The problem with this view is that if you look at the energy demand curve for the human race, there are only two long-term sources that can even potentially sat

The problem with this view is that if you look at the energy demand curve for the human race, there are only two long-term sources that can even potentially satisfy the demand: nuclear and space-based solar. Wind, geothermal, ground-based solar, tidal...there just isn't enough energy there to satisfy the demands, especially once you factor in the inefficiencies of power transmission. The reason it's a problem, of course, is because the both methods are politically difficult and require significant engineering (if not research) and capital investment to make them practical.