@Tomase13 Sorry to hear that your system is down. Did you get a chopstick and do a reset on the Gateway? (Dumb question, but I thought that I would ask.) If you have already powered cycled everything and left the switches / breakers off for ten minutes, then it looks from here like something failed.
I have to say that if this happened after a lightning event, my money would be on a surge frying something, likely the Gateway, to at least some portion thereof. If you don't already have a whole house surge protector installed, I would install one, preferably a large, given your location.
@Vines is my memory correct that the "12V Jump" for the system is only in the case that there is a) no grid, and b) solar?
All the best,
BG