The book "Fundamentals of energy saving: educational and methodological manual for students of specialties "Radio engineering" and "Radioinformatics" of all forms of education" by G. In. Barchenko is a unique and relevant publication that immerses the reader in the world of energy saving one of the most significant topics of our time. In the context of global climate change and rising energy prices, energy efficiency issues are becoming especially urgent. This manual not only teaches the basics of theory, but also offers practical recommendations that will be useful to both students and specialists in the field of radio engineering and radioinformatics. The book is intended for students studying in specialties related to radio engineering and radioinformatics, as well as for anyone interested in energy saving and sustainable development. It will be useful for both young professionals and teachers who want to update their knowledge and methods of teaching . Readers interested in modern technology, ecology and innovation in the field of energy will find in this manual a lot of useful and inspiring. Inside the book G. In. Barchenko examines various aspects of energy saving, ranging from the foundations of the theory to practical examples and cases. The author focuses on the importance of rational use of resources and the introduction of modern technologies that can significantly reduce energy costs. Readers will be able to learn about different methods and approaches to energy conservation, as well as how these principles can be applied in real-world settings. The manual also discusses current problems and challenges faced by modern society in the context of energy consumption. Style G. In. Barchenko is distinguished by accessibility and clarity of presentation, which makes complex technical concepts understandable to a wide audience. The author uses many examples from practice, which allows the reader not only to learn theoretical material, but also to see how this knowledge can be applied in real life. The book is filled with illustrations and diagrams that help to visualize information and make the learning process more fascinating. The topics raised in the book cover a wide range of issues, from the fundamentals of energy conservation and its importance to modern technologies and innovative solutions that promote the efficient use of resources. Readers will be able to reflect on their contribution to the preservation of the environment and how each of us can contribute to the sustainable development of the planet. The book “Fundamentals of Energy Saving” will be an excellent addition to the library of any student or specialist in the field of radio engineering and radioinformatics. It not only enriches knowledge, but also inspires actions aimed at protecting the environment and rational use of resources. If you are looking for literature that combines theory and practice, as well as current knowledge, then this guide is exactly what you need. In conclusion, "Fundamentals of energy saving" G. In. Barchenko is not just a textbook, but a real find for everyone who seeks to understand and apply the principles of energy saving in their lives and professional activities. This book will be a faithful companion on the way to a sustainable future full of innovation and opportunity.