SoftBank Corp is expanding its horizons by entering the battery production sector. Announced on April 24, the company's mobile unit revealed plans to transform a large factory located in Sakai, Osaka into a state-of-the-art battery cell facility. This facility will primarily supply power to SoftBank's growing network of AI data centers.
This impressive facility spans 440,000 square meters and was previously used for LCD panel manufacturing before SoftBank acquired it for around 100 billion yen, or approximately $676 million. With production projected to kick off in fiscal year 2027, SoftBank aims to achieve several gigawatt-hours in mass production capacity by the following fiscal year, targeting full operational capacity by about 2031.
As of now, SoftBank has not disclosed the specific battery chemistry it intends to employ. This decision will significantly influence production costs, energy density, and competitiveness against established manufacturers like CATL and Panasonic.
SoftBank's battery initiatives are aimed at integrating its vast solar energy capabilities, which currently exceed 3 gigawatts, aligning with its engagement in the $500 billion Stargate initiative aimed at building AI infrastructure. In addition, the company has signaled a potential willingness to provide battery-related services to other businesses within Japan, transitioning from a cost-center operation to a possible revenue-generating arm.
However, one cannot overlook SoftBank’s substantial debt, totaling approximately $135 billion, when assessing new capital-intensive projects. The Sakai factory's initial acquisition cost of $676 million will only be a portion of the overall financial commitment required for retooling, equipment installation, hiring, and research and development needed to establish this production line in a competitive landscape.
For investors, this strategic move by SoftBank represents a significant infrastructure play rather than a venture into crypto markets. Although the company has a history of involvement in blockchain through its Vision Fund, this battery project does not integrate any digital currency elements.
Investors should note the four-year gap between the pilot production schedule starting in fiscal year 2027 and the anticipated full capacity in 2031. Watch for future announcements regarding the battery chemistry selection, as it will provide insight into whether SoftBank prioritizes cost efficiency or cutting-edge technology, ultimately affecting how this initiative fares against companies with years of manufacturing expertise.