SoftBank launches large-scale battery business in Japan to build AI-era power infrastructure

SoftBank announced the launch of a Japan-based, large-scale battery business to build next-generation power infrastructure aimed at meeting rapidly growing electricity demand from AI adoption. The move signals increased domestic investment in energy storage and manufacturing, potentially boosting related suppliers and the broader tech and industrial supply chain. SoftBank’s shares showed intraday strength following the news, highlighting investor optimism. For the Japan 225 index, the initiative could be modestly positive by supporting activity among large-cap tech and industrial components exposed to AI infrastructure and battery supply chains, though the market impact will depend on execution, capital commitment and timeline for commercial-scale output.