tera·​watt ˈter-ə-ˌwät How to pronounce terawatt (audio)
: a unit of power equal to one trillion watts

Example Sentences

Recent Examples on the Web For context, a terawatt is a thousand times bigger than a gigawatt. Ella Nilsen, CNN, 6 Apr. 2022 The industry can save only two to three terawatt hours by using alternative fuels. Georgi Kantchev, WSJ, 27 July 2022 By comparison, photovoltaic solar power recently exceeded one terawatt, or 1,000 gigawatts, of capacity. Jackie Snow, WSJ, 24 Apr. 2022 The system requires increasing amounts of computing power and is eating up about 137 terawatt-hours of electricity annually, more than Norway, according to an estimate by the Cambridge Center for Alternative Finance. Washington Post, 29 Mar. 2022 If Russian imports cease, Europe will need to reduce demand for gas by at least 400 terawatt-hours, or about 10% to 15% of annual demand, according to Bruegel. Julia Horowitz, CNN, 28 Feb. 2022 That process consumes the same amount of energy annually (around 78.5 terawatt-hours) as nations like Chile, Austria and Finland. Jonathan Ponciano, Forbes, 13 May 2021 According to the Cambridge Bitcoin Electricity Consumption Index, bitcoin-mining operations worldwide now use energy at the rate of nearly a hundred and twenty terawatt-hours per year. Elizabeth Kolbert, The New Yorker, 22 Apr. 2021 According to Time magazine, Ethereum mining consumes about 26.5 terawatt-hours of electricity a year, nearly as much as the entire country of Ireland. Alicia Eler, Star Tribune, 16 Apr. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'terawatt.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


tera- + watt

First Known Use

1970, in the meaning defined above

Time Traveler
The first known use of terawatt was in 1970

Dictionary Entries Near terawatt

Cite this Entry

“Terawatt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/terawatt. Accessed 5 Dec. 2022.

Kids Definition



tera·​watt ˈter-ə-ˌwät How to pronounce terawatt (audio)
: a unit of power equal to one trillion watts
Last Updated: - Updated example sentences
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