The U.S. diesel market is brewing a "perfect storm" with interest rate hikes and the midterm elections! EIA warns: the peak demand has not yet arrived, prices have already hit a new high, and inventories have fallen to a 23-year low.

On Wednesday, the U.S. Energy Information Administration (EIA) sounded a major alarm in its September Short-Term Energy Outlook: U.S. distillate fuel oil inventories (including diesel and heating oil) are expected to dip below the 100-million-barrel mark this month, marking the first time since 2003. Even more concerning, the EIA warned that inventories will not only bottom out this month but will also remain below the five-year average for most of 2027. Just before this report was released, nationwide diesel retail prices have repeatedly broken historical ceilings and are approaching the milestone of $6 per gallon. According to data from the American Automobile Association (AAA), as of Wednesday, September 9, the national average price for diesel reached $5.9424 per gallon, setting a new historical high. Analysts warned that the $6 threshold is likely to be breached for the first time in about a week. Inventory Crisis: The 100 Million Barrels Warning Level Not Seen in 23 Years The EIA expects that distillate fuel oil inventories, including diesel and heating oil, will fall below 100 million barrels in September and stay below the five-year average low for most of 2027. This forecast is based on data collected before September 3 and does not account for the latest escalation in the Middle East situation. As of the week ending August 21, U.S. distillate fuel oil inventories had already dropped to 103.4 million barrels, approximately 14% lower than the five-year average for the same period, a record low for this time of year since records began in the early 1980s. The situation is particularly severe on the U.S. East Coast, where local inventory levels are at historic lows. Data analyzed from as far back as the early 1980s confirms that this is the lowest level recorded for this time of year. The direct causes of the inventory crisis include three main factors: a decline in Russian refined oil exports, conflicts around the Strait of Hormuz limiting refined oil shipments from Saudi Arabia and Kuwait, and a decrease in crude processing at Chinese refineries. The EIAs report assumes that transportation restrictions in the Strait of Hormuz will continue, with an expected persistent supply disruption of about 600,000 barrels per day until the end of 2027. The impact of low inventories is being felt downstream. The EIA warned that as the Northern Hemisphere heating season and autumn harvest season approach, further tightening of inventories may drive up residential heating oil prices in the U.S. Northeast. Kpler analyst Matt Smith noted that the U.S. is becoming the last supplier, but inventories cannot build up because global distillate production remains below last years levels. Demand Peak Combined with Winter Heating: A Perfect Storm in the Making September marks the beginning of the peak diesel demand season. Autumn is the agricultural harvest period, where farmers require substantial diesel to power combines and tractors; meanwhile, the heating season is approaching for the Northern Hemisphere and sowing season is underway in the Southern Hemisphere two layers of demand converging at once. The EIA warned that low inventories could particularly drive up residential heating oil prices in the U.S. Northeast. In the context of historically low distillate oil inventories, any winter weather impact could lead to severe price fluctuations. Record Prices: Diesel Hits $5.85, Crack Spread Exceeds $100 for the First Time One direct consequence of the inventory crisis is the uncontrolled rise in diesel prices. On September 4, the American Automobile Association (AAA) reported that the national average retail price for diesel soared to $5.85 per gallon, a historic high. The previous day, diesel prices had already reached $5.82, both surpassing the historical peak set during the Russia-Ukraine conflict in June 2022. In its latest outlook, the EIA raised its forecast for fourth-quarter retail diesel prices in 2026 by 14% to $5.55 per gallon, while increasing the wholesale price forecast by 33% compared to a month ago. The annual average diesel price forecast was raised from $4.85 to $5.07, and the 2027 forecast was increased from $4.07 to $4.40. The crack spread, a measure of refining profitability (the price difference between refined oil and crude oil), soared to new highs last month, exceeding $100 per barrel for the first time. Last Wednesday, it briefly surged to $108.02 per barrel, setting a new historical record. As of the latest data, the crack spread has returned to $101.10 but remains well above the historical average. Ironically, U.S. refinery capacity utilization has reached 98.0%, the highest level in recent years. The EIA estimated that crude oil processing at refineries during the first seven months of this year was the highest for the same period since 2019. The machines are at full throttle, yet prices continue to climb the issue lies not in U.S. refineries not working hard enough, but in the synchronous contraction of global refined oil supply. The EIA expects that refineries will adjust their operating rates downward in September and October due to seasonal maintenance, averaging below 16 million barrels per day in October. Rising Crack Spread as a New Indicator of Inflation: A "Thermometer" Under Central Bank Watch The soaring crack spread has caught the close attention of central banks worldwide. This somewhat specialized indicator first broke the $100 barrier last month and continues to set new highs, increasingly being used by central bank officials to gauge inflationary pressures. The EIA projects that the crack spread will maintain levels above $2 per gallon (approximately $84 per barrel) until November, before gradually declining until mid-2027. Goldman Sachs has sharply raised its 2027 U.S. diesel crack spread forecast from $27 per barrel to $63, while EU refiners have increased their forecast from $19 to $49. ING commodity strategists noted that the conflicts around the Strait of Hormuz have dashed hopes for a rapid recovery of diesel supplies in the Middle East, and the global refining system currently has almost no spare capacity to fill the supply gap. As the lifeblood of the economy, soaring diesel prices are being transmitted across various economic sectors, including transportation, agriculture, and heating. Diesel prices have risen approximately 58% year-on-year, more than 53% compared to pre-Iranian conflict prices. Diesel is about $1.5 per gallon more expensive than gasoline, and the price increase for diesel has more than doubled that of gasoline a defining feature of this market cycle is that the pressure comes from distillate oil products, rather than a generalized rise in all refined oils. Political Storm Eye: Less than Two Months Until Midterm Elections The uncontrolled rise in diesel prices is creating immense political pressure in the White House and Congress. With less than two months until the midterm elections in November, surging energy costs are squeezing consumers. U.S. Strategic Petroleum Reserve (SPR) crude oil stocks have fallen from 404.7 million barrels a year ago to 286.6 million barrels, a net decrease of about 118 million barrels the policy cushion is thinning. Several industry executives have warned that a massive supply-demand gap in diesel is expected this winter. If this gap materializes, it would further push heating oil prices up and continue to fester as a political issue leading up to the midterm elections. For central banks that are weighing whether to raise interest rates to curb inflation, the extreme tightness in the diesel market is becoming an increasingly heavy factor on the policy balance. As U.S. diesel inventories are poised to dip below the 100 million barrels mark, an unprecedented level not seen in 23 years, retail prices have surpassed the historical high of $5.85 per gallon, and the crack spread has soared to a record $108, this energy crisis ignited by geopolitical conflict and driven by global supply contraction is transmitting to the real economy and monetary policy at an unprecedented pace and there are less than two months left until the U.S. midterm elections.