Capacity addition

November 11, 2026 BSE Limited National Stock Exchange of India Limited Corporate Relationship Department Exchange Plaza, 5th Floor, 1st Floor, New Trading Ring, Plot No. C/1, G Block, Rotunda Bldg., P. J. Towers, Bandra-Kurla Complex, Dalal Street, Fort, 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 This is to inform you that the Company's Board of Directors, at its meeting held today, has approved an investment in the 1,800 MW Pumped Storage Project at Shirwata, Maharashtra. The details required under SEBI Master Circular HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 (‘SEBI Circular’) are set out below: Sr No Particulars Description 1 Existing capacity The Company's overall existing capacity stands at 16.9 GW. 2 Existing capacity Optimum level utilization 3 Proposed capacity addition 1800 MW PSP at Shirwata 4 Period within which the 51 Months proposed capacity is to be added 5 Investment required ₹11,871 crore 6 Mode of financing Debt is 75% and Equity is 25% 7 Rationale Pumped Storage Hydro Project (PSP) will be instrumental in Renewable Energy Round the Clock (RE-RTC) applications, facilitating energy shifting, and contributing to the decarbonize hard to abate industries. The above information is also made available on the Company’s website at www.tatapower.com. This is for your information and records. Yours Sincerely, For The Tata Power Company Limited Vispi S. Patel Company Secretary FCS 7021