As a high-performance specialist in the industry of solar energy, we develop and build innovative PV solutions all around buildings. Whether as patio or sun-porch, our solar terrace or winter garden modules set an optical high-light which provides shadow while reducing your electricity costs. At a2-solar, we offer you the following: 1. Highest German Quality and Experience 2. Individual quotes customized according to request details, considering all architectonic aspects and requirements 3. In-time delivery 4. Reliable partner 5. individual modules. In contrast to normal window glass the solar glass differs chemically with a lower iron content. When looking at the edges of a glass pane, the difference becomes visible: the window. Solar glass - also called photovoltaic glass - is a special glass which - in comparison to normal window glass - allows for a 10% higher transmission due to lower iron contents; hence the.