Thank you. I get bloody irritated at those who start at the bottom, use Moore's law, then declare we will soon be powered by solar. As you so clearly described, there is a hard, upper limit, and a top-down analysis is needed. If 100% of the solar energy hitting the ground were coverted to electricity (an impossible efficiency rate), powering the city of Singapore would require panels covering land three times the size of that city. But you need twice that so you can provide power through the night. Plus land for the electrical storage (batteries) for that nighttime power. And that's without electric cars.
Move on, people. Solar is for niche markets, not a source for primary power needs.
Biting the hand that feeds IT
