Top 50 Renewable Energy Angel Investors (August 2026)

Portfolio highlights

• Amca — Amca is building America's new industrial base.
• 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.
• Thor Dynamics — Directed Energy Systems for Counter-Drone Defense

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 on Apple Messages, WhatsApp, Telegram, and more. Texts like a human, really knows you, and integrates with your life in dozens of ways.
• SendCutSend — Online sheet metal fabrication service. Get custom parts delivered in just a few days. Upload STEP or DXF files for instant pricing!

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 is an AI biosecurity company. Think of us as the cybersecurity layer for biology. AI is making it dramatically easier to design powerful new drugs and therapies, which is extraordinary news for medicine. But the same tools are also lowering the barrier for bad actors to engineer dangerous pathogens, and opening up an entirely new category of threats, including viruses designed to evade human immunity.Defense has to keep pace with offense.

Portfolio highlights

• Battery Pollution Technologies — 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

• 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 — The sovereign operating layer for enterprise AI agents. Connect agents to any API with scoped access, runtime credential injection, and full audit. Open, self-hosted, no lock-in.

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

• 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

• Skrap — Skrap is an on-demand mobile marketplace for skip hire and other waste collection services.
• Uncovr — Surgical video is the biggest dark data in medicine. We turn it into operative reports, billing codes, and clinical intelligence automatically
• Structured AI — Construction AI QA/QC software that automatically reviews drawing packages and catches errors, code issues, and coordination clashes before they reach the field.

Portfolio highlights

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

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 Technologies is a software company building two AI platforms. Neurpac applies machine learning and advanced mathematics to compact and encrypt data in real time, reducing data volume and latency across transport-agnostic deployments. PCM (Persistent Cognitive Machine) is a geometric AI reasoning engine that reasons from mathematicalstructure rather than pattern-matching, enabling private, low-cost AI that runs behind the enterprise firewall.The company serves enterprise, government, and defense customers, with nearly 600 patents filed, eight active U.S. Department of War programs, an active DARPA engagement, and a Cooperative Research and Development Agreement (CRADA) with NIWC Pacific. Partners include DXC, Oracle, Ericsson, HPE, Viasat, and Trilliant.
• 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

• 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

• Unitary — We detect harmful content with context-aware AI to keep brands and platforms safe online.
• Cordless — Bridging the gap between voice and text
• Fabric — Fabric is an AI-powered workspace and file manager for people and groups.Fabric is a self-organizing multiplayer workspace.

Portfolio highlights

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

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

• 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 — 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

• 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

• 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

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

Portfolio highlights

• June.ai — Discover June, a digital communication hub that replaces your email experience. June creates a new world for your existing email that gives you more control, interactivity and efficiency.
• Panthalassa — We're harnessing renewable energy in the open ocean and delivering it around the world. Engineered in Portland, Oregon.
• Enclave — Enclave is a cybersecurity startup that builds an AI‑native code‑security agent for software development and DevSecOps teams. It analyzes entire codebases to triage scanner noise and surface only the vulnerabilities that truly matter, using cross‑file taint analysis and trust‑boundary mapping. The platform helps engineering teams ship code fasterwhile reducing the risk of exploitable security issues in production. Enclave primarily targets software companies and enterprises that prioritize secure, high‑velocity development.

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

• Pipe — Get up to the full annual value of your booked monthly and quarterly contracts. Scale your business without dilution or debt.
• 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.
• Renaissance Fusion — Renaissance Fusion is a high-temperature superconductor and stellarator company.

Portfolio highlights

• Xeal — Xeal Energy provides the world's most advanced electric vehicle (EV) charging stations, designed especially for commercial, business & apartment use.
• WeaveGrid — WeaveGrid operates with utilities and owners of electric vehicles (EV) to allow and speed up transportation electrification. Using machine learning, optimization, and predictive analytics, the company's software solution solves several EV-grid integration challenges for utilities in a systems-oriented manner; helps integrate renewable energyresources on the grid; and saves utility customers' money on their bills.
• 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

• 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

• 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

• 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 — AQWIRE provides comprehensive real estate solutions, bridging the gap between real estate developers and home buyers globally. The company offers a secure, convenient, and efficient global payment platform, allowing users to pay for properties online with ease. AQWIRE's services include facilitating cross-border payments and ensuring smoothtransactions for brokers and property developers.
• Lhoopa — Making homeownership achievable for every Filipino family.

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

• NewLimit — NewLimit is extending human healthspan by unlocking regenerative potential.
• Rivan Industries — Rivan Industries designs and builds modular, vertically integrated, synthetic fuel plants.
• Flow Engineering — Requirements management, made collaborative

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

• 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

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

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

• 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

• 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

• HiWi — HiWiPay helps Indian exporters receive international payments in 24 hours with lower fees, GST FIRA, and real-time tracking.
• Kidbea — Kidbea is Asia's first Spill-proof & sustainable fashion-tech brand exclusively for kids. We make "certified organic, spill-proof, anti-bacterial, breathable, and softest" kids products. We aim to provide non-toxic sustainable products to the children and a relaxed parenting to every toddler's parent.
• Nava — AI-native cloud infrastructure designed for intelligent workloads. Deploy, scale, and manage your AI systems with autonomous cloud computing.

Portfolio highlights

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

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

• ZunRoof — Buy solar systems at lowest price. Install solar rooftop to get lowest price and best quality solar panel, inverter, structure. Get a Solar Rooftop. Quality and subsidy assured. Reduce Electricity Bill by 100% by Going Solar. Make Money from Sun.

Portfolio highlights

• Ware — Ware deploys autonomous, self-flying drones—combined with machine learning—inside warehouses to automate their inventory tracking. Designed to solve some of the $1.9 trillion warehousing industry’s most pressing issues, Ware’s product helps their customers operate more efficiently. A partner of Skydio and funded by Bloomberg Beta, Ware works withthe world’s largest 3PL’s and global brands to improve their accuracy, workflows, and save money.
• Radiant — Clean. Portable. Safe. Energy
• Replenysh — Replenysh is a set of tools for communities and companies to build circularity in days, not years.

Portfolio highlights

• Praan — Praan builds the world's most advanced air purification technologies for commercial and industrial applications.
• Rooter — Rooter is an Indian game streaming platform that organizes multiple esports tournaments and owns many gaming IPs. It focuses on the massive mobile gaming market of more than 350 mn gamers. Conceptualized in 2016, Rooter was initially set up by Piyush and Dipesh Agarwal to build a strong community of sports fans around the world. But soon afterthe outbreak of COVID-19, Rooter forayed into game streaming to build one of the country’s biggest communities of gamers as well. Rooter has reached out to more than 23 mn users with an average user watching Live game streams daily for 26 mins. Rooter also runs the biggest community program to build the next million game streamers in India. Today Rooter is the biggest streaming platform in India available across Android, iOS, and Desktop.

Portfolio highlights

• Tornado — Digest information from thousands of public filings and your own documents with a versatile AI analyst, plus the reliability of full source attribution.
• Wonder — Introducing a new kind of home dining experience. Currently available in areas of New Jersey.
• Focused Energy — Focused is the leading Laser Fusion company pursuing the most promising path to clean, limitless fusion power... unlocking civilization's next great chapter of growth.

Portfolio highlights

• CompPair — CompPair develops sustainable composites with an ultra-fast repair technology to extend their lifetime and reduce waste.

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.
• Sniffer Robotics — Comprehensive methane emissions detection and quantification, advanced imagery and analytics; Sniffer Robotics provides advanced solutions that benefit the environment.

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

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

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

• Pogo — Unlock the power of your data to earn and save on shopping, finances and more. Download the Pogo app today to start earning and saving cash. 4.9 stars in the App Store.
• Pogo — Unlock the power of your data to earn and save on shopping, finances and more. Download the Pogo app today to start earning and saving cash. 4.9 stars in the App Store.
• Somethings — Somethings connects teens with a Certified Peer Specialist Mentor who provide a safe, trustworthy space to feel their best and combat loneliness.