海上パワーグリッド

Energy transport across oceans

Using the ocean for vast energy transmission lines

Ocean Power Grid builds infrastructure for advanced marine transmission technologies and more efficient global energy supplies.

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Covering roughly 70% of the Earth's surface, oceans are rich in wind, tidal, and wave energy. Yet, their remoteness from land makes it difficult to utilize to their fullest potential. Ocean Power Grid is pioneering a new method of power transmission by ship, to accelerate the widespread adoption of renewable energy across the world.

Company Launch Announcement

Company Launch Announcement

Company Launch Announcement

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Our vision

Our vision

Our vision

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Battery Tanker

Connecting the Ocean Power Grid are two types of Battery Tankers, built with the same storage battery system.

Battery Tanker

Battery Tanker

Unlocking the potential of marine energy transmission

Battery Tankers transport renewable energy in a variety of ways, including transmission from offshore wind farms, grid supplementation, and supplying remote island power systems.

Power Ark Navigation Area
Depth ~2,000m

Power Barge Navigation Area
Significant wave height ~1mPower Ark use case - Offshore wind farms in Hokkaido

Tomakomai Port
Muroran Port
Floating offshore wind farmPower Ark use case - Hokkaido to HonshuPower Ark use case - Offshore wind farms in the Kanto Region

Yokohama Port
Floating offshore wind farmPower Ark use case - Offshore wind farms in the Tokai Region

Floating offshore wind farmPower Barge use case - Kyushu to the Chugoku RegionPower Ark use case - Remote islands of Kyushu

Potential for overseas expansion

Power Ark use case
IndonesiaPower Barge use case
Singapore
Power Barge use case
Hawaii, USA


Repurposing decommissioned thermal power plants as charging points

By 2060, over 1,000 thermal power plants worldwide are expected to be decommissioned. By repurposing these existing builds for charging and discharging ports for Battery Tankers, we hope to significantly reduce waste and installation costs.

火力発電所アートボード 1

Repurposing decommissioned thermal power plants as charging points

By 2060, over 1,000 thermal power plants worldwide are expected to be decommissioned. By repurposing these existing builds for charging and discharging ports for Battery Tankers, we hope to significantly reduce waste and installation costs.

火力発電所アートボード 2

Power Ark

First vessel: Power Ark 100 ”X”

Set to sail in 2026

Power Ark 100Power Ark 100Power Ark 100Power Ark 100Power Ark 100

Specifications

Power Ark

Power Ark 100 "X"


Length (Overall)

approx. 147.0 m


Breadth

19.0 m


Draft

5.5 m


Gross Tonnage

approx. 9,200 MT


Endurance

300 km


Service Speed

10 knot (normal), 14 knot (max)


Charge and Discharge Time

each 3 hour


Classification Society

Class NK


Flag

Japan


Battery System


Type

20-foot containerized Battery (LFP)


Quantity

96 TEU


Total Capacity

240 MWh


Ingress Protection

IP56 (IEC standard)


Type Approval

DNV, Class NK


Power Barge

Specifications

Power Barge

Power Barge 100


Length (Overall)

approx. 81.0 m


Breadth

approx. 30.0 m


Deadweight

approx. 6,000 ton


Service Speed

5-8 knot


Battery System


Type

20-foot containerized Battery (LFP)


Quantity

96 TEU


Total Capacity

240 MWh


Ingress Protection

IP56 (IEC standard)


⁨Type Approval

DNV, Class NK


Company Information


Company Name

Ocean Power Grid, Inc.


Founding Date

February 9, 2024


Location

Midtown Tower 43rd Floor, 9-7-1 Akasaka, Minato-ku, Tokyo


Businesses

Development and sales of Battery Tankers

Marine power transmission and electricity sales using Battery Tankers

Sales of marine batteries


Capital

10 million yen (including capital reserve) *Ocean Power Grid is currently a 100% subsidiary of PowerX, Inc.



Board of Directors

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Representative Director

Masahiro Ito

Masa launched his first company Yappa at just 17 years old. In 2014, Masa joined ZOZO Group through M&A and served as the CEO of ZOZO Technologies. Later, Masa was appointed as the Board member and COO of ZOZO, which is now well-known for his many innovative inventions, including 3D body measuring devices such as ZOZOSUIT and ZOZOMAT.

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Director

Naoki Sato

Naoki led corporate and business planning at Yaskawa Electric, spearheading environmental energy projects like offshore wind power and marine vessels, and executed multiple M&A deals. Later, he served as VP of Strategy and Director at a European global company. Naoki holds an MBA from the University of Bradford (PgDip) and is certified as a Second-Class Chief Electrical Engineer.

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Power Business Executive Officer

Yusuke Kojima

After earning his master's in engineering from the University of Tokyo in 2008, Yusuke worked at a major electrical manufacturer and a foreign consulting firm. In 2014, he joined a leading new power company as Head of Retail Electricity, growing the business to over 50 billion yen. Yusuke became independent in 2023, providing management support in the energy sector. He also serves as a representative director of the Renewable Energy Promotion New Power Association and as an academic specialist at the University of Tokyo.

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Outside Director

Shuji Murakami

Shuji joined Yaskawa Electric Manufacturing Co., Ltd. (now Yaskawa Electric Corp.) in 1982. He has held key roles since 2008, including Director and Head of the Corporate Planning Office, Director and Senior Executive Officer, and Head of the Corporate Planning Department. In 2016, he became Representative Director and Senior Executive Officer of the Corporate Planning Department, and in 2017, he was appointed Head of the Corporate Planning Division. Since 2020, he has also managed CSR and overall company management, serving as Representative Director and Senior Executive Officer, overseeing Corporate Planning, Management, and CSR.

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Auditor

Toshiyuki Fujita

Toshi led RareJob as its Director and CFO in 2012 and was appointed as the Executive VP in 2015. Prior to that, Toshi worked for KPMG, where he engaged in M&A and corporate reinvigoration. He also has experience taking an IT start-up public on TSE Mothers as its Director and CFO after working for Deloitte Touche Tohmatsu.