This report offers a roadmap to double the share of renewable energy by 2030, based on a bottom-up analysis of official national sources. The roadmap encompasses 26 countries representing and not only focuses on technologies, but also on the availability of financing, political will, skills, and the role of planning. The report argues that there is a compelling economic case for the renewable energy transition is even stronger when socio-economic benefits are included, such as climate change mitigation, health impact and job creation. It states that a high share based on a range of renewables provides flexibility, increases independence and makes the overall energy supply more reliable and affordable.