The book consists of selected and peer reviewed papers from 13th International Conference on Renewable and Clean Energy (2023), which aims to address and deliberate on the latest technical status and recent trends in the research and applications of renewable energy system and sources (RESSs), renewable energy sources include solar, wind, biomass, fuel cells, hydropower, hydrogen, nuclear, geothermal etc. The topics covered in the proceedings include energy transformation from renewable energy system (RES) to grid, novel energy conversion studies for RESs, power devices and driving circuits for RESs, control techniques for RESs, grid interactive systems used in hybrid RESs, performance analysis of RESs, hybrid RESSs, renewable energy research and applications for Industries, RESSs for electrical vehicles and components, artificial intelligence and machine learning studies for RESs and applications, computational methods for RESSs, smart grids and RESSs, safety and security of RESSs, renewable energy systems in smart cities. This book will be very useful for graduate students, researchers and practicing engineers working in the fields of renewable energy.