A kilowatt is usually indicated by "kw" and a kilowatt hour by "kwh."
Ten 100-watt light bulbs burning for one hour would use one kilowatt-hour—one kwh.
This tells you the number of kwh used by the appliance during the month.
A unit used to measure energy, especially electrical energy in commercial applications. One kilowatt-hour is equal to one kilowatt of power produced or consumed over a period of one hour, or 3.6 × 106 joules.