Power consumption
From Wikipedia, the free encyclopedia
In electrical engineering, power consumption refers to the electrical energy over time that must be supplied to an electrical appliance to maintain its operation. The power consumption is usually a result of power used to perform the intended function of the device plus additional "wasted" power that is dissipated as heat, vibration and/or electromagnetic waves.
Power consumption is usually measured in units of kWh using a kWh or electric meter.