The Minister, who will present budget in the Lok Sabha on February 28, said that the India is better placed to provide investment opportunity to the global and domestic investors.
"The starting point of all this has to be the credibility of the Indian economy, the faith of people in the Indian economy and our ability to provide opportunities to investors.
"From that point of view, our own systems have to tune a lot and for each one of these, power is essential," he said while addressing renewable energy conference 'Re-Invest 2015'.
"In reverse bidding, the cost of power is going to be linked with the rate at which you get the fuel," Jaitley said.
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He said a state subsidy is not sustainable.
"One way by which people want to provide cheaper electricity is by the state subsidising it. A state subsidy really means that you will have to tax people more in order to provide something free to some other people. Is that a sustainable cause," he said.
Slashing power tariff by half was among the key pre-poll promises made by AAP in the Assembly elections which they won with a landslide majority.
Aggressive bidding is going on for the first tranche of the coal mines auction which is expected to completed by February 22.