This book addresses how a country with Europes best solar irradiation potential yet very low installed solar capacity of less than 0.5 gigawatt (GW) in 2017, went on to become the darling of Europes solar scene. By 2023, installed capacity has exceeded 2.5 GW, a five-fold increase within six years, but even more striking is the latest target of 20.4 GW by 2030 in Portugals National Energy and Climate Plan, up from the earlier target of 9 GW by 2027. These are large ambitions, and policymakers, practitioners, and scholars alike wonder: will these targets bear out in practice? Drawing on long-term, multi-sited and multi-scalar ethnographic fieldwork, this book aims to address this concern. There is no comparable existing work that tells this story of Portugal, a case that has global significance as a laggard rather than a frontrunner and that is rapidly in the ascendancy.