Government auditor CAG on Friday said private firms were likely to gain Rs 1.86 lakh crore from coal blocks that were allocated to them on nomination basis instead of competitive bidding, which will result in a loss to the national exchequer.

The CAG in its report, tabled in Parliament, names 25 companies including Essar Power, Hindalco, Tata Steel, Tata Power and Jindal Steel and Power which have got the blocks in various States.