The book "Sustainability of electric power systems" by E. In. Calentionok is an in-depth and comprehensive study devoted to one of the key topics in the field of energy - the sustainability and reliability of electric power systems. This publication will become an indispensable assistant for students, graduate students, engineers and anyone interested in modern technologies in the field of energy. Author, E. In. Calentionok is a recognized specialist in the field of electric power industry with many years of experience in scientific and practical research. His previous works, such as “Electric Networks: Theory and Practice” and “Modern Approaches to the Management of Electric Power Systems”, have already won recognition among professionals and students. In the new book, he continues to develop his ideas, offering readers a unique perspective on the challenges faced by modern electric power systems. "Sustainability of electric power systems" covers a wide range of topics, including stability analysis, methods of assessment and forecasting, as well as modern approaches to the management and optimization of power systems. The book begins with the foundations of sustainability theory, which allows the reader to gradually immerse himself in more complex concepts and methods. Kalentionok shares not only theoretical knowledge, but also practical examples, which makes the material accessible and understandable. One of the key themes of the book is the impact of renewable energy on the sustainability of electric power systems. In the context of global climate change and the transition to sustainable energy sources, this topic is becoming especially relevant. The author analyzes how the integration of solar and wind power plants affects the stability and reliability of power systems, and also offers solutions to minimize the risks associated with their use. The book will be of interest not only to specialists in the field of energy, but also to a wide range of readers interested in environmental issues, sustainable development and new technologies. Students of technical universities, graduate students, as well as practicing engineers will find in it useful tips and recommendations that will help in their further professional activities. In addition, the book will be useful for managers and decision makers in the field of energy, as it provides valuable insights into current trends and challenges in this area. The style of Calentionoc is distinguished by clarity and logical presentation, which makes complex technical aspects accessible for understanding. He skillfully combines theory with practice, which allows the reader not only to assimilate information, but also to apply it in real conditions. Reading “Sustainability of electric power systems”, you will not only gain new knowledge, but also be able to look at familiar things from a new angle. The book also raises important questions about the future of electric power systems in the face of global change. What are the prospects for technology development? How to adapt to new challenges? The answers to these questions will help the reader to better understand how the electric power industry will develop in the coming decades. In conclusion, “Sustainability of electric power systems” is not just a textbook, but a real find for everyone who wants to deepen their knowledge in the field of electricity and be aware of current trends. This work will become a reliable assistant in your professional development and will help to form a more sustainable and safe energy future.