New Delhi, Dec 23 (ANI): Railways Minister Suresh Prabhu on Tuesday said the Railways, being one of the largest consumers of energy, has decided to diversify its energy portfolio and align with the Central Government's policy of using green energy.While inaugurating a 30 kilowatt solar power plant at the Rail Bhawan in New Delhi, Suresh Prabhu said that the government was considering harnessing energy from domestic sources.