I think the reference is more about geomagnetic storms caused by solar flares, like the Carrington Event (https://en.wikipedia.org/wiki/Carrington_Event https:/

I think the reference is more about geomagnetic storms caused by solar flares, like the Carrington Event (https://en.wikipedia.org/wiki/Carrington_Event https://en.wikipedia.org/wiki/Carrington_Event), which if it happened today would probably wreck most power grids across the planet.