Costis Stambolis is the Executive Director of IENE. He has a background in Physics and Architecture having studied at the University of London, the North East London Polytechnic (NELP) and the Architectural Association in London from where he holds a Graduate Diploma in Architecture and Energy Studies (AA Dip. Grad). He also holds a professional practice license from the Technical Chamber of Greece (TEE), and a Master’s Degree from the Said Business School, University of Oxford, where he studied “Strategy and Innovation”.

Costis has carried out numerous studies and projects on Renewable Energy Sources in developing countries. He has consulted widely on solar building applications for both private and institutional clients in various European countries. He has worked as a consultant and strategy advisor on natural gas, oil markets and energy security issues for large multinational companies, international organizations and governments.

Costis has lectured widely on energy issues and has organized several national, regional and international conferences, seminars and workshops. He has published several books, conference proceedings, research papers and studies on energy policy, solar energy, RES and energy markets. He is the editor of the “S.E. Europe Energy Outlook (2011,2017, 2022)”, which is considered a basic reference on energy for SE Europe. The next edition of the “Outlook” is scheduled for publication in September 2025.

Since 2001 Costis supervises and edits daily Greece’s foremost energy site www.energia.gr. He is a founding member of the Institute of Energy for South East Europe (IENE), which he currently chairs. He is a member of the Energy Institute (UK), the International Passive House Association (IPHA), The Technical Chamber of Greece (TEE). Since 2018 he also serves as a full member of the Greek government’s standing committee on Energy and Climate Change (NECP).