Gasoline gasp: U.S. oil reserves plunge as strait of hormuz crisis triggers rationing fears

Since early April 2026, U.S. commercial gasoline inventories have been rapidly drawn down, with 37.4 million barrels expended amid the Iran war and the Strait of Hormuz closure, accelerating a depletion trend that threatens to push stocks to decade lows by late May and potentially all-time lows by early July. This rapid burn rate reflects a broader strategic response, as the U.S. has increased net seaborne oil and fuel exports by 3.8 million barrels per day year-on-year, partially offsetting global supply disruptions while domestic inventories continue to shrink.

The United States has assumed the role of supplier of last resort, exporting roughly half of its emergency crude oil reserves to Asia and Europe to mitigate the 12-13 million barrels per day, or approximately 12%, global supply loss caused by the conflict. This aggressive release strategy, led by President Trump, has depleted the Strategic Petroleum Reserve at a record pace, surpassing previous drawdowns under President Biden and pushing stockpiles toward historic lows not seen since the 1980s, with critical storage hubs like Cushing, Oklahoma, nearing operational minimums.

Despite the severe supply shock, oil prices have risen by a relatively muted 40%, a phenomenon attributed to significant destocking efforts by both the United States and China. While the U.S. has not increased production, it has boosted exports and strategically released reserves, and China has reduced its net imports by 5.5 million barrels per day year-on-year, collectively helping to balance the market in the short term. However, energy expert Anas Alhajji warns that refinery outages pose a looming risk of severe shortages in refined products like jet fuel, gasoline, and diesel, underscoring that crude availability alone may not prevent fuel scarcity.

The rapid depletion of U.S. oil inventories has reached operational minimum levels within just eight weeks, signaling an urgent market imbalance exacerbated by inefficient market responses that ignore fundamental supply constraints. This accelerated inventory burn, combined with ongoing geopolitical tensions, highlights the precariousness of current supply chains and the increasing risk of imminent supply shocks and rationing if the crisis persists.

Chevron CEO Mike Wirth and Exxon Mobil’s Neil Chapman have issued stark warnings about the accelerating depletion of global and U.S. petroleum inventories, highlighting June and July 2026 as critical months when market buffers and shock absorbers will be exhausted. Wirth emphasized that physical shortages and rationing are already occurring in some Asian markets, signaling early signs of supply stress, while Chapman predicted Brent crude prices could surge to $150–$160 per barrel within weeks once operational floors are breached. This convergence of expert voices underscores a rapidly tightening market where the physical oil supply is running on fumes despite optimistic futures pricing.

Market analysts from JPMorgan and Capital Economics reinforce the urgency, forecasting that commercial oil inventories in developed economies could hit operational stress or critically low levels by early to late June 2026, portending imminent supply shocks and potential rationing. With U.S. Strategic Petroleum Reserves projected to fall to their lowest since the early 1980s—around 280 million barrels by August—and global stocks plunging by a record 8.7 million barrels per day in May alone, industry leaders warn that once these historic lows are reached, the only direction is further depletion accompanied by severe price spikes. As Chapman starkly put it, “there’s only one way to go” beyond these minimum inventory thresholds.

Despite the physical market’s dire signals, market psychology remains anchored in the belief that the Strait of Hormuz closure and Iran conflict are nearing resolution, keeping prices artificially subdued for now. Chevron’s Wirth cautions that this optimism is misplaced, describing it as a market underestimating the crisis duration and thus delaying the full price impact. Moreover, even if the Strait reopens, Saudi Aramco’s CEO warns that a full return to pre-conflict supply levels may not materialize until well into 2027, indicating prolonged risks of supply shortages and rationing that policymakers and market participants must urgently reckon with.

Amid these escalating risks, Chevron has firmly rejected any notion of paying tolls or navigation fees for transit through the Strait of Hormuz, underscoring the inviolable principle of freedom of navigation through international waterways. This stance highlights the geopolitical complexities entwined with the energy crisis, where commercial interests and international law intersect amid a fraught strategic chokepoint. The firm’s position signals a broader resistance within the industry to any attempts at monetizing passage through the Strait, even as the crisis intensifies.

Despite ongoing US-Iran ceasefire talks, the Strait of Hormuz remains effectively closed, with traffic at merely 5% of normal levels, severely constraining global oil flows. Experts like Rory Johnston emphasize that reopening logistics are complex and protracted, as Iran clings to control of the strait as its primary leverage, reluctant to relinquish this strategic advantage without concrete guarantees such as toll-free passage, which remains absent from any signed agreements. This stalemate prolongs supply chain uncertainties and market volatility, as the initial shipments post-reopening are expected to be stockpiled oil rather than fresh production, delaying any meaningful increase in export capacity.

The closure of the Strait has triggered a massive reconfiguration of global supply chains reminiscent of the COVID-19 disruptions, with countries like Saudi Arabia and the UAE ramping up pipeline transit to bypass the chokepoint. However, these stopgap measures are insufficient to fully compensate for the forced shut-in of 13 to 15 million barrels per day of Middle Eastern oil production, necessitating years-long infrastructure projects such as new pipelines to restore and diversify supply routes. This enduring disruption has already resulted in cumulative supply losses exceeding one billion barrels by mid-May, intensifying economic strain worldwide and compelling nations, including India, to expand strategic petroleum reserves to buffer against future shocks.

The persistent geopolitical stalemate is exacerbated by ongoing military tensions, including US counter-blockades and recent missile interceptions, which undermine diplomatic progress and keep the Strait effectively sealed. Market analysts warn that the inertia between Iran and the US prolongs the crisis, driving record-rate depletion of commercial and buffer oil inventories and fueling upward pressure on prices to ration scarce supplies. Although oil prices have recently dipped due to weak Chinese demand, the sustained closure ensures energy costs remain a significant inflationary tailwind, complicating global economic recovery and underscoring the fragile nature of current ceasefire extensions.

The prolonged closure of the Strait of Hormuz could inflict an economic shock nearly 84% as severe as the COVID-19 pandemic, with reopening contingent on a stable peace agreement and extensive demining operations potentially lasting up to six months, delaying the restoration of normal oil flows and extending supply disruptions. As noted in a U.S. Defense Department report, the demining timeline underscores the complexity of resolving the crisis, while a clear reopening schedule could help restore market confidence and mitigate some economic fallout.

Despite widespread concerns over accelerating depletion of petroleum inventories, Alyosha highlights a substantial buffer with 8 billion barrels stored and over 500 days of runway before shortages become critical, supported by active lending from the U.S. Strategic Petroleum Reserve (SPR) and stable oil flows from the U.S. and Canada. This resilience tempers immediate supply shock fears, though the actual usable global inventory is much lower than reported, as most of the 8 billion barrels are tied up in pipeline flows and refinery systems, creating a misleading sense of security.

Oil prices are forecasted to remain elevated well beyond the reopening of the Strait of Hormuz, driven by the urgent need for countries to rebuild depleted strategic petroleum reserves and the limited spare capacity within OPEC. Paul Gooden of Ninety One projects an additional demand of roughly 1.5 million barrels per day over three years to restore inventories, effectively doubling normal market growth, while revising mid-cycle Brent prices upward from $70 to $80 amid geopolitical risks and skepticism about Saudi Arabia’s ability to sustain production surges.

The summer months pose acute risks for the U.S. as strategic petroleum reserves approach historic lows unseen since 1983, with critical shortages expected by early to mid-July 2023. Analysts warn that the government may have to cease supplementing crude supply from the SPR, which currently cushions gas prices, potentially triggering sharp price increases that could cascade into negative stock market impacts and broader economic slowdowns if the Strait of Hormuz remains closed during peak demand and the Middle East air conditioning season.