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SOFTBANK SCALES UP DATA CENTER BATTERY PRODUCTION IN JAPAN

INDUSTRY DESK1 MIN READ
MON, MAY 11, 2026

■ AI-SUMMARIZED FROM 1 SOURCE ▸ TIMELINE

SoftBank will mass produce next-generation data center batteries at its Sakai, Osaka facility, targeting 1 GWh annual capacity by fiscal year 2027. The effort partners South Korea's Cosmos Lab and DeltaX to meet surging power demands from AI infrastructure.

SoftBank's mobile division announced plans to ramp up battery cell manufacturing to address the accelerating energy needs of artificial intelligence services. The Sakai plant will begin large-scale production of advanced battery technology developed through the partnership with Cosmos Lab and DeltaX. The 1 GWh-per-year production target by FY 2027 represents a significant expansion in domestic battery supply for data center operations. This capacity would support the power infrastructure required for large-scale AI model training and deployment. The initiative comes as Japanese companies increasingly seek to reduce reliance on overseas battery suppliers while strengthening their position in the competitive AI infrastructure market. SoftBank's investment signals growing confidence in domestically produced energy storage solutions for next-generation computing demands.

■ SOURCES

Techmeme

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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