The paper presents the results of the energy audit at the industrial en­terprises of non-ferrous metallurgy - The Open Joint Stock Companies "Pobedit" and "Electrozink". Special attention is paid to the study of the electricity quality, mainly non-sine voltage. On the basis of techno-eco-nomic analysis of electrical equipment of the SES companies it was re­vealed that the expected economic effect from reducing the level of the higher harmonic components (WG) would be about 7.5 million rubles.