NEW DELHI: The government has approved 17 solar parks and plans to auction 15,877 MW of solar generating capacity this year."We are also considering dollar tariffs in some cases to encourage foreign investment," power minister Piyush Goyal said on Wednesday at a press conference on the completion of one year of the National Democratic Alliance government.The minister said a self-hedging mechanism was being worked out to ensure that dollar tariffs do not cause any distress to distribution companies that purchase solar power. The government aims to set up 25 solar parks of about 100 MW each along with a Rs 38,000 crore green energy corridor to transmit renewable power.The government also plans to create job opportunities for about 50,000 unemployed educated youth by engaging them as solar entrepreneurs to set up 20,000 MW of capacity.The NDA government has set a target of increasing renewable energy capacity five-fold to 175,000 MW by 2022.