Data center fact sheet
Illinois
As of . Latest dated change shown: Sep 11, 2026. Source: Data Center Census (datacentercensus.com), CC BY 4.0.
- Tracked projects
- 8
- 1 proposed, 5 approved, 2 under construction
- Planned capacity
- 7.06 GW
- 7 projects publish a figure; 1 project publishes none; 1 figure is IT load
- Moratorium actions
- 3
- Upcoming hearings
- 1
Projects
| Project | Status | Planned capacity | Developer |
|---|---|---|---|
| Joliet Technology Center Joliet, Will County | Approved | 1.8 GW | Hillwood and PowerHouse Data Centers |
| Project Cardinal Data Center Campus Yorkville, Kendall County | Approved | 1.8 GW | Pioneer Development, LLC |
| T5 @ Chicago IV Grayslake, Lake County | Approved | 1.55 GW | T5 Data Centers |
| CyrusOne Sangamon County Data Center Waverly, Sangamon County | Approved | 634 MW | CyrusOne |
| Logan Prairie Data Center Latham, Logan County | Proposed | 500 MW | Hut 8 (application filed by Logan Prairie Data Center LLC) |
| CyrusOne CHI-11 Data Center Campus Yorkville, Kendall County | Under construction | 480 MW | CyrusOne (C1 Yorkville, LLC) |
| CloudHQ ORD Campus Mount Prospect, Cook County | Under construction | 300 MW IT | CloudHQ (affiliate TUR Venture LLC) |
| Project Steel Data Center Campus Yorkville, Kendall County | Approved | none published | Prologis |
Pauses and local rules
| Jurisdiction | Action | When | Length |
|---|---|---|---|
| Lake County[1] | Adopted | Sep 8, 2026 | eight months |
| Lawrence County[2] | Adopted | Sep 2026 | two years |
| Logan County[3] | Adopted | May 19, 2026 | — |
- 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)
Upcoming votes and hearings
- Oct 30, 2026 Lake County Circuit Court: Initial status hearing in lawsuit challenging the village's approvals (9 a.m., Courtroom 301) (T5 @ Chicago IV)[4]
Latest changes
- Sep 11, 2026 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 (CyrusOne Sangamon County Data Center)[5]
- Sep 8, 2026 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 (Joliet Technology Center)[6]
- Sep 1, 2026 Village issues first building permit, for an 800,000-square-foot facility (T5 @ Chicago IV)[4]
- Aug 17, 2026 City and developers' motions to dismiss set for a Sept. 8 hearing before Will County Judge Victoria Breslan (Joliet Technology Center)[7]
- Aug 2026 Nine Lake County residents and Preservation of Community Well-being Collective LLC file suit challenging the village's approvals (T5 @ Chicago IV)[4]
- Jul 31, 2026 Logan County officials cancel the Aug. 6 Zoning Board of Appeals meeting (Logan Prairie Data Center)[8]
Notes
Planned capacity adds each record’s first published figure for projects not cancelled or denied; projects that publish none are never estimated. IT load is the power reaching computing equipment, so a total that includes it understates total power. Locations may be approximate where a record gives only a town or county. Counts cover tracked projects, not every data center.
Sources
- Lake County, Illinois, “Lake County Board Approves Moratorium on Data Centers in Unincorporated Lake County”, Sep 8, 2026. https://content.govdelivery.com/accounts/ILLAKE/bulletins/42810a1
- WZDM Wisdom 92.1, “Lawrence Co., IL Board Enacts Two-Year Moratorium on Data Centers”, Sep 19, 2026. https://www.wzdm.com/2026/09/19/lawrence-co-il-board-enacts-two-year-moratorium-on-data-centers/
- Illinois Times, “Data center moratorium declared invalid”, Jul 2, 2026. https://www.illinoistimes.com/news/data-center-moratorium-declared-invalid/
- Lake and McHenry County Scanner, “Grayslake issues first permit for construction to begin on mega data center campus as lawsuit seeks to block development”, Sep 1, 2026. https://www.lakemchenryscanner.com/2026/09/01/grayslake-issues-first-permit-for-construction-to-begin-on-mega-data-center-campus-as-lawsuit-seeks-to-block-development/
- Illinois Times, “County Board defends data center approval in court”, Sep 22, 2026. https://www.illinoistimes.com/news/county-board-defends-data-center-approval-in-court/
- Shaw Local (The Herald-News), “Judge to decide fate of Joliet data center lawsuit in October”, Sep 9, 2026. https://www.shawlocal.com/the-herald-news/2026/09/09/lawsuit-againt-planned-joliet-data-center-stays-alive/
- Shaw Local (The Herald-News), “Lawsuit against Joliet data center heading to court hearing”, Aug 17, 2026. https://www.shawlocal.com/the-herald-news/2026/08/18/lawsuit-against-joliet-data-center-heading-to-court-hearing/
- Illinois Times, “Future uncertain for Logan County data center”, Jul 28, 2026. https://www.illinoistimes.com/news/future-uncertain-for-logan-county-data-center/
Each project record lists all of its sources and excerpts. Cite as: Data Center Census, “Data center fact sheet: Illinois,” October 14, 2026, https://datacentercensus.com/fact-sheets/illinois.