Once the Strait of Hormuz is blocked, the world’s largest aluminum plant can’t hold on anymore.
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The world's largest single-site aluminum smelter has been forced to cut production due to disruptions in raw material supply, bringing to light a supply chain crisis for Middle Eastern aluminum producers.
Aluminium Bahrain BSC (Alba) announced that it has begun the phased shutdown of three production lines, representing 19% of its total capacity. The direct reason is the effective disruption of shipping through the Strait of Hormuz, severely impacting both metal exports and alumina imports.
The company stated that the shutdown is a "controlled and safe operational measure" aimed at ensuring business continuity, optimizing the use efficiency of existing raw material inventory, and maintaining overall operational stability. Meanwhile, Trump has refused to accept the Iran deal under current conditions, tensions in the Middle East continue to rise, and the timeline for supply chain recovery remains highly uncertain.
Three Production Lines Halted, Impacting Capacity
Alba operates the world's largest single-site aluminum smelter, with an annual capacity of 1.6 million tons. The shutdown involves reduction lines 1, 2, and 3, which together account for 19% of total capacity. The company will continue to operate reduction lines 4, 5, and 6, and will carry out structured maintenance and upkeep on the paused lines to ensure they are ready for potential restart.
Alba is majority owned by the Bahrain state. The company stated that this "targeted action against specific production lines" aims to optimize resource allocation, focusing on operational stability given limited raw material inventory.
Hormuz Disruption Affects Entire Middle Eastern Aluminum Industry
The root cause of the shutdown lies in the disruption of shipping through the Strait of Hormuz. This strait is a crucial channel for metal exports and alumina imports in the Middle East; the actual disruption has caused Alba and other Middle Eastern aluminum producers to simultaneously face shortages in raw materials and obstacles in finished product shipments.
Alumina is a core raw material for aluminum production. Once import channels are blocked, smelter inventory is depleted rapidly, forcing a choice between maintaining full capacity operation and securing inventory safety. Alba's decision to proactively cut production is a preventive measure to manage cash flow and reduce the risk of short-term supply fluctuations.
Company Seeks Alternatives to Address Supply Volatility
According to the company's statement, Alba is actively developing alternative supply channels to reduce exposure to the current disruption. This move shows management’s recognition that the situation in the Strait of Hormuz is unlikely to ease soon, and is shifting from passive defense to proactive crisis management.
The company emphasized that the primary objectives of the production cut include: maintaining production resilience, prudent management of working capital, and establishing a systematic maintenance mechanism for suspended lines. These statements are meant to signal to the market that the shutdown is a reversible action; once the supply chain recovers, the paused capacity can be restarted.
However, with Trump clearly rejecting the current Iran deal terms and ongoing tensions in the Middle East, Alba and other regional aluminum producers continue to face significant pressure, and the market’s short-term expectations for regional aluminum supply remain cautious.
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