To realize a sustainable global environment and society, not only the optimization of individual vehicles and energy devices, but also their organic coordination and cooperation are required. In addition, the design and control of these devices must consider the various characteristics of users, which will lead to the realization of more energy-efficient and convenient devices and systems. In the field of Sustainable Power and Energy Systems, we are working on automotive powertrains and distributed energy systems. Our research objective is to analyze and synthesize them. The followings are the main topics: 1) the elucidation of phenomena related to energy conversion, 2) modeling using physics and AI, 3) systemization and control using models and information, and 4) the optimization of energy systems considering human behavior.