The Basics
- Simple definition: An unexpected event that suddenly changes the supply of a key good or service, affecting production costs and output.
- Core idea: Something disrupts what and how much the economy can produce.
- Think of it as: The economy’s engine suddenly losing or gaining power.
What It Actually Means
A negative supply shock reduces available supply or raises production costs – oil price spike, crop failure due to flood, pandemic closing factories, trade disruption. This shifts aggregate supply left, raising prices and reducing output – stagflation risk. A positive supply shock increases supply or lowers costs – technological breakthrough, good harvest, new resource discovery – shifting AS right, lowering prices, and raising output.
Example
The 2022 floods in Pakistan destroyed crops, disrupted transport, and damaged infrastructure – a severe negative supply shock. Food prices soared while output fell, contributing to inflation and a slowdown.
Why It Matters (2026)
Climate change increases supply shock frequency – floods, droughts, heatwaves. Geopolitical tensions threaten energy and food supplies. Supply shocks pose difficult policy trade-offs: fighting inflation (tight policy) worsens output loss.
Don’t Confuse With
Demand Shock – supply shocks hit production capacity; demand shocks hit spending.
See also
Economic Shock • Aggregate Supply • Stagflation • Oil Price Shocks • Cost-Push Inflation
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