How the U.S. Broke Its Dependence on OPEC Oil

Where Gas Is Most Expensive in America

Where you fill up can make a significant difference in what you pay at the pump.

This map shows average regular gasoline prices across the U.S. using September 2026 data from AAA Fuel Tracker. Prices are per gallon and rounded to the nearest cent.

Where Gas Prices Run Highest and Lowest

The broader divide is regional. The highest fuel prices are concentrated in the West, while much of the South sits below the $4.48 national average.

The table below ranks prices from highest to lowest in the 50 states and Washington, D.C.

Part of the difference reflects the journey fuel takes to reach a station. Longer distances from refineries, ports, and distribution terminals can mean higher transportation costs, which can push up retail prices.

States such as Louisiana and Texas also benefit from extensive oil and refining infrastructure, helping keep distribution costs relatively low.

Why California Costs So Much More

California’s premium goes beyond taxes. The Golden State requires a special gasoline blend designed to reduce air pollution, which costs more to produce. State environmental programs also add compliance costs for fuel suppliers, alongside state and local taxes.

The state’s specialized fuel comes from a relatively limited pool of suppliers. California is geographically separated from major U.S. refining centers along the Gulf Coast, and only some refineries elsewhere can produce gasoline that meets its requirements. Bringing in additional supply is therefore more complicated than simply sourcing cheaper fuel from another state.

This becomes especially important when a refinery shuts down for maintenance or experiences an unexpected outage. Replacement supplies can take time to arrive, leaving the market more vulnerable to price spikes. The same factors that keep California expensive under normal conditions can make disruptions more painful for drivers.

No Relief This Fall

Gas prices usually ease after the summer driving season. Demand falls as travel slows, while cooler weather allows refiners to use less expensive gasoline components that would evaporate too easily in summer heat. The seasonal change in fuel requirements can help reduce costs even without a decline in global oil prices.

This September, however, that usual pattern has been disrupted. Expensive crude oil and continued volatility in the Strait of Hormuz have pushed up prices at the pump. The national average of $4.48 per gallon is the highest on record for late September.

Local advantages offer only partial protection from those pressures. Gasoline prices generally track crude oil costs, so even states with lower distribution costs and taxes remain exposed to oil-market disruptions.

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To compare these prices with major global events, check out Oil Prices and Geopolitical Events on Voronoi.

The Countries Behind Global Diesel Supply

Diesel powers the trucks, farm equipment, and ships that keep goods moving, making its availability a concern far beyond the fuel pump.

The United States is the world’s largest diesel exporter, accounting for a significant share of global supply. Now, potential U.S. export restrictions are drawing attention as Russia has already moved to restrict its own diesel exports.

This graphic shows 2025 diesel exports by country, based on the annual average of monthly data from the Joint Organisations Data Initiative (JODI) and the Organization of the Petroleum Exporting Countries (OPEC).

Which Countries Export the Most Diesel?

The United States exported 1.26 million barrels per day, ahead of Russia’s 783,400 and Saudi Arabia’s 678,200. India and South Korea rounded out the top five, each shipping more than half a million barrels daily.

America’s large refining system helps underpin that lead. As of January 2026, the U.S. had 130 operable refineries with 18.2 million barrels per day of crude distillation capacity.

The table below shows the world’s top diesel-exporting countries in 2025:

The UAE, Iran, and Iraq are not listed separately because comparable 2025 data are unavailable.

Together, the Netherlands, Singapore, and Belgium account for 12.9% of exports, but much of that is re-exported fuel. All three are trading hubs that import diesel, store and blend it, then ship it onward, so their export totals overstate what their own refineries produce.

By region, Europe leads with 35.3% of global diesel exports, though Russia alone accounts for more than a quarter of that total.

Much of the rest is intra-European trade, with refiners in Germany, Italy, and Spain shipping to neighboring countries. The continent is still a net diesel importer overall, relying on cargoes from the U.S., India, and the Middle East to cover the gap.

Asia-Pacific follows at 28.9%, supported by export-oriented refiners in India, South Korea, and Singapore.

Why Diesel Export Restrictions Matter Globally

The U.S. lead has taken on new significance as Washington weighs export restrictions. President Donald Trump backed the idea on September 22, 2026, although a White House official disputed a reported 90-day ban plan the following day.

Russia, meanwhile, introduced broad diesel export restrictions in July, with the measures subsequently extended through September. Together, the two countries supplied nearly a quarter of global diesel exports in 2025.

For the countries buying American oil and fuels, U.S. export restrictions could reduce access to a major supplier. Analysts have also warned that losing export markets could prompt U.S. refiners to cut output, potentially reducing production of gasoline and jet fuel alongside diesel.

The debate highlights a potential trade-off: restricting exports could keep more diesel in the U.S. in the short term, but if weaker export demand leads refiners to process less crude, they would also produce less gasoline and jet fuel.

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If you enjoyed today’s post, check out The U.S. Exports 35% More Oil Than It Imports on Voronoi.