It's Christmas Day!

[Lightspeed]

Good scenario Jonas.

No need to immediately assume full collapse of the system, but the widespread outage will start the situational assessment process.
We’ll keep watching for lights coming back on in the local area, We’ll listen for sounds that will indicate unusual activity. We’ll keep listening for radio and TV broadcast signals. We’ll keep an eye on cell phones for resumed service

My Family’s car has a range of more than 700km, so even if half full ( which is the minimum we like to let it fall to), we’d very easily be able to cover the 100km distance, even allowing for diversions. It also carries GHBs, rations, extra fuel, and of course radio transmitting equipment.

Those members of family who know of our preps, are already part of the survival group. They know who they are and they know what to do in an emergency. This means that there is no need consult nor explain to any non included members of the family what we are doing.

As BP proposed, if by early hours there is no return of electrical power and no plausible and acceptable explanations of the situation broadcast, then an early start on boxing day morning would be tactically advantageous. We would leave under he simple pretext of having not slept well and wanting to make sure our own home is secure. Leaving this early will probably mean just leaving a note on the kitchen table for the others.