Located in the heart of Brittany in France, BlueSolutions is a pionneer in devoloping and manufacturing lithium metal batteries. For over 30 years, their Lithium-Metal-Polymer (LMP®) technology was produced and used for the transportation and electricity storage sectors. This expertise will contribute to the SEATBELT project to achieve by 2026 the next generation of all-solid-state batteries. BlueSolutions’ knowledge in the processability of lithium metal and in cathode and electrolyte materials will be shared with the partners in order to reach this common goal. Optimisation of battery assembly and cell design will be thorougly studied within their R&D labs and they will be in charge of the up-scale. Finally, they will participate to validate the technology in pre-industrial conditions.