kilowatt-hour

noun

kilo·​watt-hour ˈki-lə-ˌwät-ˈau̇(-ə)r How to pronounce kilowatt-hour (audio)
ˈkē-lə-
: a unit of work or energy equal to that expended by one kilowatt in one hour or to 3.6 million joules

Examples of kilowatt-hour in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That’s because each kilowatt-hour of battery capacity uses about 4 kg of active materials. Matthew Dawson, Forbes.com, 7 Aug. 2025 Over the years, the threshold of electricity use flagged for inclusion in the lists dropped dramatically, from about 7,000 kilowatt-hours per month in 2014 to 2,800 kWh per month in 2023, the discovery data shows. Sacbee.com, 4 Aug. 2025 The tax credit pays eligible wind and solar facilities approximately 2.75 cents per kilowatt-hour over 10 years, effectively lowering the cost of renewable energy generation. Paul Mwebaze, The Conversation, 28 July 2025 The ComEd bill breaks out the supply costs as a separate line item that shows the number of kilowatt-hours used multiplied by the electricity rate. Robert Channick, Chicago Tribune, 28 July 2025 See All Example Sentences for kilowatt-hour

Word History

First Known Use

1892, in the meaning defined above

Time Traveler
The first known use of kilowatt-hour was in 1892

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Cite this Entry

“Kilowatt-hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/kilowatt-hour. Accessed 20 Aug. 2025.

Kids Definition

kilowatt-hour

noun
: a unit of work or energy equal to that expended by one kilowatt in one hour and equal to 3.6 million joules

Medical Definition

kilowatt-hour

noun
: a unit of work or energy equal to that expended by one kilowatt in one hour
Last Updated: - Updated example sentences
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