Chris HerbDonald TrumpNora DuncanJohn BlairNed LamontVincent J. CandeloraRob BlanchardMotor Transport Association of ConnecticutDepartment of Social ServicesConnecticut Department of Social ServicesConnecticut Department of Energy and Environmental ProtectionAARPConnecticut Energy Assistance ProgramU.S. Energy Information AdministrationAAAConnecticut Energy Marketers Association

Diesel prices in Connecticut hit record high, nearing $6.48 per gallon; distributors warn 'no limit' as wars and harvest collide

Diesel prices in Connecticut have surged to a record high of nearly $6.48 per gallon, a 71% increase from last year, as fuel distributors warn of potential shortages and further price hikes due to ongoing wars and seasonal harvest demands, raising concerns for consumers and the economy.

Connecticut Public Connecticut Public+1 source25 September 2026 · 13:16 UTC
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Diesel prices in Connecticut have reached a staggering $6.48 per gallon, marking a 71% increase from last year. This surge is attributed to ongoing geopolitical conflicts, particularly between the U.S. and Iran, and Russia's war in Ukraine, which disrupt petroleum production and exports.1

Chris Herb, president and CEO of the Connecticut Energy Marketers Association, expressed grave concerns, stating, “There’s no limit to how high [prices] could go if these wars continue.” He noted that the autumn harvest season further complicates the situation, as farmers require diesel fuel for their equipment.

The U.S. Energy Information Administration reported that diesel stocks are currently 12% below the seasonal average, indicating potential supply shortages in the coming months. Herb warned that these conditions could persist, especially if the government imposes restrictions on fuel exports to safeguard domestic supplies.4

Additionally, home heating oil prices have also surged, averaging $5.91 per gallon, a 50% increase from earlier this year. This poses a significant challenge for low-to-moderate income households relying on the Connecticut Energy Assistance Program, which is projected to provide $1,995 this winter, down 33% from previous years.

John Blair, president of the Motor Transport Association of Connecticut, highlighted the broader economic impact, stating that rising diesel prices are a “grave concern” for the trucking industry, which ultimately affects consumer prices across various sectors.

Key Insight
“Home heating oil, chemically similar to diesel, is up 50% in three months to $5.91 per gallon, straining low-income households. The state projects qualifying families will receive $1,995 this winter, down 33% from the 2019-20 maximum grant, as demand for aid grows.”
CuriousCats studied:
1
Connecticut PublicConnecticut Public
“Despite diesel prices hitting a record high this week and home heating oil up 50% in just three months, the state’s fuel distributors warn the problems are far from over.”
Connecticut Public →
2
CT MirrorCT Mirror
“The average retail diesel price hit a record high Wednesday in Connecticut, approaching $6.48 per gallon, then ticked another 3/10ths of a penny over that mark on Thursday, according to AAA. That's up 71% from the $3.78 average price recorded here one year ago.”
CT Mirror →
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