The Basics
- Simple definition: The total quantity of goods and services that firms in an economy are willing and able to produce at a given price level.
- Core idea: The economy’s production side – what businesses can and will produce.
- Think of it as: The economy’s total output capacity.
What It Actually Means
Aggregate supply has two versions: short-run and long-run. Short-run AS slopes upward – higher prices induce more production as profits rise. Long-run AS is vertical at potential GDP – determined by resources, technology, institutions, not prices. Shifts in AS come from changes in costs (oil prices, wages), technology, labor force, capital stock, or productivity. Supply shocks shift AS, affecting both output and prices.
Example
If global oil prices spike, Pakistani firms face higher energy costs – short-run AS shifts left, meaning less output at the same prices, causing stagflation (lower growth, higher inflation).
Why It Matters (2026)
Supply chain disruptions, energy prices, and climate events keep shifting AS. Policies to expand AS – education, infrastructure, technology – boost long-term growth. Pakistan’s energy crises have repeatedly contracted AS.
Don’t Confuse With
Aggregate Demand – AS is production capacity; AD is spending.
See also
Aggregate Demand • Supply Shock • Potential GDP • Production Function • Stagflation
Read more about this with MASEconomics: