| kil·o·watt-hour (kĭl'ə-wŏt-our') n. Abbr. kWh or kW-hr A unit of electric energy equal to the work done by one kilowatt acting for one hour. |
| kilowatt-hour
A unit used to measure energy, especially electrical energy in commercial applications. One kilowatt-hour is equal to one kilowatt of power produced or consumed over a period of one hour, or 3.6 × 106 joules. |