The Joliet Technology Center Lawsuit: Residents Challenge a $20 Billion, 1.8 Gigawatt Rezoning

The Joliet Technology Center was brought to the city by Powerhouse Hillwood Holding, HW Technology Park Development, and American Real Estate Partners. The plan rezones 795 acres of farmland at the edge of Joliet from agricultural to light industrial and annexes it into the city, clearing the way for 24 buildings totaling 6,936,000 square feet and a power demand of 1.8 gigawatts, more than many utilities serve in an entire metro area.

The approval moved quickly. The city's Plan Commission heard the project on March 5, 2026. The City Council took it up on March 16 and again on March 19, when it approved the annexation agreement by a vote of 8 to 1. The public notice for the process had gone out on February 18. According to the plaintiffs, that notice described the land's industrial classification and the project's name but never said the words data center, and residents who showed up on March 16 were not allowed to cross-examine the witnesses who testified for the project.

The suit rests on four theories. The first is constitutional: under Illinois law, a rezoning must bear a substantial relation to the public health, safety, or welfare, and the plaintiffs argue that converting 795 acres of farmland to serve a single private industrial campus, with the impacts on power, water, and traffic that a 1.8 gigawatt facility brings, fails that test. The second is the Illinois Open Meetings Act. The third is notice: the February 18 notice, the plaintiffs say, did not describe what was actually being approved. The fourth is due process, specifically the denial of cross-examination at the March 16 hearing.

The relief sought is to void the March 19 council vote and the rezoning approval, which would send the project back to the beginning of the public process with everyone now knowing exactly what it is.

The defense, laid out in filings before the September 8 hearing, is a lesson in how municipalities defend fast approvals. On notice, the city argues that the February 18 publication adequately described the nature and scale of the project through its industrial classification and its name, and that state law does not require a notice to specify a project's end use or details. On cross-examination, the developers argue that the right belongs only to property owners within 600 feet of the site, that none of them requested it, and that the meeting video establishes no one sought or attempted to cross-examine any witness. On the Open Meetings Act, the city says the statute does not authorize voiding action taken at an open public meeting, and that nullifying a vote is, in its attorney's words, too extreme a remedy for an alleged notice or agenda defect.

The defendants also attack the plaintiffs' organization. Joliet Residents For Responsible Growth was incorporated on June 4, 2026, after the May 18 filing, and the defense argues it lacks standing to sue on behalf of members. The three individual plaintiffs, who live in unincorporated Elwood near the site, do not face that problem.

Joliet is the case to read if a large project near you moved from first hearing to final vote in a matter of weeks. The practical lessons:

• Read the notice for what it does not say. If the published notice names a zoning category and a project title but never the use, that gap is the center of the Joliet and Grayslake cases.
• Ask for cross-examination on the record. The developers' defense here is that no one asked. Make the request in writing at the hearing, whether or not you live within 600 feet.
• Organize before you incorporate, and file as individuals too. The standing attack on the Joliet nonprofit shows why individual neighbors should always be named plaintiffs.
• Move within days. The Joliet plaintiffs filed two months after the vote; challenges to land use decisions can run on 30 day clocks. Our deadlines guide explains the math.

Our guide to fighting a proposed data center covers the substance of these challenges, and the Grayslake lawsuit, filed by the same firm over a 472 acre campus, shows the second front. If a project near you is on this track, our free case review connects you with an independent attorney in our network who handles data center cases in your state, at no cost and with no obligation.