Century Aluminum Boosts U.S. Aluminum Production by 10% with Mt. Holly Expansion — Century Aluminum Company

Event summary

Century Aluminum's expansion of its Mt. Holly smelter increases U.S. primary aluminum production by ~10%.
The expansion grows the Mt. Holly workforce to over 600 employees.
The project is supported by President Trump’s Section 232 national security tariff on aluminum.
Commerce Secretary Howard Lutnick, Senator Tim Scott, and Governor Henry McMaster will attend a ribbon-cutting ceremony on July 27, 2026.

The big picture

Century Aluminum's expansion aligns with broader efforts to strengthen domestic manufacturing under trade policies like Section 232. The increase in production capacity could reshape the U.S. aluminum market, particularly if tariffs remain in place. This move also highlights South Carolina’s growing role as a hub for industrial expansion.

What we're watching

Trade Policy Impact: How sustained tariffs will affect long-term domestic aluminum production.
Operational Scaling: Whether Century Aluminum can maintain efficiency at higher production levels.
Market Dynamics: The pace at which increased U.S. supply influences global aluminum pricing.