Laptops, notebooks or netbooks generally use less power than desktop computers, because they are designed to run on a battery and to be more power efficient. Furthermore laptops rarely have a powerful video card and often use integrated graphics instead, which requires less electricity. The power consumption of a laptop depends on the screen size, typically you will find power consumption as low as 20 watts and up to 100 watts when running off the battery. When charging the laptop battery power consumption will increase 10 to 20 percent, we estimate that 60 watts is average power consumption for a 14-15 inch laptop when plugged in.
Click calculate to find the energy consumption of a 14-15 inch laptop that is using 60 Watts when plugged in for 6 hours a day @ $0.10 per kWh.
Hours Used Per Day: Enter how many hours the device is being used on average per day, if the power consumption is lower than 1 hour per day enter as a decimal. (For example: 30 minutes per day is 0.5)
Power Use (Watts): Enter the average power consumption of the device in watts.
Price (kWh): Enter the cost you are paying on average per kilowatt hour, our caculators use the default value of 0.10 or 10 cents. To find an exact price check your electricity bill or take a look at Global Electricity Prices.
Laptops, notebooks and netbooks are a great choice for computers if you are interested in lower power consumption, plus they have a benefit of mobility. Similar to desktop computers enabling power saving features such as sleep or standby modes will reduce the energy use of your portable computer.
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