This lecture covers the performance and limits of photovoltaic (PV) cells, including the relationship between light intensity and current-voltage characteristics. It discusses the efficiency gains from concentrating light and the impact of temperature on power output. The presentation delves into the challenges and potential of large-scale PV energy production, highlighting the energy yield and density of PV systems. It also explores the market trends, production technologies, and the evolution of thin-film PV modules. The lecture concludes with an overview of advanced PV technologies, such as multi-junction cells and concentrators, emphasizing their efficiency and applications in space and terrestrial systems.