2026-10-29 · BBC Business · English source

What we now know about the UK economy in four charts

Real-world example for IB, A-Level, AP and IGCSE Economics essays: Supply shocks, Cost-push inflation, Economic growth and the business cycle

What happened

The UK's Office for Budget Responsibility says higher energy prices will affect everything from prices and living standards to economic growth.

The economics

Energy is a key input into many production processes, so higher energy prices raise firms' costs, which may be passed on as higher prices, producing cost-push inflation; at the same time real incomes are squeezed and consumption and investment weaken, slowing growth, showing how a supply shock hits both inflation and output.

Evaluation

However, the eventual effect on inflation and growth depends on how long the shock lasts and how monetary and fiscal policy respond, so short-run and long-run outcomes differ, and the burden falls unevenly on different households and industries.

Practice question

Using this example, explain how higher energy prices act as a supply shock affecting both a country's inflation rate and its economic growth, and evaluate possible government policy responses.

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Where it fits in the syllabus

  • Supply shocks: A sudden change in supply, such as energy, food or supply-chain disruption, that moves prices and output.
  • Cost-push inflation: Higher costs of production such as wages, energy or materials lead firms to raise prices.
  • Economic growth and the business cycle: Long-run growth in real GDP and the short-run swings between expansion and recession, when output falls below potential.

中文版

发生了什么

英国预算责任办公室指出,能源价格上涨将影响物价、生活水平和经济增长。

经济学角度

能源是许多生产环节的重要投入品,其价格上涨会推高企业成本,企业可能把成本转嫁到价格上,形成成本推动型通胀;同时实际收入被压缩、消费和投资受抑,经济增长随之放缓,这体现了供给冲击如何同时作用于通胀与产出。

评估角度

但能源价格对通胀和增长的最终影响取决于冲击持续多久以及货币和财政政策如何回应,短期冲击与长期冲击的后果并不相同,而且不同家庭和行业的受损程度也不一样。

练习题

结合该例,说明能源价格上涨如何通过供给冲击同时影响一国的通胀率与经济增长,并评价政府可能的应对政策。

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