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flag Ice batteries cut U.S. cooling costs and grid stress by freezing water at night for daytime use, saving millions and reducing emissions.

flag Ice thermal energy storage systems, or "ice batteries," are being adopted in U.S. buildings to reduce cooling costs and grid strain. flag At Norton Audubon Hospital in Louisville, a 74,000-gallon system saved nearly $4 million since 2016 by freezing water at night and using it for daytime cooling. flag The technology, used in hospitals, schools, and data centers, helps shift energy use to off-peak hours, lowers emissions, and offers a safer alternative to lithium-ion batteries. flag California leads adoption due to climate and energy policies, and growing demand from AI-driven data centers is accelerating deployment.

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