Kilowatt-hour is a unit of____________?

Kilowatt hour is the unit of ENERGY.\nWatt or Kilowatt is the unit of power.\nKilowatt-hour (KWh) is unit of Electrical Energy.\nWe know that, Power×time=Energy\n⇒ Kilo-Watt×Hour=Energy\n1KWh is electrical energy consumed when an electrical equipment of power 1 KiloWatt is operated for 1 Hour.\nIt is also used as commertial unit of energy in households/Buildings/Factories etc where 1 Unit of electricity is equivalent of 1KW-h of energy.