2.3 Energy Demand

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What Is Energy Demand?

Energy demand means the total amount of energy that people, businesses, and countries need and use. Think of it like a shopping list — the more things you need, the longer your list. Energy demand works the same way: the more activities a country or person carries out, the more energy they require.

Energy is used for many things: heating homes, running factories, powering vehicles, and charging phones. Different factors — things that have an effect — cause energy demand to be higher or lower.

Factor 1: Domestic Demand

Domestic demand refers to the energy used in people's homes (the word "domestic" simply means relating to the home).

Inside a typical home, energy is used for:

• Heating and cooling — keeping rooms warm in winter or cool in summer using boilers, radiators, fans, or air conditioning.
• Lighting — switching on lights in every room.
• Cooking — using ovens, hobs, and microwaves.
• Appliances — washing machines, fridges, dishwashers, televisions, and computers all use electricity.
• Hot water — heating water for showers and baths.

The more people living in a country, the greater the domestic demand for energy. Similarly, if people's homes are larger, or if they own more electrical appliances, they tend to use more energy.

Key point: As families become wealthier and buy more gadgets and appliances, domestic energy demand goes up.

Factor 2: Industrial Demand

Industrial demand is the energy used by factories, manufacturing plants, and businesses that make or process things (industry = factories and large-scale production).

Industries use huge amounts of energy for:

• Running heavy machinery — machines that cut, shape, press, or assemble products need a lot of power to operate.
• Heating and cooling processes — for example, steel-making requires enormous heat to melt metal; food processing may need refrigeration.
• Mining and extraction — digging up raw materials like coal, oil, and metal ores requires powerful equipment.
• Lighting and powering large buildings — warehouses, factories, and offices need electricity to function.

Countries with many large factories and industries use far more energy overall than countries that are mainly agricultural (farming-based). This is why more developed, industrialised countries tend to have much higher energy demand.

Key point: The more industries a country has, the higher its energy demand. Heavy industries like steel, cement, and chemicals are especially energy-intensive (they use a lot of energy).