Four wind project developers- Ostro Energy (300 MW), Adani Renewables (250 MW), Srijan Energy Systems (150 MW), and Powerica Limited (50.60 MW), have quoted the lowest tariff of ₹2.82 (~$0.040)/kWh in the auction held by SECI for 1,200 MW of ISTS-connected wind projects issued under Tranche-VI.