"Despite aggressive bidding, debt viability of projects with low execution and counter-party risks (especially those under the Jawaharlal Nehru National Solar Mission scheme and Solar Park scheme), is likely to remain intact," said Ind-Ra in a press release.
Solar tariff hit record low of Rs 4.34 per unit in an auction for a 70-mw solar plant under NTPC's Bhadla Solar Park tender last month.
However, creditors will have to avoid the pitfalls of thermal power where aggressive assumptions and leverage build up at the holding company level to fund equity contributions in underlying special purpose vehicles resulted in significant stress, it said.
Ind-Ra expects the developers will favor projects under the Jawaharlal Nehru National Solar Mission scheme state projects on account of healthy credit profiles of the off-taker i.E. NTPC Ltd ('IND AAA'/ Stable/'IND A1+') compared to weak credit profile of the state distribution companies.
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"We expect the projects floated under the viability gap funding (VGF) scheme will attract larger participation provided the tariffs remain above Rs 5 per unit. Ind-Ra believes that with the increase in competition, a scenario of developers paying premiums instead of availing VGF funding (similar to the road project tenders back in 2012) cannot be ruled out," it said.
Despite this, Ind-Ra believes that the credit profile of the projects will remain comfortable with an average debt service coverage ratio of 1.3x.
The capital cost could fall in the medium term and as a result lower bids to, or below, INR4/kWh by FY17. Ind-Ra expects capacity additions to remain robust with 12.5 GW to be added by FY18, taking the cumulative capacity to 17GW in FY18 from 4.9GW in December 2015.