How it works 1. Select your PVsyst report files (pdfs) using "Choose files" - 2 files allowed. 2. Click on "Compare" and your main solar data and loss diagram will be presented in a tabular format with the option to export to Excel workbook. Supported versions 1. PVsyst version 7+ - older versions may produce unexpected results. 2. Grid-connected systems; standalone and pumping reports are not supported.