The idea of storing energy by compressing air in underground mines may sound like science fiction, but its already being done in Alabama and within a few years residents in Ohio will have their own compressed air plant.The worlds first compressed air energy storage plant was in Germany, says Lee Davis, plant manager for the Compressed Air Energy Storage CAES Power Plant in McIntosh, Alabama. The Alabama CAES plant was the first in the United States when it opened in 1991.

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