If the monitor is switched off completely, then of course it does not use any power.Īlthough the internet is a virtual space, using it still requires power and results in CO 2 emissions. Putting the monitor on stand-by reduces its consumption by 15%. On stand-by, the power consumption of both a desktop and a laptop computer falls to about a third. That corresponds to CO 2 emissions of between 44 and 88 kg per year (or between 0.44 and 0.88 % of the average annual emission of a Belgian). If it is used for eight hours a day, consumption therefore varies between 150 and 300 kWh/year. ![]() 1.75 % of the average annual emission of a Belgian.Ī laptop uses considerably less: between 50 and 100 Wh that it is on, depending on the model. That corresponds to CO 2 emissions of about 175 kg per year, i.e. Assuming that a computer is on for eight hours a day, the annual consumption comes to 600 kWh. ![]() This is the sum of the average consumption per hour of the computer itself (171 W), the internet modem (10 W), the printer (5 W) and the loudspeakers (20 W). ![]() For instance, a laptop only uses a third as much as a desktop:Ī complete desktop uses an average of 200 Watt hours (Wh). The power consumption of a computer of course depends on the model and the way it is used. Remember that stand-by mode uses power, too!
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