Construction Begins on "Eurus Shiranuka Battery Park"

Eurus Energy Holdings Corporation (Headquarters: Chiyoda-ku, Tokyo; President and CEO: Tetsuya Suwabe; hereinafter "the Company") commenced construction on March 30, 2026, for the grid-scale battery storage facility "Eurus Shiranuka Battery Park" (rated output: 30,000kW, storage capacity: 143,043kWh) in Shiranuka-cho, Shiranuka-gun, Hokkaido.

As efforts to achieve carbon neutrality by 2050 progress, the introduction and expansion of renewable energy (hereinafter "RE") as a primary power source are accelerating. However, the instability of supply and demand caused by output fluctuations in wind and solar power—which are dependent on seasons and weather—remains a challenge. Consequently, the need for grid-scale battery storage is increasing as a source of adjustment to manage these fluctuations.

The Eurus Energy Group is engaged in the battery storage business to promote the widespread use of RE and stabilize the power grid. To date, the Group has developed four grid-scale battery storage facilities in Japan and two overseas (including those under construction). Furthermore, the Group performs optimal operation of these facilities through multi-use control utilizing its proprietary VPP platform, "ReEra."

This facility has been selected for the Agency for Natural Resources and Energy's "FY2024 Subsidy for Projects Supporting the Introduction of Renewable Energy and Power Storage Systems such as Grid-Scale Batteries." It is the fifth grid-scale battery storage facility developed by the Company in Japan and the second in Hokkaido. It consists of lithium-ion batteries with a rated output of 30,000kW and a storage capacity of 143,043kWh, with commercial operation scheduled to begin in December 2028. Once operational, the Company plans to control and manage the batteries using "ReEra."

Under the corporate philosophy of "Helping to preserve the global environment by disseminating and expanding the use of clean energy," the Eurus Energy Group will continue to contribute to global environmental conservation and the creation of a sustainable society by further expanding wind and solar power generation, as well as working toward a stable power supply through the use of grid-scale batteries and other technologies.

[Overview of the Grid-Scale Battery Storage Facility]

Name: Eurus Shiranuka Battery Park Location: Shiranuka-cho, Shiranuka-gun, Hokkaido Rated Output: 30,000kW Storage Capacity: 143,043kWh Manufacturer / Battery Type: GS Yuasa Corporation / Lithium-ion battery EPC: Kyocera Communication Systems Co., Ltd. Start of Construction: March 30, 2026 Start of Commercial Operation: December 2028 (scheduled)