Energy transport across oceans
Using the ocean for vast energy transmission lines
Newsroom
Turning oceans
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
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Our vision
Our vision
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Battery Tanker
Two vessel types
Connecting the Ocean Power Grid are two types of Battery Tankers, built with the same storage battery system.
Battery Tanker
Power Ark
Fit for all sea routes
Battery Tanker
Power Barge
For shorter, calmer sea routes
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.
Potential for overseas expansion
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.
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.
Power Ark
First vessel: Power Ark 100 ”X”
Set to sail in 2027
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
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)
Board of Directors
President & Representative Director
Hideyuki Onishi
from 2021, After graduated in 1988 with a master’s degree from the Solar Energy Chemistry Research Center, Osaka University, Hideyuki held key roles in global marketing and business management at a multinational chemical company. He became Japan President of GE Energy in 2010, contributing to emergency power efforts after the 2011 earthquake. Starting in 2016, he led the launch of onshore wind power in Japan and offshore wind power from 2021. He become President of Ocean Power Grid in January 2025.
Chairman & 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.
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.
Non-Excective Director
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.
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. Currently serves as Director, Senior Executive Officer, and Head of China Operations.
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.