Industry and Energy

About this topic

Industry is divided into sectors: primary (extracting raw materials such as farming, mining and fishing), secondary (manufacturing), tertiary (services) and quaternary (research and knowledge). As countries develop, the economy shifts from primary toward tertiary: in many low-income countries most workers farm, while in the UK or US the large majority work in services. Factories locate based on raw materials, labour, transport, markets, power and government policy.

Historically, steelworks sat near coalfields and iron ore; today light industries such as electronics choose sites by labour cost, skills and transport links. Deindustrialisation in Europe and North America followed as companies moved production abroad. Manufacturing has moved to Asia in recent decades, and China became known as the workshop of the world.

Energy mix: fossil fuels still dominate, but renewables such as solar, wind and hydroelectric power are growing quickly. Energy security, cost and climate goals drive policy, and countries balance reliable supply with emissions. Industrial pollution and waste require regulation and cleaner technologies. A common misconception is that renewable energy is perfectly clean: it has smaller footprints but still needs land, materials and storage, so a balanced mix and efficiency savings are important.