1973 Oil Embargo (1973-1974)
Arab members of OPEC cut oil exports and embargoed the US and allies during the Yom Kippur War. Oil prices quadrupled within months, forcing consumers to shift fuels and ration energy.
Western economies entered recession and adopted emergency conservation measures.
The shock created lasting incentives for fuel switching and led to creation of the IEA in 1974 to coordinate energy security.
Shows how a geopolitical supply disruption can abruptly reorder energy consumption, the same mechanism driving the current coal shift.
