Stamatis Kalligeros is Professor in Hellenic Naval Academy. He holds a Diploma of Mechanical Engineer from National Technical University of Athens, MSc in Industrial Management with specialization in Energy Management and Environmental Protection from University of Piraeus and PhD in Engineering from National Technical University of Athens. Prof. Kalligeros has 30 years of experience in the field of standardization and quality assurance in the energy sector. He is National representative in various CEN Technical Committees and Assessor and Lead Assessor for Greek and German Accreditation Bodies. He is Evaluator and Assessor of the European Commission DG Energy and DG Move. He is the director of the Fuels & Lubricants Laboratory of the Hellenic Naval Academy and National representative in this field. He was head of the responsible team for the construction of a biofuel plant in Greece. Additionally he was evaluator in the conformity assessment for the industry in the area of western Attica.