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.
Reported geography
Source-reported location for T5 Chicago IV (CHI IV).
Approximate source coordinates; this is not a parcel claim. Nearby source points are combined into one accessible target that opens this exact map scope. View these exact rows on the interactive map →
Source row snapshot
- Operator as published
- T5 Data Centers
- Address and locality
- Grayslake · Lake County · Illinois
- Official metro area
- Chicago-Naperville-Elgin, IL-IN
- Source-reported status
- under construction
- Provider facility type
- data center
- Reported capacity
- Not established; source review excludes the published figure
- Source freshness
- 15 October 2026
- Location precision
- approximate (provider label: exact; the provider's own note describes an approximate location)
- Compute Atlas confidence label
- confirmed (provider's classification; not a DataCenterData check)
- Stable directory ID
dcd-dir-001415
Row remains proposed; notes describe planned phases, while the 480-MW operational value is not internally established as operating IT load. The upstream row remains attributed below, but this value is not repeated as site capacity.
Reported details
Source-reported by Compute Atlas; not independently verified by DataCenterData. Provider wording is kept; long provider notes are shortened and marked …; unknown is not zero; none of these values is totaled, ranked or compared.
- Electric utility
- ComEd
- Power source
- Grid
- Cooling
- Closed-loop
- Reported water use
- 0.05 million gallons per day (source-reported)
- Land area
- 400 acres (source-reported; parcel boundary not established)
- Announced jobs
- 20 permanent
- Community response
- Provider label: contested
- AI-use label (provider)
- confirmed
- Announced
- 2026
Incentives reported by the source
Whether each incentive was approved, awarded or received is not established.
- Illinois Data Center Investment Program · Illinois · 2025 · $15.625 million (as stated) Open cited source →
Provider notes
Energy. 1.6 GW of secured ComEd utility power via an on-site substation.
Water. Village FAQ: closed-loop water cooling, with campus-wide average daily use of about 50,000 gallons for ordinary domestic purposes (roughly 2,500-3,500 gallons per building per day). Supply is Lake Michigan water via the Central Lake County Joint Action Water Agency, so no private wells are affected, and there is no groundwater discharge.
Community. Village land-use approvals granted; legal action expected; ongoing water and energy concerns.
These reviews flag conflicting scope, inconsistent source text or support that has not been established. A withheld value may appear in the explanation, but is not displayed as an established field. The upstream row remains attributed under Sources.
- Announced investment: Previously held pending provider-field review. The concern has not been resolved by an independent source review for this captured edition; the field remains withheld.
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 · source-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 · source-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
These sources are listed for the whole row. Unless a figure links to its own source, the provider does not mark which one gave it, so a figure may not appear in every source.
- 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
- Illinois Data Centers — T5 Chicago IV, Grayslake, 1.2 GW IT (Phase 1: 480 MW) · Coalition for Responsible Data Centers
- Correction source
Adapted from Compute Atlas by Edward Kubiak, edition 1.34.1, 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. Some locations in this layer are reported by the provider as derived from OpenStreetMap (© OpenStreetMap contributors, ODbL, https://www.openstreetmap.org/copyright) and Epoch AI (CC BY 4.0).
Compute Atlas 1.34.1 with retained prior rows and publication holds. This is a DataCenterData composite, not an unmodified publisher edition. This row uses the captured source from 1.34.1, source as of 2026-10-14T20:40:52.293Z.
State or local registry record
What a state or local government record says naming this company in this city (no street is given in the record). The record is cited, not republished. It does not establish that a data center is operating, its capacity, or its owner or operator unless the record says that role. It is not added to the counts on this page.
Matched by name and city only. The government record names T5@Chicago IV, LP in Grayslake and gives no street. It is shown here because this is the only published record with that name in that city; it may concern another site of the same company there.
T5@Chicago IV, LP
- Publishing agency
- Illinois Department of Commerce and Economic Opportunity
- Record type
- state certification list
- Named in the record
- T5@Chicago IV, LP
- Location precision
- Grayslake only
- Registry table row
- Row 28 on page 9 of Data Center Investment Program 2025 Annual Report, MOU table (Illinois DCEO)
- Company Name: T5@Chicago IV, LP
- Site Location: Grayslake
- Year: 2025
What this record does not establish
- That a permit, certification, tax status, or application means an operating data center.
- Current IT capacity, utility load, or generation capacity.
- Who operates the site. A company named in the record is not the operator unless the record says so.
- Who owns the site.
- Cooling redundancy. Mentioned equipment is not a design rating.
- Whether the record covers one building, a campus, or a suite, beyond the unit label the record itself uses.
That does not mean the row is wrong, and it does not mean no reviewed record exists for the same place. A link is added only when an identifier or source establishes the match.
Recorded information
What this page records, grouped by topic, with the source's units and qualifications. Company-reported values stay labeled as company-reported. Related listings are shown separately.
Licensed directory listing dcd-dir-001415
Licensed directory row.
Provider notes and the source narrative are printed on this page and are not repeated here.
Identity and relationships
- Provider facility type: data center
Provider facility type.
- AI-use label (provider): confirmed
Compute Atlas classification, not a DataCenterData finding.
Location and precision
- Grayslake, IL · Lake (Approximate location)
Roles
- Operator: T5 Data Centers
Operator label as published by the provider; no parent company is inferred.
Lifecycle
- Source-stated status: source-reported under construction
Provider status label; not a DataCenterData finding that the facility is operating.
- Announced: 2026
Provider-reported announcement date.
- Status history: 2026 · source-reported proposed
Status history supplied by the source.
- Status history: 2026-06-08 · source-reported under construction
Status history supplied by the source.
Area, acreage and buildings
- Land area: 400 acres (source-reported; parcel boundary not established)
Power capacity
- Reported capacity: Not established; source review excludes the published figure
Reproduced as the page prints it; not ranked or totaled; unknown is not zero.
- Electric utility: ComEd
Utility as named by the provider.
- Power source: Grid
Provider label.
Cooling, water, PUE and WUE
- Cooling: Closed-loop
Provider label.
- Reported water use: 0.05 million gallons per day (source-reported)
Whether this is metered use, a permit limit or a request is not established; see the provider water note.
Permits, incentives, jobs and proceedings
- Announced jobs: 20 permanent
Announced figures; whether they cover one building, a campus or a multi-phase program is not established.
- Community response: Provider label: contested
Compute Atlas characterization, not a DataCenterData assessment.
- Incentive reported by the source: Illinois Data Center Investment Program · Illinois · 2025 · $15.625 million (as stated)
Whether the incentive was approved, awarded or received is not established.
Sources, dates, limitations and corrections
- Provider update date: 2026-10-15
Provider update date is not a DataCenterData verification date.
Not yet recorded here: Connectivity · Services · Certifications and design ratings · Rack density · Availability · Specification links and contact.
Licensed values: adapted from Compute Atlas by Edward Kubiak under CC BY 4.0. Source-reported and not independently verified.
Update this profile with a public source. The request includes topics needing more information; this does not mean the facility lacks them. Corrections and additions are reviewed before publication.