Papastamatiou is Director of ENTEKA Group where he directs the development and financial sectors of the Group. Moreover, he is Chief Executive Officer of the Hellenic Wind Energy Association, ELETAEN. He has a vast experience in energy projects development in Greece and in Balkans with special focus and deep knowledge in wind energy. In the past he worked as advisor for the Hellenic Ministry of Development as well as for other public and private corporations. He holds Diploma in Electrical Engineering from NTU of Athens with PhD in Operational Research and Energy Policy & Planning and postgraduate lessons in Economics and Management in Athens University of Economics and Business. He is elected member of the Board of Directors of the Greek Association of RES Electricity Producers, GAREP.