Overview

• Closing the 60-year-old plant removes 2.2 million tonnes of annual capacity, taking Alcoa’s global refining capacity to 11.7 million tonnes.
• About 220 remaining employees will be reduced during 2026, with a smaller team staying on beyond 2026 to prepare the site after a workforce that was about 800 in early 2024.
• Alcoa cites the facility’s age, high operating costs, market conditions, and declining bauxite grade after exploring options that failed to support a restart.
• Port and rail operations at Kwinana will continue as Alcoa coordinates a safe closure, residue area management, and potential redevelopment with the WA government.
• Alcoa expects roughly US$890 million in restructuring and related charges in the third quarter of 2025 and about US$600 million over the next six years, with asset retirement and environmental spend estimated at about $260 million in 2025 and around $300 million in 2026.