The　complexity　of　reinforcement　and　consequent　corrosion　of　concrete　have　been　technical　issues　of　the　transition　segments　of　the　hybrid　wind　turbine　tower.　A　novel　concrete　transition　segment　using　prestressed　ultra-high　performance　concrete　(UHPC)　that　does　not　necessitate　ordinary　reinforcement　is　applied　to　a　4.8MW　H160　prestressed　hybrid　wind　turbine　tower.　The　mechanical　behaviors　of　the　transition　segments　only　with　reinforced　concrete　segment　(T-C80RC)　and　the　UHC140　segment　without　ordinary　reinforcement　(T-UHC140)　are　investigated　using　3D　finite　element　models.　The　comparative　study　shows　that　UHPC　in　T-UHC140　improves　the　overall　mechanical　performance.　©　2023　The　Author(s).