"It is unfortunate that when India has launched such a big renewable programme, very small portion of it is in a way reserved for India's small entrepreneurs.
"We will definitely flag this issue because this shows that the way we are going green. The developed world should not have objections on such a small thing," Environment Minister Prakash Javadekar said.
During a recent meeting of BASIC countries - Brazil, South Africa, India and China - held in New Delhi, China had come out in support of India's decision to file an appeal against the WTO ruling.
Ruling against India, the World Trade Organization (WTO) had recently said the government's power purchase agreements with solar firms were "inconsistent" with international norms -- a matter in which the US had filed a complaint before the global trade body alleging discrimination against American firms.
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The US had dragged India to WTO on this issue in 2014, alleging the clause relating to Domestic Content Requirement (DCR) in the country's solar power mission were discriminatory in nature and "nullified" the benefits accruing to American solar power developers.
The ruling was a blow to India which has announced a target of 175 GW of renewable energy by 2022, of which 100 GW will be realised through the National Solar Mission.
Supporting India's decision to challenge the WTO ruling, Greenpeace also had earlier said the ruling "violates" the spirit of the Paris Climate Change Agreement.