Professor Christos Vlachokostas is the Director of the Sustainability Engineering Laboratory (SEL) of the Energy Sector, Professor and Head of the Mechanical Engineering Department, (AUT), Greece. He has been involved in numerous (more than 60) EU research projects dealing with Sustainable management of Energy Resources, Circular Economy and Environmental Management. He is teaching/has teached Sustainability Enginnering, Waste Management and Circural Economy, Environmental Management, Management of Energy Resources, Heat Transfer. He was also a visiting Professor for the lecture “Energy Strategies and Climate Change” and “Sustainable Consumption and Production” at the International Hellenic University (MSc Environmental Management and Sustainability). He has supervised more that 100 Diploma and MSc Thesis and has co-authored more than 160 publication in peer reviewed journals, conference proceedings, books and media (h factor 31, more than 3400 citations). He was the Vice-Chairman of the Board of Directors of the Gas Distribution Company Thessaloniki-Thessalia S.A and a member of the Committee for the Evaluation of Inventions of the Industrial Property Organization. Among others, he was the Coordinator for the Restoration of Lake Koronia on behalf of the Greek Government, a member of the Green Fund Board of directors, a member of the Institute of Adult Continuing Education of the General Secretariat of Continuing Education, and the Vice President of the General Assembly of the Technical Chamber of Greece.