Biomass gasification is thermo-chemical conversion of biomass into a combustible gas mixture (producer gas) through a partial combustion route with air supply restricted to less than that theoretically required for full combustion. Biomass gasification is basically conversion of solid Biomass (Wood, agriculture residues etc.) in to a combustible gas mixture normally called “Producer Gas”. Partial combustion is carried out in absence of air or less air than the stroichiometric requirement of air for complete combustion Partial combustion produces Carbon Monoxide (CO) as well as hydrogen (H2) which are both combustible gas. A gasifier system basically comprises of a reactor where the gas is generated, and is followed by a cooling and cleaning train which cools and cleans the gas. The clean combustible gas is available for power generation in diesel-gen-set or 100% producer gas engines.