The transformation of traditional power systems into smart grids represents a major leap toward sustainability and efficiency. Smart grids integrate digital communication, automation, and renewable energy to optimize power distribution. Smart Grid Technologies and Applications explores the architecture, components, and operation of intelligent energy systems. The book covers topics such as smart meters, demand-side management, grid integration of renewables, and cybersecurity challenges. It also discusses policy frameworks and emerging innovations in grid automation. Combining engineering insight with real-world case studies, it serves as a key reference for energy professionals and researchers.