The computers we all use day in and day out are huge energy wasters, unless we know how to manage them responsibly. Using sleep mode, avoiding screensavers, and remembering to always shut down your computer when you aren’t using it for an extended period of time, are all small actions that have big benefits.
The University of Vermont reports that if 8,000 computer users activated sleep mode on a regular basis, there would be a total savings of 1.6 million kWh per year. This is equivalent to blocking the annual emissions of 150 cars, or planting 367 acres of trees. Sleep mode does no damage to your computer; it simply turns off your monitor after a period of inactivity. Pressing a key or clicking the mouse reactivates the monitor. Additionally, screensavers do not save energy, contrary to popular myth. In fact, graphically complex screensavers can actually use twice as much energy as the computer would use without a screensaver. And don’t forget to turn your computer off when you aren’t returning to it soon! A desktop computer left on for a full year would release 1500 pounds of carbon dioxide into the atmosphere, says the Harvard Green Campus Initiative. It would take up to 500 trees to offset that amount of carbon. Just by changing your computing habits, you can save significantly on pollution and energy costs.
Take Action / Next Steps
Check out the Energy Star website for more guidelines and tips about power management techniques.
Did you know that you can save $75 or more per computer just by using energy saving features?
Another great reason to use your computer’s energy saving features is the money it will
save you. The Energy Star program reports that just by using sleep, standby, or hibernate features you can save $75 per
computer annually.
Did you know that screensavers are horrible energy wasters?
You’d never think it, but,
according to Nicholas Carr, if 5,000 PCs run screensavers for 20 hours a week, they’ll emit “750,000 pounds of
carbon dioxide, 5,858 pounds of sulfur oxide, and 1,544 pounds of nitrogen oxide.” Those are big numbers just for
some pretty moving pictures on your screen!
Did you know that using sleep mode on just 8,000 computers
can save the equivalent of 68,000 gallons of gasoline per year?
The University of
Vermont states that this savings is equal to $160,000 in energy costs.