How much did the IEA cut its 2026 oil demand forecast?

By 940,000 b/d versus its August 2026 report, to a 2.5 million b/d annual decline — global consumption is now projected at 102.44 million b/d, down from 103.29 million b/d, per the IEA's September 2026 Oil Market Report.

Why is the IEA now describing a wider deficit instead of a surplus?

Because IEA cut supply by more than it cut demand this month: world oil supply is now projected at 100.7 million b/d for 2026, 1.3 million b/d below last month's estimate, which pushes the 2026 balance to a 1.7 million b/d deficit and defers a return to surplus until 2027.

What is driving the disruption to oil flows?

The IEA points to the protracted US-Iran diplomatic standoff and renewed attacks in the Gulf and at the Red Sea's Bab el-Mandeb chokepoint, which it says continue to hamper the normalization of regional oil flows and are hitting diesel and petrochemical feedstock supply hardest.

IEA Deepens 2026 Oil Demand Cut to 2.5 Million B/D as Iran

The IEA's September Oil Market Report trims 2026 demand by a further 940,000 b/d while cutting supply even harder, widening the projected deficit to 1.7 million b/d. This is analysis of what moved the barrel, not advice.

The International Energy Agency's September 2026 Oil Market Report deepens its 2026 global demand-decline forecast by 940,000 b/d to 2.5 million b/d, a drop it says rivals the four largest demand shocks in 60 years. IEA also cut 2026 supply further, widening the deficit to 1.7 million b/d, citing the Iran standoff and Red Sea attacks near Bab el-Mandeb.

The Gulf Barrel Desk September 13, 2026 Updated September 13, 2026 · 3 min read

IEA cut its 2026 global oil demand forecast by 940,000 b/d to a 2.5 million b/d annual decline, the deepest since 2020.
Supply was trimmed even more, by 1.3 million b/d to 100.7 million b/d, widening the projected 2026 deficit to 1.7 million b/d.
IEA attributes the disruption to the protracted US-Iran standoff and renewed attacks in the Gulf and at the Red Sea's Bab el-Mandeb chokepoint.
Diesel and Asian petrochemical feedstocks are absorbing the steepest losses; full Middle East supply recovery is now pushed to 2027.
IEA warns further demand cuts are possible in coming months as commercial inventory buffers keep depleting.

The International Energy Agency (IEA) deepened its 2026 oil-demand forecast cut by 940,000 b/d to a 2.5 million b/d annual decline in its September 2026 Oil Market Report, a drop it says rivals the four largest demand shocks of the past 60 years (International Energy Agency, Sep. 11, 2026). IEA cut supply even harder, widening the projected 2026 deficit to 1.7 million b/d and pushing a full Gulf recovery to 2027, as the Iran standoff and Red Sea attacks keep disrupting flows. This is analysis of what moved the barrel, not advice.

The Deficit Behind The Cut

IEA cut supply by more than it cut demand this month, trimming its 2026 world oil-supply outlook by 1.3 million b/d to 100.7 million b/d — 5.7 million b/d below last year's level (International Energy Agency, Sep. 11, 2026). That widens the projected 2026 balance to a 1.7 million b/d deficit, up from 1.3 million b/d in August, and defers a full recovery in Middle East supply to 2027, IEA said. Global demand is now pegged at 102.44 million b/d, down from 103.29 million b/d in August.

The US-Iran Standoff and the Red Sea Chokepoint

The IEA attributes the disruption to the protracted US-Iran diplomatic standoff and renewed attacks in the Gulf and at the Red Sea's Bab el-Mandeb chokepoint, which the agency says continue to hamper the normalization of regional oil flows (International Energy Agency, Sep. 11, 2026). Bloomberg reported the same day that IEA warned oil demand may have to fall further still if the conflict drags on (Bloomberg, Sep. 11, 2026). Neither outlet reports a resolution timeline.

Diesel and Petrochemical Feedstocks Absorb the Hit

IEA said the steepest losses are concentrated in middle distillates like diesel and in petrochemical feedstocks, especially for Asian plants, alongside higher fuel prices that are further weighing on consumption (International Energy Agency, Sep. 11, 2026). CNBC's reporting on the same report noted the agency now expects the Middle East supply recovery to slip into 2027 rather than materializing this year (CNBC, Sep. 11, 2026).

What To Watch Next

The pace of the demand decline is set to ease through the year — from 5.3 million b/d in the second quarter to 3.4 million b/d in the third and 2 million b/d in the fourth, per the IEA (International Energy Agency, Sep. 11, 2026). With commercial inventories drawing down roughly 2.8 million b/d between February and August (Rigzone, Sep. 11, 2026), IEA cautioned that further demand cuts may be needed in coming months — a risk to size, not a call to trade, and not advice.

How much did the IEA cut its 2026 oil demand forecast?: By 940,000 b/d versus its August 2026 report, to a 2.5 million b/d annual decline — global consumption is now projected at 102.44 million b/d, down from 103.29 million b/d, per the IEA's September 2026 Oil Market Report.
Why is the IEA now describing a wider deficit instead of a surplus?: Because IEA cut supply by more than it cut demand this month: world oil supply is now projected at 100.7 million b/d for 2026, 1.3 million b/d below last month's estimate, which pushes the 2026 balance to a 1.7 million b/d deficit and defers a return to surplus until 2027.
What is driving the disruption to oil flows?: The IEA points to the protracted US-Iran diplomatic standoff and renewed attacks in the Gulf and at the Red Sea's Bab el-Mandeb chokepoint, which it says continue to hamper the normalization of regional oil flows and are hitting diesel and petrochemical feedstock supply hardest.

IEA Slashes Oil Demand View — Rigzone
Oil Market Report - September 2026 — International Energy Agency
IEA Warns Oil Demand May Have to Fall Further as Iran War Drags — Bloomberg
IEA cuts oil supply forecast as Iran war delays Middle East recovery — CNBC

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