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gigawatt

American  
[gig-uh-wot, jig-] / ˈgɪg əˌwɒt, ˈdʒɪg- /

noun

  1. one billion watts. GW, Gw


Etymology

Origin of gigawatt

First recorded in 1960–65; giga- + watt

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

A single reactor will generate just 15 megawatts, enough to power about 12,000 homes, but Muller envisions an array of 100 or more, providing more than a gigawatt, enough for a data center.

From The Wall Street Journal Jul. 28, 2026

The £1.5 billion "repowering" project will take 10 years to complete and will double the electricity output from 539 megawatts to 1 gigawatt, which is enough to power about 650,000 homes.

From BBC Jul. 22, 2026

But the French firm has targeted 200 megawatts of capacity by 2027 and aims by 2030 to reach one gigawatt -- roughly equivalent to the output of one of France's dozens of nuclear reactors.

From Barron's Jul. 21, 2026

Tesla on Thursday will also give an update on second-quarter energy storage deployments, which Wall Street expects to come in at 13.8 gigawatt hours, a big bump from the prior quarter.

From MarketWatch Jul. 1, 2026

“Why do we need a nine gigawatt data center in one of the driest states in the nation that’s in a severe drought,” Caroline Gleich, an environmentalist and professional skier, asked.

From Salon Jun. 12, 2026

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