Energy consumption

Energy consumption is the amount of energy used.

Biology
In the body, energy consumption is part of energy homeostasis. It derived from food energy. Energy consumption in the body is a product of the basal metabolic rate and the physical activity level. The physical activity level are defined for a non-pregnant, non-lactating adult as that person's total energy expenditure (TEE) in a 24-hour period, divided by his or her basal metabolic rate (BMR):


 * $$\text{PAL}=\frac{\text{TEE/24h}}{\text{BMR}}$$

Demographics
Topics related to energy consumption in a demographic sense are:
 * World energy supply and consumption
 * Domestic energy consumption
 * Electric energy consumption

Effects of energy consumption

 * Environmental impact of the energy industry
 * Climate change
 * White's law

Reduction of energy consumption

 * Energy conservation, the practice of decreasing the quantity of energy used
 * Efficient energy use