Electrical energy is a type of energy related to forces on electrically-charged particles and the movement of those particles. It is a form of kinetic energy caused by moving electric charges, and the amount of energy depends on the speed of the charges. Electrical energy is supplied by the combination of current and electric potential that is delivered by a circuit. The movement of charged particles along a medium, such as a wire, constitutes current or electricity. Electrical energy can be converted to other forms of energy, such as thermal, motion, sound, light, and radio waves.
Electricity generation is the process of generating electrical energy from other forms of energy, such as coal, natural gas, nuclear energy, solar energy, and wind energy. An electric generator is a device that converts a form of energy into electricity. Electrical power is the rate of transfer of electrical energy by an electrical circuit per unit time. The unit of electrical energy is the watt-hour (Wh), which is equal to the energy of one watt steadily supplied to, or taken from, an electric circuit for one hour.
Examples of electrical energy in action include lightning, batteries, electric eels, and electric trains. Electrical energy is an important concept in science, and it is frequently used in calculations.
