These solar-powered batteries can power data centres even after the sun has set

· Ver (01:32)
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By 2030, data centres in the US could use 9% of the country’s total electricity supply. This system, designed and built by US start-up Exowatt, could be part of the solution. Modular and scalable, each unit contains a stack of heat battery cells with rectangular lenses mounted above them, tracking the sun and delivering renewable energy up to 24 hours a day.