Highview Power Storage’s system uses liquid air as the storage medium and can be scaled to 100MWs/GWhs of storage, similar to medium scale pumped hydro. But liquid air can easily be stored in the same low pressure tanks as used by the LNG industry – it is hundreds of times more energy dense than water (therefore taking up far less space) – and the process does not need large mountains or lakes, like some pumped storage systems.

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