Iran Conflict Upends Jet Fuel, Diesel, and Marine Fuel Supplies

The escalating conflict in Iran, which erupted on February 28, 2026, involving U.S. and Israeli forces against Iranian targets, has sent shockwaves through global energy markets. What began as targeted strikes has morphed into a full-scale disruption of one of the world’s most critical energy chokepoints: the Strait of Hormuz. This narrow waterway, through which roughly 20% of global oil supplies and a significant portion of refined products transit, is now effectively paralyzed by Iranian threats, retaliatory attacks, and insurance pullbacks.

• Jet Fuel Crunch: Prices in key hubs like Singapore have exploded by 72% to a record $225.44 per barrel, with European prices topping $1,500 per tonne in some cases.
  Global supplies are tightening fast, with the U.S. Energy Information Administration (EIA) revising its 2026 jet fuel price forecast upward sharply due to the Hormuz closure, which blocks nearly 25% of global jet fuel exports. Airlines are already feeling the pinch: fuel accounts for up to 40% of operating costs, and shortages could lead to flight cancellations and fare hikes of 10-20% in the coming weeks. Low inventories exacerbate the issue—jet fuel storage is specialized and often limited, leaving little buffer against disruptions.
• Diesel Squeeze: Diesel prices have surged 28% in the U.S. alone since the war began, reaching $4.83 per gallon. Globally, the loss from Hormuz disruptions equates to 3-4 million barrels per day (bpd), or 5-12% of total diesel supply. This is hitting truckers, farmers, and manufacturers hard. In agriculture, for instance, the timing couldn’t be worse—just ahead of the 2026 planting season, U.S. farmers are facing doubled fuel costs that could inflate food prices by 5-10%. Military demand is also spiking, as diesel powers tanks, ships, and generators in the conflict zone, further straining civilian supplies.

Marine Fuel Disruptions: Bunker fuel for ships has seen freight rates for very large crude carriers (VLCCs) jump 94% in a single day.

combined with secondary effects like Asian refineries (e.g., India’s Mangalore Refinery) suspending exports to prioritize domestic needs.

The crisis exposes deep vulnerabilities in the interconnected global fuel ecosystem. Refining capacity is concentrated in a few regions, and just-in-time inventory models leave little slack. Here’s how the problems are manifesting:

• Supply Chain Bottlenecks: The Hormuz closure has halted traffic for most Western ships, though Chinese and Russian vessels reportedly continue under exemptions.

  This selective blockade—achieved more through fear and insurance cancellations than physical barriers—has led to a backlog of vessels and forced reroutes, inflating costs across the board. Airspace closures in Gulf states have grounded thousands of flights, compounding jet fuel demand pressures. Price Volatility and Inflation Risks: Brent crude has spiked from $70 to over $110 per barrel, with projections hitting $150-200 if disruptions persist. This feeds into refined products, where jet fuel margins have ballooned to over $100 per barrel.

  Broader economic fallout includes potential stagflation: central banks like the Fed and ECB face a dilemma between hiking rates to curb inflation or risking recession.

  Food costs could rise due to higher diesel for transport, with analysts warning of a 5-10% increase in global grocery bills.
• Regional Disparities: Europe and Asia are hit hardest, lacking the U.S.’s domestic production buffers. European LNG stocks are critically low, and diesel imports from the Middle East are slashed.
  In the U.S., refiners are ramping up output to 1.83 million bpd of jet fuel, but net imports are forecasted to drop to -100,000 bpd as global gaps widen.

The Biggest Issues: Where the Pain Points Are Concentrated

While the crisis is global, certain flashpoints amplify the damage:

1. Strait of Hormuz Blockade: This is ground zero, disrupting 20 million bpd of crude and refined flows. Iranian drone and missile strikes on nearby infrastructure, plus threats to shipping, have insurers pulling coverage, effectively shutting down operations for major carriers like Maersk and MSC.
2. Refinery Attacks and Export Bans: Direct hits on production facilities in Iran and its neighbors have slashed output. Asian exporters like China and Thailand are halting shipments to secure domestic supplies, while India’s MRPL has declared force majeure on gasoline exports.
3. Low Inventories and Military Demand: Jet fuel’s thin stockpiles make it especially prone to shortages. Heightened military use in the region—diesel for ground ops, jet fuel for airstrikes—diverts supplies from civilian markets.
4. Coupled with Houthi Disruptions: Iran’s allies in Yemen have blocked the Bab el-Mandeb Strait, compounding Red Sea issues and forcing even more reroutes.
   These issues threaten a cascade: if diesel shortages hit trucking, supply chains for everything from food to manufacturing grind to a halt, potentially triggering a global slowdown with GDP contractions of 1.5-3% in major economies.

Recovery hinges on the conflict’s duration—there’s no quick fix without a ceasefire. The International Energy Agency (IEA) has released a record 400 million barrels from strategic reserves to bridge the gap, which could stabilize prices temporarily.

• Short-Term (1-4 Weeks): If hostilities de-escalate immediately (e.g., via U.S. statements signaling an end), traffic could resume cautiously, with prices easing 20-30% as backlogged tankers deliver. However, insurance and security concerns might delay full normalization.
• Medium-Term (1-3 Months): Post-ceasefire, refineries could ramp up, but damaged infrastructure (e.g., attacked facilities) might take 4-6 weeks to repair. Global refining adjustments—U.S. and European plants boosting middle distillates—could fill gaps, but lingering export bans from Asia might prolong diesel and marine fuel tightness.

Long-Term Risks: If the war drags into summer, supplies might not fully recover until late 2026, with prices staying elevated 50% above pre-conflict levels. Sustained disruptions could push oil to $180-200 per barrel, embedding inflation for years.