The Simandou iron ore project in Guinea has begun making its presence felt in seaborne markets. The first cargo was shipped in November 2025, and the operation is on track to deliver approximately 20 million tonnes in 2026. The project, jointly developed by Rio Tinto, Chalco (Aluminum Corp of China), and the Guinean government, represents the largest single addition to seaborne iron ore supply in a decade.
Simandou’s ore quality is a key differentiator. With iron content exceeding 65% Fe and very low impurities (alumina and silica), the product commands a premium over the benchmark 62% Fe fines. For Chinese steel mills seeking to optimize sinter plant feed and reduce emissions, high-grade ore becomes increasingly valuable as environmental regulations tighten.
The project’s logistics infrastructure—a 650 km railway to a purpose-built deepwater port—is the largest private infrastructure investment in West Africa. Total project capital expenditure exceeds $20 billion, making it one of the most expensive mining projects ever developed. The high upfront cost means Simandou’s break-even price is estimated at $50–$60/t FOB, competitive with Australian and Brazilian producers.
The supply addition comes at a time when Chinese steel demand is structurally declining. China’s steel output peaked in 2020 at 1.065 billion tonnes and has been declining or flat since. The combination of shrinking demand and new supply is bearish for iron ore prices, with the market expected to shift from structural deficit to structural surplus from 2026 onward.
Simandou’s ramp-up is a structural game-changer for iron ore markets. Buyers should reassess long-term procurement strategies: the era of $100+ iron ore may be ending. For high-quality ore requirements, Simandou’s premium-grade product offers an alternative to Australian and Brazilian supply. Consider testing Simandou material in your blending strategy.