1. National Renewable Energy Laboratory Gets DOE Award to Develop Grid Electricity Storage System

    National Renewable Energy Laboratory Gets DOE Award to Develop Grid Electricity Storage System

    The Department of Energy’s (DOE) Advanced Research Projects Agency-Energy (ARPA-E) recently awarded DOE’s National Renewable Energy Laboratory (NREL) $2.8 million to develop a grid electricity storage and power generation system. The system includes a charging device, thermal energy storage modules, a heat exchanger, and a closed-loop Brayton cycle turbine. “When electric power is cheapest, electric heaters will ‘charge’ the storage modules by heating stable, inexpensive solid particles to more than 1,100 degrees Celsius,” NREL Principal Investigator Zhiwen Ma said. “And when it’s time to discharge this energy, the hot particles will move through a heat exchanger to heat a working fluid that drives a high-efficiency closed-Brayton combined cycle attached to an electric generator.”

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