U.S. Projects Iran War Oil Supply Disruption to Extend Through 2027

Nashnova编辑部
Published todayAbout 7 min read

The EIA's latest forecast projects oil supply disruptions from the U.S.–Iran war lasting through end-2027, with a gap of roughly 600,000 barrels per day; Strait of Hormuz throughput has plunged over 70% from pre-war levels, keeping global fuel prices and inflation under sustained pressure.

01

How much oil has the Strait of Hormuz actually lost?

Pre-war (Q4 2025), the strait carried roughly 21.6 million barrels per day. By Q2 this year, that figure fell to about 4.9 million — a drop of over 70%.
Energy Secretary Chris Wright cited a slightly higher number: roughly 9 million bpd over the past week — still less than half the pre-war level.
This means → even the most optimistic reading puts strait capacity at about 40% of normal. Global crude logistics remain in a semi-blocked state.
02

Why are Middle Eastern producers forced to cut output?

The EIA estimates regional shut-ins narrowed to about 5.5 million bpd in July, down from 7.5 million in June — but projects a rebound to 6.6 million bpd in Q3.
In plain terms = the oil is being pumped, but it cannot leave. Export routes are blocked and storage is nearly full, so producers have no choice but to shut wells.
The EIA also assumes Houthi threats against Saudi tankers in the Bab el-Mandeb strait have not yet caused additional shut-ins. If those threats escalate, actual losses could be larger.
03

What does this mean for fuel prices and inflation?

The EIA raised its 2026 gasoline and diesel price forecasts by 3.7% and 5.4%, respectively, and lifted its 2027 retail gasoline outlook by 6.5% versus the prior month.
The ceasefire "memorandum of understanding" signed earlier has done little to ease the energy shock. Iran–Oman talks on reopening the strait remain inconclusive.
This means → six months into the conflict, consumers worldwide face not a short-term spike but a fuel-price upcycle stretching into 2027.
04

Why can't the market even see the real numbers?

Many vessels have switched off their AIS — automatic identification system, the transponder that broadcasts a ship's position — making real-time strait throughput impossible to track precisely.
Estimates among market participants diverge significantly; the energy secretary's figure and the EIA's model output already disagree.
This reflects a deeper problem: the opacity itself has become the energy market's single largest uncertainty. How wide the supply gap really is — and how long it will last — remains unanswerable.

Content is for reference only, not financial advice.