Here in Austin a few years ago we had our grid ‘tested’ by two plant outages up North in Feb, and the grid went down hard. Pipes froze everywhere. And we have our ‘own’ grid!
A number of years ago, I thought our separate Texas grid would save us, but now Texas is so interconnected even though the grid is “supposed” to be independent, I think we are sunk with the rest of the country. Could we “fix” ours after it's down and start it up without the rest of the country? Likely, we could, however, if the big transformers are out, it will take many months to years to get any.
I have researched that to death, and if those go across the country, we are back to the 1800s for a long time, years. I won't argue that point with those on here because I've done my homework and know what will happen.
My personal opinion, is, power is going out likely because intelligent hackers from an enemy country is going to take it out and no one can stop it happening. I've done what I can to minimize the effect it would have on me and that's all I can do.