Delhi Metro Rail Corporation (DMRC), an electric-based rail network, apart from curbing vehicular pollution in Delhi by keeping more than 4 lakh vehicles off the road every day, also started cutting its own carbon footprints by increasing its dependence on renewable sources like solar power and power from Waste to Energy plants since 2014. Recently, DMRC announced that it will become 100 per cent environment-friendly rail network by 2021.