Should You Turn Off a Computer at Night to Save Energy?

Using less energy saves electricity and money.

Turning Off Your Computer Saves Energy

Turning off anything that consumes electricity will save your money, and your computer is no exception. While on, a desktop computer uses 65 to 250 watts and the monitor uses 17 to 80 watts depending on the size and type. Turning just your monitor off outside a 40-hour work week can save $50 a year.

Some Disadvantages Exist

The amount of energy saved from turning off your computer may be negligible compared to other energy-saving improvements you can make. For very old computers, turning off the system regularly can reduce the life of the hardware. Also, some people rely on their computer as their main means of communication, and turning off the computer could delay important messages.

Bottom Line

There is a definite monetary advantage to turning your computer off at night, but that must be weighed against the inconvenience of waiting as well as other disadvantages. For most people, turning off the computer at night is an easy way to save energy and money.

References

• Energy Savers: When to Turn Off Personal Computers
• Computing @ U-W Madison: Turn Off Your Monitor to Save Energy? Do it.
• Energy Star: Frequently Asked Questions
• Saving Energy: How Much Electricity Does My Computer Use?