US Diesel Faces a “Perfect Storm” of Rate Hikes and Midterm Elections! EIA Warning: Demand Peak Not Yet Reached, Prices Hit New High, Inventory Drops to Lowest Level in 23 Years

According to Zhitong Finance APP, the U.S. Energy Information Administration (EIA) issued the September "Short-Term Energy Outlook" on Wednesday, sounding a level-one alert: U.S. distillate fuel oil inventories (including diesel and heating oil) are expected to fall below the critical threshold of 100 million barrels this month, marking the first time since 2003. Even more concerning, EIA warns that inventories will not only bottom out this month but will remain below the five-year average for most of 2027.

Even before this report was released, retail diesel prices across the United States had already breached historical ceilings and were moving toward a $6 per gallon milestone. According to AAA data, as of Wednesday, September 9, the national average diesel price had reached $5.9424 per gallon, hitting a new all-time high. Analysts warn that the $6 mark "will be breached for the first time in about a week."

Inventory Crisis: The "100 Million Barrel" Warning Unseen in 23 Years

EIA expects that inventories of distillate fuel oils, including diesel and heating oil, will dip below 100 million barrels in September and remain below the five-year average most of the time through 2027. This projection is based on data completed before September 3 and does not incorporate the latest escalation in the Middle East.

As of the week ending August 21, U.S. distillate fuel oil inventories had dropped to 103.4 million barrels, about 14% below the five-year average for the same period, reaching the lowest level for this time of year since the early 1980s. The situation on the U.S. East Coast is particularly dire, with local inventories at historic lows. Data analysis tracing back to the early 1980s confirms this is the lowest level on record for the corresponding period.

The immediate reasons for the inventory crisis are threefold: decreased exports of refined oil products from Russia; clashes around the Strait of Hormuz limiting oil product exports from refineries in Saudi Arabia and Kuwait; and a decline in crude oil processing at Chinese refineries. In the report, EIA assumes limited transport through the Strait of Hormuz will continue and expects a persistent supply disruption of about 600,000 barrels per day until the end of 2027.

The impact of low inventories is being transmitted to the end markets. EIA warns that, with the approach of the Northern Hemisphere’s heating season and autumn harvest, further tightening of inventories may push up residential heating oil prices in the U.S. Northeast. Matt Smith, an analyst at Kpler, notes that the U.S. is becoming "the last supplier," but inventories cannot be rebuilt as global distillate output remains below last year’s levels.

Peak Demand Season Combined with Winter Heating: A Perfect Storm in the Making

September marks the beginning of peak diesel demand. Autumn is the agricultural harvest season, during which farmers need large amounts of diesel to power combines and tractors; simultaneously, the Northern Hemisphere’s heating season is about to begin, while the Southern Hemisphere is entering sowing season—creating a double demand pressure.

EIA warns that low inventories could especially drive up residential heating oil prices in the U.S. Northeast. With distillate inventories at historical lows, any shock from winter weather could trigger dramatic price swings.

Record-breaking Prices: Diesel Surges to $5.85, Crack Spread Breaks $100 for the First Time

The immediate consequence of the inventory crisis is an uncontrolled surge in diesel prices. On September 4, AAA data showed the national average retail diesel price had risen to $5.85 per gallon, setting a new all-time high. The previous day, diesel prices had hit $5.82, both exceeding the historic peak during the Russia-Ukraine conflict in June 2022.

In its latest outlook, EIA raised its forecast for Q4 2026 retail diesel price by 14% to $5.55 per gallon, while increasing wholesale price forecasts by 33% compared to a month earlier. The annual average diesel price forecast was revised up from $4.85 to $5.07, and the 2027 forecast from $4.07 to $4.40.

The main indicator of refinery profitability—the diesel crack spread (the price difference between refined products and crude oil)—hit all-time highs after surpassing $100 per barrel for the first time last month. In intraday trading last Wednesday, it soared to $108.02 per barrel, a new historical high. According to the latest data, the crack spread has retreated to $101.10, but still remains far above historical averages.

Ironically, U.S. refinery capacity utilization has climbed to 98.0%, the highest level in recent years. EIA estimates that for the first seven months of this year, refinery crude processing volumes were the highest for the same period since 2019. Refineries are running at full throttle, yet prices keep rising—the problem is not a lack of effort from U.S. refineries, but a synchronized tightening of global refined oil supplies. EIA forecasts that refineries will reduce utilization rates in September and October for seasonal maintenance, with October averages falling to below 16 million barrels per day.

Crack Spread Becomes a New Inflation Signal: The "Thermometer" Closely Watched By Central Banks

The surge in the crack spread has drawn close attention from central banks worldwide. This relatively technical indicator surpassed the $100 mark for the first time last month and has continued to hit record highs. Increasingly, central bank officials use it as a measure of inflationary pressure. EIA expects the crack spread to remain above $2 per gallon (about $84 per barrel) before November, then gradually decline until mid-2027.

Goldman Sachs has raised its 2027 U.S. diesel crack spread forecast from $27 to $63 per barrel, while European Union refiners raised their forecast from $19 to $49 per barrel. ING commodity strategists point out that clashes near the Strait of Hormuz have dashed hopes for a swift recovery of Middle Eastern diesel supplies, and the global refining system currently has almost no spare capacity to make up for shortfalls.

Diesel, the “lifeblood of the economy,” is seeing its price surge ripple through transportation, agriculture, heating, and other economic sectors. Diesel prices are up about 58% year-over-year, having risen over 53% compared to pre-Iran-U.S. conflict levels. Diesel is about $1.5 per gallon more expensive than gasoline, and the price increase for diesel is more than double that of gasoline—the most distinctive feature of this cycle is that pressure is coming from distillate products, rather than all refined products rising together.

Political Storm: Less Than Two Months Until Midterm Elections

The unchecked surge in diesel prices is creating massive political pressure in both the White House and on Capitol Hill. With less than two months until the November midterm elections, soaring energy costs are squeezing consumers. The U.S. Strategic Petroleum Reserve (SPR) crude inventory has dropped from 404.7 million barrels a year ago to 286.6 million barrels, a net decrease of around 118 million barrels—the policy cushion is getting thinner.

Several industry executives warn that there will be a huge supply-demand gap for diesel this winter. If the gap materializes, it will further push up heating oil prices and develop into a political issue ahead of the midterm elections. For central banks worldwide debating whether to raise rates to curb inflation, the extreme tension in the diesel market is becoming an ever heavier weight on the policy scale.

As U.S. diesel inventories are set to fall below the 100 million barrel mark—a level untouched in 23 years—retail prices hit a historic high of $5.85 per gallon, and the crack spread surges to a record $108 per barrel, this energy crisis, ignited by geopolitical conflicts and driven by shrinking global supply, is transmitting into the real economy and monetary policy at unprecedented speed—and with less than two months until the U.S. midterm elections.