The International Energy Agency has projected a cumulative oil liquids deficit of 900 million barrels by September 2026, even if the US-Iran conflict ends by early June. Global supply has dropped by 12.8 million barrels per day since hostilities began, with output from Strait of Hormuz countries down 14.4 million barrels per day from pre-war levels. The IEA says markets will remain severely undersupplied through the end of the third quarter of next year.
How the numbers break down
According to the IEA's assessment, the supply-demand gap reaches 6 million barrels per day from March to June. Of the 900 million barrel projected deficit, about 400 million could be covered through a coordinated release, leaving 500 million barrels that must be drawn from industry stockpiles. The agency also revised its demand forecast downward: it now expects consumption to drop by 420,000 barrels per day this year, compared to an earlier estimate of an 80,000 bpd decline.
Why the Strait of Hormuz matters
The IEA's base case assumes flows through the Strait of Hormuz will gradually resume from June. But even with that assumption, the market will stay tight well beyond 2026. The deficit barely begins to be offset in October, and restoring inventories to normal levels would require an additional 1 million barrels per day of supply above expected demand growth over the next three years.
Industry watchers see a breaking point
HFI Research said the oil market had already crossed its breaking point by mid-April. The firm warned that logistical bottlenecks could slow the pace of any recovery, adding a layer of uncertainty to the IEA's timeline. That warning suggests that even a diplomatic resolution may not bring quick relief, because moving crude back through disrupted supply chains takes time.
With 500 million barrels still needed from industry stock draws, the question is whether producers and traders can maintain that pace for months. The IEA's numbers leave no room for error, and the coming weeks will test how much slack the system really has.
