By uniting leading industrial and research partners, STELLAR accelerates the sustainable and scalable production of lithium metal anodes, a critical component for next-generation solid-state (Gen 4) and lithium-sulfur (representative of the Gen 5) batteries. The project develops a breakthrough roll-to-roll manufacturing process that combines high throughput, precision, and industrial competitiveness. Demonstrated at pilot scale (TRL 7), STELLAR bridges innovation and market deployment, strengthening Europe’s battery value chain. Through advanced in-line monitoring, AI-driven quality control, and a data-powered digital twin, STELLAR ensures smarter, more efficient production, driven by a circular economy strategy, material recovery and recycling, which reduce environmental impact. What We Aim to Achieve: By 2030, STELLAR aims to secure Europe’s leadership in sustainable lithium metal anode manufacturing for next-generation batteries.