The following support document makes life so much better for MacBook owners.

Prevent a Mac laptop from turning on when opening its lid or connecting to power on apple.com

To prevent startup when opening the lid or connecting to power: sudo nvram BootPreference=%00 To prevent startup only when opening the lid: sudo nvram BootPreference=%01 To prevent startup only when connecting to power: sudo nvram BootPreference=%02

The text was automatically translated from German into English. The German quotations were also translated in sense.