In the field of sustainable, green energy systems we develop technologies for the Energiewende. Our activities cover all scales from catalyst development to mass and heat conversion networks. With the topic bioinspired energysystems we are aiming at new concepts of energy storage to contribute to a more resilient transformation. The core of this biomimetic strategy is to identify concepts of biological systems at different organizational levels (compounds, cells, organs, individuals, population groups, ecosystems). From these, we select case studies for transformation into technical systems that integrate biochemical or biological components (energy carriers, enzymes, bacteria) or biomimetic components (artificial leaf, second sphere coordinated metal complexes).