U.S. diesel prices have surpassed $6 per gallon for the first time in history. As the peak season for diesel demand approaches, this fuel—rarely noticed directly by American consumers yet vital to global supply chains—is becoming a driver of inflation at an unprecedented pace.
According to Zhitong Finance APP, U.S. diesel prices have surpassed $6 per gallon for the first time in history. As the peak season for diesel demand approaches, this fuel—rarely directly perceived by American consumers yet critical to supporting global supply chains—is becoming a driver of inflation at the fastest pace ever recorded.
The latest data from the American Automobile Association (AAA) on Friday shows that the national average price of diesel reached $6.0556 per gallon; in California, the average price was even higher at $7.9827 per gallon. The AAA noted that the cost for truck drivers and farmers to fill their tanks is approximately 63% higher than the same period last year.
This unprecedented surge in diesel prices stems from multiple shocks hitting the global refining and shipping systems.
Ukrainian drones have continuously attacked Russian refineries for months, forcing Moscow to impose a ban on diesel exports. In the Middle East, the United States and Israel are engaged in war against Iran, while Iran and its Houthi allies in Yemen have attacked refineries belonging to U.S. Gulf allies. Shipping through the Strait of Hormuz and the Bab el-Mandeb Strait has been disrupted, with tanker attacks causing fuel cargo volumes to fall far below pre-war levels. Before the conflict, the Strait of Hormuz accounted for approximately one-fifth of global oil supply. Additionally, China's restrictions on fuel exports have further tightened global diesel supplies.
Gary Simmons, Chief Operating Officer of U.S. refiner Valero Energy (VLO.US), stated that wars in Eastern Europe and the Middle East have led to the shutdown of refineries with a combined capacity of approximately 5 million barrels per day.
Andy Lipow, President of Lipow Oil Associates, estimated in a report on Wednesday that global diesel supply has decreased by nearly 8%, with little idle refining capacity available to bridge the gap. Helima Croft of RBC Capital Markets similarly pointed out that U.S. refinery utilization rates have effectively reached 98%, leaving no spare capacity.
Furthermore, inventory and profit margin data are also raising alarms. Data from the U.S. Energy Information Administration (EIA) shows that U.S. diesel inventories stand at 106.3 million barrels, 13% below the five-year average; distillate stockpiles are at their lowest levels for this time of year in decades.
Data from LSEG shows that the U.S. diesel crack spread, a measure of refining profitability, surged to a historic record of $112.17 per barrel on Thursday. Linda Giesecke of Rapidan Energy warned that as seasonal refinery maintenance begins, restocking will be difficult over the next two months amid tight global diesel supplies. Diesel profit margins are expected to remain high and volatile until early next year.
Economic Impact: Inflationary Pressure Resurges from Trucking to Farming
Diesel fuels trucks, trains, ships, and heavy equipment, and also powers agricultural machinery, electricity generation, and home heating. The rise in heating and agricultural demand during autumn further amplifies the impact. Although consumers are more sensitive to retail gasoline prices, often overlooking diesel price increases, the effects are transmitted layer by layer through the prices of food, transportation, construction, and commodities.
During this period, crude oil was the primary driver of fuel prices. As tensions between the United States and Iran escalated, benchmark crude oil futures climbed back above $100 per barrel. At the time of writing, international oil prices had retreated slightly but remained at elevated levels, with Brent crude futures trading at approximately $105 per barrel and WTI crude at around $100 per barrel. Since September, WTI crude has accumulated a gain of about 16%, while U.S. diesel prices have surged by nearly 60% since late February, following attacks on Iran by the United States and Israel.
Bob McNally, President of Rapidan Energy, stated that diesel is a "more隐蔽, more expensive, and more impactful fuel," serving as the true lifeblood of the economy.
"Every truck, every delivery, every package, and every procurement has become more expensive," warned Patrick De Haan, an analyst at GasBuddy, on social media platform X. He noted that Americans are now spending approximately $700 million more per day on gasoline and diesel than they did a year ago. Record-high diesel prices will affect every shipment and transport operation, potentially reigniting inflation across the entire supply chain. He also described current diesel price levels as a "silent killer" for the economy.
"Diesel prices have more than doubled in five months, impacting our cash flow," said Alex Ryan, Energy Director at Oasis Energy. "There will definitely be a tipping point; I just don't know when or where it will occur."
Arthur Erickson, CEO of agricultural drone company Hylio, lamented that farmers and ranchers have had little respite after a series of cost shocks. Many are facing increasing financial pressure as production costs soar while crop prices decline.
Political Implications: Limited Options for the White House Before the Midterm Elections
This surge in energy costs has become a significant political challenge for Trump and the Republican Party ahead of the November midterm elections. With less than 50 days remaining until the election, Republicans are attempting to maintain their slim majority in Congress.
According to a poll conducted last month, the Democratic Party holds an 8-percentage-point lead over the Republican Party on which party has better solutions for cost-of-living issues. High diesel prices particularly impact Maine—which has the highest proportion of households using heating oil in the nation—as well as agricultural states such as Ohio, Kansas, and Iowa.
White House spokesperson Taylor Rogers stated that Trump remains focused on expanding U.S. refining capacity and reducing energy costs, asserting that oil and gas prices will decline as the United States maintains control over the Strait of Hormuz. However, Trump acknowledged on Wednesday that relief from soaring oil prices might not arrive until after the election.
In fact, apart from further releasing the Strategic Petroleum Reserve or implementing export bans, the White House has few policy tools available. U.S. Secretary of the Interior Doug Burgum previously stated, when asked about diesel export controls, that all options were under consideration, but acknowledged that such export restrictions had historically driven up prices. Croft from RBC described rising diesel prices as a "significant challenge" for the Trump administration.
Market participants widely believe that as long as the conflicts involving Russia-Ukraine and the U.S.-Iran continue to constrain refining and shipping operations, global diesel supplies will struggle to recover quickly. The convergence of peak autumn demand and low inventory levels suggests that diesel prices, along with the inflationary pressures they generate, are likely to remain a dominant factor in the U.S. economic and political agenda in the coming months.
Edited by Deng