The book "Choice of voltage control modes in the distribution electrical network" by B. T. Fedina is a unique publication that immerses the reader in the world of electrical engineering and distribution networks, revealing important aspects related to voltage regulation. This work will be a real discovery for specialists in the field of energy, students of technical universities, as well as everyone who is interested in modern technologies in the electric power industry. In his book, Fedin offers readers an in-depth analysis of various voltage control regimes, which is a key factor for ensuring the reliability and efficiency of distribution networks. The author examines in detail the methods and approaches that allow optimizing the parameters of electrical systems, as well as minimizing energy losses. He shares his knowledge on how to choose the right regulatory regime to achieve maximum efficiency and safety in the operation of electrical networks. The book will be of interest not only to professional engineers and power engineers, but also to students studying electrical engineering and related disciplines. It can be an indispensable tool for those who are preparing for exams or want to deepen their knowledge in the field of distribution systems. Thanks to the available language of presentation and a clear structure, the material will be understandable even to those who are just beginning to get acquainted with this topic. The topics that Fedin raises cover a wide range of issues, ranging from the basics of the theory of electrical networks to practical recommendations for the choice of equipment and technologies. He discusses the impact of various factors on the quality of electricity, such as voltage fluctuations, harmonics and their impact on the operation of electrical appliances. The book also addresses the sustainability of systems and their adaptation to changing operating conditions, which makes it particularly relevant in light of the current challenges associated with the transition to renewable energy sources. The style of the author is clear and logical, which allows the reader to easily assimilate even the most complex concepts. In. T. Fedin is an experienced specialist with many years of experience in the field of energy, and his knowledge and experience are reflected in each chapter of the book. He is also the author of other well-known works on electrical engineering and energy, which confirms his status as an expert in this field. The book "Choice of voltage control modes in the distribution grid" will be an important contribution to the library of any energy engineer, as well as anyone who seeks to understand modern technologies in the field of electricity. If you are looking for materials on topics related to distribution networks, voltage regulation or optimization of electrical systems, this publication will become a real storehouse of knowledge for you. Do not miss the opportunity to deepen your knowledge and expand your horizons in the field of electrical engineering with this book It will not only enrich your professional arsenal, but also help you better understand how distribution networks function in today's world, where reliability and efficiency play a key role.