I think homes could easily run off of solar only, I think it's only large factory and schools and office buildings that would use too much power.
Well, not exactly. They would need some storage batteries to make it through the night, but it's not too far-fetched. Probably the best solar setup is to be grid-connected to buy at night and sell during the day. The hardest part is that the initial capital costs for solar are pretty high and the payoff very slow.
All paths are the same: they lead nowhere. Choose the one that has heart.