The Austrian government tried to publish a bit of guidelines in an attempt to convince the completely apathetic population to be a bit more prepared in case of a blackout and don't freeze to death or starve if the power goes off for a couple of days:
https://www.bundesheer.at/archiv/a2021/blackout/blackout.shtml (google translate should do it)
EDIT A bit more of it:
https://www.saurugg.net/2020/blog/krisenvorsorge/blackout-gefahr-sehr-real-bundesheer-ruft-zur-vorsorge-auf(The older people are bit more prepared with at least a bit of provisions and tools, but the carefree youngsters if their food delivery service stops and the stores are closed, they just die, same with the water and electricity, if Netflix or, God forbid, Internet stops for a week, they're done,
if one mentions that they should have the minimum of water and food supplies at home and another flashlight than their phone has, they look strange to and ask "but why..." with big round eyes, if you talk a bit more of preparedness like some emergency medical kit (they don't how to use it anyway), canned food or, the horror, a small portable generator, you're deep in the conspiracy theory

)
Then of course, the press and politicians took this as a nice talking point to boost their agenda, from global warming to Pootin bad to whatever.
Basically that's all of it.
Cheers,
DC1MC