This research collaboration between NREL and the MIT Joint Program will establish and contribute market and policy analysis with a strategic intent to transform global energy systems to a sustainable energy. NREL developed and currently maintains the Regional Energy Deployment System (ReEDS) Model; the MIT Joint Program developed and currently maintains the U.S. Regional Energy Policy (USREP) Model. The institutions jointly developed a linked version of the two models. Research under this agreement seeks to update and refine the linked model for the purpose of analyzing two electric power capacity expansion scenarios from the Department of Energy Wind Vision Study.