POSCO Invests $34.5M in Factorial Energy for Solid-State Battery Development
POSCO Future M has invested approximately $34.5 million in Factorial Energy to secure supply chains for the production of the Solstice solid-state battery. This partnership aims to enhance material supply and expand production capacity, focusing on the development of sulfide-based batteries that outperform conventional lithium-ion batteries. The investment follows a memorandum of understanding signed in December 2025 and positions POSCO as a strategic partner while enabling Factorial to access a scalable supply chain.
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POSCO Future M has invested $34.5 million in Factorial Energy to support the production of the Solstice solid-state battery, enhancing supply chains and production capacities. This investment builds on a memorandum of understanding signed in December 2025, focusing on the development of cathode materials.
The Solstice battery features a sulfide-based design, providing higher energy density and safety compared to lithium-ion batteries. Factorial also collaborates with automotive manufacturers in Asia, Europe, and North America, gearing for a future U.S.
IPO. The partnership solidifies POSCO's role as a strategic supplier while ensuring Factorial's financial stability and access to a robust supply chain.
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