Energy Saving in our PC

Working with personal computer consumes considerable amount of energy. But, I often see that this energy is wasted by user, including myself. We often leave PC on for minutes or even hours doing nothing. If a PC consumes 100 Watt and left on a hour per day, we can calculate how much energy wasted in one year, and how much money wasted in electrical bill. 

Making a PC more energy efficient is not a difficult task. Never left it on without work! If we often forget to shut it down, or often fall asleep in front of our PC, please set it to standby automatically. All Operating Systems has ability to stand by or hibernate automatically when left without work for several minutes, just turn on this service. 
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