DNR warns energy demand, not on-site water use, may be the bigger issue for data centers

Sep 10, 2026

DNR staff told Portage County committee that hyperscale data centers typically use closed-loop cooling that limits on-site withdrawals but place large demands on grid power; siting depends on land, power infrastructure and municipal utility capacity.

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When the committee asked about new data centers, Adam (S4) said the facilities look for four ingredients: land, power, water and fiber. He emphasized that while many hyperscale sites now use closed-loop liquid cooling that reduces routine on-site water use, energy demand is the larger system-level concern.

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