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What next as China approaches peak aluminum production? Andy Home

What next as China approaches peak aluminum production? Andy Home

China's aluminum production is approaching its capacity limit.

From just four million tons in 2004, massive investment in primary metals melting capacity has boosted Chinese production from only four million to 43 million tons by 2024. This is 60% of global output. The West has increasingly resisted China's increasing dominance in the global aluminum supply chain, first through trade complaints and antidumping duties, and then more recently with U.S. Tariffs.

China's semi-fabricated aluminum exports, which increased by 19% last year to a record of 6.2 million tonnes, were not affected.

Things are about to get better. The world is about to change.

Beijing's "Action Plan" on aluminium for 2025-2027 confirms that the cap will remain in place, and outlines a plan for what comes next.

TOUCHING the ceiling

According to the International Aluminium Institute, China's primary aluminum production increased by 2.6% on an annual basis in the first quarter 2025.

The average annualised production was 44 million tonnes between January and March, only a million ton short of the cap of 45 million tons set in 2017.

According to consultancy AZ Global, it is technically possible that the country's production could exceed the cap.

The capacity of a smelter is measured by the amperage designed for the electrolysis process. "One of the first tasks of any plant manager will be to push the output above the rate," the article says. The smelter can produce more than its capacity by increasing the amperage.

AZ China estimates China's capacity utilisation at 98.2%. This leaves little room for collective amperage to increase.

China's average annual growth rate of 4.0% over the past five years is beginning to slow down.

Going Green

Chinese operators continue to build new smelters. However, the new capacity will have to be offset by closing older capacity.

Beijing's policies in this sector focus on removing less-efficient capacity and ensuring that newer smelters use renewable energy sources.

Aluminium production is moving from coal-rich regions to new energy hubs such as Yunnan, with its hydropower and Inner Mongolia which has a massive wind and solar power potential.

The goal is to produce a greater amount of low-carbon metal. The action plan also calls for 30% of the national smelter's power to be generated by renewable energy by 2027.

Beijing wants to boost production by recycling scrap to reach a target of 15 million tons annually in 2027.

Reduced Exports

A second offset is already in effect. In December, the government eliminated tax rebates of 13% for exports of aluminum products. This was done to keep more metal on the domestic market.

Exports have slowed down sharply since then, with volumes outbound falling by 11% on an annual basis in January and Febraury.

Analysts at Macquarie Bank predict that exports will fall by 8% between 2025 and 2030. A more dramatic collapse is unlikely, as the world outside China relies heavily on its products for around 15% of the total demand.

Most Western buyers are likely to accept at least a part of the cost increase.

It is possible that Chinese aluminum exports have reached their peak.

REPRIEVE FOR WESTERN GENERALISERS?

Combining a slowdown in Chinese production growth with reduced exports opens up a window for the rest the world's primary aluminum producers.

Nearly a million tonnes of smelting capacity in the United States is idle. The 25% tariffs on aluminum imports imposed by President Donald Trump are meant to encourage restarts.

After the surge in power prices that followed Russia’s invasion of Ukraine, 2022, around half of Europe's primary smelting capacities are out of operation.

Although the structural changes implemented by the largest producer in the world may provide a reprieve for such plants, restarting idled capacities is also a matter of aluminium and electricity prices.

After years of low investments, there is renewed interest in greenfield smelters being built in the West. Century Aluminum, a U.S.-based producer, has received $500m in government funding for a project that will launch the United States' first new smelter since 1945. Rio Tinto has been studying low-carbon projects for smelters in Finland and India.

But the Chinese dominance will remain

Due to a lack of expansion opportunities in China, Chinese producers also look overseas. Beijing's aluminum action plan calls on deeper cooperation with resource rich nations like Guinea, where Chinalco has a project in place to convert Guinea's bauxite into alumina. Shandong Nanshan Aluminium, which produces alumina in Indonesia, plans to expand their refining capacities and add a smelter that can produce 260,000 tons of alumina per year.

China has stopped building its own capacity, but it appears that they have no plans to loosen their grip on a material classified by the United States as well as the European Union as a vital raw material.

These are the opinions of the columnist, an author for.

(source: Reuters)