Copper Ore Shortage Dismantles Decades-Old Benchmark Pricing System
A copper ore shortage and surging Chinese smelting capacity are forcing the industry to shift from annual benchmark pricing to spot-market index pricing.
A severe shortage of copper ore is dismantling the traditional benchmark pricing system used by mining companies and smelters to share profits. For decades, a single annual negotiation established the market benchmark for treatment and refining charges (TC/RCs). However, a surge in Chinese smelting capacity paired with scarce ore supplies has driven these charges to record lows and pushed spot market rates into negative territory.
Tongling Nonferrous Group and other smelters warn of deep losses and potential production cuts as margins squeeze. In response, the industry is shifting toward index-based pricing linked to spot markets, a transition previously seen in the iron ore market. In China, the proportion of trade linked to the benchmark has dropped from over 50% two years ago to less than 30% this year.
These market tensions have triggered legal disputes, including arbitration between Teck Resources Ltd. and Sumitomo Metal Mining Co. over whether to apply Chinese or Japanese benchmarks to their supply deals. While mining executives push for prices that reflect spot market levels, smelters continue to struggle with the volatility of the current supply environment.
