Solar energy is a infinite resource and is best for a CO₂ neutral production of electricity and heating. As a renewable energy resource, solar energy is government-promoted in many ways – for example, with feed-in compensation and a purchase guarantee for those who generate. This adviser shows you whether the roof of your building is suitable for a photovoltaic or solar thermal energy system and if the installation would pay itself off. Should you decide to install a system, please consult a specialised company because this advisor is not a planning tool.