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Utah cavern to be used for energy storage

A Utah company plans to dig a series of underground caverns that it hopes to one day fill with compressed air, releasing it to generate electricity by turning a turbine and solving one of the most vexing problems facing the clean-energy industry — how to store power.

Under a barren patch of Utah desert, a private-equity group is bankrolling the project to hollow out a series of energy-storage vaults from a massive salt deposit a mile underground. It promises to make a perfect repository for storing energy and, in effect, creating a giant subterranean battery.

News-Leader.com