Sustainable Holdings' First Achievement: Completion and Delivery of a 2MW/8MWh Grid-Scale Battery Storage System in Matsusaka City, Mie Prefecture

Sustainable Holdings Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; Representative Director: Kenta Mogi) is pleased to announce the completion and delivery of its first megawatt (MW)-class grid-scale battery storage system (output: 2MW / capacity: 8MWh) in Matsusaka City, Mie Prefecture. This project effectively utilizes previously unused land and contributes to the stabilization of regional power infrastructure. Our company handled the entire process, from land acquisition to construction and final delivery.

▲ The 2MW/8MWh grid-scale battery storage system completed in Matsusaka City, Mie Prefecture. The orderly arranged battery units support regional power stability.

Next-Generation Power Infrastructure Utilizing Idle Land The grid-scale battery storage system completed in Matsusaka City, Mie Prefecture, features a megawatt-class scale with an output of 2MW and a capacity of 8MWh. Assuming an average daily power consumption of approximately 10kWh per household, an 8MWh capacity is equivalent to the daily power consumption of about 800 households. This project was initiated with the goal of effectively utilizing idle land that had long been unused. Through the introduction of large-scale grid battery storage, we are creating new value for the land while playing a role in supporting future social infrastructure by facilitating the spread of renewable energy and providing power supply-demand adjustment functions.

▲ The latest grid-scale battery storage units. These enable large-scale energy storage and realize the optimization of power supply and demand.

The Strengths of Sustainable Holdings' "End-to-End" Approach This project marks the first grid-scale battery storage initiative for Sustainable Holdings. Our greatest strength lies in our ability to provide one-stop, end-to-end support, ranging from "land acquisition" for grid-scale batteries to on-site "construction" and final "delivery." By eliminating the need for multiple intermediaries, we have achieved shorter construction periods, cost optimization, and the prevention of information discrepancies on-site, resulting in a smooth implementation under consistent quality control.

▲ Consistent in-house handling from sales and order receipt to construction. We rapidly execute high-quality infrastructure development.

Future Outlook Starting with this first achievement in Matsusaka City, Mie Prefecture, Sustainable Holdings will continue to provide high-quality battery storage solutions to address challenges in power infrastructure and the utilization of idle land across the country. We plan to further strengthen our system to respond flexibly and rapidly to customer needs by leveraging the strengths of our end-to-end approach.

【Company Information】 Company Name: Sustainable Holdings Co., Ltd. Address: Shibuya Sakura Stage SAKURA Tower 6F, 3-2 Sakuragaokacho, Shibuya-ku, Tokyo 150-0031 Representative: Kenta Mogi, Representative Director Established: 2021 URL: https://st-holdings.co.jp/

Business Description: Development of diversified sustainability businesses, including the ENERGY business (construction of renewable energy infrastructure such as solar power plants and battery storage), AirElixir business (provision of atmospheric water generators), and glampark business (operation of glamping facilities).

【Inquiries Regarding This Matter】 Sustainable Holdings Co., Ltd. Energy Division