L&T Clinches Major EPC Deal for Hindustan Zinc’s Debari Smelter Upgrade

Larsen & Toubro (L&T), a leading Indian multinational in engineering, procurement, and construction (EPC) projects, announced that its Minerals & Metals (M&M) business vertical secured a significant EPC contract from Hindustan Zinc Limited (HZL), a Vedanta Group company. Valued between Rs 2,500 crore and Rs 5,000 crore (approximately $300–600 million), the contract involves the establishment of a 250 KTPA (kilotonnes per annum) Leaching, Purification, and Cellhouse (LPC) facility and a 125 KTPA Jarosite Circuit at HZL’s Debari Smelter Complex in Rajasthan. The project aims to produce Special High Grade (SHG) Zinc Cathodes with 99.995% purity, reinforcing HZL’s position as one of the world’s largest zinc producers and supporting India’s growing demand for refined zinc. This article explores the project’s scope, significance, L&T’s role, and its implications for India’s industrial landscape.

Project Overview and Scope

The EPC contract, classified as “large” by L&T’s project valuation (Rs 2,500–5,000 crore), encompasses a comprehensive scope to enhance HZL’s zinc production capacity at the Debari Smelter Complex, located near Udaipur, Rajasthan. Key components include:

• 250 KTPA LPC Facility: This facility will handle leaching, purification, and electrowinning processes to produce SHG zinc cathodes with 99.995% purity, used in galvanizing, alloy production, and industrial applications like battery manufacturing.

• 125 KTPA Jarosite Circuit: The circuit will manage jarosite, a by-product of zinc processing, ensuring environmentally responsible waste handling and compliance with regulations.

• End-to-End EPC Services: L&T’s responsibilities cover design and engineering, procurement, site services, installation, and commissioning of the Calcine Storage, Leaching, Purification, and Electrowinning (Jumbo Cell House) plant. The scope also includes auxiliary systems such as utilities, Effluent Treatment Plant (ETP) Reverse Osmosis-Zero Liquid Discharge (RO-ZLD), plant electrics, instrumentation, and automation systems.

• Made-in-India Equipment: L&T will leverage its manufacturing facilities in Kansbahal (Odisha) and Kancheepuram (Tamil Nadu) to supply equipment, aligning with India’s Make in India initiative.

The project is part of HZL’s ambitious expansion strategy to meet rising demand for zinc, driven by sectors like infrastructure, automotive, and renewable energy, where zinc is critical for galvanizing steel and battery production.

L&T and Hindustan Zinc: A Three-Decade Partnership

The Debari contract strengthens a 30-year partnership between L&T and HZL, during which L&T has been a trusted EPC partner for HZL’s capacity augmentation projects, ranging from beneficiation plants to smelter facilities. HZL, a subsidiary of Vedanta Limited since its privatization in 2003, is the world’s second-largest zinc producer, operating major mines like Rampura Agucha (the world’s largest zinc mine) and smelters in Chanderiya, Debari, and Dariba, Rajasthan, with a total zinc-lead production capacity of 1 million tonnes annually. The Debari Smelter, established in 1968, is a key facility for HZL, and this expansion will enhance its output of high-purity zinc.

T Kumaresan, Senior Vice President and Head of Minerals & Metals at L&T, commented, “This win reaffirms L&T’s leadership in the Minerals & Metals sector and underscores our commitment to delivering excellence that ensures customer satisfaction.” The contract builds on L&T’s recent successes, including a Rs 94,000 crore order inflow in Q1 FY26 and other EPC projects like a BESS-integrated solar plant in Bihar.

Strategic Significance

The Debari project holds significant implications for both companies and India’s industrial ecosystem:

• Boosting Zinc Production: The 250 KTPA LPC facility will increase HZL’s refined zinc output, supporting India’s infrastructure growth (e.g., galvanized steel for bridges and roads) and clean energy goals (zinc for batteries). India’s zinc demand is projected to grow at a CAGR of 5.8% through 2030, driven by urbanization and renewable energy.

• Environmental Compliance: The Jarosite Circuit and RO-ZLD system align with stringent environmental regulations, addressing concerns about industrial waste. This is critical as HZL faces pressure from the National Green Tribunal (NGT) to manage smelter by-products responsibly.

• Economic Impact: The project will create jobs in Rajasthan, stimulate local supply chains, and reinforce L&T’s role as a $30 billion multinational driving India’s industrial growth. The contract’s value (Rs 2,500–5,000 crore) underscores its economic significance.

• Make in India: L&T’s use of domestically manufactured equipment enhances India’s self-reliance in industrial infrastructure, reducing import dependency for critical components.

Market Response and Financial Context

Despite the contract win, L&T’s shares dipped 1% on August 1, 2025, closing at approximately Rs 3,600 after hitting a day’s high of Rs 3,636. Analysts attribute this to profit-taking after a strong Q1 FY26 performance, where L&T reported a 29% YoY increase in consolidated net profit to Rs 2,786 crore and a 15% rise in revenues to Rs 55,120 crore. The Debari contract adds to L&T’s robust order book, which stood at Rs 4.81 lakh crore as of June 2025, with 40% from international projects. HZL, with a market capitalization of Rs 2.97 lakh crore as of August 2025, continues to drive Vedanta’s growth, contributing 60% to its parent’s revenue.

Challenges and Opportunities

Challenges

• Project Execution: The complex scope, including advanced automation and RO-ZLD systems, requires precise coordination to meet timelines, especially given the 24–36-month typical duration for smelter projects.

• Cost Volatility: Fluctuations in raw material prices (e.g., steel, copper) could impact project costs, though L&T’s scale and captive manufacturing mitigate this risk.

• Environmental Scrutiny: HZL’s operations have faced NGT scrutiny for pollution. The Jarosite Circuit and ETP must perform flawlessly to avoid regulatory penalties.

Opportunities

• Market Leadership: The contract reinforces L&T’s dominance in the Minerals & Metals EPC sector, with prior projects like HZL’s Chanderiya fertilizer plant and BALCO’s aluminum smelter showcasing its expertise.

• Global Expansion: L&T’s experience with HZL could attract similar contracts from global zinc producers, leveraging its operations in over 30 countries.

• Sustainability Focus: The RO-ZLD system positions L&T as a leader in sustainable industrial solutions, aligning with global ESG (Environmental, Social, Governance) trends.

Future Outlook

The Debari Smelter expansion is a critical step in HZL’s goal to maintain its position as the world’s second-largest zinc producer, with a projected output increase of 10–15% by 2027. For L&T, the project strengthens its Minerals & Metals portfolio, which spans mining, minerals processing, and material handling across sectors like cement, steel, and ports. The company’s manufacturing units in Odisha and Tamil Nadu will play a pivotal role, potentially supplying equipment for future HZL projects, such as expansions at Chanderiya or Dariba.

The contract also aligns with India’s broader industrial and sustainability goals, supporting the National Critical Mineral Mission (NCMM), which emphasizes zinc as a critical mineral for clean energy and infrastructure. As L&T targets a debt-free status by FY28 and HZL aims for a 1.2 million tonne zinc-lead capacity, their partnership will drive innovation and economic growth in Rajasthan and beyond.

Larsen & Toubro’s Rs 2,500–5,000 crore EPC contract from Hindustan Zinc for the Debari Smelter Complex, announced on August 1, 2025, marks a significant milestone in their three-decade partnership. The project, involving a 250 KTPA LPC facility and a 125 KTPA Jarosite Circuit, will boost HZL’s production of high-purity zinc cathodes, supporting India’s infrastructure and clean energy needs. L&T’s comprehensive scope—covering design, procurement, and commissioning—underscores its leadership in the Minerals & Metals sector, while its use of made-in-India equipment aligns with national self-reliance goals. Despite a minor share price dip, the contract enhances L&T’s robust order book and positions both companies to capitalize on growing zinc demand. As India addresses civic challenges like Gurugram’s garbage crisis, industrial projects like Debari highlight the need for efficient governance and sustainable infrastructure to balance urban and industrial growth.