What is a kWh? kW and kWh electricity costs explained OVO Energy
kW stands for kilowatt, which is a measure of how much power an appliance needs to run. A kilowatt is 1,000 watts. For example, a 1,000 watt vacuum cleaner is also a 1 kW vacuum cleaner. kWh stands for kilowatt hour (kWh) it's the way we measure energy in the home. 1 kilowatt hour is the amount of energy it takes to run a 1,000 watt (or ...