CHARTS: How the Sulphuric Acid Crunch Is Driving up Critical Minerals Costs

Why It Matters

Higher sulphuric‑acid costs inflate the price of lithium and nickel, key battery inputs, threatening the economics of the energy‑transition supply chain and potentially slowing EV rollout. The disruption also highlights geopolitical vulnerability of critical‑mineral production to Middle‑East logistics.

Key Takeaways

• Sulphuric acid cost now 11% of lithium production, up from 3%
• HPAL nickel costs now 42% sulphur, nearly double pre‑conflict level
• Spot acid prices hit $380/tonne in Indonesia, $440/tonne in Chile
• Half of seaborne sulphur passes through Strait of Hormuz, a chokepoint
• US domestic sulphur capacity may shield its battery supply chain

Pulse Analysis

The surge in sulphuric‑acid prices stems from a perfect storm of geopolitical tension and logistical bottlenecks. The closure of the Strait of Hormuz, a critical artery for more than half of global seaborne sulphur, has curtailed physical supply while Iran‑related sanctions have limited alternative sources. Coupled with China’s unofficial export curbs, refiners worldwide are scrambling for scarce acid, driving spot prices to historic highs. This volatility underscores how energy‑transition commodities are increasingly exposed to flashpoints far beyond traditional mining jurisdictions.

Lithium and nickel processors feel the pinch most acutely. Benchmark’s data shows sulphuric acid’s share of lithium‑chemical costs jumping from 3% to 11%, overtaking energy as the dominant cost driver. For HPAL nickel, the sulphur component now represents 42% of total expenses, up from 26% before the conflict. These cost escalations translate into higher battery‑grade lithium carbonate prices—already up 65% year‑to‑date in China—and could force producers to trim output or seek less efficient processing routes, tightening supply for electric‑vehicle manufacturers.

The broader market implication is a renewed focus on supply‑chain resilience. Nations with domestic sulphur and acid production, notably the United States, are better positioned to insulate their battery industries from external shocks. Meanwhile, investors and policymakers are likely to prioritize diversification of feedstock sources, strategic stockpiles, and investment in alternative leaching chemistries. As the energy transition accelerates, managing the sulphuric‑acid bottleneck will be essential to keep battery costs on a downward trajectory and sustain global EV adoption rates.