Top 50 Renewable Energy Angel Investors (July 2026)

Portfolio highlights

• Neatleaf — Sustainable agriculture with optimal yields through data-driven understanding and comprehensive automation for everyone.
• Amca — Amca acquires and develops critical aerospace and defense products and then scales them to deliver what the industry needs next. The company emphasizes rapid prototyping and delivery of new products, aiming to respond promptly to customer needs. Amca is committed to deploying top engineering and manufacturing talent to assist customers in buildingnew products and solving complex problems.
• Terra Industries — Terra Industries develops autonomous security systems and software platforms that support the monitoring and protection of physical assets, infrastructure, and operational environments across land, air, and maritime domains. The company provides unmanned vehicles, autonomous towers, and sensor-based surveillance hardware that collect and transmitdata for continuous situational awareness. Its software layer, built around an integrated operating system, processes sensor inputs, applies artificial intelligence models, and coordinates automated responses to detected events. Terra Industries designs its systems to support functions such as perimeter security, infrastructure monitoring, asset tracking, and threat detection within complex operational settings. The company’s platforms enable operators to manage multiple autonomous devices through a unified interface that supports mission planning, data visualization, and system control. Its technology is used by organizations that require coordinated security, monitoring, and response capabilities for facilities, remote sites, and distributed operations.

Portfolio highlights

• Koloma — Koloma is revolutionizing clean energy by harnessing naturally occurring hydrogen from deep within the Earth.
• TerraPower — Leading innovations in nuclear applications for reactor and storage technology, while advancing methods to transform the fight against cancer.
• Lucy Therapeutics — Lucy Therapeutics, a Boston-based biotech with a unifying mitochondrial platform, is developing small molecule treatments for neurological diseases.

Portfolio highlights

• Exowatt — Modular full-stack renewable energy solutions for commercial and industrial customers.
• Preventive — Preventive mission is to determine whether the newest generation of gene editing technologies can be used safely and responsibly to correct devastating genetic conditions for future children.
• Red Queen Bio — Red Queen Bio works with frontier labs to map AI-enabled biothreats and pre-build medical countermeasures against them.

Portfolio highlights

• Tandem PV — Discover the future of sustainable energy with Tandem PV, a leader in perovskite solar technology and innovative solar energy solutions.
• Wolf Games — Step inside cinematic gaming universes built by Wolf Games, immersive, story-driven experiences that evolve with every player.
• Rock Rabbit — We make the rebate process quick, accurate, and efficient so contractors and homeowners can focus on their projects.

Portfolio highlights

• Battery Pollution — Battery Pollution Technologies is establishing a national circular economy for lithium-ion batteries. Our comprehensive technology encompasses the entire lifecycle, from safe end-of-life management to eco-friendly repurposing and novel chemical recovery of critical battery materials.
• Dumaresq Solar Farm — Large Scale Solar Farm & Battery Storage Development based in northern NSW, Australia

Portfolio highlights

• Centivax — Centivax is a healthcare-based agency that provides biotechnology, pharmaceutical, medical device manufacturing, and therapeutic services.
• The Interaction Company of California — The proactive AI assistant in your iMessage, WhatsApp, and more. Texts like a human, really knows you, and integrates with your life in dozens of ways.
• SendCutSend — SendCutSend is an online custom manufacturing service specializing in rapid, high-precision sheet metal fabrication and CNC machining. Customers simply upload their digital design files to get professional-grade parts manufactured and shipped to their door, with turnaround times as fast as 24 hours.

Portfolio highlights

• Jack & Jill AI — Jack helps candidates find the perfect job and Jill helps companies find the perfect candidate.
• SimpleStudy — Learn smarter with revision notes, past papers, quizzes, and expert tools for major Irish academic exams. Join SimpleStudy Ireland and boost your grades today.
• Jentic — One integration, thousands of APIs and workflows. Connect your AI agents to real APIs with secure execution and credential management.

Portfolio highlights

• Agros — Agros exist to make farming economically viable and environmentally sustainable. The company provides farmers with carbon-reducing and income-increasing products and services, from input to market. Their unique ecosystem approach aggregates different low-carbon technologies, bundled with affordable finance, insurance, advisory and market access.Agros’ mission is to double the income of millions of farmers while reducing 100 megatons of annual carbon emissions.
• Aqwire —
• Lhoopa — Making homeownership achievable for every Filipino family.

Portfolio highlights

• TransCrypts — We all have that file box where we throw all our important documents. Our goal at TransCrypts is to make that box digital and have all the documents secured through the blockchain. We currently offer industry leading privacy and security standards on our file storage and sharing platform and have solutions for individuals all the way to enterprises.
• AtomBeam — AtomBeam is a software company that is developing an artificial intelligence driven ecosystem of algorithms and computational paradigms that will transform the way data is transferred and stored, dramatically reducing the size of data transferred but without adding latency, using only modest computing power. This technology has profound benefitsfor a very large number of applications, in particular IoT and edge computing. The technology's advantages are unmatched and give it a wide range of uses: a) it can act on very small packet sizes, enabling it to stream data, b) computational latency is near zero, c) it is not sensitive to data errors, and c) it provides random file access. It has the potential to be virtually universal, especially in IoT.
• Pops Diabetes Care — If you are an employer, caregiver, or just someone who wants an easy diabetes management system, Click here to learn how we can help!

Portfolio highlights

• Praan — Praan builds the world's most advanced air purification technologies for commercial and industrial applications.

Portfolio highlights

• Onsite Pro — Join the green workforce America needs now
• Cache — Biomolecules are the next bits of the 21st century. So we're developing the first wet operating system for storing, accessing, and computing biomolecules at scale to make them widely accessible and useful. We're enabling the storage and access to the whole data universe—digital and biological—forever so that we don't have to deleteor dispose of anything ever again.
• Cambium — Saving wood to save the planet. By revolutionizing supply chains, we introduce the world's first carbon smart material.

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

• 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

• 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

• Kavaken — Increase your renewable portfolio IRR by 0.5-3% through better performance analysis and predictive maintenance and availability management.

Portfolio highlights

• Kavaken — Increase your renewable portfolio IRR by 0.5-3% through better performance analysis and predictive maintenance and availability management.

Portfolio highlights

• Notte Group — A family run venture organization mainly focused over investment management and project planning within areas of energy, renewables, farming, agritech!
• AASAN Consultancy — AASAN Consultancy is a management consulting firm providing energy management and engineering services.Its primary focus is on cost reduction, energy consumption analysis, and evaluation, as well as future-oriented planning for the cost-saving strategies for the energy supply. The firm identifies the possibilities to reduce current energy billswithout any impact on the consumer's current quality, volumes, or safety standards.Ratilal M. Bavarva founded the firm in 2018 with its headquarters in Rajkot, Gujarat.
• Habaple Solar Technology Limited — An intertwine solar technology company with a next generation of 2.1 MW powerhouse grid base module system with an annual source of electricity generation. The project will be under the guideline of Ministry of New and Renewable Energy (MNRE), Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH (GIZ), Ministry of Power.

Portfolio highlights

• Praan — Praan builds the world's most advanced air purification technologies for commercial and industrial applications.
• Prevently — Prevently is a website that provides consumers with physician-reviewed health articles, physician-approved health products, health apps, and telemedicine consultations. These services centralize around an online patient profile that integrates data utilizing APIs from multiple personal health tracking devices.

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 — AI Infrastructure optimization platform. Zymtrace profiles GPU & CPU workloads with zero instrumentation to cut costs and boost performance
• Borobotics —

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

• Heliogen — Heliogen is a renewable energy technology company unlocking the power of sunlight to replace fossil fuels.
• Sienza Energy — Sienza Energy is developing a radical new approach to design and manufacture batteries. The company’s revolutionary strategy is based on a 3D nanotechnology electrode structure that takes advantage of advances in multiple fields over the last decade, providing an approach to battery design that is unique in the industry. By combining these advancesin an innovative way, Sienza can drastically improve the batteries’ energy and power densities — all with the goal of simultaneously reducing the overall battery costs. With this new approach, Sienza Energy can provide even more capability in a range of products, from smart devices to electric vehicles.
• Alyssum Therapeutics — Alyssum Therapeutics is a biotechnology company that focuses on developing next-generation immunotherapies to modulate B cells.

Portfolio highlights

• Mast Reforestation — No-cost reforestation for post-wildfire burned acreage for landowners and foresters, funded by carbon removal credits.
• Sugarlogix — A precise reflection of human milk to provide the best nutrition for babies
• Mast Reforestation — No-cost reforestation for post-wildfire burned acreage for landowners and foresters, funded by carbon removal credits.

Portfolio highlights

• Amperon — Our AI-powered demand forecasts help companies manage risk and navigate volatile energy markets.
• SMASHsolar — SMASHsolar breaks down barriers to solar for homeowners and contractors. The biggest barriers to solar adoption are cost and complexity. We have developed a simple, snap-together solar module that installs 2x faster than conventional solar, significantly reducing labor skill, labor cost and increasing crew throughput, which result in lowerinstallation costs. Since the SMASH system is easy to expand, homeowners can buy a what they need today and upgrade when they want more power.
• Distributed Energy Pte Ltd — Distributed Energy is a development and aggregation platform that connects renewable projects with funders.They are experienced platform aggregators who have come together to enable renewable energy projects in the developing world.The Distributed Energy platform reviews, screens and lists fundable projects on their marketplace. Investors canexpress interest to invest in credible opportunities. Their smart contracts and blockchain produce a robust link between parties, automating payments. They also provide ongoing reporting on performance of the assets.

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

• Tesla — Tesla is accelerating the world's transition to sustainable energy with electric cars, solar and integrated renewable energy solutions for homes and businesses.
• Alta Motors — Alta Motors designs and manufactures the most advanced electric vehicle technology on the planet. With our first product, The Redshift, we are creating a motorcycle that is faster and easier than anything else out there. An electric motor means smooth power delivery, instant throttle response and flat, endless torque.
• Mast Reforestation — No-cost reforestation for post-wildfire burned acreage for landowners and foresters, funded by carbon removal credits.

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

• Ackcio — Ackcio builds real-time, reliable, wireless, monitoring solutions for industrial applications.
• PixCap — PixCap - Web-based editor. Easily create 3D designs. We ship with thousands of assets, animations, poses, and characters to help you quickly get started. Best 3D software with no downloads for designers.
• VFlow Tech — VFlowTech is a Singapore based company that aims to produce the world's best Vanadium Redox Flow Batteries to the power the sustainable future with pure renewable energy.

Portfolio highlights

• MFG.com — MFG brings buyers and suppliers together by connecting buyers custom part requests with the right manufacturer. Register now for free!
• Silkhaus — Silkhaus makes living comfortable and convenient through 24/7 mobile support and a digital concierge.
• Pivot — Pivot operates as a fintech company.

Portfolio highlights

• Giza — Streamline blockchain complexity through autonomous agents.
• Twin — Agentic AI, made actionable.
• Usual — Usual Labs operates as a decentralized finance(DeFi) protocol.

Portfolio highlights

• Baseten — Baseten is the ML Application Builder for data science teams. Ship full-stack apps in minutes. No frontend, backend, or infrastructure knowledge required.
• Craftwork — Craftwork is a modern general contracting company that uses technology to simplify repair and renovation projects for homeowners.
• Mainframe — Mainframe is a technology company pioneering the future of human-computer interaction through AI-driven tools. The company’s mission is to redefine productivity and workflow automation by creating intuitive platforms that bridge the gap between humans and intelligent agents.Mainframe’s debut product, Cobot, is a generative AI assistant thatanticipates user needs, streamlines tasks, and transforms the way individuals and teams interact with technology. Designed to feel more like collaborating with a human than using an app, Cobot empowers users to focus on impactful work while AI handles the rest.Founded in 2024, Mainframe is supported by top-tier investors and built by a distributed team of industry-leading talent from across the U.S., Canada, and Europe. Mainframe’s vision is to create seamless, intelligent software that reshapes how people work and interact with computers in the 21st century.

Portfolio highlights

• XBOW — XBOW operates autonomously, carrying out commands and analyzing the results to achieve higher-level objectives.
• Julius AI — Julius is a powerful AI data analyst that helps you analyze and visualize your data. Chat with your data, create graphs, build forecasting models, and more.
• Artificial Intelligence Underwriting Company — AIUC certifies and insures AI agents to unlock secure adoption.

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.

Portfolio highlights

• AutoSled — Autosled is a marketplace for vehicle shippers and transporters. Easily manage shipments and payments to optimize your transport process. Get started today...
• Sonomotion — Sonomotion is a medical device manufacturing company that specializes in providing medical solutions for kidney stones disease. The company's stone repositioning solution is currently in clinical trials and its second-generation stone breaking technology is in development.Sonomotion was founded in 2014 and headquartered in South SanFrancisco, California.
• Solarcycle — We offer solar asset owners a low-cost, eco-friendly, comprehensive process for retiring solar panels and repurposing them for new uses.

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

• KhiladiPro — KhiladiPro a sports technology startup using artificial intelligence to assess and support young athletes.
• Koinbasket — KoinBasket lets you invest in diversified cryptocurrency portfolios and indexes with Bitcoin, Ethereum, Altcoins and DeFi tokens on Binance, Coinbase and Huobi.
• Intents Mobi — Mobile analytics, Logistics, Transportation, Fleet Management, Data Analytics

Portfolio highlights

• Ukhi — Ukhi is a material science company which manufactures green solution to plastics. We make biodegradable & compostable bioplastic granules using agri waste for shopping bags, garbage bags
• Paymart India — Paymart India is a Merchants-enabled cash withdrawal platform .
• AdvantageClub.ai — Advantage Club provides an AI-driven platform intended for driving employee engagement. It delivers programs that connect and benefit both the brands and an organization's clients/employees. The company intends to provide an end-to-end solution to facilitate meaningful client and employee engagement through exclusive privileges andrewards provided by its brand partners.

Portfolio highlights

• PHYSEE Technologies — We envision energy-neutral buildings, designed for well-being. We develop solar, sensor and coating technologies that activate glass for added value.

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

• Arcadia — Arcadia unlocks access to global utility data. Our technology powers the next generation of climate solutions, giving anyone the tools to electrify and decarbonize.

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.
• 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.
• CoCooking — CoCooking uses food and cooking to create ample opportunity for dialogue and thought, fostering creativity, diversity, and well-being of individuals and communities.

Portfolio highlights

• 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

• Cardenxe Sotol — Artisanal Small Batch 100% Sotol Spirit Cardenxe Sotol is a terroir-inspired premium craft spirit, distilled from the heart of the Dasylirion plant, in North of Mexico - where it holds a Denomination of Origin. Every label (Desierto and Sierra) honors a different environment in which the plants used to distill grew.
• Terraformation — Terraformation creates partnerships to scale reforestation with hardware, software, and knowledge based solutions.
• Rebellyous Foods — Rebellyous Foods makes crispy, juicy, 100% plant-based nuggets. Your guests will love the taste. Your team will love the simplicity. Get Rebellyous with us!

Portfolio highlights

• Skrap — Skrap is an on-demand mobile marketplace for skip hire and other waste collection services.
• Hyphen SCS — Find and rent verified warehouses across 992+ cities in India. Compare 65,000+ listings on Hyphen SCS.
• Uncovr — Uncovr is an AI-powered surgical intelligence and documentation platform that automatically transforms operating room videos into structured clinical reports and billing codes.

Portfolio highlights

• Vendia — Vendia unifies all enterprise data to power secure, AI-driven outcomes with real-time control, centralized governance, and seamless data harmonization.
• Heliogen — Heliogen is a renewable energy technology company unlocking the power of sunlight to replace fossil fuels.
• AssetPlus — AssetPlus focuses on offering digital-first solutions to financial advisors and mutual fund distributors.

Portfolio highlights

• Arcadia — Arcadia unlocks access to global utility data. Our technology powers the next generation of climate solutions, giving anyone the tools to electrify and decarbonize.

Portfolio highlights

• Patch — We make carbon removal as simple as writing a few lines of code. Build sustainable products with ease and put your climate goals on autopilot.
• Remora — Carbon capture for semi-trucks
• Glacier — Glacier is the creator of the first affordable, high-performing, and space-efficient AI-enabled robot for recycling.

Portfolio highlights

• Tap Electric — Find and use chargers on our trusted network like Osprey, Fastned, Ionity and Vattenfall. You can also manage your chargers our free software, all in one app.
• NewMotion — Shell Recharge biedt thuisladers, een snellaadnetwerk en een gratis laadpas en app waarmee je bij ruim 300.000 publieke laadpalen in Europa terecht kunt.

Portfolio highlights

• Agnikul — Agnikul is a space tech startup that designs, manufactures, tests, and launch orbital-class rockets for micro and nanosatellites. They currently work out of the National Center for Combustion R&D at IIT-Madras. Rocket scientists, engineers, ex-bankers and space lawyers are a part of their team. This unique blend of people is one of theirbiggest strengths. The company was founded in 2017 and is based in Chennai, Tamil Nadu.
• Log 9 Materials — The spirit of innovation remains the cornerstone of every mission here at Log9. We have failed numerous times in this mission of ours, only to learn from them
• Toffee Ride - Learning App for Classes I - IV — Toffee Ride is a learning App that is singularly focused on helping your child develop a thorough understanding of fundamental concepts.