Significance of Cogeneration: It decreases energy costs and green house gas emissions usually by upto two-third. In addition to decreasing in cost, cogeneration too rises resource utilization. It provides major economic and environmental facilities since it turns or else wasted heat into a helpful energy source. Cogeneration is a reliable and proven technology presently operating at over 100 sites across many country. There is important potential for cogeneration plants fired by another fuels, comprising biomass (example, plant waste from sugar or cotton harvesting), or biogas (example, methane generated by sewage works or piggeries).