gigawatt

noun

giga·​watt ˈji-gə-ˌwät How to pronounce gigawatt (audio) ˈgi- How to pronounce gigawatt (audio)
: a unit of power equal to one billion watts

Examples of gigawatt in a Sentence

Recent Examples on the Web
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As of 2025, the total power generation capacity of the country’s 94 nuclear reactors was around 97 gigawatts (GW). Ameya Paleja, Interesting Engineering, 10 Feb. 2026 And Amazon backs x-Energy planning to build 5 gigawatts of SMR power by 2039, including about 1 gigawatt in Washington state. Jordan Blum, Fortune, 7 Feb. 2026 Davenport added that the company still has around 28 gigawatts of natural gas generation. Lisa Kailai Han, CNBC, 6 Feb. 2026 The projects that could again be reviewed are a fraction of the staggering haul of those seeking connections — more than 250 gigawatts as of Friday, or about three times its total capacity today. Bloomberg Wire, Dallas Morning News, 4 Feb. 2026 See All Example Sentences for gigawatt

Word History

First Known Use

circa 1962, in the meaning defined above

Time Traveler
The first known use of gigawatt was circa 1962

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Cite this Entry

“Gigawatt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gigawatt. Accessed 15 Feb. 2026.

Last Updated: - Updated example sentences
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