What does 1 KWh mean?

►The kilowatt-hour (symbolized KWh) is a unit of energy equivalent to one kilowatt (1 KW) of power expended for one hour (1 h) of time. The kilowatt-hour is not a standard unit in any formal system, but it is commonly used in electrical applications.

►One kilowatt-hour (KWh) is the electrical energy consumed by an electrical appliance of power 1 KW when it is used for 1 hour.

►It is used as the commercial unit of electricity.