FACILITY PROFILE · IL

T5 Chicago IV (CHI IV)

T5 Data Centers · Grayslake · IL

PROJECT FACTS

Facility overview

Under Construction

Operator: T5 Data Centers
Location: Grayslake, Lake, IL
Operating power capacity: 480.0 MW
Planned power capacity: 1,200.0 MW
AI classification: Confirmed
Source confidence: Confirmed
Reported energy source: grid
Reported utility: ComEd
Cooling system: closed_loop
Location accuracy: exact
Original announcement: 2026
Source record updated: 2026-10-15

Operating MW and planned MW are separate disclosures, not automatically additive. Blank values mean no established source figure; they do not mean zero. Geolocation may be approximate or represent multiple sites.

SOURCE DOCUMENTATION

Original source links

T5 plans five gigawatt-scale data center campuses, announces Chicago campus ↗2026-07-07

Despite village approvals, legal action expected against Grayslake data center ↗2026-08-03

Grayslake T5 Data Center Moves Ahead Amid Local Protests ↗2026-07-18

Data Center Could Be Largest Lake County, Ill., Development ↗2026-09-12

Approved T5 Data Center Campus FAQ (updated June 5, 2026) ↗2026-08-03

Data Center Investment Program 2025 Annual Report — T5@Chicago IV, LP, Grayslake (2025 MOU) ↗2026-09-25

Approved Village of Grayslake Data Center Campus FAQs (updated 18 August 2026) ↗2026-09-12

Illinois Data Centers — T5 Chicago IV, Grayslake, 1.2 GW IT (Phase 1: 480 MW) ↗2026-09-25

Correction source ↗2026-10-15

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