Kilowatt Hour

unit for measuring the consumption of electrical energy by the time of use

The watt-hour (symbol W·h or Wh) is a unit of energy. It is most commonly used on household electricity meters in the form of the kilowatt-hour (kW·h or kWh), which is 1,000 watt-hours. It is not used in the International System of Units (SI), despite being based on the watt, as the hour is not an SI unit. The SI unit of energy is the joule (J), equal to one watt-second. It is, however, a commonly used unit, especially for measuring electric energy.1 watt-hour is equivalent to 3,600 joules (1 W x 3600 s), the joule being the canonical SI unit of energy. Thus a kilowatt-hour is 3,600,000 joules or 3.6 megajoules.
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Noun
1. a unit of energy equal to the work done by a power of 1000 watts operating for one hour
(synonym) kW-hr, Board of Trade unit, B.T.U.
(hypernym) work unit, heat unit, energy unit
(part-meronym) watt-hour

One thousand watt/hours. (DOE5)

Synonyms and related words:
abampere, abcoulomb, abfarad, abhenry, abohm, abvolt, ampere, ampere-foot, ampere-hour, ampere-minute, atomerg, calorie, coulomb, dinamode, dyne, energid, erg, farad, foot-pound, henry, horsepower-hour, horsepower-year, joule, kilogram-meter, kilovolt-ampere, kilowatt, megacoulomb, megavolt, megawatt, megohm, mho, microhenry, micromho, micromicrofarad, microvolt, microwatt, milliampere, millihenry, millivolt, ohm, ohm-mile, photon, picofarad, quantum, statampere, statcoulomb, statfarad, statvolt, volt, volt-coulomb, volt-second, watt, watt-hour