Top 50 CleanTech Angel Investors in Europe in May 2026

Portfolio highlights

• Yupp — Every AI for everyone
• Karat Financial — Karat is the best card for creators, helping you save money, earn rewards, and grow your channel faster - because content IS a business.
• Vantage Discovery — Vantage Discovery is a generative AI-powered SaaS platform that enables intelligent search, discovery, and personalized recommendations so apps can deliver breathtaking customer experiences.

Portfolio highlights

• Habito — We're the Treating Customers Fairly Champion of 2023 as voted for in the British Bank Awards. We're here to make mortgages easier - no paperwork, no stress and no fees.
• Kombo — One unified API for HRIS, Payroll & ATS
• Bounti — Bounti helps organizations steer, enable, and scale their frontline employees, combining training, quality control, communication, and operations execution into one intuitive app. With Bounti, companies can maintain consistent quality and operations, streamline training and reach their entire workforce in more than 100 languages.

Portfolio highlights

• Agnikul — Agnikul Cosmos designs and manufactures orbital-class launch vehicles powered by 3D-printed engines. From custom payloads to affordable private launches, we make space access simple, scalable, and mission-focused.
• Log 9 Materials — Log 9 Materials Scientific Private Limited is a graphene research and development company. At Log 9 Materials we are determined to accelerate the commercialization of graphene nanotechnology. We have just developed the first commercial product on graphene- 'Smoke-safe'. This innovative graphene based cigarette filter reduces the risk ofgetting cancer by 90%. We offer a wide range of graphene (CVD graphene, rGO) and its derivatives. We bring to you graphene as researchers and not just manufactures, so we understand the triviality of the grade of our products.
• Toffee Ride - Learning App for Classes I - IV — Developed by a group of IIM, NIT alumni, with the support of academicians and child development experts, Toffee Ride is an app-based learning program that helps your child develop a thorough understanding of fundamental concepts and improve their language skills. Toffee Ride helps to make productive use of your kid's screen time by keepingthem engaged through a wide variety of fun-filled learning activities. Toffee Ride is specifically designed for Classes I-IV and contains more than 800 + lessons and 6000 + activities, which provide comprehensive coverage of English, Maths, EVS, GK, Social Studies, and Life Skills. Our Vision: “Making premium education affordable”The level of personalized attention required during the formative years is lacking in most schools, except for a few premium ones. Moreover, most parents, especially working professionals, often find it difficult to find time to compliment their kids learning in school. A rather serious implication of this is that children whose development lag behind during their early years find it very difficult to catch up in their higher classes. Through Toffee Ride, we attempt to bridge this gap using technology as an enabler to provide the much-needed personal attention in early learning.

Portfolio highlights

• Askly — Add multilingual chat to any site in 2 minutes. Providing multilingual customer support is easy and affordable. Start a 30-day free trial today.
• Snabb — Barking delights vehicle owners by enabling services such as parking, washing, charging, and fuelling from one user-friendly and convenient interface- the Barking App. Browse, book, navigate, start, pay, review and manage your vehicle services from one easy-to-use App.Founded in 2015, we've grown from a Tallinn-based private parking App toan international platform that serves over 50,000 users in 10 markets on a monthly basis.We are constantly working towards connecting all vehicle service providers to our platform and thus enabling the ultimate convenience and simplicity to vehicle owners.
• Promoty — Influencer marketing platform that helps you to find creators, manage influencer relationships, and save time on influencer marketing. Get started here!

Portfolio highlights

• autarc — We supercharge installers with our OS to become heat pump champions
• Cylib — The cylib process transfers waste from end of life batteries or production scrap into marketable products. Cylib covers all steps from the discharging of batteries up to hydrometallurgical extraction. Since the whole process is in one hand, also the processing of production scraps as well as black mass is possible.
• Nesnězeno — Nesnezeno is a platform that helps restaurants, shops, and hotels eliminate the waste of quality food. Through their mobile platform, they sell day-of treats that are nearing their expiration date.

Portfolio highlights

• Inoqo — In a world of over, mis- or blurred information, inoqo wants to provide consumers with scientific-based data on the environmental, social and biodiversity impact of familiar grocery products. Our mission is to help all of us aligning our daily purchasing decisions to our key concerns so that we can actively contribute to a sustainableproduction-consumption cycle.The app uses a specific innovative technology that can passively and smartly track the user’s grocery basket for informing them about -for example- the CO2 impact of their purchase and how aligned it is to their environmental priorities or social valuesThe solution will actively recommend alternative products of lower impact and encourage them through personalized content, gamification and community challenges to further pursue a sustainable lifestyle.We strongly believe that our daily habits can change the world. Our vision is to enable millions of consumers around the globe to learn why and how their consumption decisions impact biodiversity, climate and their own well-being. We want to accelerate the change towards sustainable production: as users consume more responsibly, they create healthy competition between companies who start to produce responsibly.We have ten years left to cut our CO2 emissions by half. From now on, every action counts. Join inoqo.
• Paired — Paired is your guide to improve your relationship via fun daily questions, couple quizzes, couple games and relationship advice. Try the Paired couples app free now.
• Mimo — Mimo is an app that teaches the computer science in a fun and interactive way. Mimo’s lessons are fun and interactive, fit into people’s everyday lives, and lead them to make a habit of self-improvement. Getting through to more than 1.5 million people and achieving completion numbers far above the industry average, Mimo is well on its way tobecoming the one-stop shop for education and entertainment on the go.

Portfolio highlights

• Hepta Insights — Hepta provides automated power grid management and analysis using autonomous drones and powerful analytics software. Visit our website to find out more!

Portfolio highlights

• Cylib — The cylib process transfers waste from end of life batteries or production scrap into marketable products. Cylib covers all steps from the discharging of batteries up to hydrometallurgical extraction. Since the whole process is in one hand, also the processing of production scraps as well as black mass is possible.

Portfolio highlights

• Selina — Stay in stylish accommodations with vibrant spaces, community-driven events, and unforgettable experiences. Book your Socialtel adventure today!
• Circles - Online Group Support — Join Circles, the leading support group solution for recovery from narcissistic abuse and toxic relationships. Find support and healing today.
• Glide Identity — Transform your digital security with Glide Identity's AI-powered authentication suite. Our solutions - Magical Auth, Smart Checkout, and That's Me - deliver unmatched security with seamless user experience

Portfolio highlights

• BTRY — BTRY is a spin-off of EMPA and ETH and is developing the industry's first energy-dense solid-state battery, using sophisticated semiconductor manufacturing technologies.
• Cylib — The cylib process transfers waste from end of life batteries or production scrap into marketable products. Cylib covers all steps from the discharging of batteries up to hydrometallurgical extraction. Since the whole process is in one hand, also the processing of production scraps as well as black mass is possible.

Portfolio highlights

• Certivity — Certivity offers software to model digital regulatory twins of their products. This will ensure that current regulatory requirements are integrated in the right place in the engineering process. Product compliance will be smarter, safer, more transparent, more efficient, and significantly cheaper.
• DeepDrive — We are DeepDrive. We are powered by fusion. Absolute professionalism mixed up with our deeply rooted urge to discover. Deep expertise meets revolutionary innovations.
• Moonblock — Moonblock is a tool to navigate Web3 with the right insights with a Web3 Brand Intelligence platform.

Portfolio highlights

• Bikeep — Smart bike and e-scooter stations with app access, fire-safe e-charging, and real-time monitoring from anywhere. 10,000+ devices across 30+ countries.
• Promoty — Influencer marketing platform that helps you to find creators, manage influencer relationships, and save time on influencer marketing. Get started here!
• FleetFox — Full-stack fleet care service. Hands-on fleet services powered by technology for car-sharing and business fleets across Europe.

Portfolio highlights

• Montamo — Montamo trains lateral entrants with standardized methods. We rely on both our on-site academy and our digital learning software.
• Graswald AI — Graswald engages in the creation of natural and digital 3D worlds for the entertainment industry.
• Trade Machines FI GmbH — TradeMachines understands how difficult it is to trust in used machinery. They work with trustful industrial auctioneers and renowned machinery traders to ensure you receive the best connection between the two. Industrial auctions are a popular possibility to find great bargains when it comes to used machinery. In these industrial auctionspotential buyers find used equipment of companies who became insolvent or who decided to get rid of a selection of their machines. But industrial auctions are not the only way how to find the right used machines for cheap prices. Machinery traders list their offers on TradeMachines as well. As a result of the extensive offer of used machines, it is much easier and less time consuming to the find right offer.

Portfolio highlights

• Oxwash — Powered by Vanish, Oxwash provides on-demand laundry and eco-friendly dry cleaning services, creating a simple and sustainable laundry service for all.
• Metagood — Tokenization as a Service for Modern Capital Markets
• Tem-Energy — Power, as it should be. We've reinvented how energy is bought and sold, so businesses pay less and generators earn more.

Portfolio highlights

• SpAItial — SpAItial is a novel artificial intelligence paradigm that can create and reason about the physics and appearance of both imagined and real-world surroundings.
• Cylib — The cylib process transfers waste from end of life batteries or production scrap into marketable products. Cylib covers all steps from the discharging of batteries up to hydrometallurgical extraction. Since the whole process is in one hand, also the processing of production scraps as well as black mass is possible.
• AllFocal Optics — AllFocal Optics revolutionizes display technology through groundbreaking nanophotonic solutions.

Portfolio highlights

• eco.mio — eco.mio enables companies to reach their climate targets while realizing significant savings: Incentivize employees to travel consciously with eco mio's end-to-end integrated software solution.
• Viora - visible through confidence — Ada Growth is on a mission to put a mentor in every woman's pocket. We combine AI with microlearning to provide professional growth and development tools for women in the workplace and help companies attract, retain, and grow female talent. Download the Ada App today!The Ada App is a microlearning app that provides 2 minute short formvideos, miniquizzes, action items, and summaries that lead to long-term behavioral changes in the workplace. It also contains a digital mentor that can provide dynamic coaching in the spirit of the Ada App library of content, so that Ada App users have access to casual lessons when they have a few minutes a day as well as immediate feedback for any upcoming situation.Ada Growth serves the B2B enterprise and SME space primarily to companies with over 400 employees. We sell a professional growth / EdTech / L&D solution to HR, Employee Training and DEI administrators. We are vertical agnostic and provide a growth experience for both white collar and blue collar workers. Most EdTech solutions tend to flow to the corporate office layer of an enterprise, where this is a saturation of resources available. Many of our users have not been given professional growth tools purposefully built for them before or made flexible for their lifestyle, unlocking value for both the employee as well as the employer.We are the first enterprise-ready professional EdTech solution built specifically for women.
• 123-Transporter — Transporter mieten ab nur 45€ Volle 24h | Unlimitierte KM | digitale Vignette inkl. Einfach. Flächendeckend. Kundenzentriert: https://de.trustpilot.com/review/123-transporter.at

Portfolio highlights

• Mos — Meet Mos: the way smart students get money for college
• Airly — Air Quality Monitor provides local data about air quality in your city. This allows you to understand the risks and take actions. Meet Airly!
• Collective — Collective offers financial solutions designed for self-employed business owners - company formation, tax, accounting & bookkeeping.

Portfolio highlights

• Oxwash — Powered by Vanish, Oxwash provides on-demand laundry and eco-friendly dry cleaning services, creating a simple and sustainable laundry service for all.
• Tem-Energy — Power, as it should be. We've reinvented how energy is bought and sold, so businesses pay less and generators earn more.
• Papaya — Papaya offers platform to source, run and manage your electric vehicles.

Portfolio highlights

• Lawyerd — Lawyerd-supervised content takedowns at scale, grounded in the Berne Convention, EU Directive 2019/790, the DMCA and GDPR Article 17. For brands and individuals whose name, logo or work is being used without authorisation.
• Voltaage — Voltage makes it easy for fleet managers of SMEs to simulate, plan and run their fleet electrification without disrupting business operations and drivers’ habits. Our marketplace offers and crafts tailored package deals for EVs, charging stations & electric fuel cards.With our expertise: We help them to make data-driven decisions and tounderstand the true opportunity cost of every car in their fleet, We simulate the optimal EV fleet composition in days instead of months, And we compare the total cost of ownership (TCO) and carbon emissions projections using fleet data. Our business model is based on 2 streams of revenues, a SaaS subscription model charged monthly to companies using our software for their transition to electric mobility; and a brokerage fee, charged to partners for any solution sold through our platform (cars, charging stations, aftersale solutions)Join the fleet revolution.
• PowerMarket — A platform for turn-key solar life cycle management.

Portfolio highlights

• Luko — Luko is an insurance company that provides a device that focuses on home security and reduces electricity bills. It features an AI-powered sensor designed for monitoring and preventing home accidents. Luko aims to move insurance from a claims-based model to prevention with its proprietary technology.The company was founded in 2016 andheadquartered in Paris, France.
• Airly — Air Quality Monitor provides local data about air quality in your city. This allows you to understand the risks and take actions. Meet Airly!
• Peptone — We are the first in class pre-clinical translational biophysics company focusing on the discovery of novel therapeutics against intrinsically disordered targets.

Portfolio highlights

• Desia — Desia provides advanced AI applications for productivity, automation, and analytics for financial services.
• qomodo — Qomodo: La piattaforma BNPL innovativa. Rate a tasso zero, approvazioni veloci, transazioni sicure. Rivoluzionaria nell'acquisto per aziende e consumatori.
• Tranched — Introducing real-time on-chain securitisation. Fintech Lenders and Professional Investors can now launch an institutional-grade transaction up to 90% faster than before.

Portfolio highlights

• Reby — Reby is a European multinational company involved in the design, construction, financing, operation (DBFO) and maintenance of public sharing transport infrastructure. Today, Reby is the Southern Europe leader in the micromobility field, with over 15 agreements with public administrations. The company was founded by four entrepreneurs (Pep Gómez,Kiran Thomas, Cristina Castillo, and Guillem Pagès) in 2018 as a micromobility operator, winning the first public tender in Europe for kickscooters, in the city of Zaragoza (Spain). During the COVID-19 pandemic, the company increased its R&D efforts, expanding into the MaaS (mobility-as-a-service) economy and the investment banking/franchising business for public administrations (through PPPs), public utility companies, as well as SMEs.
• Sprig — Sprig is a user insights platform that enables product teams to build better product experiences by going beyond basic analytics. Discover how you can improve your product with Sprig.
• Mojo Motors — Mojo Motors helps car shoppers keep track of their preferred cars and get alerts when dealers drop prices and similar cars become available.

Portfolio highlights

• finres — finres is a science-based firm that uses artificial intelligence, big data, and research to increase food system resilience in the face of climate change by making investment decision-making robust and quick, as well as providing a comprehensive algorithmic solution for recognizing and assessing climate risks in order to prioritize adaptationefforts.
• kolum.earth — EU companies importing cement, iron and steel, aluminium, fertilisers, electricity or hydrogen from non-EU countries can use the kolum.earth software solution to create their Carbon Boder Adjustment Mechanism (CBAM) reporting, measure carbon emissions attached to their imports, and communicate with their non-EU suppliers to become fully CBAM-compliant.
• forward earth — Next-Gen carbon management for a sustainable future. AI-driven, automated, compliant, fast, and secure. Be prepared for requirements of CSRD, SFRD, EU-Taxonomy, and kick-start your carbon reduction and abatement program. White-label options for partners.

Portfolio highlights

• Distill — The domain name Distill.cc presents a sleek and innovative image, evoking thoughts of refinement, clarity, and distillation of ideas. With its concise 7 letter, 2 syllable, one-word structure, it is not only easy to remember but also exudes
• Xperiel — Xperiel's technology helps companies harness the magic of industry-changing apps like Uber, Starbucks, and Pokemon Go, where the physical world meets the digital.
• Forward — Forward is revolutionary primary care focused on your long-term health, with top-rated doctors supported by technology.

Portfolio highlights

• trawa — The partner for renewable and affordable electricity for businesses. Get electricity directly from solar and windparks with corporate PPAs.
• NeoCarbon — NeoCarbon reverses climate change by dramatically cutting costs of Direct Air Capture leveraging cooling towers around Europe. By retrofitting existing infrastructure without impacting their original function, the time and cost needed to set up a carbon capturing system is improved by up to 10x.

Portfolio highlights

• MÖ Foods — MÖ Kaurajogu is domestic, completely herbal and above all delicious. All our products are manufactured in Central Ostrobothnia, Lohtaja.
• React & Share — High volume, high quality feedback directly from your customers. React & Share helps digital comms teams improve their websites and satisfy their customers.
• Plain Complex — VUOROX IS AN AI-POWERED ROSTER SCHEDULING APP FOR HEALTHCARE

Portfolio highlights

• EWOR — EWOR is a platform dedicated to transforming aspiring entrepreneurs into successful startup founders through world-class education, mentorship, and investment opportunities.
• Climate X — Climate X combines climate science and econometrics to deliver precise climate risk data without any black boxes.
• Rhizocore Technologies — We develop high-performance strains of locally-sourced mycorrhizal fungi to improve tree growth, tree health and tree resiliency. We offer a sustainable solution to increase forest yields whilst improving the ability of trees to sequester carbon.

Portfolio highlights

• BTRY — BTRY is a spin-off of EMPA and ETH and is developing the industry's first energy-dense solid-state battery, using sophisticated semiconductor manufacturing technologies.
• Cylib — The cylib process transfers waste from end of life batteries or production scrap into marketable products. Cylib covers all steps from the discharging of batteries up to hydrometallurgical extraction. Since the whole process is in one hand, also the processing of production scraps as well as black mass is possible.

Portfolio highlights

• Enzai — Enzai's AI governance platform allows you to build and deploy AI with confidence. Measure your progress in AI responsibility, and get actionable steps with our 3-minute maturity assessment.
• Clarifeye — Clarifeye is a software development company that offers an augmented reality-based surgical navigation tool.
• Hyperline — Enjoy the most flexible billing platform for B2B SaaS businesses. Start today without a single line of code.

Portfolio highlights

• Heat Geek — Heat Geek offers expert advice on all aspects of the heating industry. Browse our knowledge hub online now.

Portfolio highlights

• Heat Geek — Heat Geek offers expert advice on all aspects of the heating industry. Browse our knowledge hub online now.

Portfolio highlights

• Soveren — Soveren helps engineering and security teams protect personal data by detecting privacy risks and analyzing real-time data flows within your infrastructure.
• Evercoin — Evercoin is a mobile application that provides a cryptocurrency exchange service. The application allows users to exchange cryptocurrencies like Bitcoin, Ethereum, Litecoin, Ripple, and Bitcoin Cash. Users can also trade from the safety and control of their own wallet. Evercoin was founded in 2017 and is headquartered in Santa Clara, California.
• Garnet Labs — Protect modern dev/ops environments with behavioral monitoring, threat detection and enforcement. Detect and block unknown threats in real-time before they impact users.

Portfolio highlights

• Bpacks — Tree bark packaging

Portfolio highlights

• Factored — Factored empowers landlords to access capital, allowing them to effectively meet capital needs, significantly enhance tenant living standards and drastically reduce carbon emissions from their rental properties.

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• Meloon — Meloon captures and converts carbon dioxide from the atmosphere.
• Femna Health — Femna Health offers virtual access to diagnostics and therapeutic solutions for women's health.

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• Altruistiq — Altruistiq is a decision-making environment for business sustainability teams.

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• Airly — Airly empowers individuals and communities with knowledge about the air they breathe. Airly is changing the way people see the air they breathe by providing accurate, hyper-local data about air pollution.
• IS-Wireless — 4G and 5G Mobile Networks of the Future

Portfolio highlights

• Bpacks — Tree bark packaging
• Casecraft AI — CaseCraft is a B2C SaaS platform that simplifies the small claims process with AI-driven automation—making legal claims quick, affordable, and stress-free. No lawyers, no complicated paperwork—just a seamless, user-friendly experience backed by legal expertise.We believe legal support should be accessible, modern, and easy to use—giving you thepower to resolve disputes efficiently from anywhere.

Portfolio highlights

• Berri AI — A website made with Typedream.
• Anarchy — AI's interface to the world
• Consensus — Consensus uses AI to extract and summarize scientific insights from peer-reviewed sources. For any question, what's the Consensus?

Portfolio highlights

• Zeedz — Gaming for a green future. Zeedz is a monster collectible game that targets real-world climate change. Discover a world of plantified magic, made in Berlin.
• Frinsh — Many ready-to-drink ginger shots are sweetened or blended with fruit juice and thus contain a lot of sugar. The Frinish Ginger Cubes, on the other hand, is made entirely with ginger. Our fresh ginger is processed into a fine ginger puree and then frozen promptly. This implies that the flavor and nutrients are kept better.
• TeaBlobs — TeaBlobs allows you to make tea fast, responsibly, and without using a bag. Now available in seven delectable flavors.

Portfolio highlights

• Heat Geek — Heat Geek offers expert advice on all aspects of the heating industry. Browse our knowledge hub online now.

Portfolio highlights

• Heat Geek — Heat Geek offers expert advice on all aspects of the heating industry. Browse our knowledge hub online now.

Portfolio highlights

• Altruistiq — Altruistiq is a decision-making environment for business sustainability teams.

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• Hydrologiq — Hydrologiq makes hydrogen the turnkey, scalable and immediate diesel replacement for off-road machinery. HydrologiqOS is the platform that handles everything from supply chain integration to on-the-ground operations.

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• Meloon — Meloon captures and converts carbon dioxide from the atmosphere.

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• MEplace — MEplace creates a new approach to children’s wellbeing and preschool education. MEplace was founded in 2019 and was headquartered in England, UK.
• Two — Buy Now, Pay Later for your business customers. Two makes it easy and safe to offer invoice as a payment method on your e-commerce site.
• Kota — Replace your tools, brokers and outdated processes with the only platform that handles the entire employee benefits journey.

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• Digital Earth Solutions — Digital Earth technologies hope to aid in the preservation of marine habitats through creative ocean modeling technologies

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• Meloon — Cutting edge membrane technology.

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• Bpacks — Tree bark packaging

Portfolio highlights

• Woodly Oy — Woodly® is an entirely new type of wood-based packaging material that can be used to substitute traditional fossil-based plastics. Woodly is recyclable can be made into transparent and flexible packaging, and the material mimics the best qualities of traditional plastics.