Biogas used in the boilers is the most efficient and easiest way of using biogas for insitu requirements for energy in the industries to replace the biomass. KIS group can connect seamlessly from the anaerobic digestor/ biogas membrane to the boilers for heat requirements of the process. The specific burner is provided for biogas. The capital returns are within 2 years. The Boilers can also use low quality biogas for combustion whichout stripping the hydrogen sulphide thus reducing the capital cost as compared to all other applications. Biogas used in boiler directly for the energy requirements.