PowerX Receives First Order from Ray8 Energy for Battery Energy Storage System

PowerX, Inc. (Head Office: Tamano City, Okayama Prefecture; Director, President and CEO: Masahiro Ito; Securities Code: 485A) has received its first order from Ray8 Energy Inc. (Head Office: Minato City, Tokyo; Representative Director: Tomohide Den) for grid-scale battery energy storage systems (BESS). Ray8 Energy develops grid-scale battery storage projects in Japan under ICG, a global alternative asset manager.

The system ordered will be installed at the “Karumai Battery Farm,” which Ray8 Energy is developing in Karumai Town, Iwate Prefecture, with operation scheduled to commence in XX 2026. Connected to the Tohoku regional grid, the battery farm will store surplus electricity and release it during shortages, helping to balance supply and demand. This will contribute to the further expansion of renewable energy adoption.

With capital support from ICG, Ray8 Energy aims to develop and own more than 1,000 MW of grid-scale battery farms over the next five years, accelerating Japan’s energy transition.

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

Details of this order are as follows.

1. System Ordered

A total of 3 units of PowerX’s “Mega Power 2700A” Grid-Scale BESS

2. Installation Site

• Site Name: “Karumai Battery Farm”

• Location: Karumai Town, Kunohe District, Iwate Prefecture

• Number of Battery Containers: 3 units

• Storage Capacity (Nominal): 8,226 kWh

• PCS Output: 1.9 MW

• Operator: Ray8 Energy Inc.

3. Commercial Operation Start Date

December 2026 (scheduled)

4. System Specifications (“Mega Power 2700A”)

• Size: 20-foot container (ISO standard)

• Battery Type: Lithium Iron Phosphate (LFP)

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

• 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.}