Smelting Capacity Emerges as a Key Supply Chain Challenge

Published: Jun 3, 2026 12:03
As the United States continues to strengthen critical minerals security, domestic manufacturing, and copper supply chain resilience, limited smelting capacity is increasingly emerging as a key challenge. The country currently operates only a handful of primary copper smelters, while low treatment and refining charges (TC/RCs) and rising environmental compliance costs continue to pressure profitability. Alongside efforts to expand domestic mining and manufacturing capacity, maintaining existing smelting operations and securing refined copper supply will remain critical to the long-term success of U.S. copper supply chain strategy. Continued pressure on the smelting sector could limit the country's ability to reduce reliance on imported refined copper in the near term.

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