Fuel shortages happen when the supply chain between crude oil and your gas tank gets disrupted at one or more points. The causes range from refinery closures and seasonal maintenance to geopolitical conflicts, shifting demand patterns, and reduced buffer stocks. Most shortages are regional and temporary, but several structural forces have made the fuel supply system less resilient than it used to be.
Fewer Refineries, Tighter Supply
A refinery turns crude oil into usable products like gasoline, diesel, and jet fuel. Even when there’s plenty of crude oil available globally, a shortage of refining capacity can create a bottleneck that drives up prices and limits supply at the pump. And the world has been losing refineries.
The COVID-19 pandemic hit refineries hard. Several facilities around the world closed permanently or converted to producing renewable fuels during the demand collapse of 2020. These weren’t temporary shutdowns. Once a refinery closes, it rarely reopens because the cost of restarting operations is enormous. China’s government has also been actively shutting down smaller, less efficient refineries as part of a broader industrial policy, though local governments have pushed back on those closures. In the competitive markets of North America and Europe (the “Atlantic Basin”), older and less sophisticated refineries face the greatest risk of closure as newer, larger facilities come online in Asia and the Middle East.
The net effect is that refining capacity has concentrated in fewer, larger facilities. That’s more efficient in normal times, but it means a single disruption at a major refinery can ripple through regional fuel markets much faster than it would have a decade ago.
Seasonal Maintenance Creates Predictable Crunches
Refineries don’t run continuously forever. They require periodic shutdowns called “turnarounds” for cleaning, inspection, and repair. These outages cluster in the first quarter of the year and again in the fall, timed to coincide with periods when overall fuel demand is at its seasonal lowest. The logic makes sense on paper: take capacity offline when people are driving and heating less.
In practice, though, these maintenance windows tighten supply just enough that any unexpected event during the same period, like a hurricane, a pipeline leak, or an unplanned refinery problem, can tip a manageable situation into a genuine shortage. Spring and fall fuel price spikes often trace back to this overlap of planned maintenance and unplanned disruption.
Demand Shifted Faster Than Supply Could Follow
The pandemic didn’t just reduce fuel demand temporarily. It reshuffled which fuels were needed and when. U.S. jet fuel consumption fell nearly 40% in 2020 when commercial air travel collapsed. Over the next four years, it surged back at an annualized growth rate of 12%, more than five times faster than the pre-pandemic trend. Refineries had to rapidly shift their output mix to produce more jet fuel, and every barrel of crude directed toward jet fuel is a barrel not becoming gasoline or diesel.
Refineries can adjust the ratio of products they produce from a barrel of crude, but only within limits set by their equipment. A facility optimized for gasoline can’t instantly pivot to maximum jet fuel output. When demand for one product spikes while demand for another holds steady, the system strains. This is one reason you can see diesel shortages even when gasoline supply seems adequate, or vice versa.
Smaller Strategic Reserves Mean Less Cushion
The U.S. Strategic Petroleum Reserve (SPR) exists as an emergency buffer, a massive stockpile of crude oil stored in underground salt caverns along the Gulf Coast. At its peak around 2010, the SPR held roughly 727 million barrels. As of late 2025, it holds about 413 million barrels, roughly 57% of that peak level.
The drawdown happened for several reasons, including authorized sales to fund government programs and a major release in 2022 to combat surging fuel prices after Russia’s invasion of Ukraine. Refilling the reserve has been slow. A smaller SPR doesn’t cause shortages directly, but it reduces the government’s ability to flood the market with emergency supply when a crisis hits. That missing cushion makes every disruption feel sharper at the pump.
Geopolitics and Trade Disruptions
Fuel is a globally traded commodity, and conflicts or sanctions can rearrange supply flows overnight. When Western nations sanctioned Russian oil exports starting in 2022, it didn’t remove Russian oil from the global market entirely, but it forced a massive rerouting of tanker traffic. European refineries that had relied on Russian crude had to source from farther away, increasing shipping times and costs. Countries that continued buying Russian oil at a discount still faced logistical bottlenecks as the global tanker fleet adjusted.
Instability in key shipping routes compounds the problem. Attacks on commercial vessels in the Red Sea, for instance, have forced tankers to reroute around the southern tip of Africa, adding weeks to delivery times. Pipeline sabotage, export terminal damage, and OPEC production decisions all play similar roles. Because fuel markets operate on thin margins during peak demand, even a modest disruption to international trade flows can create temporary shortages in specific regions.
The Global Picture Is Looser Than It Feels Locally
Here’s what can feel counterintuitive: at the global level, oil production is actually expected to outpace consumption in the coming years. The U.S. Energy Information Administration forecasts global liquid fuels production of about 107.8 million barrels per day in 2026, against consumption of roughly 104.8 million barrels per day. Global oil inventories are projected to build by about 2.7 to 3.1 million barrels per day through 2027.
So why do shortages still happen if there’s a global surplus? Because crude oil in a storage tank in one country doesn’t help a driver in another country facing empty gas station pumps. The bottlenecks are almost always in refining, distribution, or regional logistics rather than in the total amount of oil being pulled out of the ground. A surplus of crude in global markets can coexist with a gasoline shortage in a specific state or country if the local refinery is down, the pipeline is constrained, or sanctions have blocked the usual supply route.
Why Some Regions Get Hit Harder
Fuel shortages rarely affect everywhere equally. Areas most vulnerable share certain characteristics: they depend on a single refinery or a single pipeline for supply, they sit at the end of a long distribution chain, or they lack nearby storage capacity. Islands and remote regions are especially exposed because they rely on tanker deliveries that can be delayed by weather or port congestion.
In the U.S., the East Coast is more vulnerable than the Gulf Coast because it has far less refining capacity relative to its population. Most of its fuel arrives via pipeline from Gulf refineries or by tanker from overseas. When the Colonial Pipeline was shut down by a cyberattack in 2021, stations across the Southeast ran dry within days, not because fuel didn’t exist but because there was no alternative way to move it fast enough. Infrastructure concentration turns localized problems into regional crises.
The energy transition adds another layer. As governments set targets to phase out internal combustion engines and incentivize electric vehicles, some oil companies have slowed investment in new refining capacity. Building a refinery that takes five years to construct and needs decades to pay for itself looks riskier when policy signals suggest declining long-term demand for its products. That hesitation means existing facilities carry a heavier load, and any disruption to those facilities has outsized consequences.