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Joliet, IL · Will County County · 41.432°N 88.128°W

Joliet Technology Center

HW Technology Park (Hillwood Investment Properties / PowerHouse Data Centers)

PermittedLikely AI-specificConfirmed

This facility is permitted and has not been reported as operational. Details are based on public filings and announcements as of .

Key facts

Location
Joliet, IL, Will County County
Capacity
1,800 MW planned
Powered by
—
Announced
2025-10
Last updated

Civic impact

Economics

Investment
$20B
Land
795 acres
Jobs
7,000 construction · 700 permanent

Energy & water

Energy source
Grid · Utility: ComEd

ComEd substation to be built at site, funded by HW Technology Park; developer seeking own electricity supply independently

Community sentiment

Litigation

Hundreds of residents filled council chambers and overflow rooms; concerns over water/electricity consumption, noise pollution, and proximity to residential areas. Post-approval lawsuit filed naming City of Joliet, PowerHouse, and Hillwood as defendants.

City of Joliet approves plans for what could be the largest data center in Illinois

Status history

  1. Proposed

    Hillwood announced 795-acre data center campus planned on south Joliet farmland; Plan Commission recommendation scheduled October 16, 2025

    Data center planned on 795 acres of farmland in south Joliet, Illinois
  2. Permitted

    Joliet City Council voted 8-1 to approve annexation and development plan on March 19, 2026

    City of Joliet approves plans for what could be the largest data center in Illinois

Location

Sources & data provenance

Confirmed: data verified against official filings, permits, or direct operator announcements.

Last updated:

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