This course is designed for engineering undergraduates to understand the importance of energy in the development of human society, cultivate their interest in energy science and technology, and enable students to master the basic theories and research methods in the field of energy engineering. The knowledge system of this course is based on thermodynamics and electrochemistry, and the teaching content includes the working principle or realization method of fossil energy, photovoltaic power generation, electro-optical conversion, thermoelectric conversion, lithium-ion batteries, fuel cells, and nuclear energy utilization. This course involves the intersection of multiple disciplines and provides a platform for the practice of new engineering ideas combining science and technology. Teachers adopt teaching methods such as teacher-student interaction and combination of science and practice, supplemented by multimedia teaching environment, focusing on cultivating basic science literacy of engineering students. The assessment of this course combines class performance , quiz results, homework results, mid-term written results, and final research and report results to give students a comprehensive objective evaluation.