South Korea's government and private sector will invest a combined ₩8.4 trillion, or $6.1 billion, to develop sodium-ion and solid-state batteries and strengthen competitiveness against China. The Ministry of Trade, Industry and Energy announced the Battery Industrial Technology Roadmap on the 22nd in Seoul, with LG Energy Solution, Samsung SDI, SK On, POSCO Future M, L&F and EcoPro BM attending. The government plans about ₩400 billion in new research and development spending from 2027 to 2031, while companies will invest roughly ₩8 trillion in research, development and facilities through 2030. Sodium-ion batteries will target budget electric vehicles and energy storage systems, with energy density goals of 160 Wh/kg next year and 220 Wh/kg by 2030. Solid-state development calls for a prototype in 2027, a 400 Wh/kg cell by 2028 and full commercialization in 2030, with applications including electric vehicles, robots, drones and urban air mobility. The plan also promotes joint battery standards, shared material specifications, supplier-to-cell-maker research, battery-management data sharing, application-specific standards, a domestic production tax credit and recycling targets comparable with those of the European Union. The strategy follows a decline in Korean battery makers' European market share to 35% in 2025 from 55% in 2023, while Chinese companies' share rose to 61% from 42%.