A collection of science fiction stories, art, and essays exploring how the transition to solar energy will transform cities; catalyze revolutions in politics, governance, and culture; and create diverse futures for human communities. Cities of Light emphasizes that the design of solar energy matters in shaping the future of urban communities and explores how each city's geographic and social features, along with the arc of its particular local history, create unique challenges and opportunities as we work collectively to design more equitable energy futures. The collection features stories by award-winning science fiction authors, working in collaboration with visual artists and graphic designers, and experts from Arizona State University and the U.S. National Renewable Energy Laboratory in fields ranging from engineering and data science to sociology, public policy, and architecture.