The 4th International Conference on Green Energy, Environment and Sustainable Development (GEESD2023) was successfully held from 15–17 June 2023, face-to-face in Mianyang, China and online via Zoom. About 70 attendees participated in the conference, which was divided into three parts: keynote sessions (each of 30 minutes), 22 oral presentations (each of 15 minutes), and 10 poster presentations.

Special thanks go to the following keynote speakers for their excellent speeches:

Professor Mohammadreza Aghaei, from the Norwegian University of Science and Technology (NTNU), Norway

Professor Yifei Wang, from the Harbin Institute of Technology, China

Professor Wending Pan, from the University of Hong Kong, Hong Kong, China

Professor Tsair-Wang Chung, from Chung-Yuan Christian University, Taiwan, China

Professor Richao Cong, from the University of Kitakyushu, Japan

The session chairs and keynote speakers worked together to select the best oral presentation and poster presentation.

This collection is divided into seven sections: (1) Green Energy and Systems; (2) Computer Methods in Environment; (3) Chemistry and Environment; (4) Ecology and Rural Environment; (5) Energy, Environment and Economy; (6) Environment and Pollution; and (7) Water and Mineral Resources, with the most up-to-date findings and technologies being discussed. We believe participants in GEESD2023 will have both gained knowledge and had the opportunity to meet new friends in the same fields, and we hope that this collection will benefit readers in the same way.

Yingfa Lu

Hubei University of Technology, China