Janesville sought a partner to redevelop the 250-acre former General Motors assembly plant as a data center campus. Colorado-based Viridian proposed APECS (Advanced Power & Energy Computing System), an $8 billion campus of nine to eleven buildings for cloud and AI workloads. The Common Council let the Viridian letter of intent expire in June 2026.
In September 2026 the city adopted a 12-month moratorium on data centers. In November 2026 voters approved a referendum that requires a public vote before the city commits the site to any project worth $450 million or more.
| Distance | Site | About |
|---|---|---|
| 1.45 miles | AT&T: 301 E Milwaukee St, Janesville |
AT&T's main telephone exchange in downtown Janesville, Wisconsin, the hub of the city's wireline network.
|
| 5.96 miles | Panattoni: Beloit, Wisconsin |
Panattoni proposed a large data center campus on quarry land in the towns of Beloit and Turtle, Wisconsin. The project stalled in 2026 after Turtle rejected a cost agreement and both towns adopted moratoria.
|
| 11.28 miles | AT&T: 415 Prospect St, Beloit |
AT&T's main telephone exchange in Beloit, Wisconsin, on Prospect Street.
|
Viridian Partners is a privately owned commercial real estate developer and investor focused on acquiring and redeveloping brownfield properties in supply constrained US markets. Since its 2003 formation, Viridian’s redeveloped over 1,000 distressed acres, with an improved value of $3.0+ billion, in highly regulated markets, including California, Florida, and New Jersey.
September 26, 2025 Wisconsin
A data center development in Menomonie, Wisconsin, has been delayed. In a meeting on September 22, Mayor Randy Knaack said that he had drafted a memo to developer Balloonist LLC stating that the city was no longer interested in pursuing the project.“I’m not thrilled about the data center coming...
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February 22, 2023 Wisconsin
Northwestern Mutual is abandoning its campus in Franklin, Wisconsin, on the outskirts of Milwaukee, as part of a $500 million effort to relocate to an office complex in downtown Milwaukee. Per the Milwaukee Journal Sentinel, this is partially due to the fact that the corporation no longer needs...
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