Digital Grid Commences Trial Operation of Its First 100% Self-Owned Grid-Scale Storage Battery Plant

Digital Grid Inc. (Headquarters: Minato-ku, Tokyo; Representative Director and President CEO: Yusuke Toyoda; hereinafter "Digital Grid") is pleased to announce that its subsidiary, Digital Grid Asset Management Inc. (Location: Minato-ku, Tokyo; Representative Director: Takehisa Shimada; hereinafter "Digital Grid Asset Management"), has completed its first fully company-owned grid-scale energy storage station and commenced trial operations in April 2026.

Digital Grid will handle the supply and demand management (aggregation) of the storage station and participate in the supply-demand adjustment market. Digital Grid plans to invest approximately 10 billion yen over the three-year period leading up to July 2028, making this business one of the core pillars of the group's operations.

Overview of the Storage Station Location: Ogaki City, Gifu Prefecture Name: Ogaki City Kamiishizu Ichinose Storage Station Maximum Output: 1,997 kW Rated Capacity: 8,170 kWh

About Grid-Scale Energy Storage In recent years, while the adoption of renewable energy has been progressing rapidly, solar power generation, in particular, faces the challenge of significant output fluctuations depending on weather and time of day. Therefore, "grid-scale energy storage," which can balance supply and demand by charging during surplus power periods and discharging during shortages, is expected to play a central role in power infrastructure.

Digital Grid's Grid-Scale Energy Storage Business 1. Operational outsourcing from businesses owning grid-scale batteries (a service for operating and controlling batteries owned by other companies). 2. Operation of grid-scale batteries invested in and owned by Digital Grid Asset Management. Features: Compatible with batteries from multiple manufacturers, with an industry-leading track record in operation.

Company Profile - Ranked in the High-Growth Companies Asia-Pacific 2026 - Recipient of the FY2025 Minister of the Environment's Award for Climate Change Action Company Name: Digital Grid Inc. (http://www.digitalgrid.com/) Representative: Representative Director and President CEO Yusuke Toyoda [TSE Growth Market 350A] Established: October 2017 Capital: 1,204 million yen (as of the end of January) Number of Employees: 95 (as of April 1) Location: 3F Akasaka Enokizaka Building, 1-7-1 Akasaka, Minato-ku, Tokyo Business Description: Operation of the power and environmental value trading platform "DGP" and provision of decentralized power source aggregation services.