Preparation for power outage

The weather is supposed to get a bit unpleasant, and in some places a few power poles could actually snap due to freezing rain. I don't really expect it to happen, but just for fun, the question:

How do you prepare for a 48-hour power outage at -5 to -10 degrees?

It never hurts to think about such things, even if it's unlikely.

How do you prepare for 48 hours of power outage at -5 to -10 degrees?

Not at all, because it is unnecessary to take special precautions. You surely have warm clothes...

Turn up the heating curve of the heat generator and heat the screed/floor?

Did you spontaneously move to God's Own Country? I can't even remember a power outage longer than half an hour, not even because of Hurricane Kyrill. A somewhat modern house should definitely be able to endure a few hours. I live in a concrete block built around 1980 (so no significant insulation) and a few years ago the heating broke down in the middle of winter. After 2 days it was already a bit cooler but still bearable. If available, you can try looking for the camping stove in the basement. Then at least there's still something warm to eat. Otherwise, the usual recommendations from disaster protection regarding stored food and hygiene articles that no one paid attention to before Corona ;) apply.

Did you spontaneously move to God's Own Country? I can't even remember a power outage longer than half an hour because of hurricane Kyrill.

Quote from Wikipedia, Münsterland Snow Chaos 2005
Some power poles could no longer bear the weight of the heavy snow on the lines and broke off. Fallen branches caused line breaks and short circuits. According to RWE, around 250,000 people in 25 communities were affected by the power outage. A state of emergency was declared for the districts of Steinfurt and Borken. Even four days after the snowfall ended, not all places were reconnected to the power grid.

Mulled wine

and how do you make it hot?