If I had answers, I wouldn't be saying that it's a good time to think about that.
But you shouldn't assume that things will just continue on as they were in the past hundred years. Boomers are retiring now, when the busters start going into retirement it's going to be a huge mess. Inflation is how democracies die.
Forced labour? Central planning? Requisition? How exactly would that work? Somebody still needs to build and operate those power plants.
Also commercial and industrial users consume >60% of all electricity in the US, should they also be subsidized? Or subsidize residential users?