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Yorkville, IL · Kendall County County · 41.700°N 88.461°W

Project Cardinal Data Center Campus

Pioneer Development LLC

PermittedLikely AI-specificConfirmed

This facility is permitted and has not been reported as operational. Details are based on public filings and announcements as of .

Key facts

Location
Yorkville, IL, Kendall County County
Capacity
1,800 MW planned
Powered by
—
Announced
—
Last updated

Civic impact

Economics

Land
1,037 acres

Energy & water

Energy source
Grid · Utility: ComEd
Cooling
Closed-loop
Water use
0.043 MGD

Served by a ComEd substation off Eldamain Road; full power allocation still pending ComEd approval. The annexation agreement prohibits on-site nuclear generation. No confirmed on-site generation.

Air-cooled closed-loop system uses ~42,500 gallons/day (Shaw Local, 2026-03-12), revised down from an original 350,000 gpd proposal; "no municipal water will be used for cooling."

Community sentiment

Litigation

Two active lawsuits as of July 2026. (1) John Bryan (filed Oct 28, 2025): a conditional settlement was before the June 23, 2026 City Council — terms limited to a phasing-order revision (NE-SE-W instead of NE-W-SE), no monetary payment to Bryan. (2) Preserve Our Yorkville & Community LLC (filed April 2026): broader suit alleging inadequate annexation/rezoning notice and deviation from the 2016 Comprehensive Plan; still ongoing as of June 30, 2026. Pioneer Development also sought an 18-month extension (to Dec 31, 2027) to close on all parcels — failure voids the annexation agreement. A $51M developer impact-fee package flows FROM the developer TO the city (schools/fire/projects), not a subsidy; no DCEO certification found and Illinois paused its Data Center Investment Program on July 1, 2026.

Yorkville council to consider settlement in Project Cardinal lawsuit

Status history

  1. Proposed

    Pioneer Development LLC submitted annexation, rezoning, and utility applications to City of Yorkville for 1,037-acre, 14-building campus

    Yorkville data center approval after nearly 6-hour contentious City Council meeting
  2. Permitted

    Yorkville City Council approved annexation, rezoning, utility, and infrastructure agreements 12:51 a.m. March 11 after nearly 6-hour meeting; air-cooled design with daily water use capped at approximately 42,500 gpd

    Yorkville data center approval after nearly 6-hour contentious City Council meeting

Location

Sources & data provenance

Confirmed: data verified against official filings, permits, or direct operator announcements.

Last updated:

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