Smart grid is the conception of use of digital information. It controls technology to improve reliability, security, and efficiency of the existing electric grid with dynamic optimization of grid operations and resources, with full cyber-security. Smart grid deployment and integration of distributed resources and generation includes renewable resources for development and incorporation of demand response, demand-side resources, and energy-efficiency resources. So, presently Smart Grid Technology became a hot issues. This book is based on the research of Smart Grid Technology with Smart devices and Smart applications for Smart Cities for digital India.