What's not explained in the article, though, is how Moore's law applies to how much energy can be captured and used by solar panels.
Solar power does indeed appear to have wind in its sails. It is now hip to talk green, so alternative-power techs get press coverage like they never have before. As a result, there is hardly a week that goes by without some news being released in the field of solar power.
Of course, my skeptical (and sooo cynical) side can't help it but to notice that whenever tycoons get hip, there's always govt. funding waiting to be harvested. Is it only a curious coincidence that the hype starts building up just as the Bush dynasty is nearing its end? Or could it be that there is some genuine hope of a US govt. not so tightly tied to the oil industry?
In any case, some of the news are genuinely exciting. Several new processes are being developed to allow the production of low-cost solar films. Nanosolar even claims that its technology could challenge coal burning, at 1$/Watt, and it's shipping now.
This means that innovative solar-powered products beyond gadgetry are just around the corner. The real revolution may be happening, after all. :-)
I think it's interesting to speculate: say solar power becomes much cheaper than oil and becomes mainstream before 2020. Imagine how different the power structure globally will be in the 21st century...