The Energy Department’s National Renewable Energy Laboratory (NREL) will play key roles in a variety of projects recently funded by the Department’s Advanced Research Projects Agency-Energy (ARPA-E). NREL’s approaches have received five awards across three different ARPA-E programs for advancing transformational technologies to generate, store, and use energy more efficiently, at lower costs and with reduced emissions.   ARPA-E announced its OPEN 2015 program awards under a highly competitive,...