Keywords: Acting Secretary Daniel Poneman, U.S. Department of Energy, control center ESIF.jpg en April 19 2013- L-R NREL Director Dan Arvizu and Acting Secretary Daniel Poneman U S Department of Energy and ESIF Manager Carolyn Elam visit the ESIF control center during a tour of the Energy Systems Integration Facility ESIF at the National Renewable Energy Laboratory NREL in Golden Colorado Photo by Dennis Schroeder / NREL 2013-04-19 13 05 22 http //www flickr com/photos/departmentofenergy/8683505494/sizes/o/in/photostream/ ENERGY GOV ENERGY GOV http //flickr com/photos/37916456 N02/8683505494 2013-04-27 02 50 22 United States Government Work PD-USGov Uploaded with UploadWizard Daniel Poneman Energy Systems Integration Facility |