The need for saving energy meanwhile has been realized everywhere. Economic necessity and political pressure by the EuP Directives have led to the verification of all industrial sectors for energy dissipation and to get it replaced by energy saving solutions. Since pumps are among the major industrial consumers of electricity, here the main activities are concentrated. Pump audits of existing pumping systems have successfully shown spectacular savings of up to 90%. Thus the taken measures do pay for itself quickly. However also negative examples are known where ignorance did lead to misallocation and quite the contrary did occur. For example the simply installation of frequency converters without any analysis of the system conditions does not assure energy savings.