Strait of Hormuz crisis severs one-third of global methanol trade as Iran output collapses

The 2026 Iran war has triggered the most severe supply shock in the history of the global methanol market. Since Iran effectively closed the Strait of Hormuz on March 4 in retaliation for US-Israeli airstrikes, an estimated 18-20 million tonnes per year of Middle East methanol production has been locked out of international trade, representing roughly 18% of global methanol capacity (FACT: S&P Global, March 20, 2026; ICIS, March 13, 2026). The disruption has been called the "heart attack" of the global methanol trade, with the strait handling approximately 35% of all seaborne methanol movements (FACT: SunSirs, March 2026; World Economic Forum, April 2026).

The scale of the production collapse inside Iran is staggering. Before the war, Iran — the world's largest methanol exporter by volume — was producing approximately 23,000 tonnes per day from its massive gas-fed petrochemical complexes. After the blockade and associated operational constraints, that figure has fallen to around 1,200 tonnes per day, a decline of more than 95% (FACT: SunSirs, Middle East Conflict Triggers Global Chemical Supply Crisis, May 2026). Iran's methanol exports, which exceeded 9 million tonnes in 2025, have effectively been halted, with China — the destination for over 50% of Iranian methanol exports — now scrambling for alternative supply sources (FACT: ICIS Supply & Demand Database, March 2026; OPIS, Dow Jones, April 2026).

The crisis extends beyond Iran. QatarEnergy declared force majeure on affected shipments in early March, signalling its inability to fulfil contractual supply commitments (FACT: ChemAnalyst, March 2026). Saudi Arabia and other Gulf Cooperation Council producers face severe logistical constraints as tanker traffic through the Hormuz chokepoint remains heavily restricted. The Middle East exported nearly 14 million tonnes of methanol in 2025, according to ICIS data, making it the single largest supply region for global markets. With these volumes effectively shut in, the entire global methanol supply-demand balance has been thrown into structural deficit.

China has been the most acutely affected buyer. The country relies on imports for approximately 70% of its methanol consumption, and Iranian methanol alone accounted for over half of those import volumes. Chinese port inventories, which started the year at comfortable levels, are now trending toward "below warning thresholds" as Middle East cargoes fail to arrive (FACT: World Economic Forum, April 2026). Domestic methanol plants in China have ramped up production, but the country's coal-to-methanol capacity cannot fully compensate for the loss of cheap, gas-based Iranian supply. The cost differential is substantial: Iranian methanol delivered to Chinese ports was consistently the lowest-cost feedstock for China's massive methanol-to-olefins (MTO) industry before the war.

The outlook for supply normalisation remains bleak. Even under an optimistic scenario where the Strait of Hormuz reopens in the coming weeks, analysts estimate it would take approximately 140 days for normalised methanol flows to resume — accounting for 30 days of security clearance, 30 days to clear shipping backlogs, 25 days of transit to Asian destinations, 10 days of port congestion, and approximately 45 days to restart idled cracking units (FACT: SunSirs, May 2026). This logic suggests that even in the best case, methanol supplies do not normalise before October 2026. More realistic scenarios, including continued skirmishes, insurance constraints, and damaged infrastructure, push the recovery timeline into 2027.

The International Energy Agency has described the Strait of Hormuz disruption as "the largest supply disruption in the history of the global oil market" (FACT: IEA, April 2026; Reuters, April 14, 2026). For methanol — a commodity equally dependent on that same chokepoint — the characterisation is no less apt.