This book contains selected, peer-reviewed papers presented at the 12th International Conference on Energy Efficiency in Motor Systems (EEMODS'22), held in Stuttgart, Germany from May 3-5, 2022. As with previous conferences in this series, EEMODS'22 provided a scientific forum to discuss and debate the latest developments and impacts of electrical motor systems on energy and the environment, energy efficiency policies and programs adopted and planned, standards (including ISO 50.001), and the technical and commercial advances made in the dissemination and penetration of energy-efficient motor systems. Topics covered include emerging motor technologies, research and innovation in electric motors, power electronics and drives, pump systems, market surveillance and enforcement mechanisms, national energy efficiency standards including case studies, plus much more. The conference is international by nature and aims to attract high quality and innovative contributions from all corners of the globe, while the papers facilitate the development of new technologies, policies and strategies to increase energy efficiency.