Monarch Rock Air Data Center Campus (Rockford)

1.4 GW AI data center in Rockford, IL, United States — announced.

Monarch Rock Air Data Center Campus (Rockford) is a 1.4 GW AI data center project located in Rockford, IL, United States, currently announced. It is being built by Monarch Energy. The estimated build cost is $12.0B. This project is one of thousands of data-center facilities tracked by Data Center Index across IL, United States — covering operational, under-construction, announced, and permitted sites.

Project description

Monarch Rock Air LLC (tied to California-based Monarch Energy) signed a state Data Center Investment Program MOU in June 2026 for a 1,400 MW phased data center campus with on-site generation on ~1,300 acres along Friday Road on Rockford's south edge, reported at ~$12B; no city approval yet and the end-user tenant is unidentified.

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