All supplied research, searchable

Microsoft Plano Campus

Plano, IL · Microsoft

Reported status: proposed

Reported capacity: 71 MW (scope and operation unverified)

Approximate locality: approximate: Census 2024 Gazetteer place centroid for Plano. Census 2024 Gazetteer centroid; not a verified facility pin.

Original source · 2026-06-15

Review note: Microsoft Plano 500-acre Eldamain/Corneils campus in supplier sources is distinct from CyrusOne Yorkville proposal and Savion Plano Skies. No sourced operational date.

Microsoft Plano Data Center Site (Eldamain Road)

Plano, IL · Microsoft

Reported status: proposed

Exact location not published.

Original source · 2026-10-15

Review note: Microsoft Plano 500-acre Eldamain/Corneils campus in supplier sources is distinct from CyrusOne Yorkville proposal and Savion Plano Skies. No sourced operational date.

Plano Skies Data Center Campus (Rock Creek Road)

Plano, IL · Savion

Reported status: proposed

Exact location not published.

Original source · 2026-10-15

Review note: Savion Plano Skies at Rock Creek Rd is geographically separate from Microsoft Eldamain/Corneils, no unique building until approved.

Joliet Technology Center

Ridgewood, IL

Reported status: proposed

Exact location not published.

Original source · 2026-03-23

Review note: Joliet Technology Center 'Ridgewood' is geocoding nearest-Census error for same PowerHouse/Hillwood Joliet 795-acre proposal CSV1692-94; no separate campus or operating halls.

Allstate Data Center

Rochelle, IL

Reported status: approved/permitted (EPA air-permit record)

Regulatory reference: FRS facility point (stated accuracy 5 m). EPA FRS/ECHO; not a verified facility pin.

Original source · 2026-10-28

Review note: Allstate 1425 S Dement Road EPA may refer to company building, not independent operational data center unless owner/physical evidence.

Midwest Power Investors - Rochelle Steward Road Data Center

Rochelle, IL · Midwest Power Investors LLC; LFF Industrial

Reported status: cancelled

Reported capacity: 48 MW (scope and operation unverified)

Approximate locality: approximate: Census 2024 Gazetteer place centroid for Rochelle. Census 2024 Gazetteer centroid; not a verified facility pin.

Original source · 2026-07-17

Review note: Midwest Power Investors/LFF Industrial Rochelle Steward Road development requires dated city/proponent evidence, distinct from Rochelle Technology Center and Rock Air.

Rochelle Technology Center

Rochelle, IL · Rochelle Municipal Utilities

Reported status: operational

Exact location not published.

Original source · 2026-06-17

Review note: Rochelle Technology Center municipal PeeringDB listing needs city RMU confirmation, no imported network geometry.

Rock Air Data Center Campus

Rockford, IL · Monarch Energy

Reported status: proposed

Reported capacity: 1400 MW planned (scope and operation unverified)

Exact location not published.

Original source · 2026-09-12

Review note: Monarch Energy Rock Air near Rockford airport is planned large phased campus, not operational 1,400 MW IT load; exact entitlement and phase check required.

Project Kilo Data Center (South Elgin)

South Elgin, IL · White Rose Partners

Reported status: proposed

Exact location not published.

Original source · 2026-09-12

Review note: White Rose's official Project Kilo website identifies a single **potential** development at NW Kenyon and IL-25, South Elgin, updated Jul 22 2026; CSV1748/1749 one proposal, tenant not finalized, no operating claim.

Whiterose Partners - South Elgin Kenyon Road Data Center

South Elgin, IL · Whiterose Partners LLC

Reported status: proposed

Reported capacity: 48 MW (scope and operation unverified)

Approximate locality: approximate: Census 2024 Gazetteer place centroid for South Elgin. Census 2024 Gazetteer centroid; not a verified facility pin.

Original source · 2026-07-17

Review note: White Rose's official Project Kilo website identifies a single **potential** development at NW Kenyon and IL-25, South Elgin, updated Jul 22 2026; CSV1748/1749 one proposal, tenant not finalized, no operating claim.

Central Computing Facility, Cms

Springfield, IL

Reported status: approved/permitted (EPA air-permit record)

Regulatory reference: FRS facility point (stated accuracy 5 m). EPA FRS/ECHO; not a verified facility pin.

Original source · 2026-10-28

Review note: EPA Central Computing Facility CMS at 201 W Adams might be government office/data room; cannot count distinct building without Illinois CMS owner corroboration.

Eagle Rock Christian County Data Center

Taylorville, IL · Eagle Rock Partners

Reported status: proposed

Reported capacity: 1000.00 MW (scope and operation unverified)

Exact location not published.

Original source · 2026-06-18

Review note: Eagle Rock Partners Taylorville Christian County project must reconcile prior Meridian Technology Park CSV1617 misleading Clarksdale locality; distinct from Pekin and not assumed operating.

Cloverleaf Infrastructure - Troy Data Center

Troy, IL · Cloverleaf Infrastructure

Reported status: cancelled

Reported capacity: 500 MW (scope and operation unverified)

Exact location not published.

Original source · 2026-06-15

Review note: Supplier says canceled, but evidence shows Troy city adopted and extended data center moratorium through March 2027, so label project **paused/no formal application** unless withdrawal independently confirmed, not final canceled/operational.

Hsbc Vernon Hills Data Center

Vernon Hills, IL

Reported status: existing (EPA facility record; status unverified)

Regulatory reference: FRS facility point (stated accuracy 30 m). EPA FRS/ECHO; not a verified facility pin.

Original source · 2026-10-28

Review note: HSBC Vernon Hills EPA 475 Corporate Woods regulated record does not prove separate data center building.

VISA

Vernon Hills, IL · VISA

Reported status: existing (mapped; status unverified)

Exact location not published.

Original source · 2026-06-14

Review note: OSM VISA polygon lacks first-party site identity and public-rights-approved mapping.

Volo Data Center

Volo, IL · Chirisa Technology Parks

Reported status: operational

Reported capacity: 14 MW operational (scope and operation unverified)

Exact location not published.

Original source · 2026-10-15

Review note: Chirisa Volo 160,000 SF facility and CoreWeave tenant require original operator/property current proof; tenant GPU use not automatically new physically separate building.

CyrusOne Aurora CHI2 Permanent Sound-Mitigation Capital Retrofit

Warrenville, IL

Reported status: operational

Exact location not published.

Original source · 2026-10-09

Review note: CyrusOne CHI2 Aurora generator sound-mitigation retrofit (source city Warrenville nearest Census) is maintenance for existing Aurora campus, **not** additional building or current power demand.

CyrusOne - Sangamon County Waverly Data Center

Waverly, IL · CyrusOne

Reported status: proposed

Reported capacity: 634 MW (scope and operation unverified)

Approximate locality: approximate: Census 2024 Gazetteer place centroid for Waverly. Census 2024 Gazetteer centroid; not a verified facility pin.

Original source · 2026-07-19

Review note: CyrusOne Waverly/Talkington Sangamon sources describe same planned contested project, crosswalk to Loami original CSV1701 pending legal parcel proof; 3 rows not 3 campuses.

CyrusOne Sangamon County Data Center

Waverly, IL · CyrusOne

Reported status: approved/permitted

Reported capacity: 634 MW planned (scope and operation unverified)

Exact location not published.

Original source · 2026-09-23

Review note: CyrusOne Waverly/Talkington Sangamon sources describe same planned contested project, crosswalk to Loami original CSV1701 pending legal parcel proof; 3 rows not 3 campuses.

CyrusOne

Waverly/ Talkington Twp, IL

Reported status: under construction

Reported capacity: 632.00 MW (scope and operation unverified)

Exact location not published.

Original source · 2026-06-18

Review note: CyrusOne Waverly/Talkington Sangamon sources describe same planned contested project, crosswalk to Loami original CSV1701 pending legal parcel proof; 3 rows not 3 campuses.

Colovore Llc

West Chicago, IL

Reported status: approved/permitted (EPA air-permit record)

Regulatory reference: FRS facility point (stated accuracy 5 m). EPA FRS/ECHO; not a verified facility pin.

Original source · 2026-10-28

Review note: Colovore LLC EPA 1345 W Washington in West Chicago might be site, require independent landlord/operator and lifecycle before admission.

Proposed Data Center Ord-2

West Chicago, IL

Reported status: existing (EPA facility record; status unverified)

Regulatory reference: FRS facility point (stated accuracy 330 m). EPA FRS/ECHO; not a verified facility pin.

Original source · 2026-10-28

Review note: EPA Proposed Data Center ORD-2 Wegner/Washington is regulated project, not guarantee a constructed operating building; reconcile Colovore West Chicago parcel.

Unnamed source-mapped location

West Chicago, IL

Reported status: existing (mapped; status unverified)

Exact location not published.

Original source · 2026-02-09

Review note: Unnamed IM3/OSM site shape in West Chicago cannot be promoted to public geometry or unique canonical without independently supported site.

Equinix CH7

Westmont, IL · Equinix

Reported status: operational

Reported capacity: 12.00 MW (scope and operation unverified)

Exact location not published.

Original source · 2026-07-23

Review note: Equinix current official CH7 at 111 Plaza Drive, Westmont; CSV1763 is existing accepted root reviewed:equinix-ch7-il-20261029, no duplicate facility.

Existing project record

Cyrusone Chi6 Facility

Wood Dale, IL

Reported status: approved/permitted (EPA air-permit record)

Exact location not published.

Original source · 2026-10-28

Review note: CyrusOne CHI6 Wood Dale EPA regulated 460/480 Bryn Mawr reflects one phased two-building campus; source legal entry does not establish each building operational.

CyrusOne Wood Dale Campus

Wood Dale, IL · CyrusOne

Reported status: under construction

Reported capacity: 18 MW planned (scope and operation unverified)

Exact location not published.

Original source · 2026-10-15

Review note: CyrusOne CHI6 Wood Dale EPA regulated 460/480 Bryn Mawr reflects one phased two-building campus; source legal entry does not establish each building operational.

Element Critical Chicago One

Wood Dale, IL · Element Critical

Reported status: operational

Reported capacity: 7 MW operational (scope and operation unverified)

Exact location not published.

Original source · 2026-09-21

Review note: Element Critical official Chicago One at 711 N Edgewood Ave, Wood Dale, **distinct** from Chicago Two 341 Haynes. Both facilities in same metro with different street addresses.

Element Critical Chicago Two

Wood Dale, IL · Element Critical

Reported status: operational

Reported capacity: 5 MW operational (scope and operation unverified)

Exact location not published.

Original source · 2026-09-21

Review note: Element Critical Chicago Two operator verifies 341 Haynes Drive, Wood Dale, physically different facility from Chicago One 711 Edgewood.

CyrusOne - Yorkville Campus

Yorkville, IL · CyrusOne; C1 Yorkville LLC

Reported status: proposed

Reported capacity: 654 MW (scope and operation unverified)

Approximate locality: approximate: Census 2024 Gazetteer place centroid for Yorkville. Census 2024 Gazetteer centroid; not a verified facility pin.

Original source · 2026-07-17

Review note: CyrusOne Yorkville Technology Campus: operator confirms site work started early 2026, first building target late 2027 and operations 2028. CSV1739 misclassified city Plano by nearest Census, this is Yorkville; four source rows one campus, not 4 operating buildings.

CyrusOne CHI-11 Data Center Campus

Yorkville, IL · CyrusOne (C1 Yorkville, LLC)

Reported status: under construction

Reported capacity: 480 MW planned (scope and operation unverified)

Exact location not published.

Original source · 2026-09-23

Review note: CyrusOne Yorkville Technology Campus: operator confirms site work started early 2026, first building target late 2027 and operations 2028. CSV1739 misclassified city Plano by nearest Census, this is Yorkville; four source rows one campus, not 4 operating buildings.