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GOLDEN, CO - SEPTEMBER 11: US DOE Energy Secretary Ernest Moniz, right, with Patrick Moriarty, of NREL, left, visits the Insight Visualization Lab at ESIF where they are looking at a virtual environment simulating a wind tunnel at National Renewable Energy Laboratory (NREL) in Golden, CO. on September 11, 2013. The Energy Systems Integration Facility or ESIF is the nations first major research facility focused on clean energy grid integration and wide-scale deployment. It will help manufacturers, utilities and public and private sector researchers overcome the challenges of integrating clean energy and energy efficiency technologies into today's energy infrastructure. (Photo By Helen H. Richardson/ The Denver Post)