Century Aluminum Company

What the company does

Century Aluminum is a global primary aluminum producer with three smelters: two in the U.S. (Sebree, Kentucky and Mt. Holly, South Carolina) and one in Iceland (Grundartangi). The company also owns a carbon anode facility in the Netherlands (Vlissingen) and holds a 55% stake in Jamalco, a bauxite mining and alumina refining operation in Jamaica. Century produces standard-grade primary aluminum and value-added products such as billet and foundry alloys, and supplies alumina from Jamalco and other agreements to support its smelters. Grundartangi produces low‑carbon Natur-Al aluminum, and Grundartangi and the corporate headquarters hold ASI certifications. Century reports a single consolidated operating segment.

Facilities, capacity, and 2025 production

• Total primary aluminum production capacity: ~770,000 tonnes per year (tpy).
• 2025 primary aluminum production: ~638,000 tonnes.

Grundartangi (Iceland)

• Ownership: 100% of Nordural Grundartangi ehf.
• Capacity: ~320,000 tpy.
• 2025 production: ~260,000 tpy.
• October 2025 electrical equipment failure reduced output by about two‑thirds; full restoration targeted by end of April 2026.
• Vlissingen supplies 93%–98% of Grundartangi’s carbon anode requirements.

Sebree (Robards, Kentucky, USA)

• Capacity: ~220,000 tpy.
• 2025 production: ~217,000 tpy.

Mt. Holly (Goose Creek, South Carolina, USA)

• Capacity: ~230,000 tpy.
• 2025 production: ~161,000 tpy.
• Remaining curtailed capacity being restored with full production aimed by June 2026.
• Extended service agreement with Santee Cooper through 2031 to support the restart.

Vlissingen (Netherlands) carbon anode facility

• Capacity: ~161,000 tpy.
• Primary purpose: supply anodes to Grundartangi.

Jamalco (Jamaica) — bauxite mining and alumina refining

• Ownership: Century 55% (Government of Jamaica minority partner through CAP).
• Jamalco alumina capacity: ~1.4 million tpy; Century’s share: ~770,000 tpy.
• 2025 Jamalco alumina production: ~1.0 million tonnes; 2024 production: ~1.1 million tonnes.
• Alumina sales to Century smelters in 2025: about 320,000 tonnes (≈31% of Jamalco’s production).

New Smelter Project (Inola, Oklahoma)

• Joint development with Emirates Global Aluminium (EGA).
• Proposed capacity: 750,000 tpy.
• Ownership if built: EGA 60%, Century 40%.
• Construction to begin after detailed engineering and final investment decisions; funding and regulatory approvals required.

Sales, customers, and pricing

• Customer concentration: In 2025, about 54.0% of consolidated net sales came from Glencore plc and its affiliates.
• 2026 arrangements: Agreements in place to sell a substantial portion of 2026 production to Glencore; remaining sales expected to be concentrated among a small number of customers under short‑term contracts.
• Glencore beneficially owns 36.4% of Century’s outstanding common stock.
• Pricing components: base LME price plus regional premiums (Midwest premium in the U.S., European Duty Paid premium in Europe) and any value‑added product premiums. Century uses fixed‑price contracts, LME‑linked pricing, and other hedging strategies to manage price exposure.

Raw materials and key supply arrangements

• Jamalco supply: Century received about 320,000 tonnes of Jamalco alumina in 2025 (roughly 31% of Jamalco’s production). Jamalco capacity and supply support Century’s upstream diversification.
• Principal alumina supply agreements:
  • Glencore: ~500,000 tpy through December 2028 (LME‑linked pricing).
  • Concord Resources Ltd.: ~540,000 tpy through December 2029 (fixed, LME‑linked, and API‑linked components).
• Electrical power and energy contracts:
  • Grundartangi: power supplied by Landsvirkjun, Orkuveita Reykjavíkur (OR) and HS Orka; contracts extend through 2036 with variable or LME‑linked pricing components.
  • Sebree: power supplied by Kenergy under a market‑based contract through May 31, 2028.
  • Mt. Holly: power supplied by Santee Cooper through December 31, 2031 (service‑based rates).

People

• Employees (as of December 31, 2025): 2,906 total
  • United States: 1,324
  • Jamaica: 857
  • Iceland: 636
  • Netherlands: 89

Strategy, sustainability, and competitive position

Century focuses on primary aluminum production with opportunities for internal growth and expansion. Vertical integration through Jamalco secures upstream bauxite and alumina supply. The company offers low‑carbon Natur‑Al produced in Iceland and maintains ASI certifications for Grundartangi and its corporate headquarters. Century’s operations are positioned close to major U.S. and European markets and benefit from favorable tariff environments. Key industry risks include aluminum price volatility, energy costs, supply disruptions, project execution risks for new capacity, customer concentration, currency and regulatory exposure, cybersecurity, and environmental compliance.

Recent developments

• January 26, 2026: Announced joint development agreement with Emirates Global Aluminium for the Inola, Oklahoma smelter (60% EGA / 40% Century) with 750,000 tpy capacity.
• February 2, 2026: Sold Hawesville, Kentucky smelter property to a Terawulf, Inc. affiliate for $200 million in cash and a 6.8% non‑dilutive equity interest in a Terawulf data center project. Proceeds are expected to fund domestic capacity expansion, the Mt. Holly restart, and new smelter investments.

Summary

Century Aluminum is a multi‑continental primary aluminum producer with three smelters, a carbon anode plant, and a majority stake in Jamalco. The company combines primary aluminum production and value‑added products with upstream alumina integration, a low‑carbon product line from Iceland, and a concentrated customer base. Century is restoring curtailed capacity at Mt. Holly, pursuing a large new smelter project with EGA, and managing supply and pricing through long‑term contracts and hedging.