Program for planning PV facades (grip coupled system). PVcad version 1.2.1 offers interfaces to civil engineering CAD systems (DXF-Import) as well as extensive databases for weather data at many different locations, modules and inverters. Specially adapted algorithms ensure a fast calculation of the electrical energy yield. Shading of modules is calculated (direct and diffuse light). Ease of use and a graphical presentation of the calculated results give further support to the user.