Gulf States Lose $15bn in 13 Days as Hormuz Stays Shut

$15.1 billion. Gone.

Gulf producers have haemorrhaged that figure in energy revenues in less than two weeks — bleeding at $1.2 billion every single day the Strait of Hormuz remains shut. For US drivers already paying $6.50 a gallon in California, that number isn't abstract. For UK households bracing for a fresh energy cap review, it's a countdown.

The strait is not just a shipping lane. Right now, it's the most expensive 21 miles on Earth.

What Happened

The clock started February 28, 2026. Operation Epic Fury — coordinated US and Israeli strikes on Iran — triggered a chain of events that brought the world's most critical energy corridor to a virtual standstill within 72 hours.

The shutdown sequence:

1. February 28 evening: Outgoing tanker traffic through the Strait was still heavy
2. March 1: Traffic dropped to zero — Iran's Revolutionary Guard issued warnings on international distress frequencies
3. War-risk insurance premiums spiked to 0.2–0.4% of ship value per transit → $250,000 more per VLCC passage
4. March 2: Qatar halted LNG production at Ras Laffan, issued force majeure notices
5. March 5: Kuwait announced production cuts; Iraq slashed output by 1.5 million bpd as storage filled
6. By March 10: IEA reported Gulf producers cut at least 10 million bpd — roughly 10% of all global oil output

Brent crude moved from $72.87 before the conflict to $92.69 by March 7 — a 28% weekly surge, the largest single-week gain since April 2020. WTI posted a 35.63% weekly jump — the biggest in the futures contract's entire history dating to 1983.

It took three drone strikes — not a naval blockade — to shut down 20% of the world's oil supply.

The Chain Reaction — Country by Country

Revenue losses since February 28:

Iraq's position is the most precarious. Ninety percent of government revenues depend on oil exports, no sovereign buffer, and no alternative export route. Every day of closure costs Baghdad money it doesn't have.

The LNG angle is the one oil headlines are crowding out. Qatar accounts for the majority of the roughly 20% of global LNG that transits the Strait. QatarEnergy alone has lost $571 million in revenue since halting production on March 2 — and that excludes delays to expansion projects that were planned to supply 40% of new global LNG through 2029.

The Shipping Insurance Problem Nobody Expected

The most important number most coverage is missing: $10.7 billion.

That's Kpler's estimate of the value of crude oil, refined products, and LNG cargoes already loaded onto vessels — paid for, crewed up, sitting at anchor — but physically unable to move. The cargo isn't cancelled. It's trapped.

Iran didn't need a naval blockade. It didn't need mines or anti-ship missiles (though those are allegedly deployed). All it needed was a handful of drone strikes near the strait. Within hours, insurers cancelled war-risk coverage across the corridor. This was an insurance-driven shutdown.

Alternative routes exist on paper:

• Saudi Arabia's East-West pipeline to Yanbu: handles ~17% of normal Hormuz volumes
• UAE's pipeline to Fujairah: similar constraint

Combined, these alternatives handle less than one-fifth of pre-closure throughput. There's no functional substitute for the strait at scale.

What It Costs You

For US consumers:

Americans import only about 2% of oil from the Persian Gulf — but Brent is the global price setter. Higher Brent means higher pump prices. The US national average was tracking close to $4.50/gallon before the conflict; California was already at $6.50 by March 12.

Goldman Sachs raised 2026 US inflation by 0.8 percentage points and trimmed GDP growth to 2.2% under a moderate scenario. Their recession probability raised 5 percentage points to 25%.

For UK consumers:

UK forecourt prices follow Brent benchmark moves with approximately a two-week lag. A 28% Brent surge translates to roughly 18–22 pence per litre more at the pump. For a UK household spending £130/month on energy, Goldman Sachs forecasts approximately £100 more drained from that budget by year-end.

For South Korea:

The counterintuitive worst-case in this crisis: South Korea imports 20% of its gas from the Gulf and was estimated to exhaust LNG reserves in as few as nine days without resupply. The government announced a 100 trillion won ($68B) stabilisation fund to manage soaring energy costs.

The counterintuitive winner:

The US energy sector. American producers don't export through Hormuz. US LNG export capacity is running near maximum — every molecule of global gas supply disruption tightens a market where American exporters benefit directly from higher prices. A sustained Brent above $90 is a windfall for US shale operators with $40–$60 breakeven costs.

The GDP Percentage That Tells the Whole Story

Oxford Economics modelled a scenario where oil averages $140/barrel for two months. Their conclusion: the eurozone, UK, and Japan would contract. The US would face effective economic standstill.

The number that frames everything else: 10%. That's the share of global oil output that vanished almost overnight when Gulf producers cut at least 10 million bpd. Every point of global GDP that depends on energy inputs — manufacturing, transport, agriculture, chemicals — got repriced the moment that figure became visible in the data. Watch whether it moves back below 5% as the closure timeline becomes clearer. If it doesn't, the $15 billion meter keeps running, and the Oxford Economics scenario stops looking like a tail risk.

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