Full Name: 2023 4th International Conference on Clean and Green Energy Engineering Abbreviation: CGEE 2023 Welcome to join in the 2023 4th International Conference on Clean and Green Energy Engineering (CGEE 2023)， which will be held in Ankara, Turkey during August 26-28, 2023. Submissions will be peer reviewed by the conference technical committees and internatioal reviewers. Accepted and presented papers at the conference will be published in the proceedings of CGEE 2023 and included into IEEE Xplore, which will be sent to EI Compendex, Scopus for indexing. A set of selected papers with extended version will be published into International Journal of Smart Grid and Clean Energy, which will be indexed by Inspec, Crossref, Google Scholar. The method for submitting your paper: Electronic Submission system: https://cmt3.research.microsoft.com/CGEE2023 Please feel free contact with us: Paulina Aydogan (Conference Secretary) E-mail: cgeeconf@163.com For more information about international conferences, please visit our conference website: CGEE 2023 Website: http://www.cgee.org/