Oil Market Report – March 2026 – Analysis – IEA
The war in the Middle East is creating the largest supply disruption in the history of the global oil market. With crude and oil product flows through the Strait of Hormuz plunging from around 20 mb/d before the war to a trickle currently, limited capacity available to bypass the crucial waterway, and storage filling up, Gulf countries have cut total oil production by at least 10 mb/d. In the absence of a rapid resumption of shipping flows, supply losses are set to increase.
Global oil supply is projected to plunge by 8 mb/d in March, with curtailments in the Middle East partly offset by higher output from non-OPEC producers, Kazakhstan and Russia following disruptions at the start of the year. While the extent of losses will depend on the duration of the conflict and disruptions to flows, we estimate global oil supply to rise by 1.1 mb/d in 2026 on average, with non-OPEC producers accounting for the entire increase.
The conflict is also having a significant impact on global product markets, with export flows through the Strait at a near standstill. Gulf producers exported 3.3 mb/d of refined products and 1.5 mb/d of LPG in 2025. More than 3 mb/d of refining capacity in the region has already shut due to attacks and a lack of viable export outlets. Runs elsewhere will be increasingly limited due to feedstock availability.
