Dr. David S. Ginley is currently Research Fellow at the National Renewable Energy Laboratory. He received a PhD in Inorganic Chemistry from MIT and BS in Chemistry from the Colorado School of Mines. He has been involved in leadership of national and international projects. Current work focuses on advancing solar, hydrogen and geothermal energy conversion and energy storage founded on developing a detailed experimental understanding of the detailed defect and phase behavior of the materials. He has over 400 publications and 40 patents.