From what I understand, the Indian SECI is doing a good job in offering the solar and wind power procurement in the form of competitive auctions. Instead of relying on higher rate feed-in tariff mechanism by regulatory bodies, states in India could now rely on uniform tariffs established by the government throughout the country. However, like Arslan noted, this could mean significant losses to the power generating companies as all costs of production, installation and other formalities are already calculated based on the previous higher rates. Their should be a more structured, more regulated way to fix a tariff rate and I think these competitive auctions, if adopted by the state government would prove to be extremely beneficial. I think the state government should intervene and find middle ground so as to not leave the 500 MW energy capacity stranded due to non-compliance by these power generating companies.
Also, I think it's right to determine the tariff rates irrespective of a state's wind energy production capacity, since the states that do not have big wind energy producing capacity should not be penalized or pay heavier prices in their bids to use renewable sources of energy.