"Assessing the Energy Efficiency of Pumps and Pump Units" is a comprehensive technical book developed in collaboration with Europump. It provides a detailed analysis of the energy efficiency of pumps and pump units, including the associated motors and drives. This book is the first of its kind and is aimed at professionals dealing with the new EU regulations on pump efficiency and the guidelines of the U.S. Department of Energy. It imparts the necessary knowledge for calculating and evaluating the energy efficiency of pumps and offers a solid foundation for the application of PA and EPA methods. Additionally, it covers relevant legal frameworks as well as the concepts of Energy Efficiency Indices (EEI) for various pump systems. The clear structure and illustrative graphics make it a valuable reference work for engineers and professionals in the field of energy efficiency.