The invention relates to a plasma applicator (1) for applying a non-thermal plasma, particularly for disinfection purposes. The plasma applicator (1) comprises an electrically driven plasma source (2) generating the non-thermal plasma and an electrical power source (3) providing electric energy, wherein the power source (3) in connected to the plasma source (2) and powers the plasma source (2). Further, the power source (3) comprises an energy harvesting device (4), wherein the energy harvesting device (4) converts ambient energy into the electrical energy needed for the operation of the plasma source (2). For example, a piezoelectric generator can be used for powering the plasma source (2).
