Oil prices surge past $100 per barrel as Strait of Hormuz remains shut

Brent crude crossed $100 per barrel this week for the first time since 2022, driven by the near-complete shutdown of traffic through the Strait of Hormuz. The strait ordinarily carries roughly 20 percent of the world's daily oil supply, approximately 21 million barrels per day, and the combination of Iranian mining, naval interdiction, and tanker operator risk aversion has effectively stopped that flow. The IEA's announcement of a 400 million barrel emergency stockpile release generated a brief dip in futures prices before markets concluded the math did not work.

The math problem is straightforward. The supply shortfall from the Strait closure is estimated at 15 to 20 million barrels per day. The IEA's 400 million barrel release, spread across member countries and delivered over weeks rather than days, covers approximately 20 to 26 days of the shortfall at its lower estimate. Traders who do that calculation do not see a release of that size as a solution. They see it as a delay.

Why the IEA stockpile release had limited effect on prices

The International Energy Agency's Strategic Petroleum Reserve system allows member countries to draw down national emergency stocks and release them to commercial markets. The last major coordinated release was in March 2022, when the IEA authorized 60 million barrels following Russia's invasion of Ukraine, followed by a US-led announcement of 180 million barrels from the Strategic Petroleum Reserve over six months. Brent prices fell from $128 per barrel to approximately $100 per barrel over the following two months before stabilizing, but the Ukraine disruption was a supply route problem, not a physical chokepoint closure of this scale.

The Strait of Hormuz situation is structurally different because the oil physically cannot move. Tanker operators are refusing transits regardless of price premiums because war risk insurance rates have made the passage commercially unworkable for most vessels. Lloyd's of London's war risk underwriters suspended new coverage for Gulf transits in the first week of the conflict, and the few operators willing to attempt the route are demanding premiums that effectively double the cost of a cargo before it reaches a destination port.

The 3 million barrels per day of refining capacity already offline

The price pressure is not coming only from the Strait closure. Attacks on Gulf refining infrastructure have taken more than 3 million barrels per day of regional refining capacity offline since the conflict began on February 28. Saudi Aramco confirmed partial damage to the Ras Tanura refinery complex, which has a nameplate capacity of 550,000 barrels per day, following a drone attack in the second week of the conflict. Kuwait's Mina Al-Ahmadi refinery, which processes 466,000 barrels per day, was shut down as a precautionary measure following credible threat intelligence and has not restarted.

Refinery capacity shutdowns matter differently than crude supply disruptions. Crude oil sitting in storage cannot reach consumers as gasoline or diesel without being processed. When refining capacity is removed from the system at the same time crude supply is disrupted, the downstream effect on product prices is compounded. US gasoline futures rose 18 percent in the two weeks following the start of the Strait disruption, a steeper increase than the crude price move alone would predict.

Which countries are most immediately exposed to the supply shock

Japan, South Korea, and India have the highest dependence on Gulf oil among major economies. Japan imports approximately 90 percent of its oil from the Middle East, with roughly 80 percent of that volume transiting the Strait of Hormuz. Japan's government activated its own national strategic reserve on March 10, authorizing a release of 26 million barrels, the largest domestic reserve release in Japanese history. That covers approximately 17 days of normal Gulf imports.

South Korea imports around 70 percent of its crude from the Gulf and has been in emergency talks with the US, Norway, and Canada about securing alternative supply. Norway's Equinor and Canada's Trans Mountain pipeline system have both received inquiries about accelerating deliveries to Asian buyers, but the logistics of routing tankers around the Cape of Good Hope instead of through the Gulf adds 15 to 20 days of sailing time per voyage, which tightens physical supply availability further even before any pricing discussion.

China, which imports approximately 1.7 million barrels per day from Iran directly and additional volumes from Iraq and the UAE, has the most complex exposure. Chinese state refiners had already been rerouting some Iranian crude through indirect channels before the conflict began, and China has larger strategic petroleum reserves than any other country, estimated at between 900 million and 1.1 billion barrels by S&P Global Commodity Insights. Beijing has not announced a public reserve release and has so far relied on those stockpiles to avoid immediate market purchases at current prices.

What alternative supply sources can realistically cover

Saudi Arabia holds approximately 3 million barrels per day of spare production capacity, but that oil cannot reach markets if the Strait of Hormuz remains closed, since the kingdom's primary export terminals at Ras Tanura and Ju'aymah feed directly into the Gulf. The Trans-Arabian Pipeline, known as Tapline, which once carried Saudi crude overland to the Mediterranean, was decommissioned in 1990. Saudi Aramco's East-West Pipeline to the Red Sea port of Yanbu has a capacity of 5 million barrels per day and is currently the only viable export route for Saudi crude that does not require Strait transit.

The UAE's Abu Dhabi Crude Oil Pipeline, completed in 2012 specifically to provide a Strait bypass, runs 380 kilometers from Habshan to the Fujairah terminal on the Gulf of Oman. It has a capacity of 1.5 million barrels per day. Combined with the Saudi Yanbu route, these two pipelines can move approximately 6.5 million barrels per day to non-Strait export points. Against a daily shortfall of 15 to 20 million barrels, that coverage is meaningful but insufficient to stabilize the market on its own.

Downstream effects on fuel prices in consuming countries

US retail gasoline prices averaged $4.21 per gallon nationally on March 14, 2026, according to the American Automobile Association, up from $3.21 per gallon on February 27, the day before the conflict began. That $1.00 per gallon increase over 15 days is the fastest sustained rise since the COVID-19 recovery period of 2021. Diesel prices, which more directly affect freight costs and therefore consumer goods prices, rose from $3.68 to $4.78 per gallon over the same period.

Airlines are acutely affected. Jet fuel, which accounts for 20 to 30 percent of airline operating costs under normal market conditions, has risen in step with crude. Delta Air Lines and United Airlines both issued guidance revisions within the past week, warning that fuel cost increases would materially affect first-quarter 2026 earnings. Delta estimated that each $10 per barrel increase in Brent crude adds approximately $400 million to its annual fuel bill at normal consumption levels.

The White House authorized an emergency release of 30 million barrels from the US Strategic Petroleum Reserve on March 12, bringing the total US contribution to the coordinated IEA release to 30 million barrels. The SPR currently holds 395 million barrels following previous drawdowns, down from its historical high of 727 million barrels in 2009. A further 60 million barrel release has been discussed internally but not authorized, and any decision will depend on whether Strait traffic shows any signs of resuming in the coming days.