Top 50 Renewable Energy Angel Investors in Germany (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

• 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

• 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

• 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

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

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

• 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

• 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

• 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

• 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

• 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

• 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

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

Portfolio highlights

• awamo — awamo offers a mobile, biometric core banking system (SaaS) to microfinance institutions in sub-Saharan Africa. It is affordable, easy-to-use, and platform independent.Using this platform 300+ institutions serving 450,000+ consumers are being connected. Going forward, they will be able to additionally sell partner products & services,generating additional revenue and fostering local economic growth. The market awamo serves accounts for more than 600m individuals in sub-Saharan Africa – only considering awamo’s core services. In awamo's target markets, there are already more than 16,000 MFIs operational with more than 210,000 staff serving 53m+ consumers. Besides, the microfinance sector grows at >10% p.a. and Africa’s population is about to more than double to 2.4bn people until 2050. Currently, Awamo serves 300+ institutions with 450,000+ consumers in Uganda and Kenya. Month-over-month more than 150,000+ transactions are being processed, moving more than 7m EUR through the platform.
• 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

• 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

• Along AI — Join our waitlist and try it first!
• 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

• Gixel — Creating breakthrough AR display technology for AI glasses and spatial computing.
• YGO.AI — YGO enables travel companies to grow faster and run leaner by turning existing platforms into fully AI-powered booking ecosystems.
• 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

• Gixel — Creating breakthrough AR display technology for AI glasses and spatial computing.
• YGO.AI — YGO enables travel companies to grow faster and run leaner by turning existing platforms into fully AI-powered booking ecosystems.
• 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.

Portfolio highlights

• GrabrFi — GrabrFi provides access to US banking and all of its resources and possibilities and finances, life to the next level.
• Enginy — Instantly aggregate real-time B2B data from 30+ sources and enrichment tools, and scale personalised outreach using our AI sales agent.
• Imperia — Supply Chain Planning: demand, production and purchasing software. Reduce inventory, improve productivity and service levels.

Portfolio highlights

• 5Mins — 5Mins is the new microlearning platform that helps your employees build in-demand skills fast with AI-powered personalisation and advanced gamification.
• Vetic — Vetic Pet Clinic provides human-grade pet healthcare across 65 clinics & 11 cities in India. Pet grooming, consultation, pet surgeries, pet supplies at Vetic.
• Sunhero — Sunhero delivers custom-built solar panel solutions. Sunhero offers consumers a hassle-free method of installing customised photovoltaic solar systems on their homes, be that either purchasing outright or renting for a 20 year period.

Portfolio highlights

• Agriportance — Agriportance is a digital platform that connects biomethane producers and mineral oil companies.

Portfolio highlights

• Amperecloud — With Amperecloud, you can monitor and manage your entire renewable energy portfolio in real-time, access new revenue streams through peer-to-peer trading and grid services, and reduce your carbon footprint and operational costs. Amperecloud is the operating system for renewables, empowering you to harness the power of clean energy with ease andconfidence.

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.

Portfolio highlights

• Zahnheld — Zahnheld is focusing on dental care that makes sense, natural cosmetic toothpaste, and toothbrushes that are worth their price.
• Andenkraft — Andenkraft represents a new connection between enjoyment, origin, and responsibility, uniting the pleasure of conscious consumption with a deep respect for where products come from and a genuine commitment to sustainable and ethical practices.
• DARV studios — DARV studios has designs and manufactures purse, wallet, laptop, and mobile and tablet pouch and accessories.

Portfolio highlights

• 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

• Kapu — Your favorite supermarket on every street.
• 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.
• 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

• Gixel — Creating breakthrough AR display technology for AI glasses and spatial computing.
• Minitap — Minitap is an AI-driven mobile development company that assists with monitoring mobile devices.
• 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.

Portfolio highlights

• KONUX — KONUX combines Machine Learning algorithms and IoT to deliver software-as-a-service solutions for operation, monitoring, and maintenance process automation
• SINN Power — SINN Power develops innovative wave energy technology to supply people worldwide with clean and reliable energy from ocean waves.

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.

Portfolio highlights

• Amperecloud — With Amperecloud, you can monitor and manage your entire renewable energy portfolio in real-time, access new revenue streams through peer-to-peer trading and grid services, and reduce your carbon footprint and operational costs. Amperecloud is the operating system for renewables, empowering you to harness the power of clean energy with ease andconfidence.

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

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

Portfolio highlights

• Admi — Admi is a government technology company that helps towns and municipalities develop and operate photovoltaic systems on public lands.
• Aurora Health — Aurora Health has develops digital technologies to improve mental health care for clients and practitioners.
• Mobile Healthcare Solutions — At-Home Wellness Tracker

Portfolio highlights

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

Portfolio highlights

• Stackgini — Softwaregini provides an enterprise SaaS platform that simplifies the software selection process for businesses by bringing together buyers and sellers on one platform. Our fully integrated workflows help our clients from requirements engineering until the decision. Softwaregini uses AI and community data to automate and improve the selectionprocess, saving time, reducing costs, and fostering a collaborative ecosystem for all stakeholders. Find more information on softwaregini.com
• Planted Green — Planted Green plants mixed forests to compensate for CO2 emissions.

Portfolio highlights

• Planted Green — Planted Green plants mixed forests to compensate for CO2 emissions.

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

• HyperHeat — HyperHeat is building a cutting-edge, all-electric heating solution designed to reach temperatures of up to 2,000°C. Using renewable electricity HyperHeat is providing an efficient alternative to fossil fuel combustion. With an efficiency rate of up to 98%, HyperHeat is ideal for retrofitting industrial processes, enabling significant CO2reductions across industries like steel, cement, and chemicals. The scalable technology offers a cost-efficient approach to decarbonizing thermal processes, with a potential to reduce global CO2 emissions by over 4.5 gigatons annually.

Portfolio highlights

• 1Komma5° — 1KOMMA5° is a global decarbonisation energy company focusing on intelligent energy solutions and promoting a CO2-neutral lifestyle. They are a ClimateTech startup focused on CO2-neutral energy, heating, and mobility. The company functions at approximately 80 sites across 7 global markets, providing a comprehensive range of smart, integrated energysolutions including photovoltaics, energy storage, heat pumps, and electric vehicle charging stations.
• ChargePoint — ChargePoint is the world's largest network of electric vehicle (EV) charging stations in the US, Europe, Australia. Join the EV revolution for a greener tomorrow!

Portfolio highlights

• ecoLocked — ecoLocked is turning buildings into carbon sinks! We convert captured carbon from local biomass residues into functional, carbon-negative construction materials. Our products permanently store CO2 in the built environment, reduce the need for fossil raw materials, and deliver targeted functionalities such as thermal insulation, durability, orcuring time reduction.  Thereby, we combine carbon storage and utilization and create a self-sustaining CDR business case
• Cling Systems — Connecting the battery ecosystem to ensure batteries are reused, repurposed and recycled.
• 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

• CodeWords — CodeWords is a technology startup working on AI systems for workflow automation. Their platform CodeWords lets anyone create automations and AI workflows by chatting with AI. Agemo's technology is designed to build code-based workflows and systems that can autonomously reason through software.
• Repodo — Repodo is an AI-native authorised audit firm.
• fonio.ai — Founded in Vienna in 2024, fonio.ai provides AI-powered phone assistants that automate customer communication 24/7. The platform answers calls, forwards inquiries, books appointments, and integrates with CRM and ERP systems, while every interaction is transcribed and can be stored, shared, or connected to existing tools.

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

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

Portfolio highlights

• YGO.AI — YGO enables travel companies to grow faster and run leaner by turning existing platforms into fully AI-powered booking ecosystems.
• Nox Mobility — Nox Mobility is a transportation company that operates sleeper trains and private cabins for travel and tourism sectors.
• YOUTH — Full health check-up in less than 2 minutes!

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

• 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.
• NetBird — Wiretrustee is an open-source VPN platform built on top of WireGuard® making it easy to create secure private networks for your organization or home. It requires zero configuration effort leaving behind the hassle of opening ports, complex firewall rules, VPN gateways, and so forth.
• Widgetbook — Widgetbook is an open source tool for organizing widgets in Flutter. It accelerates UI development and improves the collaboration between developers, designers and clients.

Portfolio highlights

• Xaver — Xaver enables Financial Institutions to close Europe’s pension gap. By offering an advanced AI-driven B2B platform for life insurance and private pension sales, Xaver enhances the operational and sales efficiency of banks, insurers, and brokers by up to 65% and introduces a new era of white-labeled private pension products.With a leadership teamof experienced industry veterans - Max Bachem, Ole Breulmann, and Dr. Björn Holste - and backing from leading VC funds and a prominent group of former financial institution executives, fintech pioneers, and unicorn founders, Xaver is dedicated to improving the pension situation of Europeans through their B2B offering.
• Agent F — The first ERP that adapts to your business and compounds with it. One system for finance, operations and people, answering from live data in seconds.
• Melotech — We create art with technology for humans to enjoy. Within just one year, our work has been heard, seen and loved for more than 2 billion minutes in every corner of the planet.

Portfolio highlights

• 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.

Portfolio highlights

• OCELL — OCELL is a Munich-based climate-tech startup that develops local climate projects that are transparent, measurable, and effective. Our mission is to unlock the full potential of forests and make a significant contribution to climate mitigation. To achieve this, we use aerial photographs, data from various sources, and artificial intelligence tocreate ‘digital twins’ of forests. These provide valuable insights into forest growth, current carbon storage capacity, and other metrics, and enable us to predict optimal forest management strategies. With our state-of-the-art technology and unwavering commitment to data transparency, we ensure the effectiveness of our solutions. Currently, OCELL manages over 250,000 hectares of sustainable forest land in Europe, North America, and South America.
• Predium — Every building owner, real estate portfolio holder, developer and investor faces the challenge that data on buildings, energy consumption, CO2 emissions, tenants and climate risks is either not available or scattered in different places. They also lack the tools to act on their ambitions to become sustainable while remaining profitable.Predium’send-to-end platform empowers you to efficiently manage key building data and cost-effectively identify renovation opportunities. Our proprietary technology helps you to:1) Automate data collection and monitor portfolio-wide ESG data in one dashboard 2) Prioritize renovation opportunities and identify subsidy and financial incentives 3) Track and communicate progress according to industry standards
• Endra — Endra is a purpose-built platform for modern MEP engineering. Generate 3D models and drawings, sync with Revit and enjoy coordinated design workflows.