This work evaluates the performance of renewable and conventional energy power corporations of India using DEA. The analysis has been carried out based on both self and peer evaluation DEA models. Self-evaluation model reveals that only 7 out of 17 DMUs are CCR efficient. It has also been observed that amongst these fully efficient DMUs, 60\% are government funded electric utilities. Performance of several private corporations is sub-optimal, suggesting the potential for operation and maintenance cost reductions. In order to study the performance of renewable energy power plants, appropriate parameters have been chosen from the data set and results reveal that 75\% of the renewable energy generation plants have efficiency score greater than 0.75. Peer evaluation of the DMUs provides the basis for ranking based on the cross efficiency score. Aggressive and Benevolent models are used to study the performance of the DMUs under non-cooperative and cooperative conditions. Then the electric utilities that generate renewable energy are found to either maintain or improve their ranking under aggressive conditions. © 2018 IEEE.