According to paper dated 15,Oct`15, "Indian Railways have been procuring power through the State Utilities at an average rate of Rs 6.75 per unit. Adani Power Ltd have been awarded the contract at a landed tariff of Rs 3.69 per kWH (unit) for a period of three years,"
The annual peak consumption is 4000 MW which costs Rs 12,000 crore.
The range of per unit is Rs 4 to Rs 9. Power suppliers prefer to sell electricity to Railways as it pays higher per unit charges compared with households. Also, it buys more...
more... power at night, when demand is typically lower. Railways’ average cost of power purchase has shot up from Rs 4.4 per unit in 2009-10 to Rs 6.45 a unit 2013-14. The Railways’ locomotives also consume 2.6 billion litres of diesel annually. Its fuel bill — electricity traction cost apart from diesel — accounted for Rs 28,592 crore, or 22%, of its total working expenses in 2013-14. Diesel accounted for around 70% of the fuel bill.