Computer monitors and other electronics account for about 20 percent of an average home's electricity bills, according to the Department of Energy. Turning off this equipment when it's not in use is the best way to save energy, but it may not always be practical. As for screen savers, they don't actually save energy ("screen wasters" just didn't catch on). Instead, configure power-management features, a low-power or "sleep" mode that begins after a specified period of inactivity—like that relative who conks out within minutes of sitting down by the TV.
Energy Star computer monitors use less electricity than standard equipment—between 25 and 60 percent less—and using power management ensures that you save the most energy possible. These features don't affect performance or connectivity, and they're often set by default, but you can benefit even more by lowering the inactivity time from 60 minutes to 15, for example.
If you don't have an Energy Star monitor, worry not: You can still save money by using power management. In fact, you could
save up to $30 a year per monitor,
according to Energy Star. Power management also helps computer equipment last longer. This, combined with lower electricity consumption, reduces environmental impact.
1. Consult the manual for your devices to learn about available power-management features and considerations for using them.
2. For computers running Windows XP or Windows Vista, go to Power Options in Control Panel. Alternatively, you can use power management software, like Verdiem's Edison (Windows XP or Windows Vista) or the Energy Star's EZ Wizard (Windows 2000 or Windows XP). For Macintosh computers, go to Energy Saver in System Preferences.
3. Configure the inactivity settings. Lower the standby time to 15 minutes or less.
4. Use the equipment normally and adjust the settings as needed.
Consider using a power strip to completely
cut power to home office equipment when you are not using it. It's easier than unplugging it, and you can save even more energy.
Choose Energy Star electronics. They must meet EPA requirements for energy efficiency, including wattage used during their slumber. (Energy Star monitors must use 2 watts or less in sleep mode.)