The International Energy Agency released its March 2026 Oil Market Report on Thursday, and it is the most alarming edition the agency has published in its five-decade history. The report, released on March 12, documents in clinical detail what markets have been pricing in chaos: the war in the Middle East has created the largest oil supply disruption ever recorded, Brent crude came within touching distance of $120 per barrel, and the emergency measures taken so far are not enough to fill the hole.
Here is everything the IEA said.
The Headline: Biggest Supply Disruption in History
The IEA’s opening line leaves no room for interpretation. The war in the Middle East is creating the largest supply disruption in the history of the global oil market. The Strait of Hormuz — which handled approximately 20 million barrels per day of crude and product flows before the conflict began on February 28 — has been reduced to a trickle. Gulf countries have cut total oil production by at least 10 million barrels per day. Global oil supply is projected to fall by 8 million barrels per day in March alone.
For context: the Arab oil embargo of 1973, previously considered the benchmark for oil supply shocks, removed approximately 5 million barrels per day. The current disruption is double that magnitude and it happened in days rather than months.
What Has Happened to Oil Prices
Brent crude futures surged to within touching distance of $120 per barrel immediately following the U.S.-Israeli strikes on Iran on February 28 — the trigger event for the current crisis. Prices have since eased, with Brent at approximately $92 per barrel at the time the IEA published its report on March 12. That represents a $20 per barrel increase since hostilities began — a sustained shock rather than a spike that faded.
The IEA notes that even bigger price increases have occurred across product markets — jet fuel, diesel and LPG — where supply disruptions are more acute and substitution options are more limited than in crude.
Why Gulf Producers Are Shutting In Oil They Could Be Producing
The IEA explains a mechanism that is not obvious from price charts alone. Gulf producers are not cutting output because of a political decision or a strategy shift. They are cutting because their storage tanks are filling up and ships are not coming to collect the oil.
With few vessels currently able or willing to load cargoes at Gulf ports — due to war risk insurance refusals, crew safety concerns and Iranian threats — export terminals are backing up. When onshore storage is full and there is nowhere to send production, the only option is to reduce or halt output entirely. The IEA estimates at least 8 million barrels per day of crude is shut in, with a further 2 million barrels per day of condensates and natural gas liquids also offline.
Major supply reductions are confirmed in Iraq, Qatar, Kuwait, the UAE and Saudi Arabia. Saudi Arabia, which was producing 10.4 million barrels per day in February, has 1.71 million barrels per day of effective spare capacity it cannot currently deploy. The UAE has 640,000 barrels per day sitting idle. Iraq has 360,000 barrels per day it cannot move. The oil exists. The route to market does not.
The Refining Crisis Inside the Supply Crisis
Beyond crude production, the IEA flags a second layer of disruption that is getting less attention than it deserves. Gulf producers exported 3.3 million barrels per day of refined products and 1.5 million barrels per day of LPG in 2025. Both flows have effectively stopped.
More than 3 million barrels per day of refining capacity in the region has already shut due to attacks and the absence of viable export outlets. A further 4 million barrels per day of refining capacity is at risk. Export-oriented refineries cannot function when exports are impossible — product storage tanks fill, runs are cut, and facilities shut down entirely.
The IEA specifically identifies diesel and jet fuel as the most vulnerable product markets, noting limited flexibility elsewhere in the world to increase output quickly enough to compensate for the Gulf’s absence. This assessment is consistent with what markets have already shown — jet fuel prices set an all-time record earlier this month, and China’s decision to suspend refined fuel exports simultaneously removed one of the few remaining alternative supply sources.
LPG, Petrochemicals and the Cascade Into Everyday Life
The IEA’s report gives specific attention to LPG — liquefied petroleum gas used for cooking and heating — flagging India and East Africa as particularly exposed to supply disruptions. This is playing out in real time in India, where cylinder prices have already risen sharply and induction cooktops are selling out nationwide as households switch to electric cooking alternatives.
The report also notes that plunging LPG and naphtha supplies are already forcing petrochemical plants globally to curb polymer production — meaning plastics, packaging and manufactured goods industries are beginning to feel the supply shock in their input costs. The cascade from a closed strait into a petrochemical plant in Southeast Asia or a packaging manufacturer in Europe is not immediate, but the IEA is signalling it is already beginning.
Demand Is Also Falling — But Not Fast Enough to Help
The IEA has cut its global oil demand growth forecast for 2026 by 210,000 barrels per day to 640,000 barrels per day year on year. The demand reduction comes from two sources: widespread flight cancellations across Middle East airports and their knock-on effects on hubs elsewhere, which have materially reduced global jet fuel consumption; and the broader demand destruction that high oil prices and deteriorating economic confidence produce across the full spectrum of oil products.
The IEA estimates the demand reduction during March and April will be approximately 1 million barrels per day compared to previous forecasts. That sounds significant until compared against the 8 to 10 million barrels per day of supply that has been removed from the market. Demand falling by 1 million barrels per day does not offset supply falling by 8 million barrels per day. The net balance remains deeply in deficit.
The Emergency Reserve Release: What It Does and Does Not Do
On March 11 — one day before the IEA published this report — member countries unanimously agreed to release 400 million barrels of emergency oil reserves to the market. The IEA describes this as an unprecedented coordinated action. Global observed oil inventories stand at 8.2 billion barrels, their highest level since February 2021, with OECD countries holding roughly half, Chinese crude stocks accounting for 15%, and oil on water representing 25%.
The IEA’s own language about the release is carefully chosen. It is described as a significant and welcome buffer. It is also explicitly described as a stop-gap measure in the absence of a swift conflict resolution. The report does not claim the reserve release solves the supply problem. It says it bridges time.
The mathematics support that caution. At current disruption levels of 8 to 10 million barrels per day of missing supply, 400 million barrels of reserve releases cover approximately 40 to 50 days of the supply gap — assuming the releases happen at maximum speed, which they do not. Spread over the standard 120-day drawdown period, the release rate covers a fraction of daily losses.
What Ends This and What the IEA Is Watching
The IEA is explicit about the single most important variable in the entire oil market outlook: the duration of disruptions to shipping through the Strait of Hormuz. Not the conflict itself. Not the political negotiations. The shipping. Adequate insurance mechanisms and physical protection for vessels transiting the Strait are identified as the keys to resumption of flows.
This is a precise and important distinction. Even if a ceasefire were announced tomorrow, the Strait would not immediately reopen to normal tanker traffic. Insurance underwriters need confidence that the risk is genuinely over before war risk premiums return to navigable levels. Shipping companies need crew members willing to transit. Cargo owners need assurance that their vessels will not be targeted. All of that takes time even after any political resolution.
The IEA’s full-year 2026 supply estimate — a rise of just 1.1 million barrels per day globally, entirely from non-OPEC producers — assumes some normalization of Hormuz flows over the course of the year. If that normalization is delayed, the annual average gets worse with each passing week.
The March 2026 Oil Market Report is the most consequential document the IEA has published since the agency was created in the wake of the 1973 oil crisis. It was created precisely for moments like this one. What it is saying, in the careful language of international energy institutions, is that the world has not seen anything like this before — and the tools built to manage energy crises are being stretched in ways they were not designed to handle.
Source: IEA Oil Market Report, March 2026, published March 12, 2026.