Power systems are vast networks of small electrical units that generate, supply and distribute electric power to different facilities. This book consists of some of the vital topics related to power systems such as smart grid systems, power system control and protection, sustainable electric energy, power transmission and distribution systems, and computational techniques for power systems. It is a compilation of chapters that discuss the significant concepts and emerging trends in the field of power systems. Those in search of information to further their knowledge will be greatly assisted by this book.