Economic growth can reduce environmental welfare by increasing resource extraction, energy use, waste and pollution. However, its impact depends on regulation and whether growth is decoupled from resource use and environmental degradation.
This is an HL-only concept from HL.b Environmental economics. Economic growth is an increase in the total market value of goods and services, usually measured by annual percentage change in gross domestic product (GDP). Environmental welfare concerns ecosystems, natural resources and environmental services supporting human well-being.
Growth raises production and consumption, which can deplete natural capital, increase greenhouse gas emissions and generate pollution. When these costs are excluded from market prices and transferred to communities, ecosystems or future generations, this is market failure. Unequal cost distribution creates environmental justice concerns.
Growth can also finance renewable energy, efficient infrastructure, pollution control and conservation. Outcomes depend on technology, laws, incentives and societal perspectives. Eco-economic decoupling occurs when GDP grows while environmental degradation grows more slowly or declines.
| Effect of growth | Impact on environmental welfare |
|---|---|
| Greater fossil-fuel use | Increased emissions, air pollution and climate change |
| Increased extraction and consumption | Depleted natural capital and more waste |
| Clean-technology investment | Greater efficiency and lower pollution per unit of output |
| Environmental regulation | Taxes, quotas or tradeable permits internalize costs |
| Eco-economic decoupling | GDP rises while degradation slows or declines |
China’s rapid industrial growth increased coal use and air pollution. Later investment in renewable energy and pollution controls shows how growth can also finance environmental improvement.
A common misconception is that economic growth automatically improves environmental welfare. Ecological economics challenges this assumption because efficiency gains may be outweighed by rising total consumption; it may therefore support slower, zero or negative growth in high-income countries.
Exam technique: For HL discuss or evaluate, present both effects, use a named example, address justice and reach a supported conclusion.
