Biogas is generated through natural process of bacterial decomposition of biomass, manure, general waste, sewage, greenwaste and energy crops. Biogas is usually made up of approx. 50-70% methane, 25-45% carbon dioxide, 0-1% hydrogen, 0-10% water vapor, 0-2% oxygen etc. Biogas can be converted into energy in form of electricity, fuel, fermentation product utilized as fertilizer. Utilized in liquid or dry form as compost or soil improver in agricultural and horticultural sectors.The fermentation product contains N, P,K and organic carbon. Biogas generator helps for the production, generator contains a large tank for the storage of organic waste.for this four stage process involve; Hydrolysis, Acidogenesis, Acetogenesis and Methanogenesis. Benefits of biogas generator;Eco- friendly use of waste, lower green house gas emits, natural fertiliser produce etc.