As AI adoption drives growing power consumption across computing infrastructure, managing electricity costs and securing stable power supply have become critical challenges for data center operators. New grid connection schemes that allow earlier interconnection by combining demand curtailment during periods of grid congestion are also being discussed.

PowerX Energy Blade is a high-output, rack-mounted battery storage system built to address these challenges. It uses lithium-ion cells optimized for rapid charge and discharge, enabling bidirectional response to grid supply-demand fluctuations within milliseconds. The system supports the 800V DC power delivery required by the latest AI GPUs and can also replace conventional battery backup units (BBUs).

The system turns data centers—traditionally pure power consumers—into flexible grid resources. The battery responds to grid signals within milliseconds, releasing or absorbing power as needed, while PowerX's proprietary Compute Modulation technology dynamically adjusts server workloads so that grid services can be delivered without disrupting the data center's core computing operations.

For data center operators, the system opens new revenue streams through participation in frequency containment reserve (FCR) or similar grid flexibility markets and demand response (DR) programs. Peak shaving and load leveling can also unlock practical benefits such as earlier grid connection under flexible connection schemes, more favorable power supply contracts, and the ability to maximize server deployment within existing power budgets.

PowerX Energy Blade follows the "Mega Power DC" scalable modular data center announced in February 2026, extending the company's battery-powered solution portfolio to building-based data centers. Together, these products advance PowerX's commitment to building the social infrastructure that underpins the AI era—from both the power and computing sides.

A white paper detailing the system's technical concept and demonstration data is available at: https://power-x.jp/datacenter/energy-blade

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.

Media Contact: pr@power-x.jp

The MOU sets an indicative target of approximately 500 MWh of BESS capacity over an initial three-year period to support the large-scale integration of renewable energy and strengthen grid stability in Montenegro.

Montenegro adopted its National Energy and Climate Plan in December 2025, setting 2030 targets that include a minimum 50% share of renewable energy in gross final energy consumption. EPCG, the country's largest electricity producer, has identified BESS as a key component of its grid modernization and renewable energy integration efforts.

Under the MOU, the parties will collaborate together to identify optimal BESS deployment plans to support grid reliability, peak shaving, and frequency regulation, with comprehensive after-sales support. PowerX will also explore the potential establishment of local BESS assembly capabilities in Montenegro.

Montenegro's EU candidate status, coupled with its power interconnection with Italy, makes the country a strategically important market for clean energy infrastructure in Europe. PowerX aims to leverage this cooperation as a foundation for expanding its BESS business into the European market.

"Battery energy storage systems are becoming a core part of modern energy infrastructure, enabling greater integration of renewable energy while supporting grid stability, flexibility, and resilience," said Masahiro Ito, CEO of PowerX. "As Japan's leading BESS provider, PowerX is pleased to partner with EPCG to support Montenegro's energy transition and the modernization of its power system. Through this strategic cooperation, we aim not only to deploy advanced battery storage solutions, but also to build a long-term foundation for PowerX's activities in Montenegro and the wider region, including the development of local battery system assembly capabilities."

"This partnership represents an important step in the modernization of our power system and further confirms EPCG's commitment to an energy transition based on innovation and sustainability," said Zdravko Dragaš, CEO of EPCG. "Cooperation with PowerX gives us access to advanced energy storage technologies, which are essential for the stable integration of renewable energy sources and the long-term energy security of Montenegro."

About PowerX, Inc.
PowerX is a Japanese energy storage company listed on the Tokyo Stock Exchange Growth Market. Headquartered in Tamano City, Okayama Prefecture, with offices and an R&D center in Tokyo, PowerX's core business spans the development and manufacture of battery energy storage systems (BESS), scalable modular data centers, and battery-buffered EV charging systems, as well as the development and operation of grid-scale battery farms. To date, its BESS has been selected for 153 project sites in Japan, with a cumulative adopted capacity of 2.8 GWh.

For more information, visit https://power-x.jp/

About Elektroprivreda Crne Gore (EPCG)
Elektroprivreda Crne Gore AD Nikšić (EPCG) is Montenegro's national electricity utility, responsible for generating, transmitting, distributing, and supplying the majority of the country's electrical power. With around 874 MW of installed capacity—including major hydropower plants, a key thermal power facility, and an expanding portfolio of wind and solar projects—EPCG plays a central role in Montenegro's energy transition.

For more information, visit https://www.epcg.com/

Media Contact:
PowerX, Inc. — Corporate Communications
Email: pr@power-x.jp

Furthermore, a new company called 'Ocean Power Grid Inc. (https://oceanpowergrid.jp/) ' will be established in the third quarter of 2023 to advance the maritime power transmission business utilizing Battery Tankers. This company will own, sell, and operate the battery tankers in Japan and abroad. PowerX is seeking business partners worldwide for this new technology and business endeavor.

PowerX has signed a memorandum of understanding and a Partnership Agreement with Kyushu Electric Power Co., Ltd. and the City of Yokohama to pursue the novel maritime power transmission concept and achieve carbon-neutral ports.

The first Battery Tanker is scheduled for domestic and international field testing starting in 2026. This electric propulsion vessel boasts a length of 140 meters and will be equipped with 96 containerized marine batteries, providing a total capacity of 241MWh.

The onboard battery system is based on our proprietary module design, featuring safe and reliable lithium iron phosphate (LFP) battery cells that ensure a lifespan of over 6,000 cycles. Additionally, the battery system is highly scalable, allowing for the installation of additional batteries to create larger electric transport vessels such as Power Ark 1000 or even larger sizes to meet specific mission requirements. The system includes dedicated gas emission control and fire suppression mechanisms to ensure safety. Real-time monitoring of the battery system, charging controllers, and power conversion systems further enhance safety measures. All batteries will be manufactured in-house in Okayama Prefecture and are scheduled to obtain international ship classification certifications and applicable standards such as DNV and Class NK, undergoing rigorous testing to meet the strictest conditions. Delivery of the batteries is scheduled to commence by mid-2024.

The Role of Battery Tankers:

Its onboard battery systems allow Battery Tankers to store and transport surplus electricity generated from renewable sources. Decommissioned or idle thermal power plants located near ports can be retrofitted into charge/discharge points for the Battery Tankers, where the power is transmitted to users via grid connections on the land, enabling further effective use of renewable energy.

Moreover, areas with high potential for renewable energy generation are often distant from urban areas and regions with high power demand. Strengthening transmission infrastructure becomes essential in such cases. Given the current energy density of lithium-ion battery cells, the Battery Tanker is an optimal solution for short-distance maritime power transmission from land to land, complementing existing inter-regional grid transmission lines. For instance, in Japan, a Battery Tanker can carry power from regions with high renewable energy supply potential, such as Kyushu and Hokkaido, to high-demand areas of Honshu or for inter-island power transmission.

Battery Tankers will establish new power transmission networks across the sea, promoting renewable energy storage, supply, and utilization. As the energy density of batteries improves and their cost decreases, it is expected that longer-distance maritime transmission from offshore wind power plants to the land will become feasible. Battery Tankers offer a practical solution, especially in Japan, which is prone to earthquakes and has deep-sea surroundings. The ship-based solution resolves issues such as extended downtime from undersea cable malfunctions and repairs and the high costs associated with ultra-high voltage connections and substations. As a result, the Battery Tankers will enable the installation of offshore wind farms in areas where undersea cable deployment was once challenging. Using maritime power transmission via Battery Tankers can address various challenges associated with offshore wind power, not only in Japan but also contribute to the widespread adoption of renewable energy worldwide.

Image of Power Ark 100 Series Model

Press Contact: pr@power-x.jp
General Inquiry: info@power-x.jp

Furthermore, a new company called 'Ocean Power Grid Inc. (https://oceanpowergrid.jp/) ' will be established in the third quarter of 2023 to advance the maritime power transmission business utilizing Battery Tankers. This company will own, sell, and operate the battery tankers in Japan and abroad. PowerX is seeking business partners worldwide for this new technology and business endeavor.

PowerX has signed a memorandum of understanding and a Partnership Agreement with Kyushu Electric Power Co., Ltd. and the City of Yokohama to pursue the novel maritime power transmission concept and achieve carbon-neutral ports.

The first Battery Tanker is scheduled for domestic and international field testing starting in 2026. This electric propulsion vessel boasts a length of 140 meters and will be equipped with 96 containerized marine batteries, providing a total capacity of 241MWh.

The onboard battery system is based on our proprietary module design, featuring safe and reliable lithium iron phosphate (LFP) battery cells that ensure a lifespan of over 6,000 cycles. Additionally, the battery system is highly scalable, allowing for the installation of additional batteries to create larger electric transport vessels such as Power Ark 1000 or even larger sizes to meet specific mission requirements. The system includes dedicated gas emission control and fire suppression mechanisms to ensure safety. Real-time monitoring of the battery system, charging controllers, and power conversion systems further enhance safety measures. All batteries will be manufactured in-house in Okayama Prefecture and are scheduled to obtain international ship classification certifications and applicable standards such as DNV and Class NK, undergoing rigorous testing to meet the strictest conditions. Delivery of the batteries is scheduled to commence by mid-2024.

Its onboard battery systems allow Battery Tankers to store and transport surplus electricity generated from renewable sources. Decommissioned or idle thermal power plants located near ports can be retrofitted into charge/discharge points for the Battery Tankers, where the power is transmitted to users via grid connections on the land, enabling further effective use of renewable energy.

Moreover, areas with high potential for renewable energy generation are often distant from urban areas and regions with high power demand. Strengthening transmission infrastructure becomes essential in such cases. Given the current energy density of lithium-ion battery cells, the Battery Tanker is an optimal solution for short-distance maritime power transmission from land to land, complementing existing inter-regional grid transmission lines. For instance, in Japan, a Battery Tanker can carry power from regions with high renewable energy supply potential, such as Kyushu and Hokkaido, to high-demand areas of Honshu or for inter-island power transmission.

Battery Tankers will establish new power transmission networks across the sea, promoting renewable energy storage, supply, and utilization. As the energy density of batteries improves and their cost decreases, it is expected that longer-distance maritime transmission from offshore wind power plants to the land will become feasible. Battery Tankers offer a practical solution, especially in Japan, which is prone to earthquakes and has deep-sea surroundings. The ship-based solution resolves issues such as extended downtime from undersea cable malfunctions and repairs and the high costs associated with ultra-high voltage connections and substations. As a result, the Battery Tankers will enable the installation of offshore wind farms in areas where undersea cable deployment was once challenging. Using maritime power transmission via Battery Tankers can address various challenges associated with offshore wind power, not only in Japan but also contribute to the widespread adoption of renewable energy worldwide.

Press Contact: pr@power-x.jp
Media Contact: fendi.chen@power-x.jp
Investor Contact: info@power-x.jp

TOKYO, Aug. 18, 2021 /PRNewswire/ -- Founded with a vision to change how the world consumes and transfers renewable energy, PowerX today announces its business to innovate power storage and transmission by developing a Power Transfer Vessel to carry electricity from offshore wind farms to shore and also by building a large-scale battery packing facility in Japan to produce EV fast-charging, grid, and marine batteries.

• Company Background

The Japanese government targets for renewable energy to generate 36-38% of the country's power production in fiscal 2030, a major upgrade from its previous plan of 22-24%. This will require a boost of offshore wind power from the current 20MW to 10GW by fiscal 2030 and to 30-45GW by fiscal 2040. Japan is surrounded by deep coastal waters, which limit the potential range for setting up offshore wind farms. PowerX was founded with a vision to change how the world consumes and transfers renewable energy by providing a unique solution that can lift the restriction on power generation location, which will allow a greater flexibility for offshore wind farm locations, especially for an island country like Japan. By driving innovation in the way the world storages and transports energy, PowerX aims to enable an unprecedented energy transmission between any two ports on the planet, and thus accelerates the adoption of renewable energy.

Currently, Paolo Cerruti, Co-founder and COO of Northvolt, Caesar Sengupta, ex-VP and General Manager at Google, and Mark Tercek, former CEO at The Nature Conservancy and Former Partner at Goldman Sachs, are the non-executive directors of PowerX.

• PowerX's Vision: Accelerate the adoption of renewable energy with "Power Transfer Vessels"

PowerX will design and build an automated Power Transfer Vessel with a massive battery payload that is integrated with the ship's controls to transport offshore wind power to shore. An undersea power cable typically requires expensive construction that comes with substantial environmental impacts. Comparatively, the Power Transfer Vessel stands out as it is resilient to natural disasters, requires less time and cost for development, leaves minimal impact on the environment, and therefore is able to expand the potential of offshore wind power significantly.

Most of the world's energy is transported by ships, in the form of fuel such as oil, gas, and coal. 84.9% of Japan's power is generated by burning carbon-based fuels imported by ships (*1). As the world shifts away from fossil fuels, the energy ship of the future will carry electricity from clean and renewable sources, replacing the fuel-carrying carbon ships of today.   

(*1) Source: Agency for Natural Resources and Energy (2019)

• Project ARK: Power Transfer Vessels

The very first model of the Power ARK series, "Power ARK 100" is a 100TEU trimaran specially designed for transferring renewable energy in Japan's coastal waters. Upon its completion in 2025, Power ARK 100 will carry 100 grid batteries, hence 200MWh of power (equivalent to the total electricity consumption by 22,000 Japanese households in a day (*2)). The vessel can travel up to 300km when running only on electricity and will be able to unlock long-distance, intercontinental clean power transmission when it is powered by both electricity and sustainable biodiesel fuels.

(*2) Daily power consumption per household in Japan = 10kWh

<Power ARK 100 Specifications>

• Project MAX: In-house Battery Manufacturing

To realize its vision, PowerX will also be building a giga-scale battery assembly facility in Japan to mass-produce batteries for the Power Transfer Vessel. With an acceleration toward decarbonization across the globe, the demand for large energy storage is soaring. Off-the-shelf battery cells will be packaged based on the use case, which includes EV fast-charging, grid, and marine batteries. The factory's annual production capacity will achieve 1GWh by 2024, and will eventually reach 5GWh by 2028. Productions lines will be automated to mass-produce at a low cost.

• Recruitment

PowerX is now looking to hire battery factory managers, ESS product engineers, project managers and more. Learn more about open positions at http://power-x.jp/

• About PowerX

PowerX was founded with a vision to change how the world consumes and transfers renewable energy. To realize that vision, the company will develop a "power transfer ship" to carry electricity from offshore wind farms to shore, and even across the globe. It will also be building a large-scale battery assembly facility in Japan and other technical resources required to realize the vision. The company aspires to drive innovation with the power of technology and to accelerate the global adoption of renewable energy.

• Leadership / Governance

Masahiro Ito / Co-Founder, Representative Director, CEO
Masa is a lifelong entrepreneur. In 2000, he founded Yappa, a software company that pioneered the development of digital visualization technologies. In 2014, Yappa was sold to ZOZO, Japan's leading fashion e-commerce firm. Yappa was renamed as ZOZO Technologies and Masa served as its CEO until 2017, when he became a board member of ZOZO. In 2019, Masa was appointed COO of ZOZO, which is now well-known for his many innovative inventions, including 3D body measuring devices such as ZOZOSUIT, ZOZOMAT, ZOZOSUIT 2, and ZOZOGLASS.

Tadahisa Hardy Kagimoto, MD. / Co-Founder, Chairman of the Board
Dr. Tadahisa "Hardy" Kagimoto, MD, is the Founder, Chairman and CEO of Healios, a biotech company leading the development of stem cell derived regenerative therapies. Prior to that, he founded and ran as President and CEO of Aqumen Biopharmaceuticals. Graduated from Kyushu University School of Medicine, Dr. Kagimoto holds patents in the US, Europe, Japan, and China. He is a board director of Athersys, an American biotech firm, and Mobile Hospital International, a NPO that supports hospital ships for natural disaster recoveries.

Paolo Cerruti / External Director
Paolo is Co-Founder and COO of Northvolt, the first European homegrown Giga-scale battery maker. Northvolt is building 60 GWh of battery cells capacity in Sweden and has to date raised more than 6.5 Bn USD in funding. Prior to Northvolt, Paolo worked as VP of Purchasing and Industrial Strategy for Tesla and was instrumental in the early scale-up of the company and its operations. Paolo started his industrial career at Renault-Nissan where he got the opportunity to live and work in France, Japan, and India.

Caesar Sengupta / External Director
Caesar spent 15 years at Google where he was the GM of Payments and VP leading the Next Billion Users initiative. He led Google Pay and Google Finance and managed all payment systems. He founded the NBU initiative and was responsible for Google's product strategy for high user growth countries. Caesar had also helped start and led Chrome OS. Before joining Google, he held engineering and research positions at Encentuate and Hewlett Packard Labs. He holds 15 patents in Operating Systems design and Expert Finding Systems.

Mark Tercek / External Director
Mark advises business leaders, investors, and NGOs on ambitious environmental strategies. Mark is the former CEO of The Nature Conservancy (2008-2019). Prior to that, he was a managing director and partner at Goldman Sachs for 24 years and was a member of the faculty at New York University Stern School of Business. Mark has been profiled in The New Yorker, Bloomberg BusinessWeek, The Wall Street Journal and more. Mark is also a member of the Williams College Board of Trustees and the Council on Foreign Relations.

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