Developers of a 72-megawatt data center campus at the former Alcatel-Lucent site in Naperville are now scaling back their plan following feedback from Naperville city staff and residents.

The initial proposal by Karis Critical Member was for a campus that would be developed in two phases and include two separate 211,000-square-foot data center buildings that would serve as mirror images of each other.

Now, Karis is seeking approval for only phase one of its plan: a singular 36-megawatt data center building on the 40-acre property. Similar to the original plan, the building will contain an office component. There will be 24 backup generators as part of the new proposal, with each generator acoustically treated in a self-contained unit.

The updated plan will be discussed at the Planning

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