Cutting-edge technology for sustainable power generation For 25 years we have enabled the profitable and reliable production of sustainable solar power. These are products that have set new standards. Design Solar modules are concluding their development towards a freely designable building material. The steps from the central idea to the solar module. Glass-glass solar modules Free design scope, high durability and stability characterise this solar building material. Glass-film solar modules Quick to install, budget-friendly, and highly profitable: our glass-film modules are extraordinarily durable "workaholics".