Updates

HZL/2026-27/SECY/89 October 07, 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/Madam, Sub: Climate Action Report for the financial year 2025-26 Please find enclosed herewith the Climate Action Report for the financial year 2025-26 of the Company. The aforesaid report is being made available on the Company's website and can be accessed at https://www.hzlindia.com/ 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 Sensitivity: Public (C4) Hindustan Zinc Limited Climate Action Report 2025-26 Hindustan Zinc Limited Climate Action Report 2025-26 CONTENTS EXECUTIVE SUMMARY Hindustan Zinc continued to strengthen its position as a global emissions while continuing to progress toward its climate EXECUTIVE SUMMARY 1 sustainability leader, retaining its Global No. 1 Ranking in the commitments. ABOUT THIS REPORT 2 S&P Global Corporate Sustainability Assessment (CSA) 2025 for the third consecutive year by advancing decarbonisation, In FY2025-26, HZL reported combined Scope 1 and Scope 2 MESSAGE FROM THE CHAIRPERSON 4 water stewardship, circular economy, climate governance, emissions of 5.02 million tCO2e and Scope 3 emissions of 1.47 MESSAGE FROM THE CEO 6 and climate-related disclosure maturity. As one of the world’s million tCO2e. The year also saw a meaningful increase in leading integrated zinc producers and a key supplier of metals renewable power utilisation, with 892 MU of renewable power KEY HIGHLIGHTS FY2025-26 8 critical to the low-carbon transition, the Company recognises consumed, contributing to an estimated 0.83 million tCO2e GOVERNANCE 10 that climate change is both a material business risk and a reduction. The Pantnagar Metal Plant continued to operate on strategic opportunity. Its approach therefore combines 100% renewable power. CLIMATE GOVERNANCE AND ACCOUNTABILITY 12 risk mitigation, operational resilience, capital deployment, CLIMATE SCENARIO ANALYSIS AND STRATEGIC RESILIENCE 14 low-carbon product innovation, and long-term business Beyond operational decarbonisation, HZL further strengthened transformation. its market positioning through low-carbon and sustainability- PHYSICAL CLIMATE RISKS ACROSS OUR SITES 15 linked value creation. EcoZen, Asia’s first low-carbon zinc TRANSITION CLIMATE RISKS AND OPPORTUNITIES 18 The Company’s climate ambition remains anchored in its product, continued to demonstrate how climate action Science-based Targets initiative-aligned pathway: to reduce can create product differentiation and support customers’ FINANCIAL QUANTIFICATION 22 Scope 1 and Scope 2 emissions by 50% and Scope 3 emissions downstream Scope 3 reduction goals. On water stewardship, TRANSITION PLAN AND DECARBONISATION PATHWAY 23 by 25% by 2030, from the FY2020 baseline, and to achieve Net HZL remained 3.32x water positive, reduced freshwater use by Zero by 2050 or sooner. 13% against the FY2020 baseline, and continued scaling treated VALUE CHAIN RISK ASSESSMENT 24 sewage water use and recycling. On circularity, the Company SUPPLIER RISK ASSESSMENT 25 Considering HZL’s planned expansion to reach 2 million tonnes generated significant value through reuse and beneficial of metal capacity by 2030, achieving the SBTi near-term target utilisation of waste streams, contributing both to environmental SUSTAINABILITY THROUGH SUPPLIER COLLABORATION 26 may be challenging from a Scope 1 and Scope 2 perspective outcomes and business performance. CUSTOMER RISK ASSESSMENT 27 due to the associated increase in absolute energy demand and emissions accounting complexity. However, HZL remains Governance oversight of climate-related matters continued ECOZEN: LOW-CARBON ZINC 28 firmly committed to achieving its SBTi-approved targets and through Board and management structures, including the AVOIDED EMISSIONS AND CUSTOMER DECARBONISATION 28 is actively addressing these transition challenges through a Sustainability & ESG Committee and enterprise-level risk robust decarbonisation roadmap. Key interventions include oversight processes. Climate-related issues are considered RISK MANAGEMENT 30 shifting from the State Transmission Utility model to the Central in strategic planning, investment decisions, risk assessment, CLIMATE RISK REGISTER 32 Transmission Utility model to improve power procurement and remuneration-linked sustainability performance. The efficiency and reduce transmission losses, along with adding Company continues to improve the quality and consistency INTERNAL CARBON PRICING 34 990 MW of battery energy storage capacity to support green of its climate disclosures. This report provides a clearer and METRICS AND TARGETS 36 power demand for both existing and expanded capacity. With more comprehensive overview of its climate-related approach, these measures, HZL is well placed to manage growth-related aligned with IFRS S2 and informed by leading CDP disclosure WATER, WASTE AND CIRCULARITY PERFORMANCE 40 practices. NATURE, BIODIVERSITY AND CLIMATE INTERLINKAGES 40 CLIMATE POLICY ENGAGEMENT AND INDUSTRY PARTICIPATION 41 CLIMATE-RELATED EFFECTS ON STRATEGY AND FINANCIAL PLANNING 44 WAY FORWARD 47 FORWARD LOOKING STATEMENT 48 IFRS S2 ALIGNMENT INDEX 49 APPENDIX A - PHYSICAL CLIMATE RISK ASSESSMENT METHODOLOGY 50 ASSURANCE STATEMENT 52 Hindustan Zinc Limited Climate Action Report 2025-26 ABOUT THIS REPORT Reporting Time Horizons used Period: in this Report: Reporting period: April 01, 2025 to March 31, 2026, aligned with HZL defines short term, medium term and long term horizons This Climate Action Report presents Hindustan Zinc Limited’s climate-related Hindustan Zinc Limited’s (HZL) financial reporting year. for use across governance, risk management, strategy and governance, strategy, risk management, metrics, targets, and progress for FY2025-26. metrics sections. Short term is defined as up to 2 years, Medium The report is intended to provide investors, customers, lenders, employees, regulators, term as 3–5 years, and Long term is 6-20 years. Accordingly, communities, and other stakeholders with decision-useful information on how climate- Reporting 2030 is considered within the medium-term planning horizon, while longer-dated strategic ambitions such as 2050 are Boundary: related risks and opportunities affect the Company’s business model, strategy, value considered long-term. chain, financial planning, and long-term resilience. The reporting boundary for this Climate Action Report is aligned with Hindustan Zinc Limited’s financial statement boundary and Frameworks This report is structured to align with the four pillars of IFRS assurance, this report includes disclosures on organisational remains unchanged from the boundary applied in the previous S2 Climate-related Disclosures—Governance, Strategy, Risk boundaries, time horizons, substantive effect assessments, reporting year. Accordingly, the report covers Hindustan Referenced: Management, and Metrics & Targets—and is designed to embed and the processes used to identify and manage climate-related Zinc Limited’s consolidated operations and, where relevant, the climate change-related disclosure requirements beyond dependencies, impacts, risks, and opportunities. It also presents upstream and downstream value-chain interfaces considered IFRS S2, GHG Protocol, Science-based Targets initiative, governance oversight, transition planning, scenario analysis, metrics that support an understanding of the Company’s for climate risk, opportunity and Scope 3 assessment. Integrated Reporting principles, relevant GRI disclosures, and climate-related financial impac [Showing first 8,000 characters — download PDF for full document]