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Old coal mines could be answer to clean energy's limitations
Published Sun, May 28, 2017 · 09:50 PM
Washington
BEN Chafin sees the future of clean energy in abandoned coal shafts.
The Virginia state senator, whose Appalachian district is pockmarked with empty mines, pushed through legislation in April that encourages companies to transform those tunnels into giant storage devices to hold vast amounts of renewable power.
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