Department of Energy promotes pumped hydro as option for renewable power storage

Greenwire: When the wind howls in Denmark and energy demand is low, turbine farms can store energy in a Norwegian reservoir for use the next day. But a hard wind in the dead of a Texas night has power companies paying customers to use electricity they don't need. That is a waste of clean power -- something that U.S. promoters of renewable energy want to change. Among the American boosters of pumped hydro storage is Energy Secretary Steven Chu, who maintains that water-based storage could ......

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