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 $12B. 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

In June 2026, Monarch Rock Air LLC signed a state Data Center Investment Program MOU for a 1,400 MW phased data center campus with on-site generation. The company is tied to California-based Monarch Energy, and the site covers about 1,300 acres along Friday Road on Rockford's south edge, reported at about $12B. There's no city approval yet, and the end-user tenant hasn't been identified.

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Frequently asked questions

What is Monarch Rock Air Data Center Campus (Rockford)?
Monarch Rock Air Data Center Campus (Rockford) is an AI data center project in Rockford, Illinois tracked by Data Center Index. Its status is announced.
Where is Monarch Rock Air Data Center Campus (Rockford)?
Monarch Rock Air Data Center Campus (Rockford) is in Rockford, Illinois. Every tracked Illinois campus, with counts and capacity, is at https://datacenterindex.ai/markets/illinois.
How big is Monarch Rock Air Data Center Campus (Rockford)?
Data Center Index tracks Monarch Rock Air Data Center Campus (Rockford) at 1.4 GW, on an estimated $12B build. The developer or the press states that capacity, in a source dated July 1, 2026.
Who is building Monarch Rock Air Data Center Campus (Rockford)?
Monarch Energy is developing Monarch Rock Air Data Center Campus (Rockford).
When will Monarch Rock Air Data Center Campus (Rockford) come online?
The next building at Monarch Rock Air Data Center Campus (Rockford) is expected online 2028. That date is the first building going live, not the full build-out.

Sources

  1. Rockford data center developer has tax incentive deal in place with the state, records request shows (rockrivercurrent.com · press · 2026-06-26)
  2. Rockford News First (WIFR) (rockfordnewsfirst.com · press · 2026-07-01)
  3. Rockford Register Star (via Yahoo) (yahoo.com · press · 2026-03-23)
  4. Rock River Current (rockrivercurrent.com · press · 2026-03-01)
  5. City Council approves 6-month data center moratorium, but it doesn't apply to key piece of land (rockrivercurrent.com · press · 2026-08-03)