Research for clean and sustainable energy has seen explosive growth in the past decade. The “Ecological Chemical Process and Technology Team” is a Talent Team of Preponderant and Characteristic Discipline of Taishan Scholars at Qingdao University of Science and Technology (QUST) that commits to the development of highly efficient renewable energy conversion and storage systems without damaging the environment. In order to further strengthen the academic exchanges among researchers in this field, discuss the development trend of this subject and promote the revolution of renewable energy, this Special Issue has been organized as presented in article number 1902047 by Dan Wang and Shouhua Feng. The included articles help gain fundamental understandings and guide nanomaterial design for energy‐production technologies.