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Data center campus · Land around the Byron nuclear plant, Rockvale and Marion townships, Ogle County, Illinois

Constellation Byron Generating Station land

Site zoned or marketed as of Jan. 2, 2025

Ogle County rezoned 524 acres around the Byron nuclear plant to industrial at Constellation's request so it could market the site and power for uses such as a data center.

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PowerNot statedNot reported in the records found
Site524acres

Who is behind it

ProjectConstellation Byron Generating Station land
Developer and teamConstellation Energy
End userNot found in the recordsNot yet named in any record or credited report we have found.

The record, newest first

  1. Constellation said no decision had been made on the land; the county board chairman said a data center was among options and would need a special use permit. (25 News Now (WEEK) / WIFR, Jan. 2, 2025)

  2. A county committee voted 5-1-1 for rezoning 524 acres and a text amendment allowing data centers as a special use in I-1 districts. (Shaw Local, Aug. 13, 2024)

  3. The County Board rezoned the 524 acres to industrial. (25 News Now (WEEK) / WIFR, Jan. 2, 2025)

  4. The Zoning Board of Appeals voted 3-2 to approve a reduced petition. (Shaw Local, Aug. 13, 2024)

  5. Constellation's rezoning request around Byron was reported, without project details. (American Nuclear Society, Nuclear News, July 15, 2024)

  6. The Regional Planning Commission voted 3-2 to recommend denying the original 596-acre rezoning. (Shaw Local, Aug. 13, 2024)

Conflicts and open questions

  • Requested acreage reported as 596 acres (Shaw Local) and 658.8 acres (Nuclear News); 524 acres were rezoned.
  • Coordinates approximate, at the Byron plant.
  • Later community opposition was reported in 2026 but not confirmed from an opened source.

The full record

Status note
Land rezoned industrial with data centers allowed as a special use; no customer or special use permit reported.
Evidence
News reports; primary records not yet obtained
Size class
50 MW or more (tracker scope)
Map position approximate, from the reported address or area. Updated Oct. 17, 2026.