Wisconsin Data Center Boom Raises Grid, Water and Community Concerns
Wisconsin is seeing a major wave of proposed data center development, increasing pressure on the state’s electric grid, transmission infrastructure and water resources. Microsoft withdrew from a Caledonia project after community concerns, while large projects by Microsoft and Vantage remain under development and utility regulators consider how their costs should be allocated.
Wisconsin has at least 47 operating or proposed data centers, with major projects concentrated around Milwaukee, Madison, Kenosha and southeastern Wisconsin. Vantage is advancing a $15 billion, 672-acre project near Port Washington as the first phase of a larger campus, while Microsoft continues planning large facilities in Mount Pleasant and elsewhere in the region. Microsoft withdrew from a proposed Caledonia site after citing community concerns, following local opposition to another Racine County project.
Utility executives said additional generation, transmission and storage will be needed to serve the expected data center load, while consumer advocates warned that ordinary ratepayers could bear some infrastructure costs. Environmental advocates raised concerns about the projects’ electricity and water demands, although developers and industry representatives pointed to closed-loop and waterless cooling systems. Two data center-related cost cases remain pending before the Wisconsin Public Service Commission, including filings involving We Energies and Alliant Energy.