Which Ministry of Power orders created and changed the inter-state transmission system charge waiver, and on what dates?

The Ministry of Power's waiver of inter-state transmission system (ISTS) charges began with an order of 30 September 2016 and has been amended many times. The main reset is the 23 November 2021 order, which set 30 June 2025 and a four step taper; storage, hydro, offshore wind and hydrogen orders followed to 10 June 2025.

2016 to 2021: the first waiver and its extensions

• 30.09.2016: the original Ministry of Power order on waiver of inter-State transmission charges on solar and wind power, issued under paragraph 6.4(6) of the Tariff Policy, 2016. The 23 November 2021 order lists later amendments dated 14.06.2017, 13.02.2018, 06.11.2019, 05.08.2020, 15.01.2021 and 21.06.2021.
• 06.11.2019: extended the waiver date from 31 March 2022 to 31 December 2022, as the 2020 order recounts.
• 05.08.2020: charges and losses waived for 25 years for solar and wind plants commissioned till 30 June 2023.
• 15.01.2021: supersedes the 13.02.2018, 06.11.2019 and 05.08.2020 orders; waives charges for 25 years for plants commissioned up to 30 June 2023 selling to distribution licensees under competitive procurement; adds the extension clause for force majeure, transmission delay or government delay. The subject line still says charges and losses.

23 November 2021: the reset

• Replaced the earlier orders for solar, wind, hydro pumped storage and battery projects commissioned up to 30.06.2025, then a taper for those commissioned after: 25% for 01.07.2025 to 30.06.2026, 50% to 30.06.2027, 75% to 30.06.2028, 100% from 01.07.2028.
• Waiver period 25 years for solar, wind and hydro pumped storage, 12 years for battery storage. Charges only, not losses, except for bids completed up to 15.01.2021.
• 26.11.2021 and 30.11.2021: addenda. The 30 November order supersedes the 26 November one and adds the extension clause for a scheduled date of 30th June 2025.

2022 to 2025: more technologies

• 01.12.2022: hydro power projects, by construction award and power purchase agreement date, for 18 years.
• 06.12.2022: intra-State lines used for inter-State conveyance are included, with reimbursement by the Central Transmission Utility.
• 29.05.2023: offshore wind, green hydrogen and green ammonia, pumped storage by construction award, and the 51% rule for drawee entities.
• 09.06.2023: extension of a scheduled date limited to six months at a time and not more than 2 times.
• 10.06.2025: pumped storage with construction awarded on or before 30 June 2028 and co-located battery storage commissioned on or before 30 June 2028, if its power is consumed outside the state, get 100%.

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Sources: Ministry of Power, orders on waiver of inter-state transmission charges, 2020 to 2025 (compiled PDF)

Last reviewed 2026-11-06. Dates and contents are from the orders as printed in the compiled PDF, read on 6 November 2026. The 21 June 2021 and the 14 June 2017 and 13 February 2018 orders are named in later orders but their text was not read, so no content is stated for them. A newer order may have changed a row; check the Ministry of Power's current list.