Ambrosia Energy will build a 10 GWh factory in Texas to make batteries for off-grid data centers

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Sections of Ambrosia’s first pilot-scale power plant have been operating continuously for more than 100 days, Longmier said. The pilot is capable of generating 200 kilowatts of electricity 24/7.

To hit its cost targets, Ambrosia has been finding ways to simplify its components, including solar mounts and battery packs. By reducing part counts, and manufacturing many components in a factory, the startup has been able to reduce costs relative to buying from outside suppliers.

“We buy existing cells and we make our own pack in-house, and it has the fewest parts by a factor of about 100 compared to any other competitor we’ve seen,” Longmier said. “We’ve been able to get to about 1.3x the cost of the bare cell compared to about a 5- or 7x for most stationary storage systems.”