MMG expands Khoemacau copper mine with $900mn Botswana buildout

MMG

MMG expands Khoemacau copper mine after approving a major capacity upgrade in Botswana. The company will invest $900mn in a new processing plant. As a result, MMG expands Khoemacau copper mine output toward 130,000 t/yr by 2028.

The expansion centers on a new 4.5mn t/yr ore processing facility. MMG expects commissioning in the first half of 2028. Meanwhile, the project targets lower operating costs and higher copper unit volumes.

Lower cash costs reshape competitiveness

MMG expands Khoemacau copper mine while it targets a sharper cost curve position. The company expects cash costs below $1.60/lb after completion. However, Khoemacau reported $2.05/lb cash cost in the first half of 2025.

Lower cash costs can improve resilience during price pullbacks. Therefore, the project can keep throughput stable during tighter treatment charges. Stronger economics also improve financing options for future phases.

What it means for copper concentrate market tightness

MMG expands Khoemacau copper mine as the copper concentrate market tightness persists. The company links demand growth to electrification and data center construction. As a result, new mine-linked concentrates could ease feed shortages for smelters.

MMG also plans a 2026 pre-feasibility study for a third expansion phase. That phase could lift capacity toward 200,000 t/yr. Meanwhile, the staged approach reduces execution risk while keeping growth optionality.

The project also reflects China’s rising overseas copper footprint. Chinese-owned mines continue to lift concentrate supply outside China. Therefore, downstream buyers may face a more competitive market for long-term concentrate contracts.

The Metalnomist Commentary

This expansion looks like a disciplined response to tight concentrate fundamentals. However, timeline risk remains high for large processing builds. The winners will lock in power, logistics, and permitting before costs inflate again.