The transition from traditional fossil fuel systems to circular and bio-based systems presents a significant challenge but also a valuable opportunity to advance economic and environmental objectives. In this context, the EU-funded SUSTRACK project will support policymakers in their efforts to pursue a sustainable transition. Specifically, it will provide comprehensive and impactful assistance over the course of three years. The project will analyse key economic, social and environmental factors to offer accurate and effective guidance. This will help ensure that the transition to bio-based systems is environmentally responsible while maintaining a strong economy.