOne CHI-11 Data Center Campus Yorkville, Kendall County |
Under construction | 480 MW | CyrusOne | Jul 14, 2026 |
| CloudHQ ORD Campus Mount Prospect, Cook County |
Under construction | 300 MW | CloudHQ (affiliate TUR Venture LLC) | Jul 2026 |
| Project Steel Data Center Campus Yorkville, Kendall County |
Approved | — | Prologis | May 2026 |
Recent changes in Illinois
-
CyrusOne Sangamon County Data Center IL
County defends its approval in circuit court; Judge Adam Giganti sets an Oct. 9 hearing on the county's motion to dismiss the residents' suit Illinois Times -
Joliet Technology Center IL
Will County Judge Victoria Breslan hears arguments on the city's and developer's motions to dismiss the residents' lawsuit and says she will rule in October Shaw Local (The Herald-News) -
T5 @ Chicago IV IL
Village issues first building permit, for an 800,000-square-foot facility Lake and McHenry County Scanner -
Joliet Technology Center IL
City and developers' motions to dismiss set for a Sept. 8 hearing before Will County Judge Victoria Breslan Shaw Local (The Herald-News) -
T5 @ Chicago IV IL
Nine Lake County residents and Preservation of Community Well-being Collective LLC file suit challenging the village's approvals Lake and McHenry County Scanner -
Logan Prairie Data Center IL
Logan County officials cancel the Aug. 6 Zoning Board of Appeals meeting Illinois Times -
CyrusOne CHI-11 Data Center Campus IL
City Council approves an update to the plan for the CyrusOne campus off Eldamain and Faxon roads WSPY News -
Project Cardinal Data Center Campus IL
City Council approves an amendment to the project's PUD Shaw Local -
CyrusOne Sangamon County Data Center IL
Waverly residents sue Sangamon County in circuit court to overturn the approval Illinois Times -
CloudHQ ORD Campus IL
Village hires HR Green, Inc. to review CloudHQ permits, with the developer bearing the cost Daily Herald
About this count
This page counts the major projects the Census has researched and sourced: 8 as of Nov 6, 2026. It does not yet include every smaller colocation or enterprise facility, so the total number of buildings in Illinois is higher. We add projects as they are announced or found in public filings.
Counties with tracked projects
Cook County · Kendall County · Lake County · Logan County · Sangamon County · Will County
Community concerns
2 concerns documented in public sources about 1 project here →
Water and power
4 of the 8 tracked projects here have a disclosed water figure (4 in all), with sources and what each figure measures.
Moratoriums
-
Logan Prairie Data Center IL
State's Attorney Bradley Hauge advises County Board members that proper procedures were not followed for the moratorium to be legally binding Illinois Times -
Logan Prairie Data Center IL
Logan County Board votes 6-4 for a 12-month data center moratorium Illinois Times -
Logan Prairie Data Center IL
County Board does not extend the moratorium and sends the issue back to the zoning board pending a data center ordinance FOX Illinois -
Logan Prairie Data Center IL
Logan County Board approves a 60-day data center moratorium Illinois Times
All 4 moratorium actions in Illinois →
Data center rules in Illinois
- Illinois: Illinois Pollution Control Board, 35 Ill. Adm. Code Part 901 (property-line noise standards)in effect
- Yorkville: Yorkville city noise code (Title 4 Ch. 4)in effect
Utilities serving tracked projects in Illinois
ComEd · Ameren Illinois · Rural Electric Convenience Cooperative. Will data centers raise electric bills here? →
Follow Illinois
RSS feed of Illinois changes · Printable fact sheet · Embed this tracker · Projects near a ZIP code · Data center jobs near you
Illinois data centers: common questions
How many data centers are in Illinois?
The Census tracks 8 major data center projects in Illinois as of Nov 6, 2026: 1 proposed, 5 approved, 2 under construction. This counts large projects the Census has researched and sourced, not every smaller colocation or enterprise facility, so the total number of data center buildings in Illinois is higher.
What is the largest data center project in Illinois?
By published planned capacity, the largest tracked project in Illinois is Joliet Technology Center in Joliet, Will County, IL, at 1.8 GW. Its status is approved.
Are data centers being built in Illinois right now?
Yes. 2 tracked projects are under construction in Illinois: CyrusOne CHI-11 Data Center Campus, CloudHQ ORD Campus.
How many jobs will data centers create in Illinois?
3 tracked projects in Illinois have a published permanent-jobs figure, adding up to 1,000 permanent jobs as announced. Announced jobs are promises, not guarantees; construction employment is typically much larger but temporary.
Are there data center moratoriums in Illinois?
The Census moratorium tracker records 4 moratorium actions in 4 jurisdictions in Illinois, most recently in Lake County (Sep 8, 2026). Each one, with its source, is on the Illinois moratorium page.
Answers are generated from the sourced project records above and update when a record changes. Open any project for its sources.
Illinois data center report card
- Tracked projects8
- Published capacity7.06 GW
- Under construction2
- Moratorium actions in the tracker4
- Largest: Joliet Technology Center1.8 GW
A square image of these figures, sized for Instagram, LinkedIn and slides. It is redrawn whenever a record changes, so the link always shows today’s numbers.
Free to use with credit to Data Center Census (CC BY 4.0).
Cite this page
Last updated Nov 6, 2026. Figures may change as records are updated — include the date you retrieved them.
| APA | Data Center Census. (2026). Data centers in Illinois. Retrieved from https://datacentercensus.com/us/illinois |
|---|---|
| MLA | “Data centers in Illinois.” Data Center Census, Nov 6, 2026, https://datacentercensus.com/us/illinois. |
| Link | https://datacentercensus.com/us/illinois |
Republishing a figure or table? Attribute it to Data Center Census with a link to this page. The underlying data is downloadable as JSON and CSV; the press kit has standing figures and contact details.