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Australia’s South32 reviews Mozambique Al operations

  • Market: Metals
  • 14/07/25

Australian metal producer South32 is reviewing the value of its 580,000 t/yr Mozal aluminium smelter in Mozambique, southeast Africa, and the plant's production target, over electricity supply issues.

South32 expects to partially write down the value of Mozal in its upcoming financial report for the 2024-25 fiscal year ending 30 June. It is also reviewing Mozal's production target for the 2025-26 fiscal year. The target has not been released yet.

Mozal runs on electricity supplied by Mozambique generator Hidroeléctrica de Cahora Bassa (HCB), which is partly owned by the country's government, and South African utility Eskom.

South32's power supply agreement with the two providers will end in March 2026, the company said on 14 July. It has been negotiating a new agreement with HCB, Eskom and Mozambique's government for six years. But it has not been able to secure a deal.

South32 may need to halt production at Mozal if it cannot sign a new supply agreement by March 2026, the company said.

The company has faced operational challenges in Mozambique since late 2024. It withdrew Mozal's 2024-25 production guidance in early December 2024 because of civil unrest in the country.

But the company later reset it to 350,000t, on an equity basis. South32 produced 314,000t of aluminium at the smelter, on an equity basis, in 2023-24.

Mozal is not the only smelter facing electricity issues. Aluminium smelters consume large amounts of energy and global producers often face supply challenges.

UK-Australian producer Rio Tinto is seeking the Australian government's support for its 600,000 t/yr Tomago smelter in New South Wales, Australia, because of energy costs.

Rio Tinto also ran its 335,000 t/yr Tiwai Point aluminium smelter in New Zealand at a reduced rate over the second half of 2024, in response to an electricity demand reduction request from New Zealand utility Meridian Energy.


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