A $20 billion data center project, covering 795 acres in Joliet, Illinois, has received final approval from the Joliet City Council. The development, known as the "Joliet Technology Center", will include 24 two-story buildings, each spanning 144,500 square feet (13,425 square meters), and is set to bring significant economic and infrastructural changes to the area.
The council’s approval came after a series of delays and an extended public hearing on March 16 that lasted six hours. The decision, originally scheduled for the same meeting, was postponed due to its length. However, on March 19, the council gave the green light for the project to annex land surrounding S. Rowell Road and Bernhard Road, as proposed by the developer PowerHouse Hillwood Holding.
Earlier in March, the Joliet planning and zoning commission had recommended the annexation request for approval.
According to site plans submitted by PowerHouse Hillwood Holding, the data center campus will be constructed in four phases, with each phase including a six-acre substation. Once completed, the campus will offer up to 1.8 gigawatts (GW) of capacity, making it a significant addition to Illinois' growing data center market.
The project is expected to contribute approximately $310 million in property taxes and $40 million in utility taxes over 30 years - all without relying on economic incentives or tax abatements. PowerHouse Hillwood Holding also claims the data center could generate around $2.1 billion in local tax revenue, as stated on its promotional website "Yes to Joliet Jobs."
However, the approval has not been without criticism. Some local residents have expressed concerns about the development's potential impact on utility bills and the character of the surrounding area. Allegations of corruption against city officials have also surfaced within the community. On the other hand, members of the local building union have shown support for the project, citing the construction jobs it will bring.
The Joliet Technology Center is being developed by PowerHouse Data Centers, a division of American Real Estate Partners. Founded in 2022, PowerHouse has a growing presence in the data center industry, with projects underway in states such as Virginia, Texas, North Carolina, and Pennsylvania. The firm's overall development pipeline reportedly totals more than 6GW of capacity.
The project marks a major addition to Joliet, which is located about 40 miles southwest of Chicago. Both Chicago and Aurora are already significant hubs in Illinois' data center market.
Despite facing delays, the Joliet Technology Center is poised to become a major economic driver for the region. With its phased construction plan and projected tax revenue, the development is expected to have long-term implications for Joliet, balancing economic incentives with community concerns as it moves forward.
