Vedanta’s Konkola Copper Mines (KCM) has begun a 60-day shutdown of its Nchanga smelter in Zambia for maintenance and repairs, in a move the company says is aimed at improving operational efficiency and long-term production performance.
The temporary closure, which started this week, forms part of a broader modernisation programme at the Indian-owned mining firm, which is seeking to boost output in Africa’s second-largest copper producer.
KCM said the maintenance work is intended to enhance reliability across its processing systems and support future production growth as the company targets significantly higher output in the coming years.
The company produced 80,215 metric tonnes of copper in 2025, according to Zambia’s mines ministry, and has set a long-term goal of reaching 300,000 tonnes per year by 2030.
The shutdown of the Nchanga smelter is part of a wider maintenance schedule across Zambia’s copper industry, with at least two other major processing facilities — Mopani and Chambishi — also expected to undergo extended shutdowns between June and mid-September.
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The overlapping maintenance programmes are expected to temporarily tighten regional copper processing capacity, at a time when global supply chains for key industrial minerals remain sensitive to disruptions.
Copper is Zambia’s largest export earner and a cornerstone of government revenue, making any interruption in processing activity closely watched by markets and policymakers.
The country has set an ambitious target of increasing national copper output to three million tonnes by 2031, up from 890,346 tonnes in 2025, as it seeks to capitalise on rising global demand for the metal, which is essential for electrification and renewable energy infrastructure.
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Analysts say the scheduled maintenance could have short-term implications for refined copper supply, particularly if multiple smelters remain offline simultaneously.
Sulphuric acid production — a key input in copper and cobalt processing — may also be affected. The compound is widely used in hydrometallurgical operations, and any supply constraints can impact recovery rates at leaching facilities.
KCM said it will continue supplying acid to its Nchanga tailings leach plant, which recovers copper from waste material, using external sources as well as production from its own 500-ton-per-day acid plant at Nchanga.
The company did not indicate whether the shutdown would affect its annual production guidance, but said the maintenance was necessary to ensure long-term operational stability.
Zambia’s mining sector has been undergoing a series of restructuring and expansion efforts in recent years as the government seeks to attract investment and improve output from ageing infrastructure.
However, operational disruptions, energy constraints and global supply chain pressures continue to pose challenges for sustained growth in copper production.
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Copper prices have remained sensitive to supply-side developments globally, with Zambia’s output playing an increasingly important role in meeting demand from industries linked to electric vehicles, power grids and industrial manufacturing.
The maintenance programme comes at a critical time for the sector as Zambia balances short-term production interruptions with longer-term ambitions to significantly expand its share of global copper supply.
