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Norton Audubon Hospital Saves Millions with Ice Batteries

10/8/2025

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Summary

Story summary

Norton Audubon Hospital in Louisville, Kentucky uses ice batteries to cool facilities, freezing 74,000 gallons of water nightly, reducing electricity use.
The system saved $278,000 in its first year and nearly $4 million since 2016.
Experts say ice batteries lower fire risk than lithium batteries and attract utility interest, including in California.

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Story summary

Norton Audubon Hospital in Louisville, Kentucky uses ice batteries to cool facilities, freezing 74,000 gallons of water nightly, reducing electricity use.
The system saved $278,000 in its first year and nearly $4 million since 2016.
Experts say ice batteries lower fire risk than lithium batteries and attract utility interest, including in California.