I was just about to write that "today" is the best time to run servers in your room, due to raspberrpis and low power usage... then I remembered that it's practically impossible to buy one, and that the media is already preparing us (here in the EU) for power restrictions.. so yeah.. :/
Sorry i have to comment on this cheezy as it may sound.
Dont give into the fear. See if there are alternative power sources you can play with for your raspberry pi and see if there are creative ways to buy them (used, other countries, etc).
Re power sources, what can you do with a solar powere battery? Is there a diy system of power you can build? One that takes in mainline power when available, and solar or battery when not? talking about small hobby panels that can charge a battery during the day and discharge at night. I used power banks for that purpose.
In this context if my life style is under threat i want to life style even harder. I sold a car and instead of buying a replacement i will install solar panels. I know its a fortunate case but even if i can life style a little bit harder and lay less in energy then i will do so (not waste energy but say if it gets cut because of actions if a certain dictator then i can still plug my phone in to criticise said dictator … even harder).
tl;dr; i’d look for creative solutions just so i can stick my two fingers up to the current situation.
RockPro64s are easily available. I have 2 running on a closet. It’s not as generally supported as RPis but if you just stick to the supported OS you wont have any issues.
The problem with non-raspberrypi SBCs is, that after a few year, they become unsupported, and it's hard to get a recent OS with a recent kernel and packages available... I can still get newest OS for raspberrypi 1 (which is ancient by now), while RockPro64 has this:
> The ROCKPro64 4GB board designated as LTS (long Term Supply) model, PINE64 committed to supply at least for 5 years until year 2023 and beyond.