The material and energy costs of building structures can be reduced through an optimized reinforcement design, optimization of the external form in the sense of a shell construction, and through topology optimization - i.e., improvement of the internal component structure. In addition, embedding renewable energy technologies can reduce the environmental impact during the use phase. A new way of embedding renewable technologies into optimized, textile reinforced concrete structures will be presented including the design concept, the production concept and a joint system. Some aspects of the structural behaviour of TRC slabs with cavities like bending behaviour, shear capacity and pull-out behaviour of the anchorage will be outlined