Battery startup Form Energy said on Wednesday that it has raised $750 million to expand its manufacturing capacity in West Virginia, the latest sign that the AI data center building boom is fueling investment in energy storage. The U.S. installed 9.7 gigawatt-hours of energy storage in the first three months of this year, up 32% from 2025. Most of those batteries can discharge for a few hours at most, but Form Energy’s iron-air batteries can deliver power for up to 100 hours. Long-duration ener…
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