Pendency of Litigation(s)/dispute(s) or the outcome impacting the Company

August 26, 2026 BSE Limited National Stock Exchange of India Limited Corporate Relationship Department Exchange Plaza, C-1, Block G, Phiroze Jeejeebhoy Towers Bandra-Kurla Complex, Dalal Street Bandra (East) Mumbai – 400 001. Mumbai – 400 051. Scrip Code: 500400 Symbol: TATAPOWER Dear Sir/Madam, Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 In continuation of our (a) announcement dated July 2, 2025 concerning the arbitration between the Company and Kleros Capital Partners Limited (‘Kleros’), and (b) announcement in the Notes to the Company’s consolidated financial results for Q2FY26 dated November 11, 2025, we wish to inform you of further developments on this litigation/dispute. This disclosure is in compliance with Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended, read with SEBI Master Circular HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026. The details are provided below: Sr. Particulars Details a) The details of any change in the status and / or The Singapore International Commercial Court has any development in relation to such proceedings issued its judgment on August 26, 2026, which arose out of challenge filed by the Company to the arbitral awards dated July 1, 2025 and August 27, 2025 in the arbitration proceedings which were initiated by Kleros against the Company on November 30, 2020. The Company had also challenged Singapore International Arbitration Centre (SIAC) Court’s decision dated June 5, 2025 rejecting the Company’s challenge to the appointment of two arbitrators who issued the majority arbitral award. The Singapore International Commercial Court has dismissed the Company’s challenge holding that there was no breach of natural justice or the fair hearing rule by the majority in arriving at the final award. The Company has 28 days from August 26, 2026 to appeal the decision of the Singapore International Commercial Court to the Singapore Court of Appeal. The Company will be filing an appeal against the decision of the Singapore International Commercial Court within this time period. b) In the case of litigation against key management Not Applicable. personnel or its promoter or ultimate person in control, regularly provide details of any change in the status and / or any development in relation to such proceedings c) In the event of settlement of the proceedings, Not Applicable. details of such settlement including - terms of the settlement, compensation/penalty paid (if any) and impact of such settlement on the financial position of the listed entity. This is for your information and records. Yours Sincerely, For The Tata Power Company Limited Vispi S. Patel Company Secretary FCS 7021