Press Release

October 8, 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, Sub.: Press Release Please find enclosed the press release titled “TP Solar, Manufacturing Arm of Tata Power Renewables, Records 1 GW Module and 0.9 GW Cell Production in Q2 FY27 Achieves 2 GW Module and 1.8 GW Cell Output in the H1 FY27”. This is for your reference and records and is not a disclosure in terms of the requirements of Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. Yours Sincerely, For The Tata Power Company Limited Vispi S. Patel Company Secretary FCS 7021 Encl: As above TP Solar, Manufacturing Arm of Tata Power Renewables, Records 1 GW Module and 0.9 GW Cell Production in Q2 FY27 Achieves 2 GW Module and 1.8 GW Cell Output in the H1 FY27 TP Solar Records Strong Manufacturing Momentum with 1 GW Module and 0.9 GW Cell Production in Q2 FY27 The modules are Domestic Content Requirement (DCR) - compliant and listed under the Government of India’s Approved List of Models and Manufacturers (ALMM) National, October 8, 2026: TP Solar Limited (TP Solar), the solar manufacturing arm of The Tata Power Company Limited (Tata Power) and a wholly owned subsidiary of Tata Power Renewable Energy Limited (TPREL), achieved a strong manufacturing performance in Q2 FY27 (July - September 2026), producing 1 GW of solar modules and 0.9 GW of solar cells. In H1FY26, i.e. from April to September 2026, TP Solar manufactured 2 GW of Modules and 1.8 GW of Cells. This production performance underscores TP Solar’s consistent capacity ramp-up and improving operational efficiency. The modules are compliant with Domestic Content Requirement (DCR) norms and approved under the Approved List of Models and Manufacturers (ALMM). TP Solar operates one of India’s largest single-location state of the art, 4.3 GW Solar Cell and Module manufacturing facility in Tirunelveli, Tamil Nadu. The facility is also distinguished by a workforce comprising nearly 80% women, reflecting the Company’s strong commitment to inclusive workforce. Tata Power, through its subsidiary, TPREL, has invested nearly ₹ 4,300 crore in establishing this facility. The investment represents a significant milestone in advancing indigenization across the solar value chain and reinforces the Tata Power’s strategic focus on achieving self- sufficiency in solar cell and module manufacturing. Equipped with advanced Tunnel Oxide Passivated Contact (TOPCon) and Monocrystalline Passivated Emitter and Rear Cell (Mono PERC) technologies, the plant produces ALMM - certified modules as also DCR modules using Made in India Cells in this plant. The plant also features cutting-edge AI/ML-driven systems and Automated Guided Vehicles (AGVs), and exemplifies next-generation manufacturing through intelligent automation and superior operational efficiency. The facility aligns with Tata Power’s commitment to supporting India’s vision for a Net-Zero carbon future with local manufacturing capabilities. About Tata Power: The Tata Power Company Limited, a vertically integrated power company and part of the Tata Group, India’s largest multinational business conglomerate, has built a diversified portfolio across the entire power value chain, with its total operational and under-construction capacity surpassing 26 GW. This includes approximately 17.7 GW of clean and green energy capacity (including projects under construction) and around 8.8 GW of thermal generation capacity, ensuring a balanced and resilient energy mix. The Company also has a strong transmission and distribution footprint, with over 7,800 circuit kilometres of transmission lines, including pipeline projects, and serves over 13 million customers across its distribution businesses, making it one of India’s largest private power distribution companies. Further strengthening its leadership in future-ready energy solutions, Tata Power has established 4.9 GW of integrated solar cell and module manufacturing capacity, signed 2.8 GW of pumped hydro storage projects, and expanded its EV charging network to over 7,000 public charging points across 717 cities and towns in India. As a pioneer in India’s clean energy transition, Tata Power remains committed to achieving Net Zero by 2045 and continues to partner with public and private stakeholders to deliver reliable, sustainable, and technology-led energy solutions across the country. Disclaimer The following press release/announcement may contain forward-looking statements within the meaning of applicable securities laws and regulations. These statements are based on management's current views, expectations, assumptions, and projections regarding the Company's future performance, business plans, growth prospects, competitive and regulatory environment, and other related matter. Such forward-looking statements are subject to various risks and uncertainties, which may cause actual results to differ materially from those expressed or implied in the statements. Factors that could cause actual results to differ materially from those contemplated in the forward-looking statements are not limited to changes in economic conditions affecting demand/supply and price conditions in the domestic and overseas markets in which the Company operates, alterations in the business environment, fluctuations in Government regulations, laws, statutes, judicial pronouncements, and other incidental factor. The Company does not undertake any obligation to publicly update or revise any forward-looking statements based on subsequent events, information, or developments, except as required by applicable laws and regulations. For further information, please contact: Jyoti Kumar Bansal, Chief – Branding & Communications, Tata Power Adfactors PR: Email: jyotikumar.bansal@tatapower.com Siddharth Kumar Siddharth Gaur – Head Public Relations, Tata Power 9902929187 E-mail: Siddharth.gaur@tatapower.com Email:siddharth.kumar@adfactorspr.com