[HunterWare]

A common use case for this is things like car/plane instruments/nav/etc. You don't want that sucking power all the time when your vehicle is parked for 1 week or two, but you do want a quick transition from POR to usable UI up and running.

[sagarm]

hibernate doesn't require any power; the kernel "just" restores userspace from swap instead of going through the normal boot sequence.