What is SoftBank Corp.'s plan for battery manufacturing, and where will it be located?

SoftBank Corp. plans to begin large-scale battery cell manufacturing at its Sakai, Osaka plant starting in the fiscal year beginning next April, in partnership with South Korea’s Cosmos Lab and DeltaX Co., aiming for an initial annual output capacity of one gigawatt-hour (GWh) of energy storage systems.

What technologies and partners are involved in SoftBank’s new battery initiative, and what are their respective roles?

SoftBank is partnering with Cosmos Lab, which will contribute zinc-halogen technology to develop safer battery cells, and DeltaX Co., which brings expertise in high energy-density battery designs; together, they will enable mass production under SoftBank’s new ventures AX Factory and GX Factory.

SoftBank Plans to Make Large-Scale Batteries for AI Data Centers

May 10, 2026

SoftBank plans large-scale battery cell manufacturing at its Osaka plant to power AI data centers, partnering with Cosmos Lab and DeltaX. The facility targets 1 GWh annual capacity, aiming for ¥100 billion revenue by fiscal 2030.

bloomberg

2026-04-23

SoftBank Prepares to Manufacture Batteries for AI Data Centers

2026-05-10

SoftBank Plans to Make Large-Scale Batteries for AI Data Centers

SoftBank Plans to Make Large-Scale Batteries for AI Data Centers

FAQ