{ "schema_version": 1, "source_compilation_context": { "il": { "attribution": { "inventory": { "name": "Compute Atlas", "creator": "Edward Kubiak", "url": "https://www.compute-atlas.com/api", "license": "CC BY 4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "snapshot_url": "https://www.compute-atlas.com/api/facilities", "retrieved": "2026-10-14", "sha256": "79ad432dab7c128e428234c9d0dd40933114b415a4a5d697db00095637d50f37", "changes": "Added provenance, publication-date distinctions, display-safe wording, quarantine flags and state partitioning. Original source records retained locally." }, "counties": "U.S. Census Bureau county boundaries (public domain)", "research": "Field-specific source context. See the linked source and limits on each record." }, "source_data_url": "https://datacentersatlas.com/data/il.json", "updated": "2026-10-26" } }, "scope": "Retained county context, which can be broad or unresolved. No parcel or municipal jurisdiction is inferred. Research records retain their sources, dates and location limits. Counts are not a census of operating buildings. Company name links alone do not establish ownership or operation.", "collection": { "kind": "counties", "key": "17097", "label": "Lake County, Illinois" }, "records": [ { "id": "chirisa-volo-data-center-il", "state": "il", "kind": "facility", "name": "Volo Data Center", "group": "unknown", "status": "Status unclear", "raw_status": "", "status_field": "", "crypto": false, "type": "Data center (inventory classification)", "counties": [ "Lake" ], "city": "Volo", "address": "", "who": "", "end_user": "", "mw": null, "power": "", "power_note": "", "investment": "", "jobs": "", "acres": null, "utility": "", "water": "", "incentives": "", "note": "Manual source context is available for this inherited inventory record. The inventory label and approximate geography are retained for discovery. This is not certification of current operation, ownership, a separate physical building, technical capacity or a precise parcel. Missing fields remain unknown. Illinois statewide owner/operator certificate register and commitments,notbuilding-levelallocations. 34approvedapplications/certificates not34verified physical operating buildings;91tenantcertificates not91more sites. Investment commitments not audited spend;666.6Mcalculated6.25percent estimate not actual foregone tax measured.731listednewjobs not observed employment. Company/campus totals cannot repeat for each building. Legal entity aliases and exactbuilding crosswalk remain explicit holds. Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building.", "date": "", "events": [], "timeline": [], "opened": "", "tier": "", "sources": [ { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "date": "", "published": "", "checked": "2026-10-14", "date_kind": "publication date not established", "label": "Reviewed source" } ], "loc": { "lat": 42.32318, "lng": -88.00381, "precision": "county", "basis": "Shown at county level only. The dot is placed inside the county for the map and is not the site, its address or a parcel." }, "reviewed_evidence": [ { "overlay": "government-primary-review-round7-2026-10-14.json", "scope": "Illinois statewide owner/operator certificate register and commitments,notbuilding-levelallocations", "fields": { "program_report_year": 2025, "program_register_as_of": "2025-12-31", "applications_received": 35, "approved_owner_operator_applications": 34, "operator_certificates_issued": 34, "tenant_certificates_issued": 91, "construction_credit_certificates_issued": 0, "total_investment_commitments_usd": 10665815092, "estimated_tax_benefits_usd": 666613443, "estimated_tax_benefit_calculation_percent": 6.25, "listed_new_job_commitments": 731, "investment_commitment_period_months": 60 }, "notes": [ "34approvedapplications/certificates not34verified physical operating buildings;91tenantcertificates not91more sites. Investment commitments not audited spend;666.6Mcalculated6.25percent estimate not actual foregone tax measured.731listednewjobs not observed employment. Company/campus totals cannot repeat for each building. Legal entity aliases and exactbuilding crosswalk remain explicit holds.", "Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building." ], "sources": [ { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "date": "", "published": "", "checked": "2026-10-14", "date_kind": "publication date not established", "label": "Reviewed source" } ], "whole_record_certified": false }, { "overlay": "S3-Illinois-DCEO-2025-20261015", "scope": "Illinois DCEO 2025 program entry for Chirisa Volo LLC in Volo. The source reports an MOU/certificate context as of December 31, 2025, not actual payments, current certificate eligibility or a physical-site census.", "fields": { "reported_program_party": "Chirisa Volo LLC", "reported_program_locality": "Volo", "mou_year_reported": 2023, "program_report_as_of": "2025-12-31", "investment_commitment_usd": 262000000, "formula_based_tax_benefit_estimate_usd": 16375000, "new_jobs_in_program_table": 20, "financial_scope": "Investment is a reported commitment within an agreed 60-month window. Tax benefit is an estimate at 6.25% of commitment, not paid benefits or verified savings. Reported job counts do not independently establish actual hiring or payroll. No amount is added to legacy investment/jobs fields.", "program_identity_scope": "Explicit facility designation or company/locality association with the existing Volo Data Center research record. The relationship is a scoped research inference, not proof of a distinct campus, parcel, current operator role or exact certificate footprint." }, "notes": [ "The report combines owners and operators; no specific party role, legal ownership, tax performance, recapture status or current certificate eligibility is inferred. The report gives a year, not an exact MOU execution or opening date.", "Current operating stage needs separate primary evidence. A tax-program approval is not a construction approval, an operating building or proof of an exact parcel. Original coordinates, precision, opening, locality and legacy financial/power figures remain unchanged.", "The source table row estimates sum to $1 more than the printed aggregate. Both are retained as published. This record uses its printed row value, with no correction or aggregate allocation." ], "sources": [ { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "published": "", "date": "", "checked": "2026-10-15", "label": "Reviewed government record" } ], "checked": "2026-10-15", "whole_record_certified": false }, { "overlay": "Codex 3 research cohort 60", "scope": "The original State 2025 data center annual report table names Chirisa Volo LLC in Volo, with a program year, investment commitment, estimated tax benefits and an underserved area flag. This establishes a bounded incentive program context rather than commissioned computing, completed investment or actual tax savings. The original provider page had an unavailable robots response and no body was requested or obtained through another company host. The exact present facility stage remains unknown, and the report year is not an exact publication or opening day.", "fields": { "current_stage_evidence": { "outcome": "official_incentive_program_context_provider_stage_held", "scope": "The original State 2025 data center annual report table names Chirisa Volo LLC in Volo, with a program year, investment commitment, estimated tax benefits and an underserved area flag. This establishes a bounded incentive program context rather than commissioned computing, completed investment or actual tax savings. The original provider page had an unavailable robots response and no body was requested or obtained through another company host. The exact present facility stage remains unknown, and the report year is not an exact publication or opening day." }, "source_read_scope": { "original_state_table_physical_page8_read_and_viewed": true, "state_commitments_not_achieved_compute_or_savings": true, "underserved_flag_not_operating_flag": true, "provider_robots_hold_respected": true, "no_quantity_role_or_location_export": true } }, "notes": [ "The original State 2025 data center annual report table names Chirisa Volo LLC in Volo, with a program year, investment commitment, estimated tax benefits and an underserved area flag. This establishes a bounded incentive program context rather than commissioned computing, completed investment or actual tax savings. The original provider page had an unavailable robots response and no body was requested or obtained through another company host. The exact present facility stage remains unknown, and the report year is not an exact publication or opening day.", "Existing location, jurisdiction, provider roles, identities, quantities and physical opening dates remain unchanged. Proposal and administrative evidence do not certify computing operation." ], "sources": [ { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "published": "", "date": "", "checked": "2026-10-23", "label": "Reviewed government record" } ], "checked": "2026-10-23", "whole_record_certified": false } ], "manual_source_reviewed": true, "whole_record_certified": false, "field_evidence_present": true, "inventory_label_retained": true, "precision_label": "Exact site not published; shown at county level", "summary": "Volo · Lake · Source context reviewed", "location_display": { "policy": "reviewed-map-references-2026-10-23", "decision": "withheld_unreviewed_point", "scope": "The available point evidence does not establish a supported site location. No site pin, nearby distance or aerial destination is published. The original coordinate and its provenance remain in research history.", "county_display": "17097" } }, { "id": "t5-chicago-iv-grayslake-il", "state": "il", "kind": "facility", "name": "T5 Chicago IV (CHI IV)", "group": "proposed", "status": "Listed proposal", "raw_status": "proposed", "status_field": "current_status", "crypto": false, "type": "Data center (inventory classification)", "counties": [ "Lake" ], "city": "Grayslake", "address": "", "who": "", "end_user": "", "mw": null, "power": "", "power_note": "", "investment": "", "jobs": "", "acres": null, "utility": "", "water": "", "incentives": "", "note": "Manual source context is available for this inherited inventory record. The inventory label and approximate geography are retained for discovery. This is not certification of current operation, ownership, a separate physical building, technical capacity or a precise parcel. Missing fields remain unknown. Illinois statewide owner/operator certificate register and commitments,notbuilding-levelallocations. 34approvedapplications/certificates not34verified physical operating buildings;91tenantcertificates not91more sites. Investment commitments not audited spend;666.6Mcalculated6.25percent estimate not actual foregone tax measured.731listednewjobs not observed employment. Company/campus totals cannot repeat for each building. Legal entity aliases and exactbuilding crosswalk remain explicit holds. Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building.", "date": "", "events": [ [ "2024-05-02", "T5 published its May 2, 2024 original Grayslake campus announcement. Development and the stated fourth quarter 2027 capacity target were prospective; this dates the issuer publication rather than an accomplished construction or computing start." ] ], "timeline": [], "opened": "", "tier": "", "sources": [ { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "date": "", "published": "", "checked": "2026-10-14", "date_kind": "publication date not established", "label": "Reviewed source" }, { "url": "https://t5datacenters.com/resources/t5-data-centers-announces-further-expansion-into-chicago-suburbs-with-new-480-mw-data-center-campus/", "host": "t5datacenters.com", "published": "2024-05-02", "date": "2024-05-02", "checked": "2026-10-23", "label": "Reviewed operator source" } ], "loc": { "lat": 42.33479, "lng": -88.01649, "precision": "county", "basis": "Shown at county level only. The dot is placed inside the county for the map and is not the site, its address or a parcel." }, "reviewed_evidence": [ { "overlay": "government-primary-review-round7-2026-10-14.json", "scope": "Illinois statewide owner/operator certificate register and commitments,notbuilding-levelallocations", "fields": { "program_report_year": 2025, "program_register_as_of": "2025-12-31", "applications_received": 35, "approved_owner_operator_applications": 34, "operator_certificates_issued": 34, "tenant_certificates_issued": 91, "construction_credit_certificates_issued": 0, "total_investment_commitments_usd": 10665815092, "estimated_tax_benefits_usd": 666613443, "estimated_tax_benefit_calculation_percent": 6.25, "listed_new_job_commitments": 731, "investment_commitment_period_months": 60 }, "notes": [ "34approvedapplications/certificates not34verified physical operating buildings;91tenantcertificates not91more sites. Investment commitments not audited spend;666.6Mcalculated6.25percent estimate not actual foregone tax measured.731listednewjobs not observed employment. Company/campus totals cannot repeat for each building. Legal entity aliases and exactbuilding crosswalk remain explicit holds.", "Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building." ], "sources": [ { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "date": "", "published": "", "checked": "2026-10-14", "date_kind": "publication date not established", "label": "Reviewed source" } ], "whole_record_certified": false }, { "overlay": "S3-Illinois-DCEO-2025-20261015", "scope": "Illinois DCEO 2025 program entry for T5@Chicago IV, LP in Grayslake. The source reports an MOU/certificate context as of December 31, 2025, not actual payments, current certificate eligibility or a physical-site census.", "fields": { "reported_program_party": "T5@Chicago IV, LP", "reported_program_locality": "Grayslake", "mou_year_reported": 2025, "program_report_as_of": "2025-12-31", "investment_commitment_usd": 250000000, "formula_based_tax_benefit_estimate_usd": 15625000, "new_jobs_in_program_table": 20, "financial_scope": "Investment is a reported commitment within an agreed 60-month window. Tax benefit is an estimate at 6.25% of commitment, not paid benefits or verified savings. Reported job counts do not independently establish actual hiring or payroll. No amount is added to legacy investment/jobs fields.", "program_identity_scope": "Explicit facility designation or company/locality association with the existing T5 Chicago IV (CHI IV) research record. The relationship is a scoped research inference, not proof of a distinct campus, parcel, current operator role or exact certificate footprint." }, "notes": [ "The report combines owners and operators; no specific party role, legal ownership, tax performance, recapture status or current certificate eligibility is inferred. The report gives a year, not an exact MOU execution or opening date.", "Current operating stage needs separate primary evidence. A tax-program approval is not a construction approval, an operating building or proof of an exact parcel. Original coordinates, precision, opening, locality and legacy financial/power figures remain unchanged.", "The source table row estimates sum to $1 more than the printed aggregate. Both are retained as published. This record uses its printed row value, with no correction or aggregate allocation." ], "sources": [ { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "published": "", "date": "", "checked": "2026-10-15", "label": "Reviewed government record" } ], "checked": "2026-10-15", "whole_record_certified": false }, { "overlay": "Codex 3 research cohort 60", "scope": "The original May 2, 2024 T5 release announces a planned Grayslake campus, says development will begin and gives a future fourth quarter 2027 capacity target. This supports a listed proposal, without independently accomplished construction or computing service. The State 2025 annual report table separately names T5 at Chicago IV in Grayslake, which is an incentive program record and not operation. Chicago III in Northlake is a distinct project and is not merged. Investment commitments, estimated tax benefits, employment and target capacity remain prospective or administrative rather than achieved physical outcomes.", "fields": { "current_stage_evidence": { "outcome": "original_named_grayslake_planned_campus", "scope": "The original May 2, 2024 T5 release announces a planned Grayslake campus, says development will begin and gives a future fourth quarter 2027 capacity target. This supports a listed proposal, without independently accomplished construction or computing service. The State 2025 annual report table separately names T5 at Chicago IV in Grayslake, which is an incentive program record and not operation. Chicago III in Northlake is a distinct project and is not merged. Investment commitments, estimated tax benefits, employment and target capacity remain prospective or administrative rather than achieved physical outcomes." }, "source_read_scope": { "complete_original_dated_issuer_main_body_read": true, "state_annual_report_table_physical_pages8and9_read_and_viewed": true, "table_underserved_flag_not_operating_flag": true, "separate_chicagoiii_northlake_not_grayslake": true, "no_quantity_role_or_location_export": true } }, "notes": [ "The original May 2, 2024 T5 release announces a planned Grayslake campus, says development will begin and gives a future fourth quarter 2027 capacity target. This supports a listed proposal, without independently accomplished construction or computing service. The State 2025 annual report table separately names T5 at Chicago IV in Grayslake, which is an incentive program record and not operation. Chicago III in Northlake is a distinct project and is not merged. Investment commitments, estimated tax benefits, employment and target capacity remain prospective or administrative rather than achieved physical outcomes.", "Existing location, jurisdiction, provider roles, identities, quantities and physical opening dates remain unchanged. Proposal and administrative evidence do not certify computing operation." ], "sources": [ { "url": "https://t5datacenters.com/resources/t5-data-centers-announces-further-expansion-into-chicago-suburbs-with-new-480-mw-data-center-campus/", "host": "t5datacenters.com", "published": "2024-05-02", "date": "2024-05-02", "checked": "2026-10-23", "label": "Reviewed operator source" }, { "url": "https://dceo.illinois.gov/content/dam/soi/en/web/dceo/aboutdceo/reportsrequiredbystatute/2025-data-centers-annual-report.pdf", "host": "dceo.illinois.gov", "published": "", "date": "", "checked": "2026-10-23", "label": "Reviewed government record" } ], "checked": "2026-10-23", "whole_record_certified": false } ], "manual_source_reviewed": true, "whole_record_certified": false, "field_evidence_present": true, "inventory_label_retained": true, "precision_label": "Exact site not published; shown at county level", "summary": "Grayslake · Lake · Source context reviewed", "status_scope": "The original May 2, 2024 T5 release announces a planned Grayslake campus, says development will begin and gives a future fourth quarter 2027 capacity target. This supports a listed proposal, without independently accomplished construction or computing service. The State 2025 annual report table separately names T5 at Chicago IV in Grayslake, which is an incentive program record and not operation. Chicago III in Northlake is a distinct project and is not merged. Investment commitments, estimated tax benefits, employment and target capacity remain prospective or administrative rather than achieved physical outcomes.", "event_evidence": [ { "date": "2024-05-02", "text": "T5 published its May 2, 2024 original Grayslake campus announcement. Development and the stated fourth quarter 2027 capacity target were prospective; this dates the issuer publication rather than an accomplished construction or computing start.", "kind": "announced", "sources": [ { "url": "https://t5datacenters.com/resources/t5-data-centers-announces-further-expansion-into-chicago-suburbs-with-new-480-mw-data-center-campus/", "host": "t5datacenters.com", "published": "2024-05-02", "date": "2024-05-02", "checked": "2026-10-23", "label": "Reviewed operator source" } ] } ], "location_display": { "policy": "reviewed-map-references-2026-10-23", "decision": "withheld_unreviewed_point", "scope": "The available point evidence does not establish a supported site location. No site pin, nearby distance or aerial destination is published. The original coordinate and its provenance remain in research history.", "county_display": "17097" } } ], "compilation_license": "withheld_pending_owner_decision" }