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 ?
Greenstone Mayor Michael Power, the president of the Northwestern Ontario Municipal Association, (NOMA) called the policy a "really good first step" but says it falls short of his group's stated goal of a $45 per megawatt hour "all-in" energy plan for industry.
The average hedged price for MWG was $48 per megawatt hour for MWG for both the remainder of 2006 and full-year 2007 and $54 per megawatt hour for HC for the remainder of 2006 and $64 for calendar year 2007.
2 million megawatt hours of electricity during the second quarter of 1999, compared with 40 million megawatt hours during the same period in 1998.
495 million megawatt hours of electricity from wind power plants, corresponding to 2.
The country's electricity generation capacity currently stands at 70,000 megawatt hours, but it's not enough," Falahatian said.
Haeri said in November that Iran's total solar power plant production capacity currently stands at 70,000 megawatt hours.
The final rule also removes Footnote 1 from SBA's Table of Size Standards, which stated that a firm was small if it, including its affiliates, was primarily engaged in the generation, transmission, and/or distribution of electric energy for sale and its total electric output for the preceding fiscal year did not exceed 4 million megawatt hours.
Energy usage for the four days the four days of 2004 Republican National Convention is estimated by ConEdison Solutions to total 474 megawatt hours (MWH), enough energy to cover the annual electricity usage of approximately 110 typical New York City residences.
The actual megawatt hours procured will depend on several factors, including the cost to customers.
It argued that accreditation could be offered for megawatt hours sold in Australia, while the wind energy sector said it should only be for megawatt hours produced in Australia.
To put each project's generation capacity into context, an average home in Pennsylvania uses approximately 10 megawatt hours, or 10,000 kilowatt hours, of electricity annually.
The Northern Pulp and Paper Electricity Program will deliver quarterly electricity price rebates to pulp and paper mills that purchase a minimum of 50,000 megawatt hours annually and commit to increased energy efficiency.