In light of the rapid structural and policy changes primarily caused by the increasing pressure of climate change, the Covid-19 pandemic crisis and the Russian invasion of Ukraine, in early 2022 JP e3s began a repositioning process that, while keeping its original ambitions unchanged, led to an update of its main focuses, activities and objectives. This process resulted in a new Strategic Research & Innovation Agenda (SRIA) for the period 2023-2030 which aims at repositioning the JP e3s for what concerns the provision of knowledge, expertise and research on the non-technical aspects of the Energy Transition that can be identified as the Social Sciences, Humanities and Environmental (SSH-E) domain. This (re)positioning means on the one side to take into account what are the main SSH-E open issues to be considered both from the research and the policy perspective in order to reach the ambitious targets posed by the renewed policy framework (above all, Fit for 55 and REPowerEU). On the other side, exploring the SSH-E skills and competences needed for the open issues are to be properly addressed. In short, the ambition of this SRIA is to match the SSH-E competences' demand and supply as much as possible in order to support a just, sustainable and effective Clean Energy Transition (CET).