Kilowatt Hour (kWh)

A unit of energy or work equal to one kilowatt for one hour; e.g. a 12 kW appliance operated for 5 minutes will use 1 kWh, operated for 1 hour will use 12 kWh, or operated for 5 hours will use 60 kWh. The kilowatt hour is the most common measurement of electrical consumption, most grid connected electrical meters use this measurement for billing purposes.