Latest News

Andy Home: ROI-Power overrules tariffs, as another US aluminum smelter closes.

The United States has lost another primary metal production plant due to the U.S. import duties.

Century Aluminum will cease production at its Hawesville Smelter in 2022 due to the increase in energy prices following Russia's invasion in Ukraine.

Once power prices dropped, the company expected to resume operation within a year. Century sold the Kentucky site to TeraWulf, a digital infrastructure company.

Aluminum smelters consume a lot of energy. A modern plant can use more than a city of the size of Boston.

Big Tech is also willing to pay more for data centers, and the fight for long-term energy supply.

HALTING THE SLIDER

Last year, U.S. president Donald Trump raised the import tariffs on aluminium to 50% with the stated aim of stopping the decades-long decline in the domestic primary metals capacity.

Century's Mount Holly smelter, in South Carolina, has had a limited impact on the immediate future. It will restart 50,000 metric tonnes of annual production capacity. Tariffs were important, but extending the power supply agreement with Santee Cooper (local energy provider) was more?important.

By the middle of 2026, the plant will be operating at near-capacity of 220,000 tonnes per year.

A 60:40 joint-venture between Emirates Global Aluminium and Century in Oklahoma promises a future of a greenfield smelter that is state-of-the art.

Bechtel, a U.S. engineering company, has been selected by the partners to conduct preliminary studies on the proposed plant. It would have an annual capacity of approximately 750,000 tons.

Oklahoma is able to produce three times as much energy as it consumes. A power supply agreement for the new plant is still in the works. Even if construction starts on time by the end this year, the first metal production will likely not begin until 2030.

Loss of Capacity Flex

The permanent 'closure' of Hawesville reduces the idled capacity which could be activated to fill in the gaps before the new Oklahoma Smelter is online.

Hawesville is not only the second largest remaining smelter of aluminum in the U.S., with an annual capacity of 252,000 tonnes but it's also a major supplier of high purity aluminium for aerospace and defense applications.

Alcoa has a 54,000 ton-per-year production at Warrick in Indiana that is idle, but it does not seem to be in a hurry to restart it.

The cost of reactivation is estimated at $100 million, and it would take two years. "At this point, we are unlikely to restart," William Oplinger, Alcoa's President and CEO, told analysts during the company's Q4 results call for 2025 last month.

The only remaining smelter is the New Madrid one in Missouri. It was reactivated by 2018 and closed in 2024.

Tariffs have reignited hope that the 263,000 ton-per-year facility could be brought back to life, but it would cost a lot and take time, just like with Warrick.

Magnitude 7 Metals, the current owner of Magnitude 7, has not indicated its intentions.

No Tariff TRUce

According to the U.S. Geological Survey, 60% of aluminum consumption in the United States last year was imported.

It won't change until the Oklahoma Smelter moves from project status into?actual production.

The Trump administration does not seem to be willing to back down on its import tariffs.

The White House dismissed media reports that it might lower tariff rates or grant more exemptions, as "baseless speculative".

According to an official in the administration, Trump "will not compromise on reviving domestic manufacturing which is crucial to our economic and national security. This includes steel and aluminum production."

Some tweaks may be made to the tariffs on aluminium, but a wholesale rollback is unlikely.

The price of aluminium in the United States will be high for a few years.

S&P Global Platts assesses the Midwest Aluminium Premium, which is traded on CME. This premium captures the tariff impact of the market.

The London Metal Exchange Cash Price is $2,290 higher than the premium. This results in a "all-in price" of $5,300 for a ton.

Hawesville's inability to survive despite such a?high premium speaks volumes about the fierce competition with Big Tech over competitively priced energy.

AI still wins out against aluminium.

Andy Home is a journalist. This column is a favorite of yours? Open Interest (ROI), a data-driven, thought-provoking commentary on the markets and finance is available at Open Interest. Follow ROI on LinkedIn, X and X.

Listen to the Morning Bid podcast daily on Apple, Spotify or the app. Subscribe to the Morning Bid podcast and hear journalists discussing the latest news in finance and markets seven days a weeks. (Editing by Marguerita choy)

(source: Reuters)