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Top 15 CleanTech Startup Investors in Japan in May 2025

Last updated: May 2025 A list of 15 angel investors and VC (Venture Capital) funds that invest in Cleantech startups based in Japan. We rank investors based on the number of investments they made in Cleantech companies from Japan. We update this investor list every month.

Top 15 CleanTech Startup Investors in Japan in May 2025

Investor	CleanTech Japan investments
Mitsubishi HC Capital	2
Osaka Gas	1
Mirai Creation Fund	1
Hamamatsu Ventures	1
PE&HR	1
Incubate Fund	1
GLOBIS	1
Tsuneishi Partners	1
Beenos Partners	1
Animal Spirits Ltd.	1
MITSUI SUMITOMO INSURANCE Venture Capital (MSIVC)	1
Taizo Son	1
Mistletoe	1
Toppan Printing	1
ReGACY Innovation Group	1

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Investor list

Mitsubishi UFJ Lease & Finance prove worthy of the trust of customers, shareholders and employees as contribute to realize a more prosperous society.

Investment focus

Energy, Medical, Internet
Seed, Series B, Debt Financing
Japan, United States, India

Portfolio highlights

PXP — PXP is a green tech development firm that develops clean energy using next-generation photoelectric conversion elements.
SPACECOOL — Spacecool offers zero-energy cooling materials that radiate heat to space, reducing temperatures and mitigating global warming.
Clean Energy Connect — Clean Energy Connect is into offering green energy solutions. It invests in its own generation capacity for a stable electricity supply by not harming nature.

Osaka Gas produces, supplies, and sells domestic energy, city gas, sales of gas equipment, and gas piping construction. They offer fine materials and carbon material products for kitchen machines, air conditioners, cogeneration, gas heat pumps, natural chillers, boilers, commercial gas water heaters, and industrial furnaces and burners.

Investment focus

Automotive, Energy, Information Technology
Funding Round, Series C, Series B
Japan, United States, The Netherlands

Portfolio highlights

Koloma — Koloma is a geologic hydrogen company that leverages its technology, proprietary data, and human capital advantages to identify and commercialize geologic hydrogen resources. The company creates and commercializes data-driven approaches to energy transition resource development solutions that help reduce global carbon emissions, allowing businessesto lower their carbon footprint and combat climate change.
Enechain — enechain provides liquidity in Japan’s energy market by brokering OTC transactions of energy.
SPACECOOL — Spacecool offers zero-energy cooling materials that radiate heat to space, reducing temperatures and mitigating global warming.

The Mirai Creation Fund invests in companies and projects that use the latest technologies and business models, supporting the growth of value in these companies and projects, wherever they are found around the world.

Investment focus

Robotics, Information Technology, Software
Series B, Funding Round, Series A
Japan, United States, Israel

Portfolio highlights

MUSVI — MUSVI is an informartion technology company that provides spatial connectivity solutions, and community platform services.
SPACECOOL — Spacecool offers zero-energy cooling materials that radiate heat to space, reducing temperatures and mitigating global warming.
Aeterlink — Aeterlink is a wireless device maker and developer. They applied their technology to fields such as FA, robots, smart houses, and medicine and developed practical level technologies such as elemental technology that can wirelessly supply power.

Hamamatsu Photonics Corporate Venture Capital provides capital and make global technical and business resources available to help start-ups.

Investment focus

Electronics
Convertible Note
United States

Portfolio highlights

BEAM Technologies — BEAM Technologies, focuses on developing optical semiconductor devices using special light to offer clean solutions to ecosystem-related problems.
NLM Photonics — Data centers consume enormous amounts of power; our faster, energy-efficient electro-optic modulation solution moves data across the internet.

PE&HR is a private equity and venture capital firm that seeks to invest in incubation, start-up, and early-stage companies. PE&HR primarily invests in the human resources, internet, healthcare, IT, mobile, and social commerce-related industries.

Investment focus

Software, Fashion, Education
Seed, Funding Round, Series A
Japan

Portfolio highlights

Meme — MEME is a money app for parents and children to make money more familiar and simplifies the flow of money.
VIE STYLE — VIE STYLE offers wearable music device and AI technology services.
BEAM Technologies — BEAM Technologies, focuses on developing optical semiconductor devices using special light to offer clean solutions to ecosystem-related problems.

Incubate Fund is an independent early-stage venture capital that specializes in providing capital to technology startups at the seed stage. The firm built a portfolio of over 300 companies in Asia, taking 12 companies to public and 20 companies to M&A exit since 2010.

Investment focus

Software, Information Technology, E-Commerce
Seed, Funding Round, Series A
Japan, United States, India

Portfolio highlights

Gatebox — It is a research laboratory beyond dimension" which is researching and developing to realize "a world where you can live with a character". Therefore, Gatebox Co., Ltd. refers to itself as "Gatebox Lab" and conducts research and development beyond dimension in the area of Akihabara day and night. Dreaming that day,coming to meet beyond dimension.
NABLA Mobility — Solving the complexities involved in the "Operation of Fleets" of Mobility and support its evolution and decarbonization
Mjolnir Spaceworks — Mjolnir Spaceworks desings and manufactures state-of-the-art novel space rockets with efficient engines as well as other space equipments.

In 1992, GLOBIS started out with one marketing course in a small, rented classroom in the Shibuya district of Tokyo. Since then, the management environment surrounding Japanese companies has reached an unparalleled turning point requiring dynamic change and creativity. The history of GLOBIS is the continual pursuit of creative change and innovationdrawing upon our own experience in starting and growing businesses. In "People" infrastructures, we have turned out a large number of business leaders and supported corporate clients in enhancing their management capabilities. In "Capital," we have supported the creative efforts of venture businesses, and in "Knowledge," we have published numerous books on management. With each new day, GLOBIS takes another step toward becoming the No. 1 business school in Asia as well as Asia's No. 1 venture capital firm. Yoshito Hori Chairman and CEO of GLOBIS Corporation

Investment focus

Manufacturing, Pet, Sustainability
Seed, Series B, Funding Round
Japan, United States

Portfolio highlights

Anipos — Anipos is an application that allows you to easily claim pet insurance.
HANOWA — HANAWA is a matching platform between freelance dental hygienists and dental clinics.
Blossom Energy — Developed advanced nuclear reactors that are able to produce clean energy, Blossom Energy manufactures nuclear reactors for the nuclear energy industry. The focus of the company is on providing affordable, stable, and sustainable energy for the world. The company utilizes HTGR, which is a fourth-generation nuclear reactor.

Tsuneishi Partners provides services and products in shipbuilding, shipping, environmental, energy, and services. With regard to product development, the company has a lineup of container carriers and tankers centered on bulk cargo ships to meet the needs of various markets. It was established in 1917 and is based in Hiroshima, Japan.

Investment focus

Apps, SNS, Translation Service
Seed, Series A
Japan

Portfolio highlights

JaQool, Inc. — JaQool is a company that will leverage social innovation and new technologies to create convenient services that are something to get excited about. Three entrepreneurs from different backgrounds have gathered together to utilise these new technologies and techniques to develop services that can help to make the world a better place.JaQool willinitially work on a mobile translation service for tourists coming to Japan from overseas. The number of tourists from overseas has been increasing rapidly in recent years, but many have encountered difficulties due to being unable to understand Japanese. Removing the language barrier is a pressing challenge that needs to be addressed, particularly in preparation for the Tokyo Olympics that will be held in 2020. JaQool can help contribute towards a solution.
Kotozna — Kotozna is an IT service company that aims to solve the social problem of "language cave" using cutting-edge technologies such as AI and machine translation. Multilingual translation services such as "Kotozna Chat", which provides messaging with simultaneous translation between different SNS platforms, and "KotoznaCamera", which translates Japanese content such as restaurant menus and displays them by QR code scanning.
Blossom Energy — Developed advanced nuclear reactors that are able to produce clean energy, Blossom Energy manufactures nuclear reactors for the nuclear energy industry. The focus of the company is on providing affordable, stable, and sustainable energy for the world. The company utilizes HTGR, which is a fourth-generation nuclear reactor.

Beenos is a platform for startups. Our in-house team of entrepreneurs-in-residence and specialists help you get your ideas off the ground. We’re (the) experts in engineering, design, data science, and business management. We know how to launch a company in this ever changing IT industry, and we’d like to help establish and expand your present andfuture business.The company was founded in 1999 as NetPrice.com, a provider of eCommerce services. NetPrice.com established Beenos as an incubation program before

Investment focus

E-Commerce, Internet, Mobile
Seed, Series A, Series B
Japan, United States, India

Portfolio highlights

Raena — RAENA adalah platform reseller kecantikan terbesar di Indonesia yang memberikan peluang bisnis rumahan yang menjanjikan. Dropshipper & Reseller produk kecantikan
Ralali — Ralali.com, Pusat toko grosir online pertama di Indonesia, sebagai b2b wholesale marketplace platform yang menghubungkan supplier, distributor dengan retail.
Delivered Korea — Delivered Korea is an e-commerce platform, that accelerates cross-border e-commerce from South Korea to your country.

Animal Spirits is an investment firm that raises funds for seed and early-stage startups and provides relevant advisory services.

Investment focus

B2B, Legal, Farming
Seed, Series A, Funding Round
Japan

Portfolio highlights

Rakubil — Rakubil is a software development firm that develops applications and platforms for the commercial real estate sectors.
Mign — Mign offers a generative AI-related SaaS solutions for the construction and real estate fields.
Unito — Unito offers people a friction-free lifestyle by pursuing optimization of living.

MSIVC is a venture capital firm that invests in Japanese and global startups scaling to IPO. It focuses on startups in verticals of Fintech, SaaS, Healthcare, AI, E-Commerce, Foodtech, and Environment etc.

Investment focus

Software, Information Technology, Health Care
Funding Round, Seed, Series A
Japan, United States, India

Portfolio highlights

Gatebox — It is a research laboratory beyond dimension" which is researching and developing to realize "a world where you can live with a character". Therefore, Gatebox Co., Ltd. refers to itself as "Gatebox Lab" and conducts research and development beyond dimension in the area of Akihabara day and night. Dreaming that day,coming to meet beyond dimension.
Tech Doctor — Tech Doctor is a health monitoring service which provides analysis and insights for self care reducing the need for health care workers.
Gaudi Clinical — Gaudi Clinical is a health care firm that engages in regenerative medicine outsourcing and cell processing contract establishments.

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

LIFT99 — LIFT99 is a coworking hub and network of startup founders in Tallinn, Estonia, and Kyiv, Ukraine. In 2018, we launched our Skillsharing Platform for founders around the world.
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.

Mistletoe is a hub for startups and the overall entrepreneurial ecosystem. It specifically provides learning opportunities for entrepreneurs, facilitates startup communities, invests in and supports startup companies and venture capitals.

Investment focus

Information Technology, Software, Mobile
Seed, Funding Round, Series A
Japan, United States, India

Portfolio highlights

ULUU — ULUU is an ocean material that replaces plastic and actively benefits the world.
Aquaria — Discover how you can secure access to safe, clean water from air using Aquaria's atmospheric water generators.
Funderbeam — Funderbeam is a funding and trading platform that connects companies and investors to buy and sell equity stakes. The platform allows the founders to gain exposure, legal support, a funding manager, or an investor network. It also allows the investors to take control of their investments and trade anytime they want.The company was founded in 2013as a global data platform for startup companies.

Toppan Printing Co., Ltd. provides commercial printing and related services worldwide. It operates in three segments: Information & Networks, Living Environment, and Electronics. The Information & Networks segment provides commercial printing services for posters, catalogs, pamphlets, flyers, calendars, pop materials, and gifts, as well asoffers design and event services, sales promotion planning, multimedia related activities, and database and network system design and operation services; and publications printing services magazines and books, as well as CDROMs, DVDs, and other electronic publications. It also offers securities, such as stocks, bonds, gift certificates, and product coupons; cards comprising magnetic cards and prepaid cards; and develops and designs IC card systems, IC tag systems, and security management systems. This segment supplies various business form services, including direct mail, integrated slips, data print services, cards, envelopes, catalogs, and sales and maintenance of equipment. The Living Environment segment offers a range of packaging services, such as packaging planning, development, and production; development and production of packaging materials; design and production of packaging related system equipment; filling services; and packaging consulting. It also provides decorative paper/film, wallpaper, flooring materials, interior materials, and exterior materials. The Electronics segment offers display products that include color filters for LCDs, shadowmasks, screens for micro-display rear projection TVs, and functional films; and semiconductor products comprising photomasks, leadframes, printed wiring boards, substrates for semiconductor packages, design of printed wiring boards, LSI circuits, printed wiring, and performance assessment software. The company has a strategic alliance with AU Optronics Corp. Toppan Printing was founded in 1900 and is headquartered in Tokyo, Japan.

Investment focus

Information Technology, Financial Services, Software
Funding Round, Corporate Round, Series B
Japan, United States, India

Portfolio highlights

nat — nat develops iOS application - Scanat and provides consultation service in data strategy.
THE PHAGE — The phage is a medical device company that focuses on developing AI technology to predict postprandial blood glucose levels.
Industrial-X — INDUSTRIAL-X provides business consulting, structure transformation support, DX human resource development, solution procurement support, and BPO solutions. Their customers inquiries are addressed through online applications.

ReGACY Innovation Group offers complete co-creation support, from discovery to commercialization and monetization.

Investment focus

Nuclear, CleanTech, Clean Energy
Seed
Japan

Portfolio highlights

Blossom Energy — Developed advanced nuclear reactors that are able to produce clean energy, Blossom Energy manufactures nuclear reactors for the nuclear energy industry. The focus of the company is on providing affordable, stable, and sustainable energy for the world. The company utilizes HTGR, which is a fourth-generation nuclear reactor.

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