Apple and the Environment

Your computer’s energy consumption has a noticeable impact on your electricity bill. Our interactive calculator shows how much money you can save each year by using the Energy Saver feature on your Mac. Note that all calculations are approximate and based on computer use during active-on and sleep modes.

Included with the Mac OS X operating system, the Energy Saver feature is accessed in System Preferences. It enables you to configure sleep mode parameters, schedule system shutdown and startup, and specify wake options to minimize the computer’s energy consumption. Since all Mac computers are shipped with Energy Saver enabled, Apple saves you money right out of the box.

Energy Usage Calculator
Select product	Number of hours/day being used in active-on mode	Number of days/week being used in active-on mode	Unit electricity cost in your region $/Kwh
	2 4 6 8 10 12 14 16 18 20 22 24	1 2 3 4 5 6 7	0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40
Annual cost of computer running 24/7 with no energy-saving features $/yr*	Annual cost with Energy Saver** enabled $/yr	Total Savings $/yr	% saving from Energy Saver feature

* On-mode power consumption used for calculation of “Annual cost of computer running 24/7 with no energy-saving features $/yr.”

** Sleep-mode power consumption used for calculation of “Annual cost with Energy Saver enabled $/yr.” All Apple systems are shipped with Energy Saver enabled.