The Central Electricity Regulatory Commission has allowed NTPC to adopt a tariff within the range of ₹2.60 (~$0.031) – ₹2.65 ($0.0316) for 1,500 MW solar projects connected to the inter-state transmission system. The Commission said trading margins will be determined per the power sale agreement between NTPC and distribution licensees. On July 25, 2023, NTPC issued a request for selection to establish 1,500 MW ISTS-connected solar power projects under tariff-based competitive bidding. NTPC received six bids for an aggregate capacity of 2250 MW. As per the eligibility criteria, five bidders were shortlisted for the e-reverse auction.