How big of a coronal mass ejection from the sun do I need to destroy all the electrical equipment on earth

So the background is simple: in the modern day a CME (coronal mass ejection, a solar flare that has escaped the sun) hits the Earth and destroyed all the electrical equipment causing planes to crash and roads to instantly be filled with wrecks, power plants to became useless and power grids destroyed.

My question is simply how big does a CME need to be to make that happen? Would other equipment be destroyed by such an electromagnetic flare? What other secondary effects would this CME have?

Edit:

In light of previous comments and answers I am changing this question to fit my increased knowledge of this subject. So what I am wanting to know is how big of a coronal mass ejection would be needed to destroy the modern electrical grid and cause most of our transport infrastructure to fail. I only want modern civilization to break down with this flare, some electronic equipment can still work after the ejection because of this. I am simply wanting it to cause a big enough immediate disaster and technological regress to where society would enter a dark age and take many generations to come back to a modern world. so how big of a coronal mass ejection would I need?

posted over 6 years ago

skout‭

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