This is a source-attributed discovery row. It can help you find a place and its citations; it is not a DataCenterData finding that the facility is distinct or currently operating.
Facility snapshot
- Operator as published
- T5 Data Centers
- Address and locality
- Grayslake · Lake County · Illinois
- Lifecycle status
- reported under construction
- Facility type
- data center
- Reported capacity
- Planned: 1,200 MW (source-reported; boundary not independently verified)
- Source freshness
- 12 September 2026
- Location precision
- exact
- Source confidence
- confirmed
- Stable directory ID
dcd-dir-001415
What the source record says
CHI IV in Grayslake, Lake County (~40 mi north of Chicago): up to 1.2 GW IT capacity with 1.6 GW secured ComEd power; envisions 20 × 60 MW buildings, Phase 1 (3 × 60 MW) targeted Q4 2027. Recorded as proposed (announced; no groundbreaking confirmed). Distinct from T5's Palmetto, GA campus. Coordinates are the Grayslake area centroid.
Any MW value is reproduced as source-reported context. Its measurement boundary is not established consistently enough for comparison. Unknown is not zero.
Status history supplied by the source
- 2026 · reported proposed
T5 announced its CHI IV campus in Grayslake (Lake County): up to 1.2 GW IT / 1.6 GW secured utility power; Phase 1 (3 × 60 MW) targeted Q4 2027
- 2026-06-08 · reported under construction
Grayslake Village Board has granted all required land use and zoning approvals for the T5 Chicago IV campus (Mayor: "T5 has received all the land use and zoning approvals required by the village"), and construction crews have begun earthmoving/site grading on the first phase along Peterson Road — a genuine status change from proposed to under_construction, despite pending resident litigation.
Sources and attribution
- T5 plans five gigawatt-scale data center campuses, announces Chicago campus · Data Center Dynamics
- Despite village approvals, legal action expected against Grayslake data center · Daily Herald
- Grayslake T5 Data Center Moves Ahead Amid Local Protests · Hoodline
- Data Center Could Be Largest Lake County, Ill., Development · Government Technology
- Approved T5 Data Center Campus FAQ (updated June 5, 2026) · Village of Grayslake
- Data Center Investment Program 2025 Annual Report — T5@Chicago IV, LP, Grayslake (2025 MOU) · Illinois Department of Commerce and Economic Opportunity
- Approved Village of Grayslake Data Center Campus FAQs (updated 18 August 2026) · Village of Grayslake, Illinois
Adapted from Compute Atlas by Edward Kubiak, edition 1.33.0, under CC BY 4.0. Upstream ID t5-chicago-iv-grayslake-il. Filtered to data-center records in the 50 U.S. states; selected fields normalized for search and display; DataCenterData directory IDs added.
This does not mean the row is wrong. It means DataCenterData has not promoted it through the independent evidence workflow.