Article

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.