(Update on Disclosed Matter) Notice of the Start of Commissioning at the Furusato Battery Storage Facility

Trial operation commenced as scheduled in May 2026 at the Furusato Battery Storage Facility in Ueda, Nagano Prefecture. Trial operation is expected to be completed in June, after which the facility is scheduled to formally participate in the wholesale electricity market and balancing market and commence full-scale operations.

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Improvement

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Agreements reached under this partnership

Impact on Business Performance

The impact on our consolidated results for the fiscal year ending December 2026 is currently under review.

Alliance start dateMay 2026 (commencement of trial operation)

Agreements reached under this partnership
Item	Details
Alliance start date	May 2026 (commencement of trial operation)
Impact on Business Performance	The impact on our consolidated results for the fiscal year ending December 2026 is currently under review.

Items this document does not state (21)

Name of alliance partnerAlliance partner's business activitiesAlliance partner's locationAlliance partner's capitalAlliance partner's net salesAlliance partner's operating incomeType of allianceDetails of the allianceNumber of shares acquiredAcquisition priceShareholding ratioOverview of the joint ventureOwnership ratioDispatch of directors and officersContract PeriodNumerical targets under the allianceShareholding PolicyDate of board resolutionContract DateShare Acquisition Date and Payment DateChange in major shareholders

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The reasons the company gives

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Trial operation at the Furusato Battery Storage Facility commenced as originally scheduled.

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