The 4th 2022 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE) is an international forum for the exchange of ideas and information on power and energy systems, nuclear applications and mechanical engineering. The fields of interesting deal with the issues of Nuclear and Mechanical applications, voltage regulation in electric power networks of 10 kV and above, up to 1150 kV, ways to increase the dynamic stability of the power system, the development of the methodology for testing the support of overhead power lines, methods of electrical energy regulation, electricity supply of residential buildings and industrial enterprises, electricity losses in networks, monitoring the power quality and assessing the impact of modern electrical appliances on electric supply, design, development, modeling, operation, management and evaluation of the efficiency of power plants based on renewable energy sources, as well as modeling of natural processes for practical use, issues related to high voltage technology, relay protection and automation.