Indian Railways’ first DEMU train with solar-powered coaches to promote cleaner fuels 5 Photos . Updated: 20 Jul 2017, 02:39 PM IST Livemint The lighting, fans and information displays inside the train, once powered by diesel, will run off the sun's energy after the panels were fitted to the carriage. In images 1/5A solar-powered DEMU (diesel electric multiple unit) train at Safdarjung railway station in New Delhi. PTI 2/5The entire electrical need of the coaches—lights, fans and information display system—will be met by energy produced by solar panels fitted on the roof of coaches of DEMU trains. PTI 3/5The solar system and panels have been developed and fitted by the Indian Railways Organisation of Alternative Fuel (IROAF). Chandan Khanna/AFP 4/5The battery panel of one of the solar-powered, environment-friendly DEMU trains. PTI 5/5A solar-powered DEMU train with six trailer coaches will save about 21,000 litres of diesel, saving Rs12 lakh every year, said the Indian Railways. Chandan Khanna/AFP