Top 50 Renewable Energy Angel Investors in Europe in May 2026

Portfolio highlights

• Granola — Granola helps you keep momentum on what matters. You stay present, Granola turns your conversations into a rich, searchable memory.
• Neptyne — Neptyne is making spreadsheets programmable
• Voltfang — We integrate used electric car batteries into a battery storage system and thus build up a decentralized storage network.

Portfolio highlights

• MaxFense — MaxFense is a company that focuses on enhancing the security of the internet through their ethical products. Primary among their offerings is the MaxFense Endpoint Security, which enables clients to check, prevent, detect, and respond to potential information security threats, regardless of whether they originate from inside or outside theorganization. This approach aligns with contemporary security standards that have increasingly recognized the importance of robust endpoint security in the face of diversified threat vectors.
• Reel Energy — Reel empowers all companies to procure renewable electricity that makes a real difference for the climate.
• Daytona — Deploy Al code with confidence using Daytona's lightning-fast infrastructure. 90ms environment creation, stateful operations, and enterprise-grade security.

Portfolio highlights

• Voltfang — We integrate used electric car batteries into a battery storage system and thus build up a decentralized storage network.
• Heimladen — Heimladen is a renewable energy source that drives human mobility. They offer a platform that acts as a real estate partner, controls the charging infrastructure, and takes care of project planning while keeping costs low, and enabling tenants.
• Greenflash — Greenflash places a premium on quality, efficiency, and client happiness. We collaborate with world-class partners to deliver you high-quality components and cutting-edge technologies. Our customized energy solutions are tailored to your specific needs and circumstances in order to get the best potential outcome for you.

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

• autarc — We supercharge installers with our OS to become heat pump champions
• Heimladen — Heimladen is a renewable energy source that drives human mobility. They offer a platform that acts as a real estate partner, controls the charging infrastructure, and takes care of project planning while keeping costs low, and enabling tenants.
• Greenflash — Greenflash places a premium on quality, efficiency, and client happiness. We collaborate with world-class partners to deliver you high-quality components and cutting-edge technologies. Our customized energy solutions are tailored to your specific needs and circumstances in order to get the best potential outcome for you.

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• Bourn — Bourn's technology is designed to automate cash flow management, offering SMEs fast access to capital.
• Capsa AI — Providing next-generation investors with a competitive edge.
• Embed — The regulated Payments Platform unifying crypto and fiat rails. Fung has launched early beta. Sign up to secure your spot.

Portfolio highlights

• Reel Energy — Reel empowers all companies to procure renewable electricity that makes a real difference for the climate.

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• Balio — Personal Finance Manager and Investing
• Rauda AI — Rauda is an artificial intelligence platform specialized in automating customer service with the best customer experience. Take a quantum leap in productivity, reduce costs and improve customer satisfaction with the power of generative artificial intelligence.
• Solfy — Solfy is a Marketplace for self-consumption of solar energy.

Portfolio highlights

• Splitfy — Splitfy is the perfect app to collect money from your plans Group.
• Solfy — Solfy is a Marketplace for self-consumption of solar energy.
• Housfy — Housfy develops a digital platform designed to sell flats and houses between private individuals. The company's digital platform eliminates intermediation in the sale of houses, offering all the necessary tools for sellers and buyers to connect directly online, enabling home buyers and sellers to avoid traditional agencies and save brokeragefees.

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• fynk — Create, edit, negotiate and sign contracts quickly with fynk. Give your team back valuable time. Test it now for free!
• Balun — Balun is a machine learning platform that forecasts electricity generation with unrivaled precision by analyzing multiple meteorological and energy market inputs, allowing renewable energy producers to optimize production, reduce penalties, and assure a stable, efficient grid.
• Donnerstag.ai — Build, run and scale financial reconciliations across your core financial data and systems.

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• Asepha — Asepha is an AI clinical decision support (CDS) tool to help healthcare professionals make faster clinical decisions.
• ORA Technologies — E-Commerce, Super App
• THIRUMALS PAPER ARIZONA PVT. LTD. — TRADING PLATFORM OF PULP , PAPER & PACKAGING

Portfolio highlights

• Numbat — Numbat is a clean-tech company from Kempten (Allgäu). The competence lies in the development and production, as well as the operation of High-Power charging solutions with integrated battery storage system. The goal is to establish Europe's densest High-Power charging infrastructure to support e-mobility and its challenges. The battery storagereduces electricity costs and eases the burden on grids, while the integrated fast charging station allows customers/visitors/employees to fully charge their electric vehicles within 15 minutes. Depending on the location, the Numbats can be provided free of charge in a platform model. With its patented climate protection technology and multi-lifecycle approach, the Numbat is the most sustainable solutions on the market.
• ESFORIN SE — ESFORIN SE is a fully digital energy company, offering modularly integrable energy solutions – for both, power and gas.
• Efficient Energy Technology — Efficient Energy Technology makes renewable energy simple, safe, and dependable for everyone. Efficient Energy Technology develops a small power plant consisting of photovoltaic and storage for complete self-installation.

Portfolio highlights

• Peimi — Peimi is the definitive tool to automate the calculation of commissions. We integrate with the main CRM and ERP to obtain the data and display it in a safe and friendly environment for sales, HR and finance people to review and approve incentives. We integrate with the main CRMs and ERP on the market (Hubspot, Salesforce, Pipedrive...)
• Mas Leads — Mas Leads Technologies, through its SaaS (Software as a Service), assists B2B firms' Marketing and Sales Departments in obtaining the best real-time data on new potential clients in national and international marketplaces, thereby automating the lead creation process.
• Hoop Carpool — Hoop Carpool is a SaaS Carpooling Platform for Companies, Universities and Citi-halls

Portfolio highlights

• Enpal — Kostenlose Planung von Solaranlagen. Gewinnbringende & schnelle Umsetzung von Photovoltaikanlagen inklusive professionelle Installation & Netzanschluss. Zum Festpreis!
• memmo.me — memmo.me provides a webpage for offering and distributing personalized video messages from actors, athletes, musicians, and other talent.
• TAU Systems — TAU Systems provides medical imaging technology.

Portfolio highlights

• Reel Energy — Reel empowers all companies to procure renewable electricity that makes a real difference for the climate.

Portfolio highlights

• LastSwab — LastSwab launched May 2019 through the crowdfunding platform Kickstarter. At $16 a swab, LastSwab is meant to last at least 1,000 uses and is the easy-to-clean, reusable alternative to the abundant waste caused by single-use swabs around the globe. The tip of the swab is made from medical silicone and nylon and comes in a biodegradable case made ofa corn-based material. LastSwab can be easily cleaned using soap and water and is also dishwasher safe. It comes in a standard swab for cleaning and a pointed swab for makeup application. Be the change and #SwabYourHabits.
• LastObject — LastObject is a Danish manufacturing company, based in Copenhagen that sells sustainable products online and in retail globally. Having been launched in 2016, it launches new products through crowdfunding campaigns on Kickstarter and Indiegogo. The company is best known for producing LastSwab, a reusable cotton swab.

Portfolio highlights

• Zeigo — Zeigo by Schneider Electric provides sustainability software for efficient carbon reduction and supply chain decarbonization, aiming for a carbon-free future.
• Ecolectro — Ecolectro is solving the biggest challenges in making Green Hydrogen. Our alkaline ion-exchange membranes and polymers make clean fuel and decarbonize industry.
• Sniffer Robotics — Comprehensive methane emissions detection and quantification, advanced imagery and analytics; Sniffer Robotics provides advanced solutions that benefit the environment.

Portfolio highlights

• Kickscale — The AI-powered conversation intelligence platform records, transcribes, and analyzes meetings to provide tailored training recommendations to every sales rep
• VoiceLine — VoiceLine is AI-powered field sales revenue intelligence. Document any customer interactions in seconds, get actionable insights and boost sales performance. Start today!
• Planted Green — Planted Green plants mixed forests to compensate for CO2 emissions.

Portfolio highlights

• autarkize — autarkize scales a market-ready system technology with which a high-quality gas made of methane and hydrogen is extracted decentrally from residues.
• Planted Green — Planted Green plants mixed forests to compensate for CO2 emissions.

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• klarx — klarx is the leading platform for construction equipment rental in Europe, enabling the energy transition currently underway. klarx is revolutionizing the way machines are rented and used, which in turn is enabling the massive expansion of solar energy in Germany. So far, klarx has served over 6.800 customers and has operated more than 330k rentaldays. Through the vast network of 4.900 supplier stations and our logistic centres, we can ensure that machines are travelling less than 50km to the construction site and are always used with the highest utilization rates. After successfully building up the klarxManager software and network business, klarx has launched two logistic centres in Europe and plans to open another 9 logistic centres across Europe within the next three years. klarx has already raised over 23.7 Mio. € from investors like Target Global, Lukasz Gadowski, the Flixbus founders and the B&C Holding.
• Mercanis — Source services smarter and drive automation along your source-to-settle process. Discover how Mercanis enables you to collaborate with best-in-class suppliers across your departments.

Portfolio highlights

• Carsell — Carsell is an automotive company that offers turnkey service solutions for their car. The company supports the entire process of selling used vehicles between individuals and frees them from all the constraints and sources of stress associated with it Carsell was founded by Morgan Petitjean in 2021.
• Electra — Electra is a platform that provides Charging stations Ultrafast for electric vehicles.
• Sharelock — Sharelock is the first shared locks network in the world. They develop, deploy and operate an innovative secured shared lock infrastructure in partnership with city authorities and mobility operators to massively enable active mobility. Based on mobility expertise and proprietary data, they also develop disruptive insurance products.

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• UrbanChain — Consumers, prosumers, and generators are welcome to make their marketplace.

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• Werover — Wind Turbine Blade Health Monitoring System | Werover

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• Werover — Wind Turbine Blade Health Monitoring System | Werover
• FormaStar — FormaStar is a Sports-focused digital ecosystem.
• Innovasion Labs PINC — Next Generation of Energy Storage

Portfolio highlights

• Werover — Wind Turbine Blade Health Monitoring System | Werover
• ForFarming — Smart Agriculture for a Healthy Future
• Plastic Move — Plastic Move engages in the production of bio-based and bio-degradable bioplastics made of waste bread.

Portfolio highlights

• Zonox — Zonox offers customized and adaptive energy-saving solutions to help customers reduce costs and contribute to environmental sustainability.

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• Admi — Admi is a government technology company that helps towns and municipalities develop and operate photovoltaic systems on public lands.
• feld.energy — feld. energy enables farmers to produce sustainable energy without sacrificing agriculture.Agri-PV is a solution that brings benefits to all parties.

Portfolio highlights

• Ucaneo — We Leveraging the magic of the human body to remove CO2 from the air.
• Alteva — Alteva develops battery cells for the decarbonisation of the global transport sector, and focus on high-energy density battery cells with high safety profiles specifically designed for the aviation and heavy-duty transport sectors.
• Radical Dot — Radical Dot technology aims to convert them into critical chemical building blocks via an innovative, ecological, and cost-effective chemical procedure.

Portfolio highlights

• Hgen — Hgen provides affordable green hydrogen for deep decarbonization.
• Heimdal — Thinking big, first, to build the worlds largest most scalable DAC facilities. We operate Bantam, America's largest DAC facility.
• Proper — Proper provides expert property management bookkeeping for property managers, asset managers, and anyone in the world of property. (213 kB)

Portfolio highlights

• Airmee — Airmee provides a new last mile delivery solution. Whether you want to integrate Airmee into your webshop or simply book a local delivery today, we’ve got you covered. Airmee gives customers more – a great deal more – choice and convenience. Items when you want them. Where you want them. In as fast as an hour.
• Holyvolt — Our mission is to provide the world with high-efficiency renewable energy solutions at an affordable cost and with minimal environmental impact.
• MAJORITY — MAJORITY is the first digital financial service dedicated to serving migrants worldwide. For $5 a month, MAJORITY members in the U.S. receive an FDIC-secured account, VISA® debit card, use of more than 55,000 ATMs across North America, remittance and international calling, native language advisors, and access to our network of community meet-upspaces, local discounts and events. With MAJORITY, there are never overdraft fees or minimum balance requirements. MAJORITY was started in Sweden by a diverse team of banking, fintech, payments, and telecom executives serving immigrant communities globally for the last 15 years. MAJORITY’s U.S. headquarters are in Houston, Texas.

Portfolio highlights

• Giza — Actionable AI for decentralized applications.
• Twin — We are building the AI productivity platform for SMB teams to automate complex and repetitive tasks across, as seamlessly as delegating them to smart interns.
• Usual Labs — Usual Labs operates as a decentralized finance(DeFi) protocol.

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

• Nautit — Ecomerce Nautit is devoted exclusively to nautical, marine electronics and water sports. Their horizontal expansion is based on the introduction of new sections always related to the sea, its activities and its products. In Nautit find the best brands of marine electronics, a wide range in nautical accessories and equipment of all kinds of watersports like kite surfing, wakeboarding, water skiing, diving or fishing!They offer personalized service to ensure the satisfaction of their customers and how well trained and experienced staff in the industry to offer the best advice. From Nautit always try to offer the best price in their online catalog and the best deals and promotions in their newsletter, if you find a cheaper product, they take care to make the counter offer!
• Solfy — Solfy is a Marketplace for self-consumption of solar energy.

Portfolio highlights

• Gazelle Wind Power — Modular, scalable, easier to deploy: Introducing Gazelle's unique dynamic mooring system, an evolutionary step-change in the design of floating platforms.
• Asteroid Mining Corporation Ltd — AMC, founded in 2016, is the UK's first space mining enterprise, an aerospace company on a mission to exploit the potential of an off-Earth commercial market. Currently focussed on the prospecting and exploration stages, it ultimately aims to extract, process and utilise the materials embedded within some of the millions of Near Earth and MainBelt Asteroids. We are first and foremost a business. We aim to extract resources from asteroids to boost the Earth's economy and kick start the Space Based Economy as the vast values of some asteroids can be valued in trillions, with the largest asteroids being worth quintillions, while even small asteroids can be hugely valuable. This money will be spent in building ever growing amounts of space infrastructure so that we can eventually allow all humans who desire it to live and work in Space.Our team is currently working in partnership with the Space Robotics Lab at Tohoku University, Japan, developing SCAR-E. These low-cost, ruggedised, walking and climbing robots will be capable of undertaking asteroid, planetary and lunar exploration, alongside mining operations. Designed to withstand exposure to radiation, high accelerations experienced during space launch, and extreme temperatures, SCAR-E will be capable of in-orbit asset maintenance such as spacewalking and extravehicular activity. These unique features will also enable them to function in hostile environments here on Earth, primarily in the fields of nuclear decommissioning, critical infrastructure inspection, mine clearance, and search & rescue operations.

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• Heatio — Heatio provides affordable renewable energy to homeowners.

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• SunRoof — Roof of the future

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• GreenSpur Wind — Time To ACT plc supports the global transition to Net Zero through the development and commercialisation of world-beating clean technologies

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• trawa — The partner for renewable and affordable electricity for businesses. Get electricity directly from solar and windparks with corporate PPAs.

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• Otark GmbH — Otark GmbH specializes in digitalizing green energy trading and is setting new standards in the industry. With a clear focus on neutrality and transparency, Otark is making trading in renewable energy more accessible. The company offers a fully digitalized platform that seamlessly integrates procurement and billing processes. As a result, Otarkenables straightforward and efficient processing of green energy transactions for every company, from industrial groups to SMEs.Otark aims to accelerate the energy transition by making it easier for its customers to access green electricity and simplify the management of their energy contracts through state-of-the-art digital solutions. Otark stands for innovation, neutrality, and reliability.
• Phonedeck — Phonedeck integrates mobile and video calling inside Salesforce. It is the first CTI solution for smartphones that makes it possible to remote control and track calls under the ‘real’ mobile number using regular carrier minutes. Phonedeck helps enterprises to manage and optimize business processes. The results are a large costs saving due tomobilizing sales teams and increasing the productivity.Phonedeck is Alcatel-Lucent and ISV Salesforce partner. In 2012 Phonedeck’s founder Prof. Dr.-Ing. Frank Fitzek was awarded with the Vodafone Innovation Prize. Alcatel-Lucent awarded Phonedeck during its Munich Hackathon in June 2014 as Innovative Leader in IMS. In January 2015 Phonedeck has won Disruptive Innovator 2015 award at Enterprise Mobility Management Forum.Phonedeck´s supporters are business angels, the IBB bank of Berlin and the venture capital fund Atlantic Internet.

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• Invinity Energy Systems Plc — See what makes Invinity the world's leading manufacturer of utility-grade energy storage - safe, economical & proven vanadium flow batteries.

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• MARCLEY — MARCLEY provides a system that enables multi-family building apartment owners to utilize solar energy on their roofs without any financial commitment or additional effort. The generated green power is sold at a cheaper cost than the local basic utility.

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• Renew Risk — Renew Risk offers science-driven risk analytics and products to secure renewable energy infrastructure and support the energy transition.

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• Qkera — We develop drop-in solutions improving battery technologies and advancing future energy storage.

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• Qkera — We develop drop-in solutions improving battery technologies and advancing future energy storage.

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• Qkera — We develop drop-in solutions improving battery technologies and advancing future energy storage.

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• ALVA Energie — Alva delivers turnkey solar systems with integrated energy, heating, and e-mobility for buildings

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• feld.energy — feld. energy enables farmers to produce sustainable energy without sacrificing agriculture.Agri-PV is a solution that brings benefits to all parties.
• ALVA Energie — Alva delivers turnkey solar systems with integrated energy, heating, and e-mobility for buildings

Portfolio highlights

• Fibersail — “If you cannot measure it, you cannot improve it” (William Kelvin)Fibersail develops a shape sensing system based on FBG fiber optic research and development to monitor and analyze wind turbine blades in terms of shape, condition, and behavior. The real-time information provided by our system will help wind turbine operators maximize performanceand availability while preventing failures and minimizing maintenance costs from their assets.Our unique solution and approach with fiber optic sensors make it possible for a very easy and simple integration along the entire length of any critical structure ensuring the monitoring of its precise shape and behavior.Fibersail - Shaping the structures of tomorrow.

Portfolio highlights

• Cycle — Cycle was founded with the mission of building innovative ultrafast laser technology for science and industry that excels through performance and reliability in application.A versatile team, backed with decades of expertise in laser technology and system integration, works closely together with applicants to plan and install solutions foractive environments. Cycle's team offers comprehensive consulting, service and support to realize the best match for your requirements.
• METALSALE — Metalsale builds a digital trading platform that allows non-ferrous metal scrap to be traded easily, lucratively and safely. They are a team with many years of experience in recycling and technology companies and know the problems that need to be solved.

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• Amperecloud — ampere.cloud is Renewables & Environment company