Group14 Technologies has started EV-scale production of its silicon battery material, SCC55, at its newest factory in Sangju, South Korea.

The facility is designed to produce up to 2,000 metric tons annually, enabling 10 GWh of fast charging battery capacity as production ramps. SCC55 is used across electric mobility, grid-scale energy storage and advanced consumer applications.

Located close to battery manufacturers in Asia, the Sangju factory extends Group14’s manufacturing footprint, operating alongside the company’s commercial factory in Woodinville, Washington. A second US facility in Moses Lake, Washington, is nearing completion.

Group14 obtained full ownership of the plant, which was established as a joint venture with South Korean manufacturing conglomerate SK, in August 2025, and raised $463 million in Series D financing to scale its manufacturing capacity in the US and South Korea.

Group14’s factories are designed to rapidly scale and drop in to commercial battery cell production lines easily, the company said. The factories are delivering battery materials to more than 160 customers worldwide. 

SCC55 offers roughly five times the energy capacity of conventional graphite anode materials, according to Group14, enabling one ton of SCC55 to replace approximately five tons of graphite. By reducing the volume of graphite required in battery production, SCC55 can help manufacturers to diversify supply and improve supply chain resilience.

SCC55 is compatible with multiple cell formats and chemistries, including lithium iron phosphate (LFP), lithium manganese iron phosphate (LMFP) and high-nickel systems.

“Our customers are building silicon battery cells with SCC55 and report reaching 0-100% recharge in 90 seconds, 50 times faster than traditional lithium-ion batteries, and other designs achieving over a 43% boost in energy density,” said Rick Costantino, Group14’s CTO and co-founder.

Source: Group14 Technologies