COLORADO: (Sep 21) Diesel fuel prices in the U.S. continue to break all-time records, hitting $6.28 a gallon as a national average on Sept. 14, 2026, and they aren’t likely to come down anytime soon. Because diesel is the fuel for freight transportation, farming and construction – and is related to a key heating fuel – the effects are set to spread across the entire U.S. economy.
The inflation-adjusted price of diesel in late August was about as high as it was in 2022 and has likely risen further. There are still three factors that we, scholars of U.S. and global energy markets and supply chains, see that set the stage for prices to remain high and potentially climb even further.
Two of these elements – environmental protection regulations on oil refineries and Russia’s war with Ukraine – have been building tension for years. But the situation has been pushed into a crisis by the U.S. war against Iran, which has closed the Strait of Hormuz to a large percentage of oil and refined products shipments for more than six months.
Source: PTI News
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