kwh

kwh — noun

1. a unit used to measure electrical energy equal to 1,000 watt-hours — for example

1.名詞B1
釋義

a unit used to measure electrical energy equal to 1,000 watt-hours — for example, the amount of electricity a 100-watt light bulb uses if it stays on for 10 hours, or the amount that appears on household electricity bills.

例句

Last month the Watanabe family used 350 kwh of electricity in their home.

number + kwh of + [energy type]

A typical solar panel on Élise's roof produces about 1.5 kwh per day.

produces + [number] + kwh

文法句型

[number] + kwh

[number] + kwh of + [energy source/use]

用法筆記

In Taiwan, 1 kilowatt-hour (1 kwh) is commonly referred to as 1 度 (dù) on household electricity bills, though the formal scientific name remains 千瓦時.

常見錯誤

❌My computer uses 1 kwh to run for a year.
✅My computer uses about 1 kwh every 8 hours of normal use.
💡A kwh measures energy over time, not power at a single moment. A computer uses roughly 0.1 kw of power; running it for 10 hours uses 1 kwh.