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Top 20 Energy Angel Investors in Japan in January 2026

Last updated: Jan 2026 A list of 20 angel investors that invest in Energy startups based in Japan. We rank investors based on the number of investments they made in Energy companies from Japan. We update this investor list every month.

Top 20 Energy Angel Investors in Japan in January 2026

Investor	Energy Japan investments
Aso Kaname	1
Shinji Senba	1
Yagi Toshiyuki	1
Tetsuya Nagashima	1
Takuma Iwasa	1
Mr Maru	1
Ogawa Ryo	1
Shunsuke Masaki	1
Katsunori Sago	1
Taizo Son	1
Naoki Aoyagi	1
Yusaku Maezawa	1
Matsuoka Tsuyoshi	1
Makoto Takano	1
Cheng Tao	1
Sotaro Karasawa	1
Toyokazu Ichise	1
Yoshinori Fukushima	1
Suzuki Tatsuya	1
Seio Nagami	1

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Investor list

Aso Kaname

Investment focus

Organic, Residential, Waste Management
Seed
Japan

Portfolio highlights

AlgaleX — AlgaleX is a firm that utilizes discarded food waste to create ingredients such as plant-based proteins.

Shinji Senba is a Director of Green Innovations Holdings.

Investment focus

Social, E-Commerce, Sustainability
Seed
Japan

Portfolio highlights

Gab — Gab is a company that works to solve social problems as well as develops and markets ethical products.

Yagi Toshiyuki is the Representative Director of Power Next Inc.

Investment focus

Energy, Outsourcing, Electrical Distribution
Seed
Japan

Portfolio highlights

POWERNEXT — POWERNEXT provides electric power supply & demand management, rate calculation, customer management & environmental value trading services.

Tetsuya Nagashima - Director COO @ Gunosy

Investment focus

Social, E-Commerce, Sustainability
Seed
Japan

Portfolio highlights

Gab — Gab is a company that works to solve social problems as well as develops and markets ethical products.

Takuma Iwasa is a Founder & CEO at Cerevo.

Investment focus

Water, Beauty, IT Management
Seed
Japan

Portfolio highlights

RABO — RABO is a Cat-Tech Company that "watches cat life with technology.
nanoFreaks — nanoFreaks builds a rescue system on the sea, creating an environment where everyone can live with peace of mind.

Mr. Maru

Investment focus

Organic, Residential, Waste Management
Seed
Japan

Portfolio highlights

AlgaleX — AlgaleX is a firm that utilizes discarded food waste to create ingredients such as plant-based proteins.

Ogawa Ryo - CEO @ Timee

Investment focus

Apps, Social, Finance
Seed
Japan

Portfolio highlights

LivCo — LivCo is a support service company that offers HR, life support, real estate rental brokerage, and media platform solutions for foreigners.
Gab — Gab is a company that works to solve social problems as well as develops and markets ethical products.
Givearth — Givearth app enable users to make donations just by carrying out their daily shopping and consumption activities.

Mr. Masaki joined Mitsui Ventures in May 2008 as Venture Partner, and since has been focused on investments in retail and service sector. Previously, he worked at Fujita Corporation, a large operator of restaurants and retail chain, where he was responsible for store development and merchandising in Tokyo area. After several successfulyears at Fujita, he took a position with Service Business Division of Mitsui & Co., Ltd., in charge of developing new business utilizing the franchise method.

Investment focus

Social, E-Commerce, Sustainability
Seed
Japan

Portfolio highlights

Gab — Gab is a company that works to solve social problems as well as develops and markets ethical products.

Katsunori Sago

Investment focus

Sustainability, Robotics, Aerospace
Seed, Series C
Japan, Hong Kong

Portfolio highlights

Kollektion — KLKTN is a curated music, manga and art NFT platform connecting creators with fans through special experiences. The platform allows fans to access special edition digital art and behind-the-scenes moments of artists' creative process. In collaboration with top creators and artists and powered by blockchain technology, KLKTN is takingartist-fan engagement and the best of creative experiential culture into the digital world. Artworks are available as a limited supply of authenticated digital products or NFTs, for purchase via credit card, with a fixed cost per item. KLKTN's co-founders are Jeff Miyahara, Chief Creative Officer and a renowned record producer and songwriter who has produced over 260 international artists; Fabiano Soriani, Chief Technology Officer and former lead blockchain engineer for Dapper Labs; and Daisuke Iwase, Chief Executive Officer, Harvard Business School graduate, former World Economic Forum Young Global Leader, and a digital pioneer known for co-founding Lifenet, a disruptive fintech venture, which he took to IPO. Built on the Flow blockchain to achieve affordable and environmentally-sustainable minting, KLKTN leaves more for artists, fans, and the planet.
Sustech — Sustech is a technology company that develops platforms for decarbonization support and distributed power generation services.
Ispace Technologies — ispace is a private lunar robotic exploration company that is developing micro-robotic technology to provide a low-cost and frequent transportation service to and on the Moon, conduct lunar surface exploration to map, process and deliver resources to our customers in cislunar space.

Taizo Son is the Co-Founder of VIVITA. Taizo Son attended the University of Tokyo.

Investment focus

Financial Services, Information Technology, Water
Seed, Series A, Funding Round
Japan, United States, Singapore

Portfolio highlights

Favolist5 — Favolist5 is a software company that develops an abbreviated voice SNS based on web3 for personal media.
Smartround — Smartround is a specialized finance management platform for startups and their investors. For start-ups, for entrepreneurs who are not familiar with finance, simply enter the necessary information according to the guide, prepare appropriate financing round, and prepare a function that can simulate and execute a capital increase. Support informationsharing and communication with shareholders even after the capital increase.
AnotherBall — AnotherBall is a blockchain startup that combines entertainment and blockchain.

Naoki Aoyagi is a Senior Vice President at GREE, Inc. and Chief Executive Officer of GREE International, Inc. He joined GREE, Inc. in March 2006 from Deutsche Bank, where he had specialized in tech and media sector IPOs and M&A advisory work. At GREE, Aoyagi oversaw the Company's partnership with KDDI and its IPO before leading thedevelopment of GREE’s global operations, a role he continues today. Aoyagi earned a bachelor's degree in policy management from Keio University in 2002.

Investment focus

Internet, Fashion, Software
Seed, Angel, Series A
Japan

Portfolio highlights

Enechain — enechain provides liquidity in Japan’s energy market by brokering OTC transactions of energy.
Parallel — Parallel is the hangout app where you can enjoy games, videos, music, and more with friends.
Holmes — Holmesis a cloud contract system to consistently carry out the creation, conclusion and management of contracts in the cloud.

Yusaku Maezawa is a Founder of Zozotown.

Investment focus

Gaming, Developer Tools, Artificial Intelligence
Seed, Series C
Japan, United States

Portfolio highlights

JOYCLE — JOYCLE is a waste management company that specializes in trash recycling, disposal, and environmental consulting services.
space data — Space Data is based on an algorithm that allows the AI to recognize geospatial data from the Earth and easily assign another Earth in VR. The company is developing an algorithm to automatically generate another "Earth" in virtual space using 3DCG technology by making the AI understand the geospatial information of the Earth by learningthe vast amount of ground observation data available from satellites. They want to create an AI that can reconstruct the "world" in virtual space by learning all kinds of data from this world, such as traffic volume, pedestrian traffic, day and night, four seasons, temperature, plant distribution, and nighttime light intensity. Its goal is to build a future in which everyone has the ability to create their own world (universe) and shape their own destiny without regard for race, gender, appearance, or environment.
Space Aviation — Space Aviation is an aerospace company that offers air taxi services, flight training, aircraft sales, and heliport development solutions.

Matsuoka Tsuyoshi - Executive Officer @ Goodpatch

Investment focus

Water, Banking, Analytics
Seed, Funding Round
Japan, Singapore

Portfolio highlights

Umitron — Umitron is a data company for aquaculture. We support fish farmers to increase productivity through data analytics. One of the biggest challenges in aquaculture is increasing feeding cost. We optimize feed amount and timing by using fish behavior analytics and water quality data. Our goal is to "install Sustainable Aquaculture on Earth".
nanoFreaks — nanoFreaks builds a rescue system on the sea, creating an environment where everyone can live with peace of mind.
Bankers Holding — Bankers Holding controls the bankers group companies that provide financial services via internet.

Makoto Takano is CEO of atomixmedia, inc., publisher and editor-in-chief of Forbes Japan and Rolling Stone Japan since June, 2014. Prior to joining Atomixmedia, Inc., he was Managing Director and President of PIMCO Japan Ltd. Before joining PIMCO in 2001, he was head of marketing at Goldman Sachs Asset Management. Makoto's prior experiencealso includes work at Daiwa Securities where he was head of the strategists team at Daiwa Institute of Research. He has published extensively on the capital markets. In 1992, he was awarded Securities Analysts Journal Prize by the Securities Analyst Association of Japan. He has also given lectures on asset management at Waseda University and Kyoto University. He holds master’s and undergraduate degrees in engineering from Waseda University. Makoto serves as Director of Nippon Finance Association and Rebuild Japan Initiative Foundation.

Investment focus

Content, Sports, Apps
Seed, Series A, Series B
Japan, Philippines

Portfolio highlights

BeatFit — BeatFit is a fitness-tech startup based in Japan.
PROGRIT — PROGRIT is an English-related media management company.
Luup — Luup is an Internet Company.

Tao Cheng currently works as Chief Executive Officer and Founder of popIn.

Investment focus

Telecommunications, Content, Internet
Seed, Angel, Series A
Japan

Portfolio highlights

Tokyo — Tokyo provides consistently-designed signage and projector installation, as well as maintenance company support. All customers need is “product selection” considering installation. This is a service that does not take time and effort!
Aidemy — Aidemy is a web service where you can learn AI programming online.
Girasol Energy — Girasol Energy is an IoT Platform provides innovative PLC technologies that enable wiser PV Plants.

Sotaro Karasawa - Chief Technology Officer @ STAR FESTIVAL

Investment focus

Software, Blockchain, Art
Seed, Pre-Seed, Series B
Japan

Portfolio highlights

Taian — Taian, which specializes in bridal industry services and software. They also provide ''Concept Marry,'' which allows couples to design invites and seating charts that match their wedding theme, as well as display guest information on Oiwaii.
Atmoph — A smart digital window that opens to beautiful scenery from around the world. By simply putting it on your desk or hanging it on the wall, Atmoph Window will open up a whole new world before you.
Cloudbase — Cloudbase is an information technology company that specializes in the fields of cloud services and management.

Toyokazu Ichise is a Director of Peace Communication Foundation.

Investment focus

Social, E-Commerce, Sustainability
Seed
Japan

Portfolio highlights

Gab — Gab is a company that works to solve social problems as well as develops and markets ethical products.

Yoshinori Fukushima - CEO @ LayerX

Investment focus

Internet, Marketing, Media and Entertainment
Seed, Angel, Series A
Japan, Singapore

Portfolio highlights

Now Do — Now Do provides online growth revolution platform.
Amptalk — Amptalk is a software development firm specializing in operating automatic transcription and analysis of online business negotiations.
PeopleX — PeopleX encourages and assists employees in their professional development.

1985. Graduated from the Faculty of Economics, Hitotsubashi University. In 2008, he engaged in new business support and venture support for large companies at Inspire Co., Ltd. In 2011, he was appointed director of UXConsulting company wacul. In 2012, he was appointed director of giftee.

Investment focus

Internet, Agriculture, Information Technology
Seed, Funding Round, Angel
Japan

Portfolio highlights

Pleap — Pleap is a medical engineering company specializing in the development of AI and IoT-based technology solutions tailored for medical institutions. The company's product offerings include "medimo" which is an AI tool that automatically creates medical record manuscripts from medical audio.
AGRI SMILE — AGRI SMILE is a platform that focuses on sharing agricultural technology.
Conoris Technologies — Conoris Technologies is a staffing agency that offers security check support services for companies.

Seio Nagami

Investment focus

Task Management, SaaS, Information Technology
Seed, Series A, Angel
Japan

Portfolio highlights

Enechain — enechain provides liquidity in Japan’s energy market by brokering OTC transactions of energy.
Stock — Stock develops products that relieve the stress of sharing information from teams around the world.
OVERFLOW — OVERFLOW provides consulting and recruitment services.

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