Domain walls (DWs) are very common objects that appear in many BSM models with spontaneous breaking of discrete symmetries and have been widely studied in the context of gravitational wave observation. Depending on models, DWs can contain internal degrees of freedom such as fermionic zeromodes (like DW fermion in lattice QCD) or bosonic zeromodes. Such an object is called current-carrying DW as it can carry (dark) electric charge/current. In this talk, we will show gravitational wave spectrum radiated from current-carrying DWs can be quite different from conventional DWs. Particularly they can enhance UV regime of spectrum, increasing the detectability by future gravitational wave instruments.