The book discusses methods, technical solutions, modern automation equipment and elements of electrical equipment that make it possible to implement the mode of operation of technological equipment with optimization of power consumption, a brief analysis of the dynamics and trends in improving electrical equipment in terms of achieving rational power consumption is given, reference and information material on the technical characteristics of mass power saving means is given: frequency-controlled electric drives, contactless switching equipment, devices for metering and measuring electricity consumption, modern lighting products, electrical heating systems, including heating wires and cables.