Aluminum Corporation of China will invest USD 1 billion in Guinea alumina production, securing bauxite supplies and expanding overseas refining capacity.
Aluminum Corporation of China (Chalco) has announced a significant investment of approximately USD 1 billion to construct an alumina plant and related production and operation facilities in Guinea. This strategic move, which saw Chalco's shares rise following the announcement, is set to establish the company's first overseas alumina production project. The plan was solidified through a supplementary agreement signed between Chalco and the Guinean government on May 21, 2026, integrating the new plant into the existing bauxite mine project located in Boffa, near the Atlantic Coast.
The primary motivation behind this substantial investment is Chalco's ambition to optimize its industry asset layout and bolster its international business capabilities. Crucially, it aims to secure a long-term and stable supply of high-quality bauxite, a vital raw material for its alumina business. Guinea is an attractive location for this venture due to its immense bauxite reserves, estimated to be one-third of the world's total, particularly in the Boffa and Boké provinces. These deposits are highly suitable for the Bayer refining process, offering favorable alumina-to-silica ratios that promise lower operating costs by reducing the need for caustic soda.
The new plant is projected to have an annual production capacity of 1.2 million tons of alumina and will include a specialized port and other essential supporting infrastructure. Chalco plans to establish a dedicated project company in Guinea, with its Hong Kong-listed subsidiary, Chalco Hong Kong, through Chalco Energy Holdings, overseeing the investment and construction. The Guinean government will hold an initial 5% stake in this project company and retains an option to increase its ownership to a maximum of 35% through additional investments at fair market value. Chalco's subsidiary, Chalco Guinea, which currently manages the Boffa bauxite mine, will gradually increase its bauxite supply to the new plant once operational. The broader bauxite mining project in Boffa commenced in 2018, with the alumina refinery representing a subsequent, crucial phase.
This project carries significant economic, geopolitical, and industry-specific impacts. For Chalco, it means enhanced long-term raw material security and a stronger position in the global aluminum value chain. For Guinea, it marks a pivotal shift towards capturing greater value from its natural resources by processing raw bauxite domestically rather than merely exporting it. This increased economic participation by Guinea is expected to foster improved regulatory alignment and long-term operational stability for the project. Geopolitically, the investment further solidifies the strategic relationship between Guinea and China. Within the industry, it signals a broader trend where Chinese producers are securing upstream refining capacity abroad, and resource-rich nations are demanding more industrial involvement in their extractive sectors. While beneficial for Guinea's economic role, the option for the Guinean government to increase its stake could potentially dilute Chalco's ultimate ownership in the asset.
