The aim of the BioC4 project is to develop an industrial production process for bio-based Isobutanol, which can be used as raw material for biofuel, solvent, or bioplastics. For that purpose, a strong isobutanol-producing industrial yeast strain will be developed. It will have the ability to ferment both hexose and pentose sugars under the harsh conditions present in lignocellulose hydrolysates. In parallel, promising miscanthus genotypes with high saccharification potential will be identified and the most interesting ones will be analyzed and evaluated as eco-friendly raw material. The overall aim of the project is to develop a novel bio-based value chain with minimized environmental impacts and maximized benefits for all stakeholders. This will help policy makers to identify other products and raw materials with a significant reduced carbon footprint.