ECN is the leading institute for energy research in the Netherlands and in Europe. Its mission is to develop high-level knowledge and technology for a sustainable energy system and to transfer it to the market. ECN Biomass, Energy Efficiency (BEE) research is dedicated to R&D on the thermal conversion of biomass, waste, and coal into power, heat and gaseous & liquid fuels. Furthermore, the department houses experts on process simulation, catalysis, and materials. For ~20 years, ECN has addressed various aspects of the thermal conversion (combustion, gasification and pyrolysis) of biomass, coal and waste in a broad range of national and international projects. A large number of experimental facilities is in use for tests.