Malachi.Energy

Joliet Technology Center

Announced

Hillwood / PowerHouse Data Centers · Joliet, IL

Maintained and reviewed by Malachi Rein, LEED AP BD+CDataset version

Summary

Joliet Technology Center by Hillwood / PowerHouse Data Centers in Joliet, IL is planned at 1.8 GW and about $20 billion, and is announced, with a 2028 target as of October 2026. It ranks 17th of 56 tracked US mega projects by planned capacity, 1.7% of the 106.2 GW national total. The capacity figure is utility, iso, or government filing; the investment figure is press reported. Confidence is medium: one figure is reported, estimated, or scoped differently than the campus. Malachi.Energy tracks 2 mega projects in Illinois in total.

Key figures

Planned capacity

1.8 GW

Utility, ISO, or government filing

Announced investment

$20 billion

Press reported

Status

Announced

As of October 2026

Target year

2028

First load or full build per source

Where the figures come from

Capacity basis
Utility, ISO, or government filing
Investment basis
Press reported
Nearest high-voltage transmission
The campus sits 0.3 miles from the nearest 345 kV transmission line, owned by Commonwealth Edison Co, per HIFLD transmission data current to September 2023, computed 2026-10-02. 15 line segments rated 230 kV or higher pass within 5 miles of the campus, the highest at 765 kV. Source: HIFLD
Location basis
Public address, geocoded. The coordinate marks the campus, so distance facts on this page are measured from it. Location source: Shaw Local / Herald-News.
Confidence
Medium: one figure is reported, estimated, or scoped differently than the campus.
Counted in headline totals
Yes. The investment figure is not developer-stated campus cost, so it is listed as announced rather than comparable spend.
Primary source
Shaw Local, March 2026
Last verified
, dataset version 2026-10-03. Re-checked whenever the project list is refreshed.

Basis and confidence definitions are in the directory methodology.

What is known

795-acre campus in Will County approved 8-1 by the Joliet City Council in March 2026; first sub-campus targeted for 2028, full build by 2032.

Location

Site
Joliet, IL
Coordinates
41.46, -88.06
State directory
Data centers in Illinois (54 verified facilities)

Other tracked projects in Illinois

Cite this record

Rein, Malachi (2026). Joliet Technology Center (Joliet, IL). In US Data Center Directory, dataset version 2026-10-03. Malachi.Energy. https://malachi.energy/data-centers/projects/joliet-technology-center-il

@misc{malachienergy_joliet_technology_center_il_2026,
  author = {Rein, Malachi},
  title = {Joliet Technology Center (Joliet, IL)},
  howpublished = {US Data Center Directory, Malachi.Energy},
  year = {2026},
  note = {Dataset version 2026-10-03. Capacity basis: Utility, ISO, or government filing. Investment basis: Press reported.},
  url = {https://malachi.energy/data-centers/projects/joliet-technology-center-il}
}

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Figures are planned capacity and announced investment from public filings and reporting, not delivered power or audited spend. Capacity basis: utility, iso, or government filing. Investment basis: press reported. Dataset version . Maintained by Malachi Rein for Malachi.Energy.