Eos Energy Enterprises

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AI data centers push grid batteries past the 4-hour ceiling

As of September 2026: Supplying 10 MW / 100 MWh zinc system in West Virginia

Grid batteries came with a four-hour ceiling. Now the companies with the fastest-growing electricity demand on Earth, the AI data-center operators, are buying batteries that discharge for 10 hours and, in one case, 100: Meta reserved up to 100 gigawatt-hours from Noon Energy, while Google contracted a 300-megawatt iron-air system in Minnesota and a zinc array in West Virginia.

Updated Sep 18

Google backs West Virginia solar-plus-storage project pairing lithium and zinc batteries

New Capabilities

As of September 2026: Supplying the project's 10 MW/100 MWh zinc long-duration storage system

Google is buying the electricity from a $350 million solar-plus-storage project on a reclaimed West Virginia coal mine. Developer MN8 Energy will pair 86 megawatts of solar with lithium-ion batteries and the state's first commercial-scale zinc long-duration storage system.

Updated Sep 4