The aim of this paper is to present an interactive multimedia material, which can assist to the educational environment of electrical power quality courses and especially to those, which do not include laboratory exercises. This computer interactive multimedia course, which can be executed on any modern personal computer without any additional hardware or software, includes general power quality definitions, harmonic analysis, calculation of Total Harmonic Distortion (THD), power factor correction, passive filters, resonance phenomena, operation of active filters, operation of active voltage regulators, and operation of state of the art inverters. Finally, the contents of the proposed e-learning material will be presented and the implementation of some key interactive animations will be explained and analyzed.@en