Surging Diesel Costs Pressure UK and California Farmers

Agricultural producers in the United Kingdom and California are experiencing severe financial pressure as diesel costs surge. In the UK, red diesel prices rose more than 50% in one year, reaching an estimated 112.95p per litre in September 2026. This spike has largely offset a temporary government duty reduction from 10.18p to 6.48p per litre. The Department for Environment, Food and Rural Affairs reported that 98% of commercial farm businesses in England relied on red diesel during the 2024/25 period.

In the United States, California farmers are facing the highest diesel prices in the country, with costs exceeding $8 per gallon by October 1. While some producers report a 6% increase, others have seen costs rise by at least 50%, particularly impacting wheat and rice farmers. In response, some agricultural trucking businesses have implemented fuel surcharges or raised seasonal rates.

Experts attribute these price increases to global energy market volatility, specifically citing Ukrainian attacks on Russian refineries and disruptions in the Strait of Hormuz resulting from a U.S.-Israeli war with Iran. To stabilize domestic prices, the U.S. administration is currently considering a ban on diesel exports.