The book "Underground structures of hydroelectric power plants", written by the author's team under the guidance of B. L. Cooperman, W. M. Bridge, V. F. Ilyushin and G. I. Gevirza is a unique publication that immerses the reader in the world of complex engineering solutions and technologies that underlie one of the most important branches of energy - hydroelectric power plants. This work will be of particular interest to specialists in the field of hydraulic engineering, engineers, architects, as well as students of technical universities studying energy and construction. The book covers a wide range of topics related to the design, construction and operation of underground structures of hydroelectric power plants. The authors consider in detail the geological and hydrogeological conditions that must be taken into account when designing such objects, as well as the methods of their construction and strengthening. An important part of the work is the analysis of various design solutions that can be applied depending on the specific terrain and project requirements. The reader will be able to learn about modern technologies used to create underground structures, as well as about new materials that significantly increase the durability and safety of structures. It is interesting that this publication is not only technical, but also scientific .. The authors draw on many years of experience and research in the field of hydraulic engineering, which makes the book a valuable source of information for professionals. It presents not only theoretical aspects, but also practical examples, which allows the reader to better understand how to apply the knowledge gained in real conditions. The topics raised in the book concern not only engineering solutions, but also issues of ecology, sustainable development and energy efficiency, which makes it relevant in the light of modern challenges. The book will be of interest not only to specialists, but also to a wide range of readers who are interested in the topic of renewable energy sources and their impact on the environment. It will help to understand how hydroelectric power plants work, what technologies are used for their construction and what problems may arise during operation. This publication will be an indispensable assistant for those who want to deepen their knowledge in the field of energy and engineering. The style of the authors is distinguished by the clarity and accessibility of the presentation, which allows even those who do not have deep knowledge in this area, it is easy to absorb the material. The book is filled with illustrations and diagrams that help to visualize complex concepts and make reading more fun. The authors seek to convey to the reader not only information, but also inspiration, showing how engineering solutions can change the world for the better. If you are looking for literature that combines a scientific approach and practical application, “Underground Hydropower Plants” is what you need. This book will be a great addition to the library of any engineer, student or simply interested in modern technology. Don’t miss the opportunity to learn more about how underground structures are created that provide power to entire regions, and how they can become the basis for a sustainable future.