Top 20 CleanTech VC Funds & Investors in Japan (September 2026)

Portfolio highlights

• Ubiden — Ubiden provides Artificial intelligence and Internet of Things mobile network services. The company develops applications for electric vehicle charging services.
• Direava — Direava is a medical device company that manufactures, sells, leases, and maintains medical equipments along with consulting services.
• Nanofiber Quantum Technologies — Discover how NanoQT builds the foundation for scalable quantum computing with nanofiber cavity-QED technology and high-fidelity quantum connectivity.

Portfolio highlights

• PXP — We are Japanese green tech startup company established in 2020 aiming to realize clean energy that can be used freely by anyone, anywhere and anytime.
• Space BD — Space BD aims to become a one-stop shop to respond to all issues related to industrialization of space, and alleviate the work of businesses that are developing new technologies.
• Prediction — Prediction is an advertising company that provides video advertising media and AI-powered potential customer estimation services.

Portfolio highlights

• Rayout — Rayout is a business consulting company that provides creative content development, recruitment videos, and web production services.
• CareMaker — CareMaker is a technology company that develops and operates visit schedule management and regional collaboration cloud services.
• Rehabilitation 3.0 — Rehabilitation 3.0 focuses on a preventive medical system that provides AI assessment and tracking on health, exercise, mood, and wellness.

Portfolio highlights

• New Chat — New Chat is a technology company that develops communication software focused on visual and interactive group interactions. The company builds platforms designed to help small, close-knit groups of people share daily experiences through short-form multimedia content. Its primary software automates the creation of collaborative video logs byprompting users for brief, periodic updates throughout the day. By structuring messaging around shared visual moments, the business aims to provide an alternative to traditional text-based group chats and standard social media networking.
• First Coffee — Discover the best specialty coffee in India with our range of single origin Arabica beans and exclusive merchandise. Shop online at First Coffee for freshly roasted, quality blends.
• Tellus Global — Tellus Global is a company focused on creating new businesses using satellite data, AI, and software technologies,Its core mission is to make satellite information accessible and useful across industries such as agriculture, environmental conservation, construction, finance, and disaster management.

Portfolio highlights

• CleanDevice Technology — CleanDevice Technology maintains a presence in ever-changing times and societies by constantly taking on new and innovative technological challenges. Their services include car air conditioner cleaning businesses, web media management businesses, kitchen car operation businesses, seafood processing and sales businesses, and more.

Portfolio highlights

• Aki Katsu — Aki Katsu revitalizes housing market and produces businesses such as commercial facilities, dining facilities, and accommodation facilities. The company aims to be a comprehensive producer company for utilizing vacant houses.
• Switch Smile — Switch Smile develops and provides the POI marketing platform, Pinable.
• CleanDevice Technology — CleanDevice Technology maintains a presence in ever-changing times and societies by constantly taking on new and innovative technological challenges. Their services include car air conditioner cleaning businesses, web media management businesses, kitchen car operation businesses, seafood processing and sales businesses, and more.

Portfolio highlights

• atierra — Atierra develops a microalgae bioproduction platform that uses carbon dioxide and controlled cultivation processes to produce fatty acid-rich oils. The oils are intended as feedstocks for sustainable aviation fuel and as inputs for biomaterials, food, wellness, and skincare applications. The company also explores microalgae-derived materials,including pigment products.

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.

Portfolio highlights

• Landsview — Landsview is an IT company that provides software development, numerical analysis, testing equipment, and measurement services.
• Flora — Flora develops a big data platform for female health, collecting data on individual symptoms, work performance, health conditions etc.
• Izanagi Games — Izanagi Games is an entertainment company that publishes interactive games and films. The services provided by the company include the production and distribution of interactive piercing games and story-based movies, allowing creators and development teams to present their projects on a global platform and provide players with an immersive andseamless gaming experience.

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

• ATOMica — ATOMica is a co-working space and business management company for conference rooms, event venues, circles, and schools. The company uses coworking spaces as HUBs to provide services that maximize individuals' power. It can be used for a variety of purposes, including coworking space, shared office space, meetings, events, and web seminars. Itis also possible to use it only once. They plan and run local communities that bring together a diverse range of people, including students, workers, businesses, universities, and governments.
• Esree Energy — Esree Energy is a creator of thermal-based energy storage systems designed to effectively store and distribute electricity. The business stores excess energy as thermal differentials using compressed carbon dioxide and heat pump concepts.
• 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

• Femtum — Femtum offers mid-infrared pulsed fibre lasers, fibre amplifiers, and tunable fibre lasers for medical and industrial use. They give access to mid-infrared spectroscopy with laser systems. Their team developed know-how and patented technologies to make a difference in the laser industry.
• Silveray — Silveray develop affordable large-area direct conversion detectors for the X-ray imaging market.
• Pinc Technologies — PINC's nanoPPLN platform brings nonlinear circuits to integrated photonics, unlocking breakthroughs in sensing, computing, communications, and beyond.

Portfolio highlights

• Koloma — Koloma is revolutionizing clean energy by harnessing naturally occurring hydrogen from deep within the Earth.
• 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.

Portfolio highlights

• Akari Hosho — Akari Hosho provides a group of trusted professionals, including lawyers and judicial scriveners. Akari Hosho provides a guarantee service.
• Black Cat Carnival — Black Cat Carnival Inc. is a communication service development company.
• Carbon CryoCapture — Carbon CryoCapture specializes in the carbon dioxide separation systems aimed at creating economically viable, energy-efficient, and genuinely sustainable CO2 separation and recovery technologies. The company is dedicated to deploying cost-effective, efficient systems for CO2 capture that integrate smoothly with current infrastructures, all whileenhancing energy consumption and production. This enables clients to attain zero emissions throughout the development and application of resources.

Portfolio highlights

• nat — Driven by the vision of "IMPACT THE SOCIETY", we are dedicated to creating innovative products that transform everyday life and work. By bringing these solutions to life and integrating them into society, we aspire to make our products and services become an indispensable part of people's daily lives.
• Ascenders — Ascenders is a sports human resources business platform.
• Chitose Group — CHITOSE GROUP is a family of biotechnology companies operating mainly in Southeast Asia and Japan with an aim of leaving mankind with an environment where they can live in abundance for over a thousand years. CHITOSE GROUP is creating new values in the fields of agriculture, medical, food, energy, chemistry and others through “Technologicaldevelopment capabilities in the biotechnology field by constantly promoting economic rationality” and “Business development capabilities for drawing a path towards commercialization by understanding the essence and limitations of biotechnology”.

Portfolio highlights

• Kikuvi — Kikuvi develops an AI-driven interview agent that automates question design, execution, and analysis. It eliminates the effort of listening, allowing users to focus their time on decision-making and creativity.
• Mign — Mign offers a generative AI-related SaaS solutions for the construction and real estate fields.
• Cosmobloom — Cosmobloom Co. is a manufacturing company that analyses, designs, and develops space solar power generation systems and solar power sails.

Portfolio highlights

• Anipos — Anipos is an application that allows you to easily claim pet insurance.
• IoTBASE — IoTBASE offers IoT cloud services.
• 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

• Energy Trade — Energy Trade is a energy & power wholesaler that procures and provides wholesale power services for retail electric power companies.

Portfolio highlights

• ULUU — ULUU is an ocean material that replaces plastic and actively benefits the world.
• Aquaria — Aquaria provides solutions to secure access to clean water. The organization adapts its approaches based on the needs of these communities. It addresses water-related challenges through various methods.
• 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.

Portfolio highlights

• FullDepth — FullDepth is a company that creates marine drones to aid with underwater monitoring. The company's drones work in tandem with marine navigation technology, which monitors and captures aquatic life, communicates data to connected devices, and provides infiltration information that can be freely used with a cloud service, allowing customers towitness and study marine life for educational and recreational purposes.FullDepth is a company that creates marine drones to aid with underwater monitoring. The company's drones work in tandem with marine navigation technology, which monitors and captures aquatic life, communicates data to connected devices, and provides infiltration information that can be freely used with a cloud service, allowing customers to witness and study marine life for educational and recreational purposes.
• Peco Free — Peco Free is a school meal pre-order service that is selected using a smartphone.
• Smart Craft —