PowerX Receives Grid-Scale BESS Order for Battery Farm Jointly Funded by Mitsubishi Estate, ITOCHU, and Tokyo Century

TOKYO, JAPAN --- PowerX, Inc. (Head Office: Tamano City, Okayama Prefecture; Director, President and CEO: Masahiro Ito; Securities Code: 485A) has received an order for 102 units of its battery energy storage systems (BESS), with a total rated capacity of 230.1 MWh. The systems are for a grid-scale battery farm jointly funded by Mitsubishi Estate Co., Ltd. (Head Office: Chiyoda City, Tokyo; President and CEO: Atsushi Nakajima), ITOCHU Corporation (Head Office: Minato City, Tokyo; President & COO: Keita Ishii), and Tokyo Century Corporation (Head Office: Chiyoda City, Tokyo; President and CEO: Koji Fujiwara).

The “Fukuoka Chikuzen Town Battery Farm,” to be developed jointly by the three companies in Chikuzen Town, Fukuoka Prefecture, is scheduled to begin commercial operation in FY 2027. While the adoption of renewable energy is advancing in the Kyushu area, output curtailment has become a challenge. By connecting to the power grid and charging and discharging, the battery farm will contribute to stabilizing the power supply-demand balance and mitigating output curtailment.

The battery farm will use the “Mega Power 2500,” a 10-foot container-sized BESS supplied as part of “PowerX × Bluestorage,” a co-branded package jointly offered by PowerX and ITOCHU.

This project has been selected to receive a subsidy from the Ministry of Economy, Trade and Industry (METI) under the “FY 2025 Subsidy Program for Supporting the Introduction of Energy Storage Systems to Promote the Adoption of Renewable Energy.”

PowerX will continue to contribute to the realization of carbon neutrality in Japan by supplying domestically developed and manufactured battery storage systems.

Details of this order are as follows:

1. Product Ordered

A total of 102 units of PowerX’s “Mega Power 2500” Grid-Scale BESS

2. About the Battery Farm Deploying PowerX's Systems

• Site Name: “Fukuoka Chikuzen Town Battery Farm”

• Location: Chikuzen Town, Asakura District, Fukuoka Prefecture

• Number of Battery Containers: 102 units

• Rated Capacity: 230.1 MWh (equivalent to the daily electricity consumption of approximately 21,500 average Japanese households)

• PCS Output: 67 MW

• Commercial Operation Start Date: January 2028 (scheduled)

• Business Entity: Fukuoka Chikuzen Town Battery Farm LLC

• Investors: Mitsubishi Estate Co., Ltd., ITOCHU Corporation, Tokyo Century Corporation

3. About the “Mega Power 2500” Grid-Scale BESS

• Size: 10-foot container (ISO standard)

• Battery Type: Lithium Iron Phosphate (LFP)

• Storage Capacity: Nominal Capacity 2,507 kWh / Rated Capacity 2,256 kWh (per unit)

• Place of Production: Tamano City, Okayama Prefecture, Japan

^{* The revenue associated with this project is included in the anticipated orders projected to generate revenue in FY 2027, as presented in the financial results briefing materials disclosed on May 14, 2026. This press release is issued once agreement on public disclosure has been reached with the customer, and its timing does not necessarily coincide with the necessity or timing of timely disclosure.
This document has been translated from the Japanese original for reference purposes only. In the event of any discrepancy between this translated document and the Japanese original, the original shall prevail.}