Dr. Panagiotis Grammelis is Director of Research at the Chemical Process and Energy Resources Institute of CERTH (CERTH/CPERI). The scope of his research is the exploitation of solid fuels, i.e. biomass/waste and coal, with emphasis on the thermochemical conversion technologies. He is experienced in numerous EU and national funded and industry oriented projects, with an extensive knowledge of the South-East European market. Since May 2011, Dr Grammelis is Head of the Laboratory of Alternative Fuels & Technologies and guides a team of highly-skilled researchers. He has been Steering Committee member of the Biomass Panel in the RHC-ETP (responsible for industrial boilers and district heating), national expert for the standardisation of solid biofuels and member of DHC+ (District Heating & Cooling) Platform. Member of the Editorial Board in IJER and IJGW and the Scientific Committees of international conferences (EUBCE, GCGW, WSED). He is co-author in 380 papers in scientific journals, international conferences, workshops and books, with 2777 citations and h-Index 30 according to Scopus.