In the last years, the shift in the area of thermal biomass and waste gasification can be observed. Times when only clean woody biomass was used are nearly gone. The price of this feedstock is increasing each year, thus also the waste wood, or other waste materials (e.g. sludge), are more and more in focus of scientists as well as of producers and operators of thermal biomass gasification facilities.

     Other parameter, which changed with the time is the purpose of utilization of product gas. In small scale gasification, still dominates the heat or combined heat and power (CHP) production, whereas in large scale, the production of gaseous or liquid biofuels or cofiring is more and more relevant.

     In line with Paris Agreement objective to keep the global temperature increase to well below 2°C and pursue efforts to keep it to 1.5°C, the 2030 climate and energy framework includes EU-wide targets and policy objectives for the period from 2021 to 2030 are as follows:
1.At least 40% cuts in greenhouse gas emissions (from 1990 levels)
2.At least 32% share for renewable energy
3.At least 32.5% improvement in energy efficiency

It is high time to use and further develop the energy technologies based on renewable sources to meet the climate and energy framework.