The four components of an electricity bill and the factors that influence them are as follows: Power procurement costs: The cost to generate power is driven by the overall mix of generation, the cost of fuel for each generation source, the efficiency of these generators, and the capital and operational costs of each generator.

If the Railways were to consider the 5 GW target, one of the first steps for its successful implementation, is to develop an understanding of the policy and regulatory scenario across various states, so as to understand the opportunities and challenges for solar developers to set up projects.