News Release​

【MIRARTH Energy Solutions】Concluded a Basic Agreement on Comprehensive Collaboration with Power X for Grid Energy Storage Stations ~ Accelerating the Construction of Grid Energy Storage Stations through Joint Promotion ~

February 27, 2026

MIRARTH Energy Solutions Co., Ltd. (Headquarters: Shinjuku-ku, Tokyo / Representative Director: Kentaro Taniguchi, hereinafter referred to as "MES"), a group company of MIRARTH HOLDINGS, Inc. (Headquarters: Chiyoda-ku, Tokyo / Representative Director: Kazuichi Shimada), is pleased to announce that PowerX Co., Ltd. (Headquarters: Tamano City, Okayama Prefecture / Director Representative Executive Officer and CEO: Masahiro Ito, hereinafter referred to as " PowerX) and PowerX) and the Company are pleased to announce that they have entered into a basic agreement (hereinafter referred to as the "Partnership") for the joint development and operation of grid energy storage stations.

The Group has built a strong cooperative relationship with the MSB (MIRARTH Storage Battery) Kanagawa Aikawa Energy Storage Station and using it for supply-demand balancing in the retail electricity business, including PowerX's corporate renewable energy power services, as well as operating in the wholesale electricity trading market, capacity market, and supply-demand adjustment market.

Background and Purpose of this Agreement

In recent years, as the introduction of renewable energy has expanded, the importance of grid storage stations to stabilize the power system from the perspective of mitigating output fluctuations has rapidly increased. MES has been promoting renewable Energy Business, including solar power generation, based on the Group's purpose of "To design sustainable environments for a happier future for both people and our planet.." PowerX has state-of-the-art battery storage technology and operation systems, and by combining the development capabilities cultivated through MES's renewable Energy Business with PowerX's technological capabilities, PowerX aims to contribute to the stabilization of electricity supply and demand and accelerate the construction of grid energy storage stations, which are next-generation energy infrastructure, for the realization of a carbon-neutral society.

Main collaborations in this partnership

Development Period : 2026~2028 (3 years)
Project development: Both companies jointly select suitable sites and carry out sales activities
Project Implementation: MES takes the lead in scrutinizing projects (due diligence), executing investments, managing equipment construction, and formulating business cash flows.
System configuration : Adopts the "Mega Power" series of energy storage systems for the power system made by Power X
Power Operation: Adopting the Toring Scheme by Power X

The Group will continue to utilize the development know-how cultivated in renewable Energy Business and collaborate with PowerX's technological capabilities to sincerely face the social issue of stable supply of electricity and establish a sustainable energy infrastructure.

MIRARTH HOLDINGS Group's commitment to Energy Business

The Group has set "To design sustainable environments for a happier future for both people and our planet." as our Purpose and hopes to contribute to solving social issues and achieving the SDGs by engaging in sustainability activities through its business, such as supplying housing and developing renewable energy. Since entering the mega solar business in 2013, the Group's Energy Business has been We have expanded the scale of our business year by year, including entering the biomass power generation business and the wind power generation business. MES, which plays a central role in Energy Business, develops, operates, and manages renewable energy power generation businesses centered on solar power generation with the aim of achieving carbon neutrality with its corporate vision of "Creating a Carbon-Neutral World with Renewable Energy." In February 2024, we established a local subsidiary in Cambodia and are promoting initiatives aimed at coexistence with the local community while expanding our business scope, such as starting research on the processing of Cambodian cashew nuts in Cambodia and the biomass fuel conversion business using cashew nut shells. In addition, as a Addressing climate change, we have set a medium- to long-term goal of reducing greenhouse gas emissions by 45% by FY2030 (compared to FY2022) and net-zero by FY2050*.
We will continue to support and promote initiatives to achieve the SDGs throughout the Group and strive to realize a sustainable society.

*Released on March 29, 2024
"Notice of Revision of Medium- to Long-Term Targets for Greenhouse Gas Emissions Reduction ~Promoting Initiatives to Achieve Carbon Neutrality by 2050~"