The International Energy Agency (IEA) has sharply downgraded its outlook for global oil demand this year after the oil supply shock caused by the Iran war caused a sudden decrease in the demand for crude.
In its latest Oil Market Report, released Wednesday, the Paris-based agency said global oil demand growth has weakened substantially from the optimistic forecasts it published at the start of the year.
The revised outlook marks another step in a series of downward revisions that have transformed expectations for the oil market this year. The body now expects oil demand to contract rather than expand, a dramatic shift from its January forecast, when it projected global demand growth of roughly 930,000 barrels per day (bpd) in 2026.
By February, the agency had already reduced that estimate to 850,000 bpd, and by March it cut the forecast again to 640,000 bpd as higher prices and the blocking of the Strait of Hormuz weighed on consumption.
The most significant downgrade took place in the spring. In its April report, the IEA projected that global oil demand would decline by 80,000 bpd on average in 2026, compared with an earlier expectation of growth. A month later, the agency deepened that assessment, forecasting a year-over-year contraction of about 420,000 bpd and estimating that demand would be roughly 1.3 million bpd lower than its pre-conflict projections.
The IEA has repeatedly warned that higher crude prices and transportation disruptions are suppressing fuel consumption, particularly in transportation and industrial sectors. Despite weaker demand, the agency believes supply growth remains relatively robust, creating the potential for a significant surplus once geopolitical disruptions ease.
The agency's latest long-term assessment projects global oil supply could increase far faster than demand in 2027, setting the stage for one of the largest surpluses in recent years. The agency forecasts supply growth of about 8 million bpd next year, compared with demand growth of roughly 2 million bpd.
The IEA's view contrasts with forecasts from the Organization of the Petroleum Exporting Countries (OPEC), which remains more optimistic about oil demand. OPEC this month lowered its own growth forecast but still expects global oil demand to increase by about 970,000 bpd in 2026.
Meanwhile, governments and energy companies are closely monitoring inventory levels. Earlier this month, the IEA warned that global stockpiles could fall to critically low levels before peak summer demand if inventory draws continue at current rates. However, any prolonged recovery in Middle Eastern production could quickly reverse that trend and push markets back into surplus.
