German energy company EWE plans to convert two salt caverns, currently used to store gas, into a battery. The battery will be the largest electrochemical storage device of its kind and the first to use a salt cavern.
The caverns to be converted are part of an eight-cavern cluster at Jemgum in northwestern Germany. If successful, the project – known as brine4power – will be able to store 700 MWh of electricity, equivalent to one hour of Berlin’s energy consumption.
It will use ‘redox flow’ battery technology,...
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