PVSyst is a powerful software for designing photovoltaic systems for residential, commercial, and industrial applications. The program can be used to analyze the performance of a potential PV system and help identify potential problem areas. It can also provide helpful information such as how much energy can be produced by a system, system sizing, and current and future energy costs. PVSyst can help identify the best components to use and analyze the economic viability of investing in solar energy. Additionally, it can be used to help users understand the impact of shading and other environmental factors on the performance of their system.