Energy storage

DEFINITION: The capture of energy produced at one time to be used at a later date. Energy storage can help deal with fluctuations in demand and generation by allowing excess electricity to be saved for periods of higher electricity demand. A variety of technologies exist to store electricity, including batteries and hydrogen.

See also: Decentralised energy

See also: Distributed generation

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An artist's impression of what Scottish Power's 'super battery' at its Whitelee wind farm will look like once complete. Image: Scottish Power 

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Northumbrian Water has been powering its operations with 100% renewable electricity since May

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The battery storage system at the Emirates. Photo credit: Pivot Power

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