Renewable energy technologies for water pumping : An estimation of unit cost of CO2 emissions mitigation

An attempt has been made to estimate unit cost of CO₂ emissions mitigation pertaining to four renewable energy technologies for water pumping in India. The annualized costs and benefits associated with each of the technologies have been estimated and the same have been used to estimate the unit cost of CO₂ emissions mitigation of these technologies. Results of some sample calculations made on the basis of available data for different commercially available sizes and designs in India have been presented. Break-even analysis for each of the renewable energy technologies to be a no regret option for CO₂ emissions mitigation have also been undertaken. Unit cost of CO₂ emissions is found to be the lowest for the biogas based dual fuel engine pump followed by the windmill pump.