I think it would be safe. In the Carrington event the damage was caused by currents induced in long wires. Of course we have a lot more long wires now so the

I think it would be safe. In the Carrington event the damage was caused by currents induced in long wires. Of course we have a lot more long wires now so the problems would be correspondingly larger. I suspect that more damage would be caused by secondary effects than the direct effect of the induced currents. Some power lines would trip out and this would add extra load to other circuits which would trip out even if not affected by the direct effects of coronal mass ejection. In a poorly designed or poorly maintained power distribution system this will cause a cascade of failure that can disable power supplies and communications over a huge area. This sort of cascading failure happened in the US North East in 2003, see https://en.wikipedia.org/wiki/Northeast_blackout_of_2003 https://en.wikipedia.org/wiki/Northeast_blackout_of_2003. See https://www.wired.com/2011/09/0902magnetic-storm-disrupts-telegraphy-carrington-event/ https://www.wired.com/2011/09/0902magnetic-storm-disrupts-te... for some first hand comments.