Solar power is very awesome, but for the time being, it's not gonna be used here. For one, it's not yet cost effective (getting there, though), not to mention some places will get more use out of it than others (Washington State is the only state I know of where the houses are "seaworthy." Dumdum da bish!). And second, and you may not believe this, certain types of power of certain...political leanings. For example, nuclear power. It can only move a country in an autocratic direction, simply because it's costs and dangers require it to be held and maintained by centralized governments, financial institutions, and militaries. And then there's the disposal of the resulting waste...
Solar power is democratically biased, because small communities and towns CAN maintain anything that can generate and provide it with little overall harm and solar power itself works best when it's decentralized. But of course, for this reason, big power companies would never allow this, and as we all know, companies rule the world (more or less). This essentially why we won't see solar power for a long, long time.