IEA warns global oil stockpiles could hit 'critical levels' by summer

Global oil inventories are on a collision course with summer demand, and the International Energy Agency (IEA) is sounding the alarm: stockpiles could fall to 'critical levels' before the peak driving and cooling season arrives. The warning, issued in the agency's latest monthly report, comes as the US-Israel military campaign against Iran continues to disrupt flows through the Strait of Hormuz, a chokepoint for roughly 20% of the world's crude. Even if a ceasefire is reached tomorrow, the IEA cautions, the energy crisis could drag on for months, because the damage to supply chains and tanker availability will not reverse overnight. For executives across transport, manufacturing, and energy-intensive industries, this is not a distant geopolitical headline - it is a direct input cost signal with the potential to reshape margins before the second quarter ends.

The IEA's data shows that global observed oil inventories fell by 32.1 million barrels in February, the steepest monthly draw since the start of the year. Commercial stockpiles in OECD countries now sit 38.6 million barrels below their five-year average, a deficit that is widening as refineries ramp up output ahead of summer. The agency projects that if current production and demand trends hold, inventories could hit 'critically low' levels by June - a threshold that historically triggers price spikes and emergency policy responses. The last time the IEA used language this stark was in March 2022, days after Russia's invasion of Ukraine sent Brent crude above $130 a barrel.

China, the world's largest crude importer, has so far acted as a buffer. Its strategic petroleum reserves remain relatively resilient, but analysts note that onshore commercial volumes have begun to decline for the first time in months. That shift matters: China's buying patterns have been a key stabilizer in global markets, and any sustained drawdown there would remove a major cushion. 'We're seeing stock draws continuing into the summer, and with the possibility or the likelihood that we reach critical levels,' the IEA report states, adding that the risk is compounded by the fact that OPEC+ spare capacity is concentrated in a handful of countries - namely Saudi Arabia, the UAE, and Iraq - and much of that capacity may be overstated or offline due to maintenance.

The supply-side picture is further complicated by the ongoing conflict in the Middle East. The US-Israel campaign against Iran has targeted not only military infrastructure but also oil-related assets, including refineries and export terminals. Iran's crude output has fallen by an estimated 300,000 barrels per day since the strikes began, and tanker tracking data shows a sharp drop in loadings from Kharg Island, Iran's main export terminal. The Strait of Hormuz remains a flashpoint: Iran has threatened to close the waterway in retaliation, a move that would instantly remove 17 million barrels per day from global supply - roughly 17% of total consumption. While that scenario remains unlikely, the mere risk has pushed war risk insurance premiums for tankers transiting the Gulf to multi-year highs, adding $2-$3 per barrel to delivered costs.

For corporate decision-makers, the implications are immediate and operational. Fuel-intensive sectors - airlines, shipping, trucking, chemicals, and agriculture - face input cost inflation that cannot be fully hedged at current forward curves. The Brent crude forward curve is already in backwardation, meaning spot prices exceed futures, a classic signal of near-term scarcity. CFOs who locked in fuel hedges at lower prices earlier this year are sitting on gains, but those hedges are rolling off. The window to extend coverage at reasonable premiums is narrowing. Meanwhile, procurement teams should expect longer lead times for refined products, particularly diesel and jet fuel, as refineries compete for dwindling crude supplies.

Regulatory and policy responses are also on the table. The IEA's warning gives cover for member governments to consider coordinated emergency stockpile releases, similar to the 60-million-barrel drawdown in March 2022. The US Strategic Petroleum Reserve currently holds 372 million barrels, down from 638 million in 2020, limiting Washington's firepower. The Biden administration has already signaled it is monitoring the situation, but any release would be a temporary fix, not a structural solution. Longer term, the crisis reinforces the case for energy diversification - renewables, nuclear, and domestic production - but those shifts take years, not months.

The strategic stakes for peers in similar roles are clear: this is a moment to stress-test supply chains, revisit hedging strategies, and build scenario plans for $100-plus oil. The IEA's language is deliberately calibrated to grab attention, but the underlying data is unambiguous. Inventories are falling, geopolitical risk is elevated, and the summer demand peak is approaching. Executives who treat this as a temporary blip risk being caught flat-footed when the next price spike hits.