Frits Bliek explains the Ocean Grazer ocean battery, an underwater renewable energy storage system being exhibited at CES in Las Vegas, Nevada. — AFP
A wind turbine sitting idle on a calm day or spinning swiftly when power demand is already met poses a problem for renewables, and is one researchers think can be tackled under the sea.
In one vision, offshore wind farms could use seawater to essentially store energy until it's needed, helping wean humanity off fossil fuels.
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