According to the IEA, why is the Strait of Hormuz blockage described as the 'largest disruption in history' to oil supply?

The IEA calls the Strait of Hormuz blockage the 'largest disruption in history' to oil supply because global oil supply was slashed by 10.1 million barrels/day in March to 97.1 million barrels/day, driven by attacks on Middle East energy infrastructure and the halt of most tanker traffic through the Strait; this led to an overall loss in oil exports exceeding 360 million barrels/day for March — far surpassing disruptions from production caps or infrastructure damage alone — and is projected to rise to 440 million barrels/day in April.

What does the IEA identify as the single most important factor for easing global energy pressure, and what is its outlook on that scenario?

The IEA states that 'resuming flows through the Strait of Hormuz remains the single most important variable in easing the pressure on energy supplies, prices and the global economy'; its projections assume regular oil and gas deliveries from the Middle East will resume by mid-year — though not at pre-conflict levels — but it explicitly acknowledges this assumption 'could be too optimistic', warning that 'energy markets and economies around the world need to brace for significant disruptions in the months to come' if flows do not resume.

IEA Calls Strait of Hormuz Blockage 'Largest Disruption in History' to Oil Supply

Apr 14, 2026

The IEA reports the Strait of Hormuz blockage has caused the largest historical oil supply disruption, slashing global supply by 10.1 million barrels/day. Record crude prices reached $130/barrel as Middle East conflict forces refinery cuts and depletes global inventories.

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