Dr. Christos Roumpos is a Mining Engineer with an MSc in Energy and Environmental Management and a PhD in mining engineering. Since 1991, he has worked for the Public Power Corporation of Greece in various engineering, environmental, and energy economics fields, as well as numerous research projects. For about 25 years, he has taught mining engineering, mineral economics, energy, and project management courses at Universities. He is the author or co-author of more than 170 papers in scientific journals and international conferences.