watt-hour
noun
: a unit of work or energy equivalent to the power of one watt operating for one hour
Examples of watt-hour in a Sentence
Recent Examples on the Web
The story mentions some rough estimates on the watt-hours used to execute a text, image, and video prompt on some models.
—
Jeff Marks, CNBC, 26 June 2025
According to a Goldman Sachs report on data center power, a Google search consumes 0.3 watt-hours of electricity; one ChatGPT search consumes 2.9 watt-hours.
—Emily Forlini, PC Magazine, 22 Apr. 2025
For comparison, lithium-ion batteries can only store up to 180 watt-hours.
—Nadezhda Kosareva, Forbes, 30 Dec. 2024
Air Asia: Guests may only carry power banks that do not exceed 100 watt-hours (Wh) or 20,000 milliampere-hours (mAh).
—Kathleen Magramo, CNN Money, 26 Mar. 2025
Running the model on two Ampere GPUs resulted in 0.32 watt-hours per request, compared to just 0.15 watt-hours on one Hopper GPU.
—Ars Technica, 24 Mar. 2025
Zhu says Lenovo is targeting between two and 2.5 hours of battery life in demanding heavy games — which lines up with the basic math of dividing a 55 watt-hour battery by 20 watts, assuming the rest of the system doesn’t eat up a lot more.
—Sean Hollister, The Verge, 7 Jan. 2025
Remarkably, during 2023 Maryland’s entire fossil fuel industry generated 16.7 TWh (trillion watt-hours) of electric power.
—Alex Pavlak, Baltimore Sun, 6 Jan. 2025
Graphene has a phenomenal capacity, up to 1,000 watt-hours of energy per kilogram.
—Nadezhda Kosareva, Forbes, 30 Dec. 2024
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Jeff Marks, CNBC, 26 June 2025
According to a Goldman Sachs report on data center power, a Google search consumes 0.3 watt-hours of electricity; one ChatGPT search consumes 2.9 watt-hours.
—Emily Forlini, PC Magazine, 22 Apr. 2025
For comparison, lithium-ion batteries can only store up to 180 watt-hours.
—Nadezhda Kosareva, Forbes, 30 Dec. 2024
Air Asia: Guests may only carry power banks that do not exceed 100 watt-hours (Wh) or 20,000 milliampere-hours (mAh).
—Kathleen Magramo, CNN Money, 26 Mar. 2025
Running the model on two Ampere GPUs resulted in 0.32 watt-hours per request, compared to just 0.15 watt-hours on one Hopper GPU.
—Ars Technica, 24 Mar. 2025
Zhu says Lenovo is targeting between two and 2.5 hours of battery life in demanding heavy games — which lines up with the basic math of dividing a 55 watt-hour battery by 20 watts, assuming the rest of the system doesn’t eat up a lot more.
—Sean Hollister, The Verge, 7 Jan. 2025
Remarkably, during 2023 Maryland’s entire fossil fuel industry generated 16.7 TWh (trillion watt-hours) of electric power.
—Alex Pavlak, Baltimore Sun, 6 Jan. 2025
Graphene has a phenomenal capacity, up to 1,000 watt-hours of energy per kilogram.
—Nadezhda Kosareva, Forbes, 30 Dec. 2024
Cite this Entry
“Watt-hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watt-hour. Accessed 3 Jul. 2025.
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