IEA Cuts 2026 Oil Demand and Supply Forecasts, Sees Market Swing from Wartime Shortage to Surplus by 2027
The International Energy Agency sharply lowered its 2026 oil demand and supply forecasts in its June Oil Market Report, published on 17 June 2026, describing a market in the process of swinging from an acute wartime shortage toward a sizeable surplus by 2027. The report, which extended its forecast horizon to 2027 because of the conflict in the Middle East, paints a picture of severe near-term disruption giving way to a looser, better-supplied market next year.
Demand Destruction on a Large Scale
The agency now expects global oil demand to decline by 1.1 million barrels per day (mb/d) year-on-year in 2026, a downgrade of 700,000 b/d from its May report. The revision reflects the scale of demand destruction caused by the regional conflict and the surge in fuel prices that accompanied it. The IEA noted that second-quarter 2026 deliveries plunged by about 5 mb/d year-on-year, as higher pump prices and disruptions to product availability curbed consumption across several markets.
Crucially, the agency expects this weakness to be temporary rather than structural. It projects demand growth to recover to around 2 mb/d in 2027 as prices normalise, fuel availability improves and economic activity stabilises, underscoring that the 2026 contraction is a shock-driven dip rather than the start of a sustained decline in oil use.
Supply to Fall Sharply in 2026, Then Surge in 2027
On the supply side, the IEA expects global output to fall by 3.9 mb/d on average in 2026 to 102.4 mb/d, reflecting the disruption to regional production and exports during the conflict. May output fell to 94.5 mb/d, down 600,000 b/d on the month and some 13.6 mb/d below pre-conflict levels — a measure of how severely the war curtailed flows at its peak.
The agency then sees supply rebounding by about 8 mb/d to 110.3 mb/d in 2027 as disruptions ease and regional barrels return to the market. This swing — a steep drop followed by an even steeper recovery — is the core of the IEA’s “shortage to surplus” narrative, and it points to a market that could move from acute tightness in 2026 to a meaningful overhang in 2027.
Refining and Inventories
The report also flagged a contraction in refining activity. The IEA forecasts global refinery crude throughputs to fall by 2 mb/d in 2026 to 82 mb/d, consistent with weaker product demand and disrupted crude availability. On the inventory side, the agency recorded a draw of 143 million barrels in observed global oil stocks in May, accelerating sharply from a 74-million-barrel draw in April, while OECD government inventories have fallen by 163 million barrels since the start of the conflict. The heavy drawdown reflects how much the market leaned on stored barrels to bridge the supply gap.
Prices
These dynamics were mirrored in prices. The IEA noted that North Sea Dated crude collapsed by more than US$40 a barrel to around US$82 between May and mid-June, as faltering demand combined with growing expectations of a US–Iran agreement that would restore regional exports. The price slide illustrates how quickly the risk premium built up during the conflict unwound once a diplomatic resolution came into view.
From Shortage to Glut
The interplay between these forecasts is what defines the report’s headline narrative. In 2026, supply is expected to fall further than demand — a 3.9 mb/d drop in output against a 1.1 mb/d decline in consumption — which is why the market stayed tight enough to trigger the heavy inventory draws seen in April and May. By 2027, however, that relationship reverses sharply: a projected supply rebound of around 8 mb/d, set against demand growth of roughly 2 mb/d, mechanically tips the balance toward a substantial surplus. In other words, the same regional disruption that starved the market of barrels in 2026 sets up an overhang in 2027 as that supply comes back faster than demand can absorb it.
The IEA tied much of this to diplomacy. It noted that a US–Iran interim agreement paves the way for a rebound in Middle East exports, which is central to the 2027 supply recovery. But it warned that the return of those barrels is not automatic: demining of affected areas, unresolved transit arrangements and other operational hurdles could delay normalisation, leaving the timing — and therefore the size and arrival of the surplus — uncertain.
Why It Matters for the Gulf
For Kuwait and other GCC producers, the IEA’s outlook frames a more demanding fiscal backdrop. Weaker 2026 demand and a looming 2027 supply surplus point to softer prices over the medium term, even as the recovery in regional exports supports volumes. Gulf budgets, many of which are calibrated to oil revenue, would feel the effect of a sustained price decline, reinforcing the case for continued fiscal discipline and diversification.
At the same time, the projected rebound in regional output is a constructive signal for producers whose infrastructure weathered the conflict, allowing them to recapture market share as flows normalise. The balance between recovering volumes and softening prices will shape the region’s hydrocarbon revenues into 2027.
Outlook and Risks
The IEA cautioned that the path back to normal is not assured. Operational and logistical constraints — including the time needed to restore disrupted routes and reactivate idled capacity — could slow the normalisation of Middle East flows, keeping the market tighter for longer than the headline 2027 surplus implies. The agency’s central message is one of transition: from a demand-and-supply shock in 2026 toward a better-supplied, lower-priced market in 2027, with the speed of that shift dependent on how durably regional stability holds.
Sources: International Energy Agency; CNBC.
