Century Aluminum Company (NASDAQ:CENX) announced today that it has signed a new power purchase agreement extension with South Carolina Public Service Authority (Santee Cooper) that will secure a stable power supply for its Mt. Holly smelter through 2031. The extension is a critical step in the company’s plan to restart idle capacity at the Charleston‑area facility, which is currently operating at 75% capacity.
The company’s Mt. Holly restart is backed by a $50 million investment that will add 50,000 metric‑tonne of production capacity and is expected to increase overall U.S. aluminum output by 10%. The extension will enable the smelter to reach full production by early summer 2026, a level not achieved since 2015, and will create more than 100 new jobs with an average wage of $125,000 per employee.
The power agreement extension also reinforces the economic impact of the Mt. Holly plant, which contributes approximately $900 million annually to South Carolina’s economy. By securing long‑term power, Century Aluminum removes a key operational risk, supports its capacity expansion strategy, and strengthens its position as the largest U.S. primary aluminum producer.
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