Solar Storms

Most of civilization's electricity is generated far off-site from where it's delivered. This is because you don't want to be running and refueling coal/gas/nuclear plants inside cities, hydraulic/wind power can't be moved, and solar panels are cheaper to install on flat desert terrain than on cities: So in practice this means running power over hundreds or even thousands of kilometers. E.g. here are the Chinese long-distance lines: Gemini 3.1 Pro-preview in AI studio American long-distance lines: These are simplified maps meant to illustrate how insanely long power lines get.