Energy Saving Standards for Your Computer

Recommended Settings:

The most significant gain in energy savings comes from either having the monitor turn off after a few minutes of inactivity, and/or physically turning off the computer at night, weekends, and while you are on vacation. This also gives your computer the chance to pick up changes in your login script the next time you logon. A login script runs every time you log on to the computer. It includes updates to the virus scan to clean the latest virus threats, re-establishes network connections to the B&F network domain and other useful updates to your system.

Power Management Setup Instructions:

Windows 2000

  1. From the Start menu, select Settings, then Control Panel.
  2. Double click the Display icon in the Control Panel window.
  3. In the Display Properties dialog, click the Screen Saver tab, and then click the Power… button in the Energy saving features of monitor section.
  4. On the Power Schemes tab, select Home/Office Desk. (Note: Some of the options shown here, such as System Standby and System Hibernates, may not appear on your computer. If this is the case, on the Hibernate tab, select Enable hibernate support then click Apply.) The options available may vary depending on your computer's capabilities.
  5. Set Turn off monitor: after 10 mins.
  6. Set Turn off hard disks: never.
  7. Set System standby:30 mins .
  8. Set System hibernates: after 2 hours.
  9. Click OK

Windows XP

  1. From the Start menu, select Control.
  2. If you are using the Classic View, double click the Power Options icon in the Control Panel window. If you are using the Category View, click on Performance and Maintenance and then click on Power Options.
  3. Under Power Schemes, select Home/Office Desk. (Note: Some of the options shown here, such as System Standby and System Hibernates, may not appear on your computer. If this is the case, on the Hibernate tab, select Enable hibernate support then click Apply.) The options available may vary depending on your computer's capabilities.
  4. Set Turn off monitor: after 10 mins.
  5. Set Turn off hard disks: never.
  6. Set System standby:30 mins .
  7. Set System hibernates: after 2 hours.
  8. Click OK

Frequently Asked Questions (FAQs) about Power Management

What Is Power Management?
Power management allows your computer and it's components to enter low-power states when sitting idle to save energy. If you will be away from the computer for an extended time, such as overnight, weekends or vacation, shutdown your computer and turn your monitor off.

Why Should I Use Power Management?
According to the EPA, close to half the energy consumed by computers and monitors is wasted because 63 percent of computers and monitors are left on at night and 44 percent of monitors are not enabled for power management. Enabling monitor power management practices could save approximately 200 kWh per year per monitor. At an average electricity cost of 10¢ per kWh, this amounts to $20 per year saved. Multiply this by the number of computers in the University system (15,000-18,000 campus wide), and a significant savings can bee seen. In addition, turning off computers at night doubles these savings.

How can I tell if my monitor is enabled for power management?
If your screen goes blank after a period of inactivity, your monitor power management is enabled. You can also check monitor power management status by going to the Display properties of your desktop and look at the Power options on the Screen Saver tab.

How long do I have to wait for my monitor to recover?
Move your mouse or press any key on your keyboard to "wake up" your monitor or computer. Recovery time indicates the type of power mode. If recovery from the blank screen is instantaneous, the monitor or computer is likely in standby or sleep mode. If 10 seconds or so are required for recovery, it is likely it's in the suspend mode.

Does monitor power management affect receipt of e-mail or downloading of files from the Internet?
If monitor power management is enabled, the screen may go blank during long download sessions due to mouse and/or keyboard inactivity. However, this will not interrupt the download operation. Power management also does not affect receipt of e-mail.

Does power management affect the useful life of my computer or monitor?
Power management does not have a negative effect on the useful life of computers and monitors. On the contrary, when equipment powers down, it generates less heat, collects less dust, and reduces mechanical stress, promoting a longer and more reliable life for the computer and monitors.

Why does power management, enabled for my monitor, appear not to be working?
Some monitors, even after power management has been enabled, may not enter sleep mode because they may be incapable of power management, or a screen saver may be interfering with power management operation.

Why does my monitor wake up a few minutes after going to sleep?
Some screen savers can cause this. We recommend that you configure your monitor to power-down as apposed to using a screen saver.

Do screen savers save energy?
No. Screen savers were originally developed to prevent the permanent etching of a pattern on older monochrome monitors caused by a single image projected over a long period of time. Screen savers prevented this by either blanking out the screen entirely or by displaying a constantly moving image to save the screen. Modern display screens do not suffer so much from this problem so screen savers are mostly an adornment. We recommend that you configure your monitor to power-down as apposed to using a screen saver.

How can I save energy if power management is not possible on my monitor?
If power management is not possible, you can switch off the screen when not in use for prolonged periods. This will save 50-70% of the power used by the computer. During non-use hours, such as nights and weekends, you can turn off both your monitor and your computer, which reduces energy use to near zero.

Please remember to shut down personal computers on weekends and during extended absences.