This revision short looks at some of the Micro & Macro Effects of UK Subsidies for Renewable Energy

Microeconomic Effects (UK-Focused)

⚡ Lower Production Costs (Supply Curve Shift): Subsidies reduce the private costs for renewable generators like wind and solar. This causes the supply curve to shift right, lowering prices and increasing the quantity of clean electricity supplied.

In 2023, wind, solar, and hydro made up 36.1% of GB electricity, with wind alone accounting for 29.4%.

🌍 Internalising Positive Externalities: Renewables generate positive externalities—such as lower pollution and improved health—which are underprovided in a free market. Subsidies help correct this market failure, moving output closer to the social optimum.

🔥 Reduced Dependence on Polluting Fuels: Subsidies make clean energy more competitive vs fossil fuels, which produce negative externalities like air pollution.

WHO data shows fossil fuel pollution caused $2.9tn in global costs and contributes to over 13 million avoidable deaths annually.

Macroeconomic Effects (UK-Focused)

📈 Stimulus to Investment & Jobs (AD Boost): Higher subsidies encourage capital investment and job creationin sectors like wind farm construction, maintenance, and green tech. This raises aggregate demand (AD) in the short run.

💷 Long-Run Growth & Energy Security (LRAS): Expansion of renewables improves dynamic efficiency and long-run aggregate supply (LRAS) through innovation and scale. Reduced reliance on imported fossil fuels also enhances UK energy security.

🧑‍⚕️ Health Gains & Fiscal Benefits: Cleaner air from less fossil fuel use reduces illness and NHS costs, raising labour productivity and freeing up public spending for other priorities.

WHO: 99% of the world’s population breathes unsafe air; air pollution costs the global economy $8bn/day.