If you want to create fuel from sun and CO2 it's cheaper to farm some oil-heavy plants and produce biofuel from them. They grow solar cells from sun and air by

If you want to create fuel from sun and CO2 it's cheaper to farm some oil-heavy plants and produce biofuel from them. They grow solar cells from sun and air by itself :) It's magic-level nanotech :) http://www.afdc.energy.gov/fuels/prices.html http://www.afdc.energy.gov/fuels/prices.html