APECS Data Center Campus

The APECS project (Advanced Power & Energy Computing System) is a transformative proposal by Colorado-based Viridian Acquisitions to redevelop the historic 250-acre former General Motors Assembly Plant site in Janesville, Wisconsin. Representing a potential $8 billion investment, the project aims to establish a high-tech data center campus—consisting of either 9 or 11 buildings—designed to support hyperscale cloud computing and AI workloads.

By repurposing this long-vacant industrial brownfield, the development is expected to create approximately 600 permanent jobs and 1,200 construction roles, while generating significant tax revenue for the city. Although it offers a major economic boost, the project has also sparked local debate regarding its substantial power demand and its impact on the surrounding neighborhood, leading to a period of intensive due diligence and public workshops as of early 2026.

Located at 1000 General Motors Drive and 544 Kellogg Avenue, the property housed the 4.8 million-square-foot Janesville Assembly Plant. GM ceased operations in 2008 after nearly 90 years of producing SUVs like the Chevy Tahoe and GMC Yukon. The site, acquired by a private developer in 2017 but left undeveloped, is now being purchased by the city to facilitate this redevelopment.