Industrial heat startup Rondo to open world’s largest battery factory

Rondo Energy’s unconventional energy storage tech will soon be manufactured in a bigger factory than that of any conventional battery maker. The Bay Area startup already can produce 2.4 gigawatt-hours of its ​“heat batteries” per year at a facility in Thailand owned by Siam Cement Group. That factory will now expand over the next few years to produce 90 gigawatt-hours of the batteries per year..

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