One kilowatt hour is defined as?

One kilowatt-hour is equal to the work done or energy consumed when a device of power 1 kW is used for 1 hour.

What is a kilowatt-hour?

A measure of electrical energy equivalent to the power consumption of one thousand watts for one hour. A kilowatt-hour is an energy unit equivalent to one kilowatt of power sustained for one hour or 3600 kilojoules (3.6 megajoules).

  • The SI symbol for kilowatt-hour is kWh or kW h
  • It is frequently written as kWh)

Uses

Electric utilities frequently utilise it as a billing unit for energy delivered to customers. The energy outputs of large power plants over long periods of time, or the energy consumption of states or nations, can be expressed in gigawatt-hours (GWh), where 1 GWh = 1,000 MWh = 106 kWh.
check out the video for more information on physical quantities, measurements and units

Further reading

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