CyrusOne CHI3
2725 Bilter Road · Aurora, DuPage County, IL
Source: OpenStreetMap
CyrusOne CHI3 is a mapped data center in DuPage County, IL, operated by CyrusOne LLC. DataCentersExposed has documented a 212,868 sq ft footprint at this site.
Reporting by Eric Keller · Updated Jun 14, 2026
Most sites are mapped — located but awaiting a second source. How we verify
Dot size = disclosed capacity (MW). Smallest = undisclosed, not small.
Overview
source: linkCHI3 is a colocation data center in Aurora, DuPage County, Illinois, run by CyrusOne LLC. Public records map its footprint at 212,868 square feet. The site draws power from Commonwealth Edison Co inside the PJM grid.
Operator chain
- Ultimate parentCyrusOne LLC
- Files asCyrusOne LLC
- This facilityCyrusOne CHI3
In the news
source: GDELTData-center discussions in DuPage County
source: LocalView (CC0)Local-government meetings in this county that discussed data centers, each cued to the moment. From the public LocalView corpus of government meetings on YouTube — a county-level signal, not necessarily about this specific site.
Tax breaks & subsidies
source: Good Jobs First / GASB 77These tax breaks are recorded to CyrusOne LLC (the operator/parent) and may cover this or other sites — no state names the recipient at the facility level.
- Texas Qualifying Large Data Center Project Exemption$0State of Texas · granted 2022 · term — yr · source
- Texas Qualifying Data Center Exemption$0State of Texas · granted 2017 · term — yr · source
- Texas Qualifying Data Center Exemption$0State of Texas · granted 2016 · term — yr · source
Illinois reported $983.2M in Data Center Investment Program — state & local sales/use tax exemption (20 ILCS 605/605-1025; administered by DCEO) (2019-2024 (27 certified data centers; cumulative estimated exemption value)) (Illinois Department of Commerce and Economic Opportunity (DCEO)). Program-wide, not attributable to this site.
Water use
No measured record exists, so this is a low-confidence model from 175 MW (interconnection capacity): 1.8 L/kWh cooling (temperate climate) + 0.5 gal/kWh embedded in PJM grid mix. How we estimate. Have a utility document? Send it and we'll replace this with the real figure.
EPA permits & violations
source: EPA ECHONo reported violations as of last sync.
Environmental permits
source: Permit register- Clean Air Act permitted sourceIL000043120AEZNAICS 518210; ECHO compliance status: No Violation Identified
- Clean Air Act permitted sourceIL000043407AEHNAICS 518210; ECHO compliance status: No Violation Identified
What this site costs the grid
source: PJM RPM auction reportsPJM's capacity auction sets a $/MW-day price that utilities pass on to every household and business in the zone. This site sits in PJM's COMED pricing zone, where soaring data-center demand is a documented driver. See the full zone-by-zone breakdown →
An estimated ~40 to 90 MW of load at the zone's $333/MW-day, annualized — the capacity charge a load this size carries at the current auction price. Estimated from the building footprint at 200 to 400 W/ft² (the typical range for modern data centers). A rough order-of-magnitude figure, not a metered or permitted capacity.
Separately, a typical home in this zone pays an estimated $4 to $10/mo more on the capacity portion of its bill that PJM's market monitor attributes to data-center demand. See your address's full impact →
Air quality near this site
source: AirNowAir Quality Index from the nearest AirNow reporting area (Aurora and Elgin), as of 2026-06-10. Regional context — not this facility's own emissions.
Who lives nearby
source: Census ACS 2023Demographics of the census tract this facility sits in (American Community Survey 5-year estimates). Environmental-justice context for who bears the local impacts.
Nearest school
source: HIFLD / NCESThe nearest public school, Metea Valley High School in Aurora, is 0.9 mi from this site (2,715 students).
Schools are sensitive receptors for the noise, backup-generator exhaust, and traffic a large data center brings. Straight-line distance to the nearest public school (HIFLD/NCES, US public schools only).
Hearings timeline
No public-hearing records linked to this site yet. We surface planning-commission and board-of-supervisors dates when a record names a facility. If you know of a hearing on this site, tell us.