Press release
PowerX Secures 219 MWh Grid-Scale BESS Order from Banpu Japan
2025.06.05

TOKYO, JAPAN ― PowerX, Inc. (Head Office: Minato City, Tokyo; President & CEO: Masahiro Ito) today announced that Banpu Japan K.K. (Head Office: Chiyoda City, Tokyo; Representative Director: Niti Pitakteeratham),providing innovative battery storage solutions and electricity trading to support Japan’s Net Zero, has placed an order for 80 units of its ‘Mega Power’ grid-scale battery energy storage system (BESS), totaling 219 MWh. This contract represents the largest single order for the system to date.
The order is for two new grid battery storage sites to be built by Banpu Japan in Fukushima Prefecture, and Miyazaki Prefecture. Each site will have a storage capacity of 109.6 MWh, equivalent to the daily electricity consumption of approximately 10,150 households.
The primary function of these grid-connected systems is to enhance grid stability by charging during periods of excess electricity and discharging when demand is high. This project is expected to accelerate the integration of renewable energy
PowerX will continue to contribute to the expansion of renewable energy and the realization of a more sustainable society by delivering high-quality grid-scale storage systems manufactured in Japan.
[Battery Storage Sites Deploying the System]
Location | Fukushima Prefecture | Miyazaki Prefecture |
BESS | Grid-scale battery energy storage system “Mega Power” | Grid-scale battery energy storage system “Mega Power” |
Number of Battery Containers | 40 units | 40 units |
Nominal Capacity | 109.6 MWh | 109.6 MWh |
Rated Output | 26 MW | 26 MW |
Expected Start of Operation | 2028 | 2028 |
[About PowerX]
PowerX is a battery-leveraged infrastructure and energy company dedicated to accelerating renewable energy adoption in Japan. We domestically manufacture battery storage systems at our in-house facilities, deliver advanced energy storage solutions, and provide innovative software to support grid stability and energy security, driving Japan’s transition to renewable energy and decarbonization.
Company Name : PowerX, Inc.
Representative : Masahiro Ito (Director, President & CEO)
Business : Manufacturing and Sales of Large-Scale Battery Energy Storage Systems, EV Charging Station Operations and Services, Development and Manufacturing of Marine Battery Energy Storage Systems and Power Supply Business
Head Office : Midtown Tower 43F, Akasaka 9-7-1, Minato City, Tokyo, Japan
Website : http://power-x.jp
[About Banpu Japan]
Banpu Japan K.K. (BJP) is a subsidiary of Banpu NEXT Co., Ltd., a leading Net Zero Solutions provider in the Asia-Pacific region.
BJP is among the early companies in Japan to align with the global trend toward carbon neutrality. BJP is developing and operating large-scale solar power generation projects, and also one of the early developers of grid-scale battery storage systems in the country. In addition, BJP provides innovative electricity trading services to support Japan in achieving its net-zero targets.
Company Name : Banpu Japan K.K.
Representative Director : Niti Pitakteeratham
Business : Development, construction, and operation of renewable energy projects
Promotion and proposal of energy solution business and smart city toward carbon zero, and electricity trading business
Location : P.O. Box 116, Kasumigaseki Building, 33rd floor, 3-2-5, Kasumigaseki, Chiyoda-ku, Tokyo
Website : https://banpu-japan.com/english/company.html