Samsung SDI has outlined its timeline for the commercialization of solid-state batteries. According to the company, mass production is scheduled to begin during the second half of 2027 at its Ulsan plant in South Korea.
Earlier this month, Samsung SDI presented an investment plan covering the period from 2026 to 2040. Under the plan, the company intends to invest a total of 25 trillion won (approximately US$17 billion) in its Ulsan and Cheonan facilities. Of that amount, 16 trillion won is allocated to expanding the Ulsan plant, where production lines for solid-state batteries, lithium iron phosphate (LFP) batteries for energy storage systems, and sodium-ion batteries are planned. Another 9 trillion won is earmarked for the Cheonan site, which serves as a technology development and validation center.
Pilot Production Supports Manufacturing Ramp-Up
To prepare for mass production, Samsung SDI has established a 6,500-square-meter pilot production line at its research and development center in Suwon, according to the company. Several rounds of material and manufacturing process validation have been completed there. The future production line in Ulsan is expected to build on the results of the pilot facility.
Samsung SDI is developing the technology using sulfide-based solid electrolytes. The company has set a target energy density of more than 900 Wh/L. According to Samsung SDI, sample cells have already been delivered to potential customers in the electric vehicle, embodied AI, and humanoid robotics sectors for evaluation.
According to the company, commercialization will begin in South Korea before the production model is gradually expanded to overseas manufacturing sites once the scaling process has been validated.
