Kilowatt-hour
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A kilowatt-hour is a non-SI unit of energy equal to 3.6 megajoules in SI units, which is the energy delivered by one kilowatt of power for one hour.
Residential electricity meter located in Canada
Watt
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The watt is the unit of power or radiant flux in the International System of Units, equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named in
Kilowatt-hour
…symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy equal to 3.6 megajoules (MJ) in SI units, which is the energy delivered by one kilowatt of power for one hour. Kilowatt-hours are a common billing unit for electrical energy supplied by electric utilities. Metric prefixes are used for…
A 420-watt power supply