Illinois
Data centers in Winnebago County
We track 1 project inside Winnebago County and 1 more within 25 miles of it. For a distance-specific answer, check your own address.
In Winnebago County
Filed
1400 MW
Rockford
Monarch Energy is finalizing a roughly 12 billion dollar, 1,400 megawatt phased data center on about 1,100 acres near Chicago Rockford International Airport, projected to bring 200 high tech jobs and start operating around 2028. A TIF incentive advisory panel recommended approval in March 2026 and the agreement was signed in June 2026, but on July 1, 2026 Governor Pritzker directed the state to stop processing new data center incentive agreements, adding uncertainty to the project's state tax breaks.
Within 25 miles of Winnebago County
25 mi SEApprovedDeKalb County, IL
Power bills in Winnebago County
Most of the county is served by ComEd.
This case does not change what a household pays today, but it is the main tool Illinois regulators are using to try to stop the cost of new grid equipment for data centers from landing on residential bills. ComEd annual reconciliation rate case (docket 25-0383) adds about $3.10 a month to a typical bill from January 2026. PJM capacity auction price spike hits ComEd supply charges adds about $10.50 a month to a typical bill from June 2025.
Under an Illinois law that lets ComEd true up its grid plan spending every year, the utility asked to recover 268.5 million dollars in a reconciliation case. The Illinois Commerce Commission approved 243.1 million dollars on December 18, 2025, cutting about 25.4 million dollars including costs tied to a mismanaged customer billing system rollout. Citizens Utility Board estimated the approved amount adds about 3.10 dollars a month to a typical residential bill starting in 2026.
Alerts for Winnebago County
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