Stelios Zerefos is an architect (B.A.(hons), M.Arch.II, Ph.D.) and professor of the School of Applied Arts and Sustainable Design of the Hellenic Open University since 2009. He is the Director of the Master’s Programme “Lighting Design”, Director of the M.Sc. “Protection of cultural heritage and monuments of nature from the effects of climate change” and Director of the Lighting Design Laboratory. Apart from the Hellenic Open University he was invited to teach in graduate and post-graduate courses at several European Universities. He is a member of national and international scientific organizations, an IALD educator member, as well as editor and reviewer in international scientific journals such as Sustainability, Energies, Energy and Buildings and Solar Energy. He has scientific papers in peer-reviewed journals and conference proceedings and is also the author of four books in architecture, lighting design and building simulation. He is the scientific coordinator of several research and educational projects in the Hellenic Open University and  has also coordinated three finished research projects and participated in another 12 as a research member. He has actively participated in the creation of six postgraduate programmes, one undergraduate programme and two short VET programmes at HOU. He has administrative experience as a member of the HOU’s Board of Directors, Dean of the School of Applied Arts and Sustainable Design, as well as member in administrative committees.