Putting Your Computer to Sleep Saves Money

Leaving a single light bulb on, all day long, costs about $80 a year and emits 1,350 pounds of carbon dioxide emissions into the atmosphere. Did you know that leaving your computer on all year long also costs about the same and emits about the same amount of carbon dioxide?
Imagine leaving 10 computers on all day. Imagine leaving 50, or 5,000 computers on all day. What does this mean to you?
If you want to save money and help the environment put your computer into sleep mode – or turn it off.
Some of you might think some of this is environmental hog-wash. Read the snippet from Microsoft’s press release below and make your own judgment:
The study, “Power Consumption, Windows Vista versus Windows XP”, is based on real-world usage of desktop computers in the work environment of 800 desktop PC users. The cost savings and reduction in carbon dioxide emissions are due to the “Sleep” mode in Windows Vista, which automatically activates after one hour of non-use.
Known as Standby or Hibernate in previous versions, Sleep is a state where a machine and monitor can become available instantly if needed, but are each using only two to three watts of electricity in the meantime. While other versions of Windows have had success with standby modes, according to DeWhitt, Windows Vista’s version of Sleep provides by far the best user experience to date.
To explain the dramatic difference power management can make, the team published research that showed that a typical desktop PC and LCD monitor sitting idle for a year (outside of business hours) would consume 632 kilowatt hours of energy ó compared to 34 in sleep mode. That’s a savings of 598 kilowatt hours per PC per year.

Read the full press here.