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Why Salt Is This Power Plant's Most Valuable Asset

Molly A. Seltzer

August 04, 2017 |

Smithsonian |

Text |

800-1500 Words

Response Location: United States, McIntosh, Alabama

One of the greatest challenges to integrating renewable energy sources into the power grid has been the issue of storage - where and how to keep power generated during off-hours (such as overnight) when demand is low. While batteries are on the rise as one solution, an Alabama power plant has discovered a natural way of storing energy until it is needed: pumping air into salt caverns.

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