Watt-hour
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A unit of energy. One watt-hour is the amount of electrical energy equivalent to a one-watt load drawing power for one hour, or a one-watt generator producing power at capacity for one hour. The kilowatt-hour (kWh) is equal to 1000 watt-hours, and the Megawatt-hour (MWh) is equal to 1000 kilowatt-hours or 1 million watt-hours.
