A demagnetization system for demagnetizing magnet elements (10) of a wind turbine generator component is provided. Each magnet element (10) comprises at least one permanent magnet block (15). The demagnetization system (100) comprises at least one heating station (21, 22), wherein each heating station comprises an induction heater (30) configured to heat a magnet element (10) and an automatic transport system (50) configured to transport each magnet element (10) to each of the at least one heating station (21, 22), wherein the demagnetization system (100) is configured to heat the magnet element (10) at each heating station (21, 22) by means of the respective induction heater (30).