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Karis Critical Naperville Data Center
Karis Critical. Denied
Karis Critical proposed a roughly 145,000 square foot data center on the vacant former Lucent campus along the Interstate 88 corridor in Naperville. After months of resident opposition, including objections to 24 planned diesel backup generators, the Naperville City Council voted 6 to 1 on January 20, 2026 to deny the proposal.
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- Status
- Denied
- Operator
- Not disclosed
- Applicant on record
- Karis Critical
- Location
- 1960 Lucent Lane, Naperville, IL, DuPage County, IL
- Size
- MW not reported, 145,000 sq ft
- Cooling
- Not reported
- Utility
- ComEd
- Last updated
- August 29, 2026
What happens next
This proposal will not move forward as filed, but the land it was proposed on can be proposed again under a new project. See other stopped projects.
Sources
- Naperville, Illinois city council denies plan for Karis Critical data center on vacant Lucent campus off Warrenville Road, ABC7 Chicago
- Naperville City Council votes down proposed data center, NCTV17
What it would mean nearby
This case does not change what a household pays today, but it is the main tool Illinois regulators are using to try to stop the cost of new grid equipment for data centers from landing on residential bills. ComEd annual reconciliation rate case (docket 25-0383) adds about $3.10 a month to a typical bill from January 2026. PJM capacity auction price spike hits ComEd supply charges adds about $10.50 a month to a typical bill from June 2025.
For how far this is from your own address, check it here. For what this site could mean for one street address, see the address report, $19.
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Common questions
Where is the Karis Critical Naperville data center?
It is in Naperville, DuPage County, IL.
Has the Karis Critical Naperville data center been approved?
No. A local government denied it.
How big is the Karis Critical Naperville data center?
Reported size: 145,000 square feet.
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