As the peak oil as a concept enters the mainstream, and as oil prices continue to ramp up, discussions of alternatives to oil are flourishing. One way of grappling with the latter is to expect a variety of solutions being deployed at once.
Another way of talking about alternatives is to pick one out as the leading solution. Here's one claim for turning the world's energy production to solar. "Solar" here means both photovoltaic and thermal (cf that blogger's earlier post).
The author draws heavily on Ray Kurzweil's argument that solar should become our leading power source: . Kurzweil imagines solar first becomes competitive with oil, then taking off into Moore's Law-type efficiency increases.
The comments thread to the first post brings up one large obstacle to "the Solar Singularity": power storage.