My guess is that there's going to be a lot of local, smaller-scale, more distributed generation on the neighbourhood level based on smaller and easier to construct generators like stirling engines or turbines or something weird as hell, and some people with know-how are going to continue to run larger scale power plants at reduced capacity. Shoring up of old infrastructure can happen, and will likely result in a lot of communities building up around old infrastructure that wasn't as dilapidated. Power plant towns and the like.
I can't imagine electricity going away. It's way too easy to make a turbine to generate power from wind or the flow of water.
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My guess is that there's going to be a lot of local, smaller-scale, more distributed generation on the neighbourhood level based on smaller and easier to construct generators like stirling engines or turbines or something weird as hell, and some people with know-how are going to continue to run larger scale power plants at reduced capacity. Shoring up of old infrastructure can happen, and will likely result in a lot of communities building up around old infrastructure that wasn't as dilapidated. Power plant towns and the like.