Power
The rate at which electrical energy is transferred by an electric circuit refers to electric power with the SI unit, watt. The distribution of electrical power is via cables and electricity pylons where the electric current that flows in a circuit can transfer energy to exhibit mechanical or thermodynamic work. Certain devices convert electrical energy into many useful forms such as heat, light, motion, sound, or chemical changes that could be attributed to appliances or equipment such as heaters, light bulbs, motors, loudspeakers, etc.
Kennicott, Alaska Electric Power Plant
In addition, electricity can be produced mechanically by generation, or chemically, or by direct conversion from light in photovoltaic cells. Photovoltaic cells can be stored chemically in the form of batteries.
