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Jul 20, 2017, 6:04 am57 ptsGreentech Media
A German gas storage firm is planning a battery big enough to power a city the size of Berlin for an hour, using redox flow technology. The planned project, which Oldenburg-based EWE Gasspeicher is billing as the world’s largest battery, will involve filling two salt caverns, each of around 100,000 cubic…
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