Hindustan Zinc Limited has increased its renewable power consumption to 22% and is targeting 70% by FY 2028

HZL/2026-27/SECY/76 August 18, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, 5th Floor Plot No., C/l, G Block Dalal Street, Fort Bandra-Kurla Complex, Bandra (East), Mumbai – 400 001 Mumbai – 400 051 Kind Attn: General Manager – Department Kind Attn: Head Listing & Corporate of Corporate Services Communication Scrip Code: 500188 Trading Symbol: HINDZINC Dear Sir/Ma’am, Sub: Press Release We are pleased to inform you that Hindustan Zinc Limited has increased its renewable power consumption to 22% and is targeting 70% by FY 2028. The press release in this regard is enclosed. The same is also available on the website of the Company at www.hzlindia.com. The disclosure is being made in compliance with Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. This is for your information and records. Thanking You. Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer Encl: as above Hindustan Zinc increases renewable power consumption to 22%; Targets 70% by FY28 • Renewable power consumption increases from ~18% in FY26 to current 22% of overall power consumption • 530 MW round-the-clock renewable power arrangement to support transition towards 70% renewable power by FY28 • Clean energy adoption supports Hindustan Zinc’s SBTi-validated Net Zero 2050 or sooner ambition Udaipur, 18 August 2026: Hindustan Zinc Limited (BSE: 500188 | NSE: HINDZINC), the world's largest integrated zinc producer and one of the world's top ten silver producers, has increased the share of renewable power in its current overall power consumption to 22%, up from approximately 18% in FY26, marking continued progress in its clean energy transition. The company is progressing towards meeting approximately 70% of its overall power requirements through renewable energy by FY28, as it scales clean energy adoption across its mining and smelting operations. Across its business units in Rajasthan and Uttarakhand, Hindustan Zinc has continued to strengthen its renewable power generation capabilities. During FY26, the company generated 892 million units of green power, compared with 632 million units in FY25. The increase in green power generation, along with renewable power procurement, has contributed to the steady growth of renewable energy in the company’s overall power mix. The company is progressing towards its ambition of sourcing 70% of its total electricity requirements from renewable sources by FY28. To support this target, Hindustan Zinc expanded its round-the-clock renewable energy power delivery agreement with Serentica Renewables from 450 MW to 530 MW. In addition, Hindustan Zinc is advancing its energy transition by upgrading power connectivity from the state transmission network to the central transmission utility, alongside implementing innovative in-house projects that support a cleaner, more resilient and energy-efficient future. Key initiatives include enhancing waste heat recovery boiler steam turbine generation through efficiency improvements and harnessing renewable energy through floating solar installations on water ponds The organization’s renewable energy portfolio combines solar, wind and energy storage solutions to enable reliable round-the-clock clean power across the company’s operations. The arrangement is expected to progressively increase the contribution of renewable energy to Hindustan Zinc’s overall power mix as additional capacity is integrated. Highlighting the company’s accelerating clean energy transition, Mr. Amarendu Prakash, CEO, Hindustan Zinc, said “The next chapter of growth in metals and mining will be defined by our ability to produce more with a progressively lower environmental footprint. With renewable power now accounting for 22% of our power consumption and our ambition to take this to 70% by FY28, we are demonstrating that clean energy is not simply a decarbonization lever; it is fundamental to creating a more resilient, competitive and responsible business. By transforming the way we Sensitivity: Public (C4) power our operations, we are strengthening Hindustan Zinc for a low-carbon future while supporting India’s journey towards energy security and a Viksit Bharat.” These efforts form an integral part of Hindustan Zinc's broader sustainability roadmap and support its Science Based Targets initiative (SBTi)-validated decarbonisation pathway towards achieving Net Zero emissions by 2050 or sooner. During the year, the company continued to strengthen its position as a sustainability leader, building on its recognition as the world's most sustainable metals and mining company by the S&P Global Corporate Sustainability Assessment and its membership of the International Council on Mining and Metals (ICMM), the highest global benchmark for responsible mining. Hindustan Zinc, a Vedanta Group company, advances its next phase of growth and moves towards a multi-metal future, clean energy will remain central to its strategy of producing metals essential for India’s growth and the global energy transition through increasingly sustainable and responsible operations. About Hindustan Zinc Hindustan Zinc Limited (BSE: 500188 and NSE: HINDZINC), a Vedanta Group company, is the world’s largest integrated zinc producer and is amongst the top 10 silver producers globally. The company supplies to more than 40 countries and holds a market share of about 74% of the primary zinc market in India. Hindustan Zinc has been recognized as the world’s most sustainable company in the metals and mining category for the third consecutive year by the S&P Global Corporate Sustainability Assessment 2025, reflecting its operational excellence, innovation, and leading ESG practices. The company also became the first Indian company to join the prestigious International Council on Mining & Metals (ICMM) in 2025. The company also launched EcoZen, Asia’s first low carbon ‘green’ zinc brand, produced using renewable energy. Hindustan Zinc is also a certified 3.32 times Water-Positive company and is committed to achieving Net Zero emissions by 2050 or sooner. The company is also transforming the lives of 2.6 million people through its focused social welfare initiatives. As an energy transition metals company, Hindustan Zinc is pivotal in the journey of sourcing critical metals essential for a sustainable future. For more information, please visit – https://www.hzlindia.com/home/ and follow us on LinkedIn, X, Facebook and Instagram for more updates. For media queries, please contact: Maitreyee Sankhla Head Corporate Communications Hindustan Zinc Limited Maitreyee.Sankhla@vedanta.co.in Sensitivity: Public (C4)