Announcement of Contract Signing for Grid-Connected Battery Storage Installation with Yachiyo Green Energy Co., Ltd.

Sunvillage Co., Ltd. (Headquarters: Chiyoda City, Tokyo; President and Representative Director: Toru Mimura; hereinafter "our company") has signed a contract with Yachiyo Green Energy Co., Ltd. (Headquarters: Taito City, Tokyo; President and Representative Director: Takashi Mizuno; hereinafter "Yachiyo Green Energy") for the installation of high-voltage grid-connected battery storage systems. The project involves constructing a 2MW/8MWh high-voltage battery storage facility in Toyohashi City, Aichi Prefecture, with commercial operation targeted for January 2027. This project marks the second collaboration between the two companies, following the earlier battery storage project in Kuwana City, Mie Prefecture.

Since its founding in 2012, our company has conducted business under the philosophy of "harmony and collaboration with local communities," aiming to realize "safe and reliable power and energy storage plants." As the expansion of renewable energy adoption makes grid stabilization and supply-demand balance increasingly critical social challenges, our company is focusing on aggregation services and advancing the sophistication of supply-demand adjustment capabilities. Moving forward, we aim to develop and construct 250 grid-connected battery storage facilities nationwide, with a total output of approximately 500MW, contributing to stable energy supply and the realization of a decarbonized society through the development of energy infrastructure.

Overview of the Battery Storage Facility

Storage Capacity: 2MW / 8MWh (high-voltage)

Installation Site: Toyohashi City, Aichi Prefecture (within Chubu Electric Power's service area)

Battery System: Cabinet-type energy storage system ST510CS-4H manufactured by SUNGROW

Scheduled Completion: November–December 2026

Completion Rendering

[Yachiyo Green Energy]

Company Name: Yachiyo Green Energy Co., Ltd.

Representative: President and Representative Director Takashi Mizuno

Address: 5-20-8 Asakusabashi, Taito City, Tokyo

Business Activities: Development and operation management of renewable energy projects such as solar power generation

Company Website: https://yge.co.jp/

[Sunvillage]

Company Name: Sunvillage Co., Ltd.

Representative: Representative Director Toru Mimura

Tokyo Headquarters: 1-5-1 Otemachi, Chiyoda City, Tokyo, 2nd Floor, Otemachi First Square West Tower

Business Activities: Development of solar power plants and grid-connected battery storage facilities, and renewable energy projects

Company Website: https://sunvillage-co-ltd.com/

<Inquiries regarding this matter>

Sunvillage Co., Ltd.

TEL: 03-6810-2685

info@sunvillage-co-ltd.com