UW–Madison expert outlines how counties can regulate data centers and where limits lie

Jul 28, 2026

Carl Green, a community planning specialist, told Ashland County supervisors that data centers vary widely in scale and impact, explained the kinds of local zoning tools available (permitted/conditional uses, development standards, reclamation bonds) and cautioned that some state incentives and municipal annexations limit county control.

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Carl Green, a community planning specialist from the University of Wisconsin–Madison, gave a roughly 20‑minute informational presentation describing the range of data‑center types, their energy and water demands, and the regulatory tools local governments can use.

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