The Solar Energy Corporation of India (SECI) has awarded a 1,200 MW ISTS-connected wind-solar hybrid power projects (Tranche-IV) to NTPC Limited, Neyveli Lignite Corporation India Limited, Project Ten Renewable Power (Ayana Renewable Power), and Azure Power on a build, own and operate basis across India. NTPC and Ayana Power were awarded a capacity of 450 MW at a quoted tariff of Rs 2.34 per kWh, while NLC India was awarded a capacity of 150 MW at a quoted tariff of Rs. 2.34 per kWh. Meanwhile, Azure Powerwas awarded a capacity of 150 MW out of 300 MW under the bucket filling method at a quoted tariff of Rs 2.35 perkWh. The discovered tariff of Rs 2.34 per kWh was 3 per cent lower than the lowest bid of Rs 2.4 perkWh, discovered in the wind-solar hybrid the auction held in December 2020.
In July 2021, Tata Power and Azure Power were named winners in the MSEDCL auction to procure power from grid-connected inter-state and intra-state wind-solar hybrid projects,totaling 500 MW. Tata Power was awarded a capacity of 300 MW and Azure was awarded a capacity of 200 MW with both companies bidding Rs 2.62 per kWh. Bidders responded well to the tender, which was oversubscribed by 1 GW.In April 2021, NTPC Limited invited bids to select solar developers for setting up 1,000 MW ISTS-connected solar power projects across India.