The Central Public Works Department (CPWD), which is under the Union Urban Development Ministry, is banking on solar energy to make buildings energy-efficient and save on electricity bills.“The CPWD will generate 42.5 MW of solar energy across the country, besides replacing energy-inefficient electrical fittings in 20 government buildings in Delhi by September 2016 and in the rest of the country later. These initiatives are estimated to result in a saving of Rs 115 crore per year,” read a statement issued by the Ministry.Earlier, the CPWD had signed an MoU with Solar Energy Corporation of India (SECI) for the installation of grid connected rooftop Solar Photo Voltaic panels in all government buildings maintained by the CPWD across the country. Consequently, the SECI assigned 14 bidders to undertake projects in 16 states. As per the plan, in Phase-I, 10 MW will be generated by May covering Delhi (3 MW), UP (2 MW), North-East and UTs (2 MW) and 1 MW each in Andhra Pradesh, Karnataka and Maharashtra.Urban Development Secretary Madhusudhan Prasad has also directed the CPWD and the SECI to ensure net metering in all 200 buildings in the country and ensure proper monitoring of net energy consumption by government buildings. The CPWD has also started replacing energy-inefficient fittings with LED bulbs and 5-star air conditioning systems approved by the Bureau of Energy Efficiency, which will be completed in 20 buildings in Delhi by September, the statement read.