We are pleased to welcome you to 2022 International Conference on Renewable Energy and Electrical Technology（ICREET 2022） , which was held on December 16-18, 2022 virtually. we are honored to have presenters from Italy, China, Denmark, Turkey, Malaysia, India in this program. Much as we like to have a face-to-face meeting this year, the Covid-19 situation remains a challenge for presenters and audience to attend the conference physically. Nevertheless, this would not hinder our knowledge sharing and discussion through an online meeting.