'Green Screens' Campaign: macOS

Step 1 of 2: Set the Screen Saver Delay:

  1. From the Apple Menu, choose "System Preferences."
  2. Click the icon labelled "Desktop & Screen Saver."
  3. Click the "Screen Saver" tab.
  4. Use the "Start after" pull-down menu, or the "Start screen saver" slider, to set an appropriate delay.

Screensaver Control Panel

Step 2 of 2: Set the Energy Saver Settings:
  1. Click the "Show All" button.
  2. Click the "Energy Saver" icon.
  3. If you want to put your entire computer to sleep, choose the time using the "Put the computer to sleep when it is inactive for:" slider.
    Note: when your computer is asleep, it uses very little power, and it is essentially turned off (i.e. it can't do anything).
  4. If you only want the screen/monitor to go to sleep, click the box labelled "Put the display to sleep when the computer is inactive for" and choose an appropriate time.
    Note: if you choose a time that is shorter than the amount of time before the screensaver starts, you will never see the screensaver!
  5. For extra savings, also click the button labelled "Put the hard disk(s) to sleep when possible."

Screensaver Control Panel

Energy Settings of older Mac OS X systems

Screensaver Control Panel

Energy Settings of later Mac OS X systems

Screensaver Control Panel

Energy Settings of recent Mac OS X systems

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