Assertion: practical electrolysis | /r/CapableOf | consume 50 kilowatt-hours per kilogram
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text: Practical electrolysis (using a rotating electrolyser at 15 bar pressure) may consume 50 kilowatt-hours per kilogram (180 MJ/kg), and a further 15 kilowatt-hours (54 MJ) if the hydrogen is compressed for use in hydrogen cars.