SUNER-C CSA overarching objective is to aggregate fragmented knowledge and develop the framework conditions to overcome scientific, technological, organizational and socioeconomic challenges to accelerate innovation and enable the transition of technologies for solar fuels and chemicals from laboratory and demonstrator level to large-scale industrial and broad societal application. Through a holistic approach, SUNER-C will contribute to circular economy by replacing fossil-derived fuels and chemicals by renewables and carbon recycling as key element towards the EU net-zero emissions target by 2050. SUNER-C will build upon the work of SUNERGY, a pan-European initiative on fossil-free fuels and chemicals from renewable power and solar energy, with to date over 300 supporting organisations across and beyond Europe. SUNER-C specific outcomes during the CSA will be to: develop an inclusive pan-European innovation community and eco-system on solar fuels and chemicals with global outreach, linked to political and societal needs, gathering stakeholders from different fields, sectors and disciplines around a shared vision, and coordinating with existing initiatives to ensure complementarity; develop a roadmap and a blueprint to implement it, as main drivers to identify and tackle long-term research and innovation challenges to de-fossilize society with solar fuels and chemicals; prepare the foundations for a large-scale research and innovation initiative (LSRI), ready to be launched at the end of the CSA, through an instrument to be agreed upon with the European Commission and the Member States. The LSRI will continue developing the eco-system and supporting the implementation of the roadmap, speeding up industrial and societal uptake of technologies for solar fuels and chemicals in the EU and contributing to wider, longer-term impacts, including those on “Increased autonomy in key strategic value chains for resilient industry” outlined in the Horizon Europe Work Programme.