Set sleep and wake times for your Mac
You can set your Mac to go to sleep after a specified duration of inactivity. You can also set your Mac to go to sleep and wake up at a specific time.
Specify sleep and wake settings for a desktop Mac
Note: Some of the options may not be available, depending on your Mac.
On your Mac, choose Apple menu
> System Preferences, then click Energy Saver.Do any of the following:
Set the amount of time your computer or display should wait before going to sleep: Drag the “Computer sleep” and “Display sleep” sliders, or the “Turn display off after” slider.
Keep your Mac from going to sleep automatically: Select “Prevent computer from sleeping automatically when the display is off.”
Put hard disks to sleep: Select “Put hard disks to sleep when possible.”
Keep your Mac turned on whenever power is available: Select “Start up automatically after a power failure.”
Allow your Mac to wake briefly so users can access shared services (if applicable): Select any of the available “Wake for…” options, for example, “Wake for network access.”
See Share your Mac resources when it’s in sleep and the Apple Support article About Wake on Demand and Bonjour Sleep Proxy.
Specify sleep and wake settings for a portable Mac
Note: Some of the options may not be available, depending on your Mac.
On your Mac, choose Apple menu
> System Preferences, then click Energy Saver.Do any of the following:
Switch between graphics modes: Select “Automatic graphics switching” to switch between graphics modes automatically for better battery life.
Set sleep times for when you’re using your portable computer’s battery: Click Battery, then drag the “Computer sleep” and “Display sleep” sliders, or the “Turn display off after” slider.
Set sleep times for when you’re using your portable computer’s power adapter: Click Power Adapter, then drag the “Computer sleep” and “Display sleep” sliders, or the “Turn display off after” slider.
Keep your Mac from going to sleep automatically: Select “Prevent computer from sleeping automatically when the display is off” in the Power Adapter pane.
Put hard disks to sleep: Select the “Put hard disks to sleep when possible” option in the Battery or Power Adapter pane.
Keep your display dimmed while using your battery: Click Battery, then select “Slightly dim the display while on battery power.”
Update your system while it’s asleep: Select “Enable Power Nap while on battery power” in the Battery pane, and “Enable Power Nap while plugged in to a power adapter” in the Power Adapter pane.
Allow your Mac to wake briefly so users can access shared services (if applicable): Select any of the available “Wake for…” options in the Power Adapter pane, for example, “Wake for network access.”
See Share your Mac resources when it’s in sleep and the Apple Support article About Wake on Demand and Bonjour Sleep Proxy.
You can also schedule a time for your Mac to turn on, turn off, go to sleep, or wake from sleep.