The book "Sources and systems of centralized heat supply" edited by E. P. Khagleeva is an important and relevant publication that is aimed at energy professionals, engineers, students and anyone interested in modern heat supply technologies. This work is an extensive and in-depth analysis of the main aspects of the design, operation and modernization of district heating systems, making it an indispensable source of knowledge for professionals and students. The book examines the key heat sources used in modern heat supply systems, including boilers, thermal power plants and alternative energy sources. The authors describe in detail the various technologies used to generate heat, as well as their impact on the efficiency and sustainability of systems. The reader will be able to learn about the latest developments in the field of heat supply, such as the use of renewable energy sources and the introduction of innovative technologies, which makes the book especially relevant in the context of global climate change and the desire for environmental sustainability. Who can like this book? First of all, it will be interesting for students of technical universities studying in the fields of energy and heat engineering . It will also be useful to practicing engineers working in the field of design and operation of heat supply systems, as well as to anyone who wants to deepen their knowledge in this important area. The book will be an excellent help for those who strive for professional growth and want to be aware of the latest trends and technologies in the field of heat supply. The topics raised in the book cover a wide range of issues, including economic aspects of heat supply, energy efficiency and environmental issues. The authors emphasize the importance of optimizing heat supply systems to reduce costs and improve reliability, which is especially true in the face of rising energy prices. The book also touches on the issues of automation and digitalization of heat supply processes, which opens up new horizons for improving the efficiency and management of systems. The style of writing of the authors is distinguished by clarity and accessibility, which makes it easy to absorb even the most complex technical aspects. Their experience in the field of heat supply and deep understanding of the subject make this book a real storehouse of knowledge. In addition, the team of authors includes leading specialists, which gives the work additional value and authority. If you are looking for literature that will help you understand the intricacies of district heating, "Sources and district heating systems" will be a real discovery for you. This book will not only expand your knowledge, but also inspire new ideas and solutions in your professional activities. Do not miss the opportunity to get acquainted with this important work, which will become your reliable assistant in the world of heat supply . Thus, “Sources and systems of district heating” is not just a textbook, but a real encyclopedia that can change your idea of heat supply and its role in the modern world.