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That figure is stored heat for an industrial process, not electrical energy a home battery could export. The plant is not described as built, it is not a British project, and the announcement does not change home-solar paperwork. If you are buying storage for a house, you are looking at a different product, usually specified in kilowatt-hours." } }, { "@type": "Question", "name": "Is this solid-carbon thermal battery the same as a home solar battery?", "acceptedAnswer": { "@type": "Answer", "text": "No. Electricity would heat insulated solid-carbon blocks, and the store would supply process heat rather than an electrical export. A domestic solar battery holds electrical energy and supplies the home within its stated power rating. Antora has said its modules can provide heat or electricity, but this project is being developed around a heat offtake. 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