Malachi.Energy

CyrusOne Illinois

Announced

CyrusOne · Sangamon County, IL

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

Summary

CyrusOne Illinois in Sangamon County, IL is planned at 600 MW and about $500 million, and is announced as of September 2026. It ranks 44th of 54 tracked US mega projects by planned capacity, 0.5% of the 109.2 GW national total. The capacity figure is utility, iso, or government filing; the investment figure is press reported. Confidence is low: the project is proposed without permits, or the capacity is an estimate. Malachi.Energy tracks 2 mega projects in Illinois in total.

Key figures

Planned capacity

600 MW

Utility, ISO, or government filing

Announced investment

$500 million

Press reported

Status

Announced

As of September 2026

Target year

Not stated

No public date

Where the figures come from

Capacity basis
Utility, ISO, or government filing
Investment basis
Press reported
Confidence
Low: the project is proposed without permits, or the capacity is an estimate.
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
NPR Illinois, April 2026
Last verified
, dataset version 2026-09-14. Re-checked at every data refresh.

Basis and confidence definitions are in the directory methodology.

What is known

CyrusOne's planned 600 MW campus near Springfield. Sangamon County approved zoning 17-10 in April 2026; site plan and permits still pending.

Location

Site
Sangamon County, IL
Coordinates
39.78, -89.65
State directory
Data centers in Illinois (54 verified facilities)

Other tracked projects in Illinois

Cite this record

Rein, Malachi (2026). CyrusOne Illinois (Sangamon County, IL). In US Data Center Directory, dataset version 2026-09-14. Malachi.Energy. https://malachi.energy/data-centers/projects/cyrusone-illinois

@misc{malachienergy_cyrusone_illinois_2026,
  author = {Rein, Malachi},
  title = {CyrusOne Illinois (Sangamon County, IL)},
  howpublished = {US Data Center Directory, Malachi.Energy},
  year = {2026},
  note = {Dataset version 2026-09-14. Capacity basis: Utility, ISO, or government filing. Investment basis: Press reported.},
  url = {https://malachi.energy/data-centers/projects/cyrusone-illinois}
}

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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.