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Hindalco warns of 5% cost surge amid coal supply tightness

India's largest aluminium producer Hindalco Industries has flagged mounting pressure on production costs as coal inventories at key smelters dwindle to critical levels. The company expects aluminium manufacturing expenses to climb another 5% in the third quarter of FY2027.

LSN India · 6 November 2026

Hindalco warns of 5% cost surge amid coal supply tightness

Hindalco Industries has raised concerns over tightening coal supplies, citing inventory levels at its major smelting facilities that have fallen to approximately half their normal operating reserves. The shortfall is expected to weigh on the company's cost structure, with management projecting a 5% increase in aluminium production costs during Q3FY27.

The inventory constraints are being felt acutely at Hindalco's Mahan and Renukoot smelting operations, two critical facilities in India's aluminium production ecosystem. These plants require consistent coal supplies to maintain efficient operations, and the current depletion of stockpiles has forced the company to reassess its cost projections for the coming quarter.

The anticipated cost increase reflects broader challenges facing India's metals sector, where energy input costs represent a substantial portion of overall manufacturing expenses. Coal supply disruptions can cascade through production schedules, potentially affecting the company's competitiveness in both domestic and export markets.

Hindalco's disclosure suggests the company is bracing for continued pressure on margins in the near term. Industry observers are monitoring whether other aluminium producers will face similar supply-side constraints, which could have broader implications for India's metals and mining sector performance in the coming months.