The global petroleum system is entering a period of increased instability as oil demand begins to decline, driven by electrification, efficiency gains, and shifting logistics. This is not a smooth transition to a smaller, calmer market. Instead, the institutions, supply chains, and fiscal bargains built around oil were designed for growth, and a shrinking market changes incentives in ways that make shocks more frequent and severe.
The historical pattern of oil shocks
Since the early 1970s, the world has experienced roughly 13 major oil shocks over 53 years. These include the Arab oil embargo (1973–1974), the Iranian Revolution (1979), the Iran-Iraq War (1980–1988), the first Gulf War (1990–1991), the Venezuela strike and Iraq disruption (2002–2003), Hurricanes Katrina and Rita (2005), the 2008 commodity spike, the Arab Spring and Libyan disruption (2011), the 2014–2016 OPEC price war, the 2019 Abqaiq attack, the 2020 COVID price crash, Russia’s 2022 invasion of Ukraine, and the 2026 Iran and Hormuz crisis. Some were supply shocks, some demand shocks, and some resulted from wars, cartel-management failures, weather events, or infrastructure failures. The common feature is that the petroleum system has produced instability repeatedly.
Why decline increases volatility
In a growing market, OPEC+ could ask members to restrain supply today because the unsold barrel was expected to be valuable tomorrow. Electrification weakens that bargain by making the deferred barrel look less like stored value and more like future risk. The International Energy Agency (IEA) has described the current crisis as “the most severe oil supply shock in history,” with North Sea Dated crude trading around $130 per barrel in April 2026, about $60 per barrel above pre-conflict levels. The IEA also noted that the volume of fuel supply offline is higher than during the 1973 shock, with the Strait of Hormuz normally carrying around 20 million barrels per day of crude oil and oil products—about one-fifth of global oil consumption.
Lower average demand does not guarantee a calm decline. It can produce lower average prices, more fragile producers, and more frequent shocks. In a growing market, a price shock is often followed by new investment because the long-term demand story remains intact. In a declining market, investors become more cautious, existing fields decline, and demand does not fall evenly by product, region, or season. The result can be periods of oversupply followed by sudden tightness.
The role of producer-state fragility
Production cost is not the same thing as political resilience. Many OPEC barrels are cheap in lifting-cost