South32 to halt Mozal Aluminium operations due to electricity issues

South32 Limited announced it will place its Mozal Aluminium operation in Mozambique on care and maintenance by March 2026 due to an inability to secure sufficient and affordable electricity beyond its current supply agreement, following unsuccessful negotiations with power providers. This decision triggers an immediate limitation of investment and a US$372 million impairment charge against Mozal in its FY25 financial results, reducing the asset's carrying value to US$68 million. The move highlights the operational risks associated with energy supply in the region and will impact the company's aluminium production, with FY26 output from Mozal projected at a reduced 240,000 tonnes.

Analysis

South32 Limited has confirmed a material negative development by placing its Mozal Aluminium operation on care and maintenance by March 2026, a decision driven by the failure to secure a viable long-term electricity supply contract. This move crystallizes a significant operational risk, resulting in an immediate halt to new investment and a substantial US$372 million impairment charge to be recognized in the FY25 financial results. The write-down, comprising property, plant, equipment, and other assets, will reduce Mozal's carrying value to a minimal US$68 million, although it will be excluded from underlying earnings. Operationally, the impact is immediate, with production for FY26 now guided down to approximately 240,000 tonnes, reflecting the wind-down process. The inability to reach a confident agreement with the Government of Mozambique and key power suppliers underscores the acute energy and sovereign risks associated with operating in the region.

Key Decisions for Investors

• Investors should immediately revise their financial models for South32 to incorporate the US$372 million impairment in FY25 statutory earnings and the permanent loss of future cash flows from the Mozal asset beyond March 2026.
• This event serves as a critical case study on operational risk; it is prudent to re-evaluate the risk weighting for other South32 assets located in jurisdictions with comparable energy supply or political uncertainties.
• While the news is negative, the write-down provides clarity on a long-standing issue, and investors should now assess whether the current stock price fully reflects the removal of Mozal's future contribution and focus on the valuation of the remaining portfolio.