Abstract:Promoting the regional demonstration of energy technology for carbon peak and carbon neutrality (referred to as "dual carbon") is an important part of the Chinese Academy of Sciences' action plan to support the "dual carbon" goals. This study discusses the significance of carrying out the comprehensive demonstration of "dual carbon" technology from the two dimensions of "technology integration demonstration" and "typical regional demonstration". Besides, based on the existing research layout in the energy field of the Chinese Academy of Sciences, the idea and four mainlines are proposed for the Chinese Academy of Sciences to promote "multi-energy integration", which are clean and efficient utilization and coupling substitution of fossil energy, multi-energy complementation and large-scale application of non-fossil energy, industrial low-carbon and zero-carbon process reengineering, and digital intelligent integration optimization, namely. Finally, combined with the work of the Dalian Institute of Chemical Physics, this study discusses the background, goals, and technical routes of the comprehensive demonstration of multi-energy fusion technology in Northern Shaanxi, Liaoning Province, and Shandong Province, respectively for researchers and decision makers.