Translations:Electricity and energy/36/en
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Power is a quick look at how much energy is being consumed or produced. For an electrical system this is an important value, but it is equally important to understand power consumption over time. Energy consumption over time is measured in watt-hours (Wh) or kilo-watt-hours (kWh). A watt-hour is the consumption of 1W of power for 1 hour. The formula for calculating Watt-hours is simple: