This map shows the buildout of solar compatible with reaching net-zero emissions by 2050 in five-year increments. Interactive features show this deployment broken down into rooftop and utility-scale. Utility-scale solar is cheaper and can provide higher capacity factors and economics of scale. While rooftop solar costs more than utility-scale solar, it offers benefits in reliability, customer choice, and location, as well as the potential to avoid some distribution costs (though these benefits were not assessed in our modeling).
We see a large increase in solar everywhere, with solar playing some role in every region as capital costs continue to decline, overcoming any barriers due to low resource quality.