Top 15 Clean Energy Startup Investors in Japan in May 2026

Portfolio highlights

• Fivot — Fivot is a financial company that provides venture capital, financing, credit, money lending, and prepaid payment services.
• MODE — With offices in both San Mateo, California, and Tokyo, Japan. The company is rapidly growing with now over fifty employees and is in business to provide end-to-end semi-custom IoT and AI solutions for organizations to improve their operations by connecting them to their data, giving them “real-time” insights, so they can turn innovative ideas intosustainable solutions that address a wide range of challenges.Simple, yet powerful, our latest "next generation" BizStack IoT and BizStack AI solutions are comprised of a continuous improvement technology stack that collects real-time data from any sensor, device, product, equipment, or legacy system. The data is then sanitized, uniquely structured, and provided to highly customizable, intuitive dashboards with powerful insights, along with proper security in the cloud for ongoing IoT and AI applications.BizStack can be deployed 4X faster and 75% less expensively than in-house developers or outside consultants.
• OPTEMO — OPTEMO develops and supplies sales technology that allows businesses and customers to connect through a website.

Portfolio highlights

• Morus — Morus is a university-based biotech startup developing functional food ingredients from silkworms to address global health and nutrition challenges.
• FunPep — FunPep is an Industry-university collaboration bioventure company.
• AI Silk — AI Silk are innovative conductive fibers produced with a dyeing technique. By using natural silk and giving conductivity to the fiber itself, They have succeeded in producing electrodes that reduce some of the risks and challenges of conventional medical electrodes, which can cause discomfort,skin and in vivo inflammation, and measurement failuredue to sweat or other elements. Their brand, AI Silk, is a new material that has strong and diverse application potential, even beyond the health / medical field.

Portfolio highlights

• Space quarters — Space Quarters is a manufacturing company that produces payload deploy and panels, and develops space assembly robotic systems.
• Surv Biopharma — Surv Biopharma develops a drug discovery platform that facilitates research and development of veterinary drugs and pharmaceutical products.
• Metagen Therapeutics — Metagen Therapeutics is a Drug discovery and medical business company which utilizes microbiome science.

Portfolio highlights

• Opt Fit — Opt Fit is a fitness industry that provides fitness, wellness and health-care services.
• Things — Things offer product development and various information such as CAD, drawings, parts configuration, and price information.
• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.

Portfolio highlights

• Alpaca — Alpaca API allows developers and businesses to build apps, embed investing, and trade algorithms
• Turing — Turing develops and manufactures fully autonomous vehicles.
• Reiwa Travel — Reiwa Trave is a digital travel agency intended that optimizes overseas travel. The company's platform uses online travel booking tools that provide digitalized contracts along with trip management, thereby enabling its customers' vacation and leisure experiences.

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.

Portfolio highlights

• Superworm — Superworm is a producer of environmentally friendly and long-term solutions to societal challenges. The company undertakes genome editing research and sells protein powders, biofuels, and organic fertilizers made from superworms, allowing customers to consume insect-derived proteins and biofuels.
• Japan Agriculture — Exportation of Japanese agricultural products is currently small in volume. While Japanese farmers aspire to export their products to foreign countries for more people to enjoy and local consumers universally share the positive perception of the quality of Japanese agricultural products, issues such as price, communication, and logistics hinder theexpansion of exportation.They aim to solve these issues and satisfy the needs of both Japanese farmers and global consumers which are so clearly evident but devastatingly unmet.
• Bluefield Energy — Bluefield Energy redefines Japan's electricity sector through technology-driven renewable energy solutions. Its mission centers on liberating people and society from energy constraints by tackling high costs, environmental impact, and supply instability.

Portfolio highlights

• Helpfeel — Our vision is to make saving, sharing, and exploring ideas as natural as breathing. On this journey we're humbled to be helping millions around the world from solo makers to university research labs, from gamers to pro designers, and large to small teams like ours.
• Asuene — Asuene involves in clean power retail business, retail SaaS business, etc.
• Cognigy — Automate customer and employee services through Conversational AI implementation across any organization with Cognigy. Book demo or try free now!

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.
• Tacoms — CAMEL is a service that allows you to easily manage orders from multiple food delivery / takeout services on a single tablet.
• Linea Innovations — Linea Innovations is an energy production company that develops commercial fusion reactors with advanced fuel technology.

Portfolio highlights

• Ubiden — Ubiden provides Artificial intelligence and Internet of Things mobile network services. The company develops applications for electric vehicle charging services.
• Flosfia — FLOSFIA is a spin-off from a research of Kyoto University, specializing in film-formation by mist chemical vapor deposition (CVD). Making use of physical properties of gallium oxide (Ga2O3), FLOSFIA has devoted to development of low-loss power devices.
• Shippio — Shippio is a service that enables a wide range of collective international logistics arrangements and management solutions via web.The platform features full-service export and import solutions for various international transportation needs; a special dashboard designated for import and export business, shipment, cost analysis, and invoicemanagement; and documentation support.

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.

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.

Portfolio highlights

• Cosomil — Cosomil develops early diagnostic drugs for diseases and provides research and development support to healthcare companies.
• Unito — Unito offers people a friction-free lifestyle by pursuing optimization of living.
• NanoFrontier — NanoFrontier continues to market technologies that are widely available and incredibly inexpensive.

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.

Portfolio highlights

• iCARE — iCARE It is the No. 1 health and labor cloud introduced in Japan, which is selected by small and medium-sized enterprises suffering from lack of manpower and large enterprises expanding their business globally .
• Zen Intelligence — SoftRoid provides a software robot that patrols and collects data for analyzing the construction site.
• Catallaxy — Catallaxy is operates Japan's easiest-to-understand manufacturing industry media and sheet metal processing media.