PowerX Delivers Battery Energy Storage Systems to Daiwa House Industry’s Grid-Scale Battery Storage Project

TOKYO, JAPAN --- PowerX, Inc. (Head Office: Tamano City, Okayama Prefecture; Director, President and CEO: Masahiro Ito; Securities Code: 485A) has delivered four units of its “Mega Power 2700A” battery energy storage systems (BESS), totaling 9.8 MWh in rated capacity, to a new grid-scale battery storage project developed by Daiwa House Industry Co., Ltd. (Head Office: Kita Ward, Osaka City; President and COO: Hirotsugu Otomo) in Kurate Town, Fukuoka Prefecture. The project commenced operation on September 16, 2026.

The newly operational “DREAM Storage Battery Fukuoka Kurate Grid-Scale BESS” is the first high-voltage battery storage project opened by Daiwa House Industry since entering the battery storage business. Located on the premises of the company’s Kyushu Factory, the project is connected to the regional power grid, where the expansion of solar power means that electricity generated during the day can at times exceed demand. The project charges during these hours and discharges in the evening and later, when demand rises, making full use of renewable energy and helping stabilize the balance between power supply and demand.

PowerX’s role extends beyond manufacturing and delivering the BESS. Following commencement of operation, PowerX also operates the project as the resource aggregator through its own electricity business.

This project has been selected to receive a subsidy from the Ministry of Economy, Trade and Industry (METI) and the Agency for Natural Resources and Energy (ANRE) under the “FY 2024 Subsidy Program for Supporting the Introduction of Energy Storage Systems to Promote the Adoption of Renewable Energy.”

As a leader in BESS manufacturing in Japan, PowerX will continue to contribute to the further expansion of renewable energy through both the supply of its products and the operation of battery storage projects.

Details of the delivery are as follows:

1. System Delivered

Four units of PowerX’s “Mega Power 2700A” Grid-Scale BESS

2. Installation Site and Delivery Details

• Site Name: “DREAM Storage Battery Fukuoka Kurate Grid-Scale BESS”

• Location: 448-8 Ninobu, Kurate Town, Kurate District, Fukuoka Prefecture (on the premises of Daiwa House Industry’s Kyushu Factory)

• Number of Battery Containers: 4

• Total Storage Capacity: 9.8 MWh (rated) (equivalent to the daily electricity consumption of approximately 920 average Japanese households*)

• PCS Output: 1.9 MW

• Commencement of Operation: September 16, 2026

• Project Operator: Daiwa House Industry Co., Ltd.

• Aggregator: PowerX, Inc.

3. About the “Mega Power 2700A” Grid-Scale BESS

• Size: 20-foot container (ISO standard)

• Battery Type: Lithium Iron Phosphate (LFP)

• Storage Capacity: Nominal Capacity 2,742 kWh / Rated Capacity 2,468 kWh (per unit)

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

^{* The household equivalent is calculated based on daily electricity consumption of 10.7 kWh per household, derived from the Ministry of the Environment’s “FY 2023 Survey on the Actual Conditions of Carbon Dioxide Emissions from Residential Sector.”
** PowerX, Inc. is a registered retail electricity provider and a notified specified wholesale supply provider under the Electricity Business Act.}

^{Revenue from the project described in this press release is expected to be recorded in the fiscal year ending December 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.}