The Central Electricity Regulatory Commission (CERC) has amended the CERC (Sharing of Inter-State Transmission Charges and Losses) Regulations, 2020, waiving interstate transmission system (ISTS) charges for renewable energy generating stations and pumped hydroelectric stations beginning commercial operations by June 30, 2025. The ISTS waiver is among the various amendments contained in the CERC (Sharing of Inter-State Transmission Charges and Losses) (First Amendment) Regulations, 2023.