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Data center project · Dunn County, Wisconsin

Balloonist LLC data center, Menomonie

Stalled · A $1.6 billion project by an anonymous LLC was halted after Menomonie's mayor said the city would not negotiate a development agreement or tax district.

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Status
Stalled · as of Sept. 22, 2025
Location
Land annexed into the City of Menomonie from the Red Cedar area, between 650th and 690th avenues north of I-94 · Dunn County
Status note
The mayor refused to negotiate a development agreement or TID; a January 2026 ordinance means the developer would likely have to reapply under a new data center district.
Power
Not reported
No power figure published.
Investment
$1.6 billion (reported)
Developer and team
Balloonist LLC
End user
Undisclosed
Evidence
News reports; primary records not yet obtained
Size class
Under 50 MW (outside main scope; kept for completeness)
Map position approximate, from the reported address or area. Updated Oct. 17, 2026.

Updates, newest first

  1. July 6, 2026 City officials said a final draft of fuller data center rules would be introduced Aug. 4, 2026. (Civic Media, July 6, 2026)
  2. Jan. 5, 2026 The council unanimously excluded data centers from its warehousing definition and created a separate data center district with height and setback rules. (WPR, Jan. 7, 2026)
  3. Sept. 22, 2025 Mayor Randy Knaack told Balloonist the city would not negotiate a development agreement or create a TID at this time. (WEAU 13 News, Sept. 23, 2025)
  4. Aug. 4, 2025 The city council approved annexing and rezoning the land as restricted industrial; no site plan was filed and the company said construction would not start before 2027. (Data Center Dynamics, Aug. 19, 2025)

Conflicts and open questions

  • Acreage and the electric utility are not given in the sources opened.

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