Save energy on your Mac
Your Mac is designed to be energy efficient right out of the box, using features like Compressed Memory and App Nap to stay fast and save power. However, there are several ways you can further optimise energy usage.
Put your Mac to sleep
When in sleep, your Mac is still turned on, but it consumes much less energy. And waking your Mac from sleep takes less time than starting it up.
Put your Mac to sleep right away: On your Mac, choose Apple menu > Sleep. See Put your Mac to sleep or wake it.
Set your Mac to go to sleep after a period of inactivity: Follow the instructions in Schedule your Mac desktop computer to turn on or off.
Dim the display
Dim the display to the lowest comfortable level. For example, the display can be dimmer when you’re in a dark room than when you’re in bright sunlight.
Turn off Wi-Fi and Bluetooth
Turn off Bluetooth and Wi-Fi if you don’t need them. They consume energy even when they aren’t used.
Turn off Bluetooth: On your Mac, choose Apple menu > System Preferences, then click Bluetooth.
If Bluetooth is turned on, click Turn Bluetooth Off.
Turn off Wi-Fi: On your Mac, choose Apple menu > System Preferences, then click Network.
Select Wi-Fi in the list on the left. If Wi-Fi is turned on, click Turn Wi-Fi Off.
Disconnect devices and close apps
Accessories: Disconnect any accessories that you aren’t using, such as external hard drives.
CDs, DVDs and connected external drives: Eject any CDs or DVDs you aren’t using. If you use an external drive, such as an Apple USB SuperDrive, disconnect it from your Mac.
Apps: Quit apps that you aren’t using. Even an app you aren’t using may be working in the background and consuming energy.
Get the most from your battery
On your Mac, choose Apple menu > System Preferences, click Battery, then click Battery or Power Adapter.
You can choose different sets of options depending on whether your Mac is plugged in. For example, you can choose to dim your display and put your Mac in sleep mode sooner when it’s using its battery. See Optimise energy settings for a Mac notebook.
Select other energy-saving options
In Energy Saver preferences, choose options that make it easier to save energy. For example, if you allow other computers to access the shared resources on your Mac — such as shared printers or Music playlists — while it’s in sleep, you may be able to put your Mac to sleep more often.
On your Mac, choose Apple menu > System Preferences, then do one of the following:
If you’re using a Mac desktop computer: Click Energy Saver.
If you’re using a Mac notebook: Click Battery.
For more information, see Set sleep and wake settings for your Mac.