Top 50 Renewable Energy Angel Investors in Europe (September 2026)

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

• 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.
• zymtrace — Powering Efficient AI: A continuous profiling platform for CPU and GPU workloads, that provides actionable insights to optimize perf & debug faster
• Borobotics — Our autonomous drilling robot helps homeowners to switch from grey energy sources to geothermal heating systems. With an earth-worm-like drilling robot for geothermal probes, Borobotics accelerate the heat transition for the net zero goals.

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.

Portfolio highlights

• Granola — The AI notepad for back-to-back meetings. Notes, actions and memory. Without a meeting bot.
• 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

• 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.
• DEALCIRCLE — DealCircle is a digital M&A solution and partner of hundreds of M&A advisors. We support in identifying buyers and addressing the market. This provides investors access to a comprehensive deal flow of relevant projects.

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!
• Banktrack — Banktrack employs a banking API with read-only access that has been approved by the Bank of Spain. The organization use the most secure authentication provider available (Auth0.com).
• Solfy — Solfy is a Marketplace for self-consumption of solar energy.

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 — 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

• 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

• Fibionic — Fibionic: die Revolution in der Leichtbautechnologie. Unser patentiertes Verfahren mach Ihr Produkt leichter, stabiler & nachhaltiger. Kostenlos beraten lassen.
• 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 — We are doing some work on our site. Please come back later. We'll be up and running in no time.

Portfolio highlights

• Enpal — Kostenlose Planung von Solaranlagen. Gewinnbringende & schnelle Umsetzung von Photovoltaikanlagen inklusive professionelle Installation & Netzanschluss. Zum Festpreis!
• Bardeen — Bardeen is an automation app to replace your repetitive tasks with a single shortcut and control your web apps from anywhere. Explore our integrations with your favorite apps and hundreds of pre-built playbooks that help you stay in the flow.
• 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

• Scripe — Scripe combines content strategy and insights from high-converting LinkedIn posts to help your sales & marketing teams create content that turns consumers into customers.
• Kickscale — The AI-powered conversation intelligence platform records, transcribes, and analyzes meetings to provide tailored training recommendations to every sales rep
• Planted Green — Planted is a leading Sustainability as a Service provider that offers comprehensive support to service based companies in their ESG management on the way to Net Zero. With state-of-the-art technology, in-depth expert support and scientific standards, Planted helps companies with their double materiality analysis, carbon footprinting,decarbonisation, CSRD reporting and biodiversity protection

Portfolio highlights

• RootWave — RootWave is an electronics company that develops tools that kill weeds it enables farmers to control weeds on their farm. Its technology is an alternative substitute for herbicides and other weed control chemicals. The company was founded in 2012 and headquartered in Warwickshire, United Kingdom.
• 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

• Entrix — Entrix is an optimisation and trading platform for grid-scale battery storage that accelerates the transition towards a clean energy future. Our mission is to enable the most effective use of green energy and to ensure the reliability of the future energy system. We provide state-of-the-art technology and services to both asset owners and potentialinvestors across the globe.
• 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

• 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

• 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

• Bourn — Bourn's technology is designed to automate cash flow management, offering SMEs fast access to capital.
• Alfa AI — Alfa AI is a recruitment technology company specializing in AI-driven hiring solutions.
• Emblematic — The first AI-driven Agentic Automation platform, designed to fully automate and enhance the accuracy of Finance Operations, including Bookkeeping, IFRS/GAAP Compliance, Reconciliations, and more.

Portfolio highlights

• encentive — encentive provides modular building to grid and consumer VPP solutions as a service for existing systems and infrastructure. We are the expert for cost efficient, scalable and fully automated micro-flexibility services!

Portfolio highlights

• Eternal Power — Eternal Power is a globally integrated mass production of green hydrogen and derivatives such as sustainable fuels.

Portfolio highlights

• Regalamos — El marketplace de regalos gratuitos. Dale una segunda vida a tus cosas.
• 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.

Portfolio highlights

• Alfa AI — Alfa AI is a recruitment technology company specializing in AI-driven hiring solutions.
• TerraSpark — TerraSpark Energy specializing in software solutions for renewable energy asset management. The product, TerraSpark Hub, provides comprehensive oversight of commercial and technical data for green energy assets like solar and wind projects.
• Recupere Metals — Recupere Metals focused on recycling copper scrap into high-quality electrical wires. It uses a patented mechanical process enhanced by AI to boost conductivity from impure scrap, bypassing energy-intensive smelting.

Portfolio highlights

• Kodesage — Kodesage captures your company's collective knowledge to help understand and modernize legacy code
• BLOCKS — BLOCKS deploys an AI agent to monitor cloud usage patterns continuously. The agent identifies wasteful resource allocations and applies real-time optimizations autonomously. It differs from dashboards by taking direct action instead of just alerting users.
• Helical — The full power of DNA & (m)RNA Bio Foundation Models in one open-core platform. Accelerate Drug Discovery with AI.

Portfolio highlights

• Bindwell — Making new pesticides with AI
• Exla — Build the world's best proactive SRE agent to fix bugs in prod
• Revision Dojo — Thousands of practice questions, study notes, and flashcards, all in one place. Supercharged with Jojo AI.

Portfolio highlights

• Gilion — Gilion (Formerly known as Ark Kapital) is creating custom growth loans that helps founders protect equity. Because founders who remain in control, are hard to overtake.
• 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

• 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.
• Celsio — Celsio operates as a next-generation electricity provider transforming power market volatility into savings for heat-intensive industries. The company integrates electric heating assets (Power-to-Heat) and thermal storage into existing fossil-fueled industrial infrastructure without disrupting manufacturing processes. Utilizing a proprietarycross-market AI algorithm, Celsio forecasts trading opportunities across short-term electricity and balancing power markets

Portfolio highlights

• 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

• SKYSEED — Mit Drohnen und Saatpellets
• 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 is a leading Sustainability as a Service provider that offers comprehensive support to service based companies in their ESG management on the way to Net Zero. With state-of-the-art technology, in-depth expert support and scientific standards, Planted helps companies with their double materiality analysis, carbon footprinting,decarbonisation, CSRD reporting and biodiversity protection

Portfolio highlights

• fynk — Create, edit, negotiate and sign contracts quickly with fynk. Give your team back valuable time. Test it now for free!
• Newsrooms.ai — Newsrooms.ai is an AI-powered content production and management platform that enables businesses and news organizations to automate their whole content pipeline—from research and content generation to publishing across many digital channels.
• Donnerstag.ai — We customize reconciliation automation to your ecosystem, so every line item is reconciled in real time.

Portfolio highlights

• Hydro2Move — Hydro2Move pursues its business model by overseeing the nerve centers of the value chain of the nascent hydrogen industry such as production, transport, storage, and distribution.
• Renergia — Renergia specializes in bioenergy, advanced biofuels, and sustainable infrastructure for the energy transition.

Portfolio highlights

• Vixiees — Turn your sales team into a structured system. Automate priorities, manage leads, and multiply your revenue with Vixiees.
• Hirevoice — Hirevoice is a voice AI recruiter that runs structured voice AI interviews with every candidate and gives your team defensible hiring signal. Book a demo.
• MOVEMENTS — Convert your cause into an unstoppable movement. MOVEMENTS offers petitions, community, content and subscriptions to drive change.

Portfolio highlights

• AXO — AXO Track upgrades rail assets with retrofit predictive maintenance systems to reduce costs, increase safety, and boost productivity.
• Co-Power — Energiekosten durch Batteriespeicher senken - ohne eigene Investition, operativen Aufwand oder Risiko.
• hellgrün — hellgrün is a green-tech company that operates PV systems and helps to build simple, smart, sustainable green energy.

Portfolio highlights

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

Portfolio highlights

• Sunvigo — Sunvigo provides you with cheap solar power from your roof and real green power from the grid.

Portfolio highlights

• Nova Pangaea Technologies — NPT is a cleantech company that has developed a revolutionary process technology called REFNOVA. REFNOVA allows customers to converts non-food plant residues into sustainable products such as biochar, activated carbon, biofuel, biopolymers and biochemicals. Our products help customers replace fossil based products and enable decarbonisation.

Portfolio highlights

• 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.

Portfolio highlights

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

Portfolio highlights

• SECJUR — Secjur provides a platform for automated compliance using AI. The startup's technology streamlines procedures in the Digital Compliance Office for areas including data security, anti-money laundering, and whistleblowing.
• Ivy — We are building a global API for instant bank payments
• cleverly.de — cleverly.de is an onlineplatform which provides online coaching and tutorial classes.

Portfolio highlights

• Arogga — Arogga App is the first Bangladeshi app that brought healthcare system to your doorstep. Easy and efficient. With a click of a button, upload your prescription and we will ensure safe delivery of your medicine at earliest possible time.
• GoZayaan — Welcome to GoZayaan, the ultimate online platform for next generation traveling! We aim to put you in charge of your travel plan. Your dream trip is just a few clicks away, with GoZayaan!
• Frequenz — Frequenz empowers developers with innovative tools to orchestrate Decentralized Energy Resources (DERs) efficiently. Join us revolutionizing the way the world manages power.

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

• Conektto — Design, Build & Test API in minutes. Conektto is the industry's first API SDLC platform that intelligently generates artifacts.
• Gheorg — Around 1 million children in Australia have diagnosable anxiety. Two-thirds of them will never get the help they need. Gheorg is on a mission to change that. We're aiming to reduce childhood anxiety and our new app helps parents and children at home. Sign up to get the app on our website.
• Hooke Bio — Hooke Bio is a new Pharmaceutical company operating in the preclinical to early stages of drug discovery. It draws its strength from the close co-operation it has between its biologists and engineers. The engineers design, patent and test new microfluidic technology: the scientists apply the technology to finding new therapeutics.

Portfolio highlights

• Allone — Allone develops a free alarm application that aims to create a safer environment for all. The application enables its users to let specific people follow their movements and alert people nearby or their close ones, if there is an emergency.Allone allows its users to create different groups for personalized alarms. It also provides preselectedcontacts the ability to see its users’ exact location and enables them to get involved and help other Allone users.Allone was launched in 2015 by Anders Paulson and is based in Sweden.
• Epishine — Epishine's goal is to be able to provide the world's most scalable, resource efficient, and affordable solar modules. Epishine sells light energy harvesting modules to manufacturers of wireless products. The modules are used to harvest light in any lighting conditions, turning light into usable power.
• Lightdash — Connect your dbt project to Lightdash and allow everyone to answer their own data questions. Built for analysts and the modern data stack.

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.

Portfolio highlights

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

Portfolio highlights

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

Portfolio highlights

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

Portfolio highlights

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

Portfolio highlights

• 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

• avoltra — Avoltra aims to position itself as an "intelligent energy purchasing solution" by leveraging advanced technology and data-driven insights to optimize energy procurement.
• Rulemapping Group — Rulemapping Group is a rule-based AI platform that enables a level of end-to-end automation for rule-based processes. Automated decision-making solutions for digital legislation, administrative operations, legal procedures, and regulatory compliance.
• Atmen — Atmen, formerly known as Point Twelve, automates hydrogen and e-fuels certification, saving you up to 90% time in the process.

Portfolio highlights

• avoltra — Avoltra aims to position itself as an "intelligent energy purchasing solution" by leveraging advanced technology and data-driven insights to optimize energy procurement.
• Atmen — Atmen, formerly known as Point Twelve, automates hydrogen and e-fuels certification, saving you up to 90% time in the process.

Portfolio highlights

• CollectiveCrunch — CollectiveCrunch is an AI leader in the forestry industry. We collect and analyze a wide range of information, including climate, geo and process data, to bring best-in-class forest inventories and accurate carbon storage calculations to our customers. The largest forest owners the Nordics and Baltics are already using using our solution, LindaForest.With Linda Forest, our customers gain actionable insights, leading to improved forest management, informed forest investments and up-to-date carbon storage analytics. Overall, Linda Forest can reduce forest planning costs while increasing accuracy. We are currently focused on the Nordic and Baltic countries but are soon adopting the solution to Northern America, Russia and other forestry markets. Moreover, we are working with insurance companies to apply our expert analytics to new opportunities such as prediction of forest risk.