The publication provides an analysis of structural diagrams and the main operational and technical characteristics of operating stationary and mobile autonomous power supply systems (EPSS) of medium power (up to 200 kW) and considers the prospects for their development. The main attention is paid to promising contactless power generators driven by high-speed motors, static power converters, features of operation, design, synthesis of the EPSS structure and its optimization. The monograph is intended for scientific and engineering workers, specialists in the field of EPSS design, and can be useful for students of universities of relevant specialties.