What Does Kilowatt-Hour (kWh) Mean?

Kilowatt-hour (kWh) is a unit used to measure electrical energy expended or used over time. It is commonly used as a unit of electrical energy in engineering, academic and commercial applications. One kilowatt-hour is the equivalent of one kilowatt of power transferred or consumed in an hour. Generally the symbol “kWh” is used in general media publications, however “kW h” is its preferred symbol since it is consistent with SI standards.

Techopedia Explains Kilowatt-Hour (kWh)

A kilowatt-hour is equivalent to 3.6 × 106 J (3.6 megajoules) of energy. It is equivalent to one kilowatt of power that is sustained for one hour. It is basically power (P) in kilowatts (kW) multiplied by time (t) in hours (h):