2026 4th International Forum on Clean Energy Engineering（FCEE 2026) will be held during April 17-19, 2026 in Seoul, South Korea. Conference Website: https://fcee.net/ Conference Venue: Seoul, South Korea FCEE 2026 Shining Points: 1. Papers submitted to FCEE 2026 will go through peer review process by international experts. Selected papers will be published in the International Conference Proceedings, which will be sent to Scopus, CPCI (Web of Science), CAS, DOAJ, EBSCO, ProQuest and other major databases for indexing. 2. FCEE 2026 will be held in Seoul, South Korea. 3.The 2025 3rd International Forum on Clean Energy Engineering (FCEE 2025) concluded successfully in Jeju Island, South Korea, earning high recognition and positive feedback from experts and scholars around the world. 4. All accepted and presented papers of FCEE 2025 has been published in E3S Web of Conferences Volume 634 (2025) and will be sent to Scopus, CPCI (Web of Science), CAS, DOAJ, EBSCO, ProQuest and other major databases for indexing. Call for papers Clean coal and fossil fuels Clean energy systems and technologies Cleaner technologies Biomass Energy Engineering Wind Energy Engineering Nuclear Energy Engineering Hydrogen and Fuel Cell Storage Technology Energy Chemical Engineering Energy-efficient Lighting Products and Technologies New Energy Vehicles, Electric Vehicles Energy Security and Clean Use Gasification Geothermal energy Green Energy Systems Green power production and cogeneration CO2 capture, storage and utilization Energy-Saving Technology Exergetic and exergoeconomic analyses Hydrogen and fuel cell technologies Hydrogen energy and Hydropower Low carbon technologies Mini Hydro Power New Energy Applications Nuclear energy technologies and applications Nuclear hydrogen production Novel Energy Conversion Studies Ocean energy Photovoltaic systems and Photocatalysis Renewable Energy Resources Solar cells energy and Solar thermal energy Solar Energy Engineering Paper Publishing Papers submitted to FCEE 2026 will go through peer review process by international experts. Selected papers will be published in the International Conference Proceedings, which will be sent to Scopus, CPCI (Web of Science), CAS, DOAJ, EBSCO, ProQuest and other major databases for indexing. Committee Conference Chair Tae-Jun HA, Kwangwoon University, South Korea Technical Program Chairs Hossam A. Gabbar, Ontario Tech University, Canada Xiao-Dong Zhou, University of Connecticut, USA Conference Local Chair Hyunook Kim, University of Seoul, Korea Technical Publicity Chair Jinqiang Zhang, The University of Adelaide, Australia Technical Program Committee Chong Tian, Wuhan University, China. A. Munir, Quaid-i-Azam University, Pakistan. Liang Li, Soochow University, China. Zongping Shao, Curtin University, Australia. Mingwei Zhao, China University of Petroleum, China. Baseem Khan, Hawassa University, Ethiopia. Jason Jieshan Qiu,Beijing University of Chemical Technology, Beijing, China. Jian Hong Liu, Taiwan University of Science and Technology, China. Andrej Senega?nik ,University of Ljubljana, Slovenia. Jinqiang Zhang, The University of Adelaide, Australia. Miadreza Shafie-khah, Nowocert, Dublin, Ireland. Prachi Ugle, UNSDGs Global Platform, United Kingdom. Xiaoru Yun, National University of Defense Technology, China. Yutian Liu, Shandong University, Jinan, China keynote Speakers: Prof. Hossam A. Gabbar Ontario Tech University, Canada Prof. Keiji Ujikawa Yokohama National University, Japan Submission and Contact Methods Submission Methods: Electronic Submission System: https://confsys.iconf.org/submission/fcee2026 E-mail: fcee@iap.org Conference Specialist: Ms. Vera Liao FCEE 2026 can provide a platform for academic communication in Clean Energy Engineering. For more conference information, please visit the conference website: https://fcee.net/