This book offers a thorough review of new ideas and developments for solar photovoltaic (PV) energy systems. Efforts to reduce costs often take two forms: enhancing the materials and physical construction of PV cells and utilizing power electronic circuits with the PV generator to increase the system's efficiency. Furthermore, random climatic factors, such as temperature and irradiance, have a significant impact on PV system performances. As a result, modeling PV panels and creating optimization plans to maximize power extracted and boost efficiency under various irradiance circumstances are crucial tasks. This book provides a comprehensive overview of cutting-edge techniques in solar PV energy systems.