The 1979 Oil Crisis

What caused the 1979 oil shock

Strikes in Iran's oil fields began in late 1978 as protests against the Shah spread. The Shah left the country in January 1979, and by then Iranian output had fallen by 4.8 million barrels per day (b/d), according to Federal Reserve History. Other producers, led by Saudi Arabia, raised output and covered much of the gap. The actual net loss of world supply was much smaller than the headline figure.

The price shock was larger than the shortage because of behaviour. Refiners, traders, utilities and governments rushed to build inventories against further losses. Buyers moved from long-term contracts to the spot market, where prices rose far above official OPEC prices. OPEC members then raised their official prices in steps to catch up with spot.

Prices year by year, 1978–1986

Panic at the pump

In the United States, price controls and allocation rules turned a modest supply loss into visible shortages. In spring and summer 1979, queues formed at filling stations, and on 9 May 1979 rationing began in nine California counties. Several states used odd-even schemes, in which drivers could buy fuel only on days matching the last digit of their licence plate. Europe, which did not cap retail prices in the same way, had higher prices but fewer queues.

The Iran-Iraq war: a second leg up

Iraq invaded Iran on 22 September 1980. Both countries' exports fell sharply, and the market lost supply just as stocks had been rebuilt. Prices stayed in the mid-to-high $30s through 1980 and 1981. The war lasted until 1988, but by then the market had changed completely.

Inflation, interest rates and recession

US consumer inflation rose from below 5% in early 1976 to 9% by the end of 1979, and peaked at nearly 15% in 1980. Paul Volcker became Federal Reserve chairman in August 1979 and raised the federal funds rate to a peak of 19% in 1981. The combination of the oil shock and tight money produced back-to-back recessions in 1980 and 1981–82, which Federal Reserve History describes as the most severe since the Great Depression. For how this compares with oil and inflation today, see oil prices and inflation.

The 1980s collapse that followed

High prices destroyed demand and created new supply. Power stations switched from oil to coal, gas and nuclear power. Cars became more efficient. Non-OPEC output grew in the North Sea, Alaska and Mexico. OPEC introduced production quotas in 1982 to defend prices, and Saudi Arabia acted as swing producer, cutting its own output from around 10 million b/d in 1981 to roughly 3.5 million b/d by 1985.

In late 1985 Riyadh changed course. It offered netback contracts, which guaranteed refiners a margin, and raised output to win back market share. The price collapsed: the monthly average WTI spot price fell from $22.93 in January 1986 to $11.59 in July 1986, according to EIA data. Real oil prices then stayed low for most of the next two decades.

The same pattern returned in 2014–2016, when high prices encouraged US shale and OPEC again chose market share over price. The history of OPEC+ cuts is in many ways an attempt to avoid repeating 1986.

Lessons for today's market

• Precautionary buying can matter more than lost barrels. In 1979 the net supply loss was a few percent of world demand, yet prices more than doubled.
• Retail price controls create queues. Countries that let prices rise saw fewer shortages.
• Very high prices sow their own decline. The demand response to 1979–80 took years, but it was large and lasting.

Today, Iran remains a key source of supply risk. See Iran's oil production and exports and the 2026 price history, when conflict with Iran closed the Strait of Hormuz.