Renewable energy is intermittent and as the infrastructure grows, energy storage systems must be available to fill gaps in the supply or to meet high peak demand. A novel way of storing electric power has been developed by Highview Power Storage. The company’s ‘CryoEnergy’ system runs during low-tariff periods and uses the cheap electricity to operate an air liquefaction plant, storing the liquefied air in an insulated tank at -196oC.

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