The biggest solar event in recorded history happened in 1859. A similar storm today would be devastating on our current way of life around the globe. https://en.wikipedia.org/wiki/Carrington_Event
Here's the summary for the wikipedia article you mentioned in your comment:
The Carrington Event was the most intense geomagnetic storm in recorded history, peaking from 1 to 2 September 1859 during solar cycle 10. It created strong auroral displays that were reported globally and caused sparking and even fires in multiple telegraph stations. The geomagnetic storm was most likely the result of a coronal mass ejection (CME) from the Sun colliding with Earth's magnetosphere. The geomagnetic storm was associated with a very bright solar flare on 1 September 1859. It was observed and recorded independently by British astronomers Richard Christopher Carrington and Richard Hodgson—the first records of a solar flare.
I worked for an electric utility for nearly 2 decades and now am a consultant helping power companies with grid modernization. This is the part that terrifies me, we are WOEFULLY unprepared for an event like this. A number of times over the years a strategic transformer reserve has been floated to congress with no movement. Even things like a large scale, coordinated attack against a bunch of substations at once could cripple the US power grid for months or even years. Transformer lead-times can be as long at 70 weeks last I knew. Obviously, in the event of a large-scale event the government could step in and throw resources to speed that up but it would be FAR better to have a ready-to-go supply we could draw from.
what i wonder is this something that can be solved without government long range wisdom? like could you start a business stockpiling these things and being the only game in town when theres a disaster? or are the disasters so rare and the price gouging so limited that it would be a bad business move to sit on a square mile of these somewhere inexpensive and safe?
The cans you see on poles are relatively ubiquitous and fairly easy to source. The big boys in the substations are the ones with the huge lead times and large cost. Stockpiling them as a business would be a loosing venture. It would be unlikely you would have a customer locally and transporting them is expensive owing to the weight/size.
As someone who works for a large utility company on the distribution side, the small ones on poles or in underground neighborhoods are still tough to get with backorders causing delays in projects. It’s gotten a lot better, but it’s still slow on them.
I know amateur radio operators who have emergency equipment stashed in containers designed to keep the radiation out so they have a backup in case literally everything else they have goes down.
Radio works outside the city too, and most of the time I see people tossing a HF mobile rig in there. A solid one of those can run 100w off a car battery and if you can get a random wire antenna over a 35-40 foot high branch you'd probably be able to cover the country on the lower bands so long as the ionosphere isn't too irregular. You can even get car appropriate sized antennas for the higher frequency, shorter range bands.
Definitely need to evaluate the source of that info.
On the one hand, I'd think engineers would bring these issues up, and have ideas how to mitigate risks, in any industry that could be affected (especially power/telecom, since they affect every utility). On the other hand, I can also see management deciding to pay lip service to the identified risks.