New Delhi: Buoyed by the success of the reverse auction in renewables, the ministry of new and renewable energy on Friday announced the auction of up to 21GW solar and wind capacities by March 2018.

The ministry will put on the block 3-4GW wind power capacities during the third and fourth rounds by March 2018. Each round will be of 1.5-2GW each, said power and new and renewable energy minister R. K. Singh during a media interaction here today.

The government has already auctioned 2GW wind capacities so for in first and second rounds this year. It has also decided to put for bidding 10GW wind capacities each in 2018 -19 and 2019-20 to meet the target of 60GW by 2022.

At present, wind power installed capacity is 32GW.

As far as solar auction is concerned, the government is looking at 17GW capacities by March. So far, 3.6GW solar capacities have been auctioned by the government.

To meet the milestone of 100GW of solar capacity by 2022, the Centre will go in for auction of 30GW solar capacities each in 2018-19 and 2019-20.

Singh added: "(We) will think about imposing customs duty on solar equipment once we develop our domestic manufacturing capacity."

The Solar Energy Corporation of India (SECI) will be the nodal agency for most of the auctions. Wind power tariff had dropped sharply to an all-time low of Rs 2.64 per unit during the second auction by the SECI for 1GW projects in October.

Solar power has seen a similar play where the tariff had dropped to a record low of Rs 2.44 per unit in a tariff-driven bidding earlier this year.

The power minister asserted that India will easily achieve 200GW renewable energy capacity by 2022 against the targeted 175 GW. The competitive wind and solar tariff is seen as a big boost for India's ambitious target of achieving 175GW of renewable energy by 2022.