It also said cancellation of blocks has impacted capacity in private IPP segment to the tune of 18 GW.
"Bidding by power generating companies in the auction has been quite aggressive ...As a result, winning bidders remain exposed to a significant under-recovery in fuel cost ... Aggregate under-recovery for the bidders is estimated at Rs 8 billion in FY 2015-16, which is likely to increase to about Rs 18 billion by FY 2017-18," it said in a report.
ICRA said of the 33 blocks, 12 were earmarked for the power sector and the government has announced successful bidders for nine mines which have a geological reserves of 1200 million tonnes of which extractable reserves are 60 per cent.
These blocks are "estimated to provide a fuel security for about 6 GW of generation capacity in the power sector, in ICRA's view. ICRA notes that the bidding by power generating companies in the auction has been quite aggressive with the bidding happening on a forward basis on the reserve price payable as bid quoted is zero in reverse bidding," it said.
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It said as a result the winning bidders will remain exposed to significant under-recovery in fuel cost which is estimated to range from Rs 0.39/kwh to Rs 1.02/kwh on a levelised basis over a 25-year period."
"ICRA estimates that the SC ruling cancelling allotment of coal blocks had impacted capacity in private IPP segment to the tune of 18 GW and the current coal auctions have secured fuel for 2.5 GW out of those 18 GW," it said.
Thus, capacity of about 15.5 GW (with cumulative project cost at around Rs 930 billion) continues to remain affected and within the same, about 8 GW is at risk also due to absence of tapering coal linkage.