# 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 ?
Seven-hundred million kilowatt hours of electricity was purchased from abroad.
The 366-kilowatt rooftop system will generate 403,976 kilowatt hours of energy annually, which could save the college nearly \$50,000 in energy costs.
For example, typical monthly usage of an all electric townhouse is around 1200 kilowatt hours per month while the same townhouse with gas heat will have average monthly usage of 400 kilowatt hours of electricity and 50 therms of gas.
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.
Utilizing a total of 1,400 Kyocera KC-187G solar photovoltaic (PV) modules and 200 custom-manufactured, light-filtering PV modules, the Solar Grove generates up to 235 kilowatts(a) of electricity during peak sunlight hours, and more than 425,000 kilowatt hours per year, while shading up to 186 vehicles.
5% energy savings, resulting in projections of over 10,700 kilowatt hours in savings per year
FuelCell Energy services over 40 power plant sites around the globe that have generated more than 94 million kilowatt hours, and conducts R&D on next-generation fuel cell technologies to meet the world's ever-increasing demand for ultra-clean distributed energy.
FuelCell Energy services over 40 power plant sites around the globe that have generated more than 80 million kilowatt hours, and conducts R&D on next-generation fuel cell technologies to meet the world's ever-increasing demand for ultra-clean distributed energy.
The building was completed in 2003, and last year produced 19,500 kilowatt hours of electricity.
FuelCell Energy services over 40 power plant sites around the globe that have generated more than 70 million kilowatt hours, and conducts R&D on next-generation fuel cell technologies to meet the world's ever-increasing demand for ultra-clean distributed energy.

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