# watt-hour

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## watt-hour

[′wät ¦au̇r]
(electricity)
A unit of energy used in electrical measurements, equal to the energy converted or consumed at a rate of 1 watt during a period of 1 hour, or to 3600 joules. Abbreviated Wh.

## watt-hour

A unit of work equal to 3,600 joules; equivalent to the power of 1 watt operating for a period of 1 hour.

## watt-hour

The power utilization for one hour measured in watts. Abbreviated "Wh," it is widely used to rate how long it takes for a battery to discharge. For smaller batteries, a milliwatt-hour (mWh) rating is used. For example, a 500 mWh battery means it will release 500 watts at a specific voltage for one hour before it is discharged. See ampere-hour and watt.
References in periodicals archive ?
Conversely, households regularly consuming between 500 and 2000 kilowatt hours can expect to save anywhere from 0.
For instance, a household with an average electricity consumption of 560 kilowatt hours would save around 1 per cent.
Seven-hundred million kilowatt hours of electricity was purchased from abroad.
43 billion kilowatt hours and equates to over 85% of Intel's estimated purchased electricity needs in the US for 2011.
8 million kilowatt hours per year of clean solar energy.
The company also generates 130,000 kilowatt hours of solar power annually at its Salem, Ore.
The VendingMiser is a relatively simple device; however its ability to deliver substantial savings is powerful, reducing energy consumption by more than 1,000 kilowatt hours, or \$150-\$200 per vending machine a year.
Since 2002, Kyocera has also saved 554,000 kilowatt hours (kWh) of electricity by automating HVAC and lighting, installing variable frequency drives, and applying window tinting.
5% energy savings, resulting in projections of over 10,700 kilowatt hours in savings per year
Using Power Efficiency's patented technology, the tests showed very significant energy savings, including an amperage (current) reduction of approximately 48% and an estimated savings in kilowatt hours of approximately 35%.

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