Energy consumption refers to ALL the energy used to perform an action, manufacture something or simply inhabit a building. Let's look at a few examples: In a factory, total energy consumption can be measured by looking at how much energy a production process consumes, for example, by making car parts.Cutting back on energy consumption reduces the amount of electricity that power plants have to make, subsequently reducing the amount of fossil fuels that are burned each day.When you consume less power, you reduce the amount of toxic fumes released by power plants, conserve the earth's natural resources and protect ecosystems from destruction. By taking steps to reduce your energy intake, you'll contribute to a healthier and happier world.