ENERGY STAR products are independently certified to save energy without sacrificing features or functionality. Saving energy helps prevent climate change. Look for the ENERGY STAR label to save money on your energy bills and help protect our environment.
Improving your home's energy efficiency with ENERGY STAR can help to lower high energy bills, improve comfort and reduce greenhouse gas emissions. Learn about the many ways to save in your home and track your progress with "My ENERGY STAR" - your new dashboard to savings.
A new home that has earned the ENERGY STAR label has undergone a process of inspections, testing, and verification to meet strict requirements set by the US EPA. ENERGY STAR certified homes use 15-30% less energy than typical new homes while delivering better comfort, quality, and durability.
Improve financial performance and reduce carbon emissions with EPA's strategic energy management approach.
Follow the instructions below for Mac OS X Version 10.4, nicknamed "Tiger". Steps for activating sleep settings in other versions of OS X will be very similar.
EPA recommends setting computers to enter system standby or hibernate after 15 to 60 minutes of inactivity. To save even more, set monitors (displays) to enter sleep mode after 5 to 20 minutes of inactivity. The lower the setting, the more energy you save. The "Put the hard disk(s) to sleep when possible" setting does not save much power, and can be ignored.