Microsoft Data Center - Hoffman Estates Operator not disclosed
Compass Datacenters Hoffman Estates Campus
Compass Datacenters. Under construction
Compass Datacenters is redeveloping the former Sears corporate headquarters campus into five hyperscale data center buildings on 197 acres, a project the company says will total about 10 billion dollars over several years. Compass bought the site for 194 million dollars in September 2023 and demolition and site work have been underway since, with the first building expected to be powered by ComEd around mid-2026.
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- Status
- Under construction
- Operator
- Compass Datacenters
- Applicant on record
- Compass Datacenters
- Location
- 5500 Trillium Blvd, Hoffman Estates, IL, Cook County, IL
- Size
- MW not reported, 197 acres
- Cooling
- Not reported
- Utility
- ComEd
- First reported
- 2023-09
- Last updated
- August 29, 2026
What happens next
The site is under construction. The next step is opening.
Sources
- Hoffman Estates ready for a 'modern era' with data center project at former Sears site, Chicago Sun-Times, 2024-06-13
- Compass Kicks Off Development Of Its First Campus in Illinois, Compass Datacenters
What it would mean nearby
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.
For how far this is from your own address, check it here. For what this site could mean for one street address, see the address report, $19.
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Common questions
Where is the Compass Datacenters Hoffman Estates Campus?
It is in Hoffman Estates, Cook County, IL.
Has the Compass Datacenters Hoffman Estates Campus been approved?
Yes, it was approved and is now under construction.
How big is the Compass Datacenters Hoffman Estates Campus?
Reported size: 197 acres.
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