It should be. The EPA has worked with manufacturers of office equipment (including PCs and Monitors) so that much new equipment can enter low-power ("sleep") modes when not in active use. This has the potential to save significant amounts of energy, but only when the feature is properly enabled and working. The Building Energy Analysis Group has produced a "User Guide" to help people understand how power management works, how to enable it, and how to troubleshoot common problems.
April 15, 1997