Berlin (dpa / tmn) – Which electricity costs caused the television each year? What is the cost of operating the washing machine? An indication of the consumption is the wattage. but it indicates just how much power a device can consume a maximum. Particularly accurate is not.
“This is to determine how the average fuel consumption of a car at full throttle”. That explains Roman Zurhold of the German Energy Agency (dena). For an estimate, it was good enough
Take:. The wattage of the appliance (found mostly on a debt on the back or on the power supply), an estimate of the useful life and the price of a kilowatt hour of electricity. As an example, here keep her 100 watts, as they have larger TVs and older stereos often. “A kilowatt hour describes that one for an hour 1000 watts from the outlet concerns,” says Zurhold. This would cost 28 cents on average. A device with 100 watts of power draws a maximum of 100 watt-hours per hour, which is a tenth of a kilowatt hour. In one hour, so the equipment is causing maximum 2.8 cents electricity costs. Is it three hours a day in use, then it will cost per year at maximum capacity around 30 euros electricity – in reality somewhat smaller distance
Another example:. A smartphone PSU typically draws about 5 watts , Whoever has three hours every day at the outlet, is charged in the year 1.53 EUR electricity for it.
More exact values can be determined on measuring instruments, which are inserted between the unit and the wall socket. You are in the hardware store or partly on loan for utilities. They can be used, the consumption measured precisely.
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