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.
The Padres say the project was completed later in 2018, that the solar canopy produces more than 1 million kilowatt-hours of renewable electricity per year and is the largest solar project in Major League Baseball. Rob Nikolewski, San Diego Union-Tribune, 11 Feb. 2026 In 2024, the average retail price for electricity in California was 27 cents per kilowatt-hour, more than twice the national average. Bret Stephens, Mercury News, 5 Feb. 2026 Industrial electricity prices surged 124% between 2019 and 2024 — quadruple the U.S. increase — leaving the UK with the highest rates in the Western world at 37 cents per kilowatt-hour. Bjorn Lomborg, Boston Herald, 5 Feb. 2026 Electric SUVs and pickup trucks from Rivian, where Elias also worked, can fit 7,776 cylindrical batteries into a brawny, 135 kilowatt-hour pack. IEEE Spectrum, 3 Feb. 2026 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 16 Feb. 2026.

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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