Japan invests $660M to boost all-solid-state battery tech and supply chain for 2030 commercialization.

Japan's government has allocated $660 million in subsidies to accelerate the development and supply chain of all-solid-state batteries (ASSBs), aiming for commercialization by 2030. This support is part of the Battery Stable Supply Assurance Plan, focusing on next-generation battery technologies like ASSBs and low-cost lithium iron phosphate batteries. Japanese automakers such as Toyota, Honda, and Nissan are already piloting ASSB production lines. Despite Japan's leadership in ASSB patents and technology, competition from Chinese low-cost LFP batteries and global players in solid-state battery tech remains a challenge. The industry is focusing on improving battery yield, quality, and reducing costs of key materials in 2026 to maintain competitiveness.