Kalle Saarimaa is one of Finland’s leading thinkers in the circular economy. He currently serves as the head of Fortum’s recycling business and also on the boards of a few circular economy companies. He combines the circular economy, the energy revolution and biodiversity into one whole. Kalle Saarimaa leads us to current bioeconomy themes: Are bio-based materials a sustainable solution to future challenges? What systemic changes are needed to make a real circular economy possible? How are energy and the circular economy related?