Top 10 CleanTech Startup Investors in South Korea (June 2026)

Portfolio highlights

• UBATT — UBATT manufactures polymorphic thin lithium batteries using flame-retardant polymer solid electrolytes and uniform, large-capacity anode technology to produce polymer solid-state batteries, electrolytes, and lithium metal conductors, enabling companies to procure batteries for electric mobility and other uses.
• RECO — Integrated waste and resource management platform copmany
• Pion Electric — Pion Electric is a company that is reimagining the future of the energy industry and the worldwide market for emerging technologies.

Portfolio highlights

• N.THING — Established in January 2014, N.THING is a Seoul-based Agri-Food tech company leading innovation in agricultural products, by extension, in the farm-to-table food value chain by combining IoT technology and data. It developed the world’s first modular vertical farm ‘CUBE’ which is easy to expand. N.THING CUBE is a modularized farm with massproductivity where a dedicated OS provides the most optimized environment for each crop so as to create maximized efficiency. N.THING is the world’s first smart farming company that won the iF Design Award, Architecture in 2020. Also, it is a winner of Best of Innovation at the CES 2020 for its excellence in technology, which is the first ever in the agricultural field. N.THING is planning to expand its business on a large scale this year after it successfully completes the PoC process in the U.A.E. Our North American branch office located in New York. N.THING hopes to connect people to nature, things to things, people to things, and people to people through IoT technologies by creating Number of Things out of Nothing. .CUBE : CUBE is internet connected modular container vertical farm. It's an ultimate indoor farm which contains LED technology, real time monitoring system through IoT sensors, collected cultivation data, and upgradable software. We deliver the farm of the desired container form to the desired place.SQUARE : SQUARE is modular hydroponic kit. SQUARE can connect each module and share water. Users can connect as many as they want, grow greens and herbs, and make food great themselves. Each Square consists of four Pickcells, which contains special nutrient-rich sponge. With special sponge and hydroponic, it gives the most simple and effective gardening experience.Planty : Planty is the first Internet-connected social pot in the world. Planty gives pleasure to grow plants with your family, friend, and colleague. Planty enables the user to monitor the environmental information on temperature, soil moisture, and ambient light around plants and give water to plants any me or anywhere.Life : Life is a smart gardening journal aimed at the gardening sector. Plant lovers and gardeners are able to record their gardening activities and information and share them through Social Media. The user can easily insert weather data, location data, gardening activities, and plants’ events. Moreover, all the gardening data can be shared through social media.Sikmulsung: Sikmulsung is our show room to explore 'freshness' of our product and service. It is a place for everyone seeking for 'freshness' in visual, in texture, in taste, in flavor or even in atmosphere with, N.THING's in-store farm, exclusively made for Sikmulsung, special F&B's and our end products.
• MangoBoost — Data Processing Unit (DPU) is a next-generation server accelerator designed to orchestrate various intra-server devices (e.g., CPU, GPU, SSD, NPU, NIC). By maximizing the datacenter’s overall performance and cost efficiency, DPU is now considered as the most important HW/SW solution to realize the next-generation extreme-scale AI serverinfrastructure. However, despite its critical necessity from the datacenter and AI infrastructure, there is no market-leading DPU solution which can meet the customer’s actual demand due to its HW/SW complexity and the application/model heterogeneity. MangoBoost is currently the world’s most highly recognized DPU startup located in US and Korea. We provide the world’s most advanced and flexible DPU HW/SW solutions in order to fully satisfy the needs of various customers. Our DPU HW is fully composable by integrating its rich set of DPU features to construct our customer-optimal DPUs. At the same time, our DPU SW enables to seamlessly deploy the solution to any customer environment. As a result, our DPU solutions are considered very promising to realize the next-generation AI/datacenter infrastructure, and thus they are currently evaluated at various global-leading companies. MangoBoost was founded in early 2022 to commercialize 7 year of top-tier DPU research outcomes achieved at Seoul National University (e.g., many full-system DPU prototypes, many ISCA/MICRO/ASPLOS/OSDI/ATC papers). The current team consists of 45+ system engineers including ~20 top-tier PhDs from Carnegie Mellon University, Seoul National University, POSTECH, U Toronto, and ~20 industry experts from Intel, Microsoft, Samsung, and Naver.
• Aim Intelligence — Leading AI Security & Safety Solutions Provider - Specializing in AI Risk Detection, Mitigation, and Elimination through Advanced Red Teaming and Defensive Systems | Leading provider of AI Security, Safety, and Compliance solutions

Portfolio highlights

• Prosper — Prosper's offering includes fee-free investments in public market index funds, including fund fees, as well as SIPP and ISA wrappers.
• Centra Funding — Centra funding is a financial funding company that offers finance solution that allows small businesses to acquire equipment easily.
• Getty Realty — Getty Realty Corp. (NYSE: GTY) is a publicly traded, net lease REIT specializing in convenience, automotive and other single tenant retail real estate.

Portfolio highlights

• Petch — Petch is a digital services provider that offers business consulting, content provision, food supply, and collaborative branding for pet.
• Dear Monday — Dear Monday is a work service platform that specializes in balancing work and vacation. It provides high-end work equipment to provide a superior experience to working in the office or from home.
• Safe Kitchen Company — Safe Kitchen Company is a kitchen cleaning and maintenance services company.

Portfolio highlights

• TESOLLO — TESOLLO develops robot and motion presenter products.
• Stockeeper — Stockeeper creates and operates a Korean beef asset platform, Bankau, that connects consumers and producers.
• Stress Solution — Based on unique medical and scientific information and ECG waveforms, Stress Solution creates sound that regulates and initiates the equilibrium of the autonomic nervous system. Currently, Healing Bit is utilizing wearable technology to detect stress in real time. Through this, an autonomous feedback system that uses artificial intelligence topredict individual stress level situations and take preventative measures is being developed.

Portfolio highlights

• Levit — Mobile commerce app that allows customers to have an enjoyable and affordable shopping experience
• Awexome Ray — Awexome Ray is a company that manufactures next-generation X-ray generator.
• Green Mineral — Green Mineral specializes in recycling metals in an environmentally friendly and cost-effective manner using microalgae. Green Mineral has developed technology to recycle lithium in an environmentally friendly manner by extracting lithium using a bio-mineralization technique rather than an existing organic solvent.

Portfolio highlights

• Flexell Space — FLEXELL SPACE primarily focuses on the development and manufacturing of space solar cells, aiming to provide differentiated products for our customers in the space industry
• Habit Factory — Habit Factory provides financial big data analytics solutions.
• Featuring — Featuring’s goal is to make it easy for anyone to see and utilize the power of influencers. Today, as companies are accelerating their transition to digital business due to COVID-19, the number of companies leveraging influencers is explosively increasing. Feauturing allows brands and marketers to discover product fit influencers and helps matchingbased on their needs. Currently, over 3,600 brands are using Featuring and more than 8,500 influencer campaigns have been done. As a Korea-based startup, Featuring plans on expanding the business to Far East Asia including Japan and China.

Portfolio highlights

• Tynapse — Tynapse develops artificial intelligence security and governance software focused on monitoring and controlling AI agents in enterprise environments. The company provides a runtime trust layer that evaluates AI-generated outputs, tool usage, and automated actions in real time to identify risks such as hallucinations, prompt injection attacks, dataleakage, and unauthorized behavior. Its platform includes AI guardrails, compliance monitoring, audit logging, and explainability tools designed to support regulatory and operational oversight for AI systems. Tynapse also generates traceability records and trust attestation documentation that organizations can use for governance and compliance processes. The company’s technology integrates between enterprise applications and large language models to inspect requests, enforce policies, and manage sensitive data handling. Its solutions are used in sectors such as finance and enterprise software where AI systems require security controls, monitoring, and accountability mechanisms.
• FairSquare Labs — Disrupting Trad-Fi And Accelerating The Arrival Of Web3
• Ohouse — No.1 Interior Onestop Platform

Portfolio highlights

• CLEANBELL — CLEANBELL provides information about cleaning companies in Korea.

Portfolio highlights

• 33M2 — 33M2 is a housing rental platform.
• MOAIS — MOAIS develops a smartphone AI solution that analyzes golf swing problem and offers a lesson solution. It is an on-device AI optimized for smart phones, has a video pose estimation, video segmentation, video classification, video object detection, and image processing of golf swing video.
• AD System — AD System focuses on the development, manufacturing, sales and repairing of drones and other unmanned aerial vehicles.