Another point. Our electrical infrastructure is a lot more robust than people think it is. A good hurricane or tornado or even a large thunderstorm packs a lot more energy than a nuclear weapon does. Mother nature challenges the grid everywhere every day.
There was an interesting post about a recent grid failure in Texas. People wanted to blame it on tree huggers, but failed to consider that the northern states manage to use the sme kind of energy that was complained about in Texas. Moreover, Texas had had a similar freezing episode in 2011, but had failed to make the system upgrades that would have prevented the recent problem. Captalism at its best.