Earth Electromagnetic Pulse (EEMP) currently has two kinds of impact, positive and negative.
The positive impact destroyed the Morandi bridge by overheating, and the negative one blacked out Spain and Portugal by overcooling.
The massive metal and reinforced concrete structures, machines with high driving and magnetic moments, and high-frequency devices such as HVDC lines and power inverters will suffer first - the Global blackout has to be expected.
There is an offer to look for a solution apart.