KILOWATT-HOUR Definition & Meaning

kilowatt-hour

[ kil-uh-wot-ouuhr, -ou-er ]

Phonetic (Standard)IPA

noun

a unit of energy, equivalent to the energy transferred or expended in one hour by one kilowatt of power; approximately 1.34 horsepower-hours. : kWh, K.W.H., kwhr

kilowatt-hour

noun

a unit of energy equal to the work done by a power of 1000 watts in one hour kWh

kilowatt-hour

A unit used to measure energy, especially electrical energy in commercial applications. One kilowatt-hour is equal to one kilowatt of power produced or consumed over a period of one hour, or 3.6 × 10 ⁶ joules.

kilowatt-hour

A unit of energy : the expenditure of one kilowatt of power for one hour. A toaster running for an hour will use about this much energy.

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�y��vlog History and Origins

Origin of kilowatt-hour¹

First recorded in 1890–95

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Example Sentences

Examples have not been reviewed.

Energy Vault’s current systems can provide energy for about five to 10 cents a kilowatt-hour, according to Robert Piconi, the Westlake Village, California-based company’s chief executive officer.

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California’s residential electric rates, which averaged 31.2 cents per kilowatt-hour in February, are the highest in the country after Hawaii, where rates were about 44 cents, according to the federal Energy Information Administration.

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Charging costs 21 cents per kilowatt-hour, which means the typical Seattle commuter, who drives 175 miles a week, should be able to charge their EV for around $18 a week, Orenberg said.

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Residential rates are 24 cents per kilowatt-hour, compared with an average of 16 cents in the U.S. mainland.

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The average cost of an electric vehicle battery, for example, has declined from about $1,000 per kilowatt-hour in 2010 to less than $200 today.

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