A question for Hugh-with regards to a carrington event ,would the electric grid have to be energized in order for the energy from a carrington event to have an effect? My thinking is that of a car battery energizing a system which would be a complete circut and if you disrupt the circut by removing one battery cable then would the system still feel the effects of the energy from a carrington like event ? Thank you and if anyone else has an opinion please feel free to say something