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===Meaning===
A '''kilowatt-hour''' is a [[unit]] of [[energy]] used for [[Electrical Appliance|electrical appliances]] and in [[Electrical Bill|electrical bills]].
===About kilowatt-hours===
: The '''kilowatt-hour''' is used by electricity suppliers instead of [[Joule]]s.
: A '''kilowatt-hour''' is 3,600,000 [[Joule]]s.