A dozen cities have made commitments to use 100% renewable energy and many more have programs and policies that encourage residents to install a rooftop solar to power their homes, heat their water, and lower their energy costs, and thus getting closer to achieving the goal of decarbonizing our economy.
But the comprehensive research shows that at the end of the day, the main difference between cities leading on solar energy and those that are lagging is effective public policy – at the state and local level.