Deputy Secretary Daniel Poneman, U.S. Department of Energy

April 19, 2013- L-R, NREL Director Dan Arvizu, Carol Battershell, Manager, DOE Golden Service Operations Center and Deputy Secretary Daniel Poneman, U.S. Department of Energy, tour the new Energy Systems Integration Facility (ESIF) at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. (Photo by Dennis Schroeder / NREL)