this post was submitted on 25 May 2024
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The problem with electromagnetic pulses, which a solar flare basically is, is that they induce voltage in (even otherwise inert) metal. I think turning off the grid before a flare would reduce damage because high voltage cables wouldn't have two sources of voltage to deal with, but wouldn't protect us from all damage. Most local distribution infrastructure and unshielded devices would get zapped beyond their capacity whatever you do.