Top 10 Clean Energy Startup Investors in Japan in July 2025

Last updated: Jul 2025 A list of 10 angel investors and VC (Venture Capital) funds that invest in Clean energy startups based in Japan. We rank investors based on the number of investments they made in Clean energy companies from Japan. We update this investor list every month.

Top 10 Clean Energy Startup Investors in Japan in July 2025

Investor	Clean Energy Japan investments
SBI Investment	2
Mitsubishi UFJ Capital	1
Energy & Environment Investment	1
Global Brain Corporation	1
ReGACY Innovation Group	1
GLOBIS	1
ANRI	1
Tsuneishi Partners	1
Animal Spirits Ltd.	1
Incubate Fund	1

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Investor list

SBI Investment supports the business development and growth of private venture companies through fund investment. It manages and manages venture capital funds under the management philosophy of becoming a leading company responsible for the creation and development of core industries in the 21st century as a "new industry creator".SBIInvestment has invested in a total of 986 companies in the past, of which 169 (17.1% of investment companies) have exited through IPO or M & A.

Investment focus

Information Technology, Software, Financial Services
Series B, Series A, Funding Round
Japan, South Korea, United States

Portfolio highlights

OPTEMO — OPTEMO develops and supplies sales technology that allows businesses and customers to connect through a website.
Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.
Tokyo Artisan Intelligence — Tokyo Artisan Intelligence develops od purely domestic AI high-speed code generation tools as part of deep learning and hardware research. Their objectives are to contribute to the development of new computational technology and its application in society, particularly by providing experts through the training of doctoral students.

Mitsubishi UFJ Capital is a venture capital firm focusing on life science, ICT, and high technology investments.

Investment focus

Information Technology, Software, Health Care
Funding Round, Series A, Series B
Japan, United States, Singapore

Portfolio highlights

LiLz — LiLz is an IT technology network for businesses looking to use AI and IoT to offer new services and value.
EX-Fusion — EX-Fusion develops the first commercial laser based nuclear fusion reactor for power generation.
NABLA Mobility — Solving the complexities involved in the "Operation of Fleets" of Mobility and support its evolution and decarbonization

Energy & Environment Investment, Inc. (EEI) is Japan’s first venture capital specialized in the clean technology sector. With core members who have rich hands on experience in founding and managing venture companies, we aim to provide risk money and various strategic values to promising venture companies and businesses.

Investment focus

Software, Energy, Internet of Things
Funding Round, Series A, Series B
Japan, United States, Germany

Portfolio highlights

Asusola — Asusola engaged in the renewable energy power generation business
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.
NABLA Mobility — Solving the complexities involved in the "Operation of Fleets" of Mobility and support its evolution and decarbonization

Global Brain Corporation is a venture capital firm that invests in companies from seed or early to pre-IPO startups. Global Brain has invested in 300+ startups from seed/early to pre-IPO startups and achieved 25 IPOs and 61 M&As as a result of providing hands-on support services and resources to its portfolio startups. Global Brain hasmanaged a pure investment fund as well as multiple corporate venture capital funds partnered together with tier 1 public companies of telecom, real estate development, financial service, beverages, agriculture food, logistics, and electronic devices.

Investment focus

Information Technology, Software, Artificial Intelligence
Series A, Series B, Funding Round
Japan, United States, United Kingdom

Portfolio highlights

Wiom — Provides affordable and unlimited Internet to Middle and lower middle income households
HIVED — Looking for a greener, cheaper and better way to send your parcels? All parcels tracked and insured. Same-day, next-day and other options. Contact us today.
Things — Things offer product development and various information such as CAD, drawings, parts configuration, and price information.

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.

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.

ANRI is a Japanese venture capital firm that mainly invests in seed and early-stage startups.

Investment focus

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

Portfolio highlights

AiCAN — AiCAN provides system planning and development, data analysis, IT, and consulting services related to child welfare.
Asusola — Asusola engaged in the renewable energy power generation business
Linea Innovations — Linea Innovations is an energy production company that develops commercial fusion reactors with advanced fuel technology.

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.

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.

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.