Why is diesel so much more expensive?

As of March 2026, the blockade of the Strait of Hormuz has created a massive economic divergence. While Gulf producers are "choked off," entities in "Safe Zones"—primarily in the US, Guyana, Canada, and the North Sea—are collecting what economists call geopolitical rent. This is not profit earned through innovation, but a "tollgate tax" harvested from global chaos. Here is a summary of how these unaffected individuals and institutions are cashing in: 1. The "Instability Bonus" (War Premium) When supply from the Middle East (20% of global oil) is stranded, the price of every barrel produced outside that zone automatically skyrockets. The Mechanism: Global benchmarks like Brent have surged to $115/barrel. Producers in West Texas or Guyana, whose production costs might only be $30–$40, are pocketing an "instability bonus" of nearly $80 per barrel. The Beneficiaries: Shareholders of major US upstream players (e.g., ConocoPhillips, EOG Resources) and private magnates like Harold Hamm, whose assets are physically removed from the conflict but sell at the inflated global price. 2. Diesel Margin Inflation (Refining Surcharge) The blockade doesn't just stop crude; it stops refined products. With global refineries starved for Gulf crude, those with "flexible" refineries in the West are seeing profit margins explode. The Mechanism: This is the "Diesel Margin." Because supply is tight, the gap between the cost of crude and the price of diesel at the pump has widened to record levels. The Beneficiaries: Complex refiners in the US Gulf Coast and Europe. They are processing "cheap" domestic or Atlantic crude and selling the resulting diesel at "war prices," effectively charging a refined-product toll to the global haulage and shipping industries.