Top 25 Clean Energy Startup Investors in Japan (July 2026)

Portfolio highlights

• Alxtal — Alxtal is a tech company who optimize the development, design, and manufacturing processes of the manufacturing industry with IT and AI.
• Direava —
• Zerodoor HD — Zerodoor HD specializes in digital transformation in constructing industry.

Portfolio highlights

• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.
• Pixie Dust Technologies — Pixie Dust Technologies is a developer of computational technologies, including its ultrasonic phased array system with which one can generate force in mid-air; transport things in mid-air without touching anything; target and deliver different sounds from person to person in a crowd; direct guide-dogs; and even apply this in agricultural farming.

Portfolio highlights

• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.

Portfolio highlights

• FLATBOYS — FLATBOYS specializes in planning, development and operation of internet business.
• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.

Portfolio highlights

• Terra Labo — Terra Labo conducts research and development on long-range unmanned aerial vehicles.
• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.

Portfolio highlights

• EF Polymer — EF Polymer Private Limited providing 100% Organic and fully Biodegradable Super Absorbent Polymer cum Fertilizer to reduce Water and Fertilizer requirement for your plant. Let's grow organically.
• DigitalArchi — Realizing a revolution in architecture.
• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.

Portfolio highlights

• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.
• Surv Biopharma — Surv Biopharma develops a drug discovery platform that facilitates research and development of veterinary drugs and pharmaceutical products.
• Cardio Intelligence — Cardio Intelligence develops an AI automated diagnostic system.

Portfolio highlights

• Base Food — Base Food produces high-quality, flavorful staple food products that are nutritionally-balanced and convenient.
• Moi — Moi Corporation was founded to deliver on the promise of the Twitcasting social live streaming platform. We developed Twitcasting to enable people to stream and share live video anytime, anywhere - connecting the world in real-time. TwitCasting provides a live streaming social platform that enables real-time chat between broacasters andviewers, through apps or desktop. Users can follow their favorite broadcasters and receive notifications when new a new live stream is about to start. Broadcasters can save and publish their live streams for later viewing.In early 2014 we added "Collabo" to Twitcasting, enabling as many as 6 users to broadcast together, in a single display. Viewers can join a broadcast that is already streaming live and broadcast together. It is the first app to support multi-device broadcasting in a single stream on mobile and PC. Our user base has doubled every year, and hit 7.5 million in September, 2014. While the largest part of our base is in Asia, users in US, Brazil, Mexico and other Latin American countries are now growing rapidly. About 70% of our users are under 25 years old, & approximately 95% of broadcasters shoot on mobile. 
• Wonderplanet — Wonderplanet designs and develops native language applications and games for smart phones and tablets. The company was founded in 2012 and is based in Nagoya, Japan.

Portfolio highlights

• CaTe —
• FunPep — FunPep is an Industry-university collaboration bioventure company.
• Triorb — Triorb is a technology company that specializes in robot mobility development with the help of software and hardware solutions.

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

• THE RICH — THE RICH is a hair care brand that contains silk regenerating and repairing ingredients.
• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.
• One World Technology —

Portfolio highlights

• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.

Portfolio highlights

• Opt Fit — Opt Fit is a fitness industry that provides fitness, wellness and health-care services.
• Gaxi — Gaxie is an IT firm that provides a cloud management system and manages scholarship sites for business.
• Factory X —

Portfolio highlights

• Alpaca — Alpaca API allows developers and businesses to build apps, embed investing, and trade algorithms
• Genki Robotics — Genki Robotics is a humanoid robotics that offers to aid practical applications of physical AI.
• Snack Technologies — Snack Technologies specializes in the development and operation of “SnaTech,” an innovative business support application designed for snack bars, helping operators streamline daily management, improve customer engagement, optimize inventory and sales tracking, and enhance overall business efficiency through digital solutions tailored to the foodand hospitality industry.

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

• Tacoms — CAMEL is a service that allows you to easily manage orders from multiple food delivery / takeout services on a single tablet.
• Any Style —
• Smile Robotics — Smile Robotics provides Service Robots in Japan.

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

• 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

• 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

• 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.
• Innovative Space Carrier — Innovative Space Carrier is a aerospace company that offers space transportation systems, planning, drafting and technology strategies.

Portfolio highlights

• Quemix — Quemix is an IT company specialized in providing quantum computing solutions.
• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.

Portfolio highlights

• Caguuu — Caguuu offers high-quality designer furniture at affordable prices, through e-commerce, eliminating middlemen and store operating costs.
• Diggle — DIGGLE is a service that provides fundamental management accounting management on the cloud called fraud management. It is possible to reduce the mistakes and man-hours of the fraud management task and easily carry out the fraud management task even if it is not an expert in finance or accounting.DIGGLE covers budget creation work and budgetrecord comparison work, especially in the foreman management work. In the budget creation work, the KPI and the budget are automatically created by inputting the target numerical value to the preset parameters utilizing the budget generator function, while the forecast contrasting work is made up of the financial information, non-financial information It is easy to calculate by simply entering the numerical value, and it is possible to carry out calculation of the forecast contrast.
• Instalimb — Instalimb is the world's first 3D printing prosthesis business.

Portfolio highlights

• Eco-Pork — Eco-Pork is a co-creation solution farm that supports farmers' food productivity improvement. It is connecting the pig and technology, pork ( Pork ) new business ecosystems ( Ecosystem By building a), in the pork growing demand around the world, to get the most out of the food supply capacity is finite.
• Grafenary — Graphenary creates unique graphene optical devices using graphene materials with a variety of remarkable features.
• Orbital Lasers — Orbital is a space tech company that provides space debris business to remove debris and a satellite LiDAR business to provide surface data.

Portfolio highlights

• REVORN — REVORN is a fragrance AI and DX research and development company. They develop products such as odor sensors that can respond to odor issues and needs. They provide consultation at a range of levels, from identifying issues to developing solutions.
• Helical Fusion — Helical Fusion is a startup company that aims to commercialize fusion energy using magnetic confinement of high-temperature plasmas.
• Illumi Medical — Illumi Medical is a manufacturing company that produces medical equipment and devices for the healthcare sector.

Portfolio highlights

• 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.
• Hacobell — Hacobell is a logistics company that offers services in freight servicing, dispatch, and delivery.
• Power Wave — Power Wave seeks a carbon-neutral world using wave technology for wireless power, tackling global warming and fuel depletion.