Top 50 Renewable Energy Angel Investors in United States (May 2026)

Portfolio highlights

• Galvanick — Secure industrial operations. Galvanick's industrial-first Extended Detection & Response (XDR) platform secures industrial systems and networks against cyber attacks.
• Nurdle AI — Get your AI into production Faster, Cheaper & Easier with Nurdle's privacy-safe lookalike data. Trusted by leading brands in gaming and social media.
• Harbinger — Founded by veterans of Canoo and Faraday Future, Harbinger is an automotive company that develops EV platforms optimized for medium-duty trucks and delivery vans.

Portfolio highlights

• Mainspring Energy — Local power generation for the net-zero carbon grid.
• Heineken — Welcome to the global website for Heineken International. Find information about our company, history, brands, strategy and careers here.
• Inflection AI — We are an AI studio creating a personal AI for everyone.

Portfolio highlights

• Heliogen — Heliogen is a renewable energy technology company unlocking the power of sunlight to replace fossil fuels.
• NantKwest —
• 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.

Portfolio highlights

• Rentberry — Find your next home for long-term rent in any country at Rentberry.
• 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

• 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

• Patch Technologies — 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

• 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

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

Portfolio highlights

• ClimateAI — Build climate resilience with accurate insights and actionable recommendations that will give you a competitive edge.
• 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.
• The Happy Home Company — The Happy Home Company is your Personal Home Manager. Managing your home is expensive, complicated, and time consuming. They solve this problem by connect homeowners with an affordable Personal Home Manager, who is supported by powerful technology, and a trusted service 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

• 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

• Xeal — Xeal provides the world's most advanced electric vehicle (EV) charging stations designed for progressive multi-family apartments and businesses. Lead the change with self-managed sustainable amenities.
• 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 — Distributed Energy is a renewable energy platform that matches Investors and Energy Customers. We offer a good IRR and stable returns for our investors.

Portfolio highlights

• Deciml — Deciml is an investment app in India that enables Indians to start investing young by investing the spare change from their online transactions. Download App.
• BankSathi — Earn Money online with Banksathi. Become a financial advisor and make a regular monthly income from home by sharing demat, loans & credit card leads.
• The Yarn Bazaar — The Yarn Bazaar is a Purpose-Led, Modern, Efficient, and Transparent managed Marketplace for yarn that allows yarn buyers and sellers to discover real-time yarn prices, information, and market trends in an instant. Our proprietary processes and flexible unsecured financing options enable yarn sellers to expand their reach and sales whilemaintaining higher margins, and buyers to discover and purchase high-quality yarn at unbeatable prices while reducing raw material and procurement costs, saving time, money, and effort.

Portfolio highlights

• Vendia — Vendia is a multi-cloud serverless development platform that enables customers to share data and code in real-time across multiple clouds and companies.Vendia’s cloud and serverless native platform make that possible by delivering instant scalability and secure data sharing across multiple clouds at a fraction of the cost of traditionalsolutions.It was founded in 2020 and is based in San Francisco, California.
• 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

• KittyCAD — Infrastructure for hardware design tools.
• Echo Labs — Echo Labs is developing the first artificial intelligence capable of human-level transcribing.
• Rain Industries — Every wildfire starts small. Rain contains wildfires within 10 minutes of ignition with autonomous drones.

Portfolio highlights

• Mast Reforestation — No-cost reforestation for post-wildfire burned acreage for landowners and foresters, funded by carbon removal credits.
• 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

• 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

• 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

• Praan — Praan builds the world's most advanced air purification technologies for commercial and industrial applications.
• Styledotme — Mirrar is a Augmented Reality (AR) SaaS platform from Styledotme which is the world's first Real time AR platform for Jewellery shopping.
• Trulymadly.com — Truly Madly is one of the best dating app in India connecting singles across the country. Make friends, meet new people, or find your forever with the Top Dating App Online by Truly Madly.

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

• 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

• 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

• 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 — We connect your teen with a professional, trained 20-28 year old mentor who supports your teen via text and video call whenever they need. Start today.

Portfolio highlights

• Leverage — Answering the Fundamental Question: "Where
• Regent — We build all-electric, passenger-carrying, wing-in-ground-effect vehicles to service coastal routes with technology available today.
• Bequest Finance — Succession and protection for digital assets. Trusts, Wills, Payable on Death, LLCs, tax efficient structuring for Crypto, Documents, Email data, and more.

Portfolio highlights

• Moxion Power — Good Energy. Radical Power.
• Aspen Creek Digital — Aspen Creek Digital is a developer of a renewable Bitcoin mining operator used to catalyze the decarbonization of power generation. The company supports renewable energy-based Bitcoin mining with a strategic mix of behind-the-meter and wholesale resources, resulting in a lower all-in cost of retail power helping users to get on-site renewableenergy and storage projects while also contributing to a greener future.It was founded in 2021 and is headquartered in El Segundo, California.

Portfolio highlights

• Revamp Moto — Electric Bikes built on Modular Utility Platforms that are Connected, Reliable and built to Adapt.
• InfinityBox — InfinityBox is a platform for reusable packaging for plastic bottles.
• hypergro — Hypergro provides the power of user-generated content, craft impactful UGC video ads designed to attract, engage, and convert.These video advertising act as a distinctive, tailored connection between the brand and potential clients, which boosts consumer traffic, app downloads, and revenue for your company.

Portfolio highlights

• Zentail — All in one SaaS platform for Multi-Channel Online Retailers.
• Expedock — Delivering Powerful Data Infrastructure for the Global Supply Chain. Experience AI technology that streamlines all logistics workflows with Expedock.
• Skiff — Everything on Skiff is end-to-end encrypted. Your most sensitive data is private, decentralized, and truly owned by you.

Portfolio highlights

• Chaser — Automate invoice reminders, get paid faster and maintain great customer relationships. Our users get paid 16+ days sooner and save 15+ hours a week on A/R.
• Myprosperity — An all-in-one client portal with innovative digital tools to increase practice efficiencies, scale client engagement and grow revenue.
• Ignition — Engage clients, get paid and run your business on autopilot with Ignition. Create online proposals & automate client payments, all from one place. Learn more.

Portfolio highlights

• Terrajoule — Terrajoule is a solar + storage solution that revolutionizes the cleantech industry.

Portfolio highlights

• Qorax Energy — To find out more about the distribution companies Qorax incubated, please visit: Altech - https://www.altech-rdc.com (DRC), HelloSolar - https://www.hellosolarint.com (Ethiopia), Enersom - https://www.enersom.us (Somalia),

Portfolio highlights

• Kevala — Kevala helps our customers predict and plan for a safer, more effective, and environmentally sustainable grid through our cloud-based data analytic and visualization platform.

Portfolio highlights

• WiseStamp — WiseStamp lets professionals make a beautiful email signature and lets businesses create and manage email signatures for their entire organization
• CivicSolar — With industry-leading service and equipment, Greentech Renewables helps solar contractors install top quality solar PV systems, gain competitive advantage and grow their business.

Portfolio highlights

• i(x) investments — i(x) investments is an entrepreneurial, multi-strategy impact investing platform that actively addresses key areas of human need.Founded in 2015, i(x) investments is a permanently capitalized holding company for investors who want to create long-term economic growth in combination with positive, measurable social impact. i(x) believes theworld's biggest problems are also the biggest market opportunities and invests in the areas of energy, water, food, technology, education, health, housing, access to capital and gender parity. The company uses a multi-strategy investment approach throughout the entire capital structure.

Portfolio highlights

• Mitra Chem — Mitra Chem is innovating and commercializing iron-based cathode materials to enable mass-market electrification for electric vehicles, energy storage solutions and beyond.

Portfolio highlights

• Cambly — Cambly gives English learners on-demand access to native English speaking tutors over video chat.
• Chroma — Sonically driven. Visually enhanced. Technologically evolved. The future sound of entertainment.
• Synapticure — The era of personalized care is finally coming to ALS. Synapticure will give all ALS patients access to the best care while fueling the advancement of personalized treatments for every type of ALS.

Portfolio highlights

• i(x) investments — i(x) investments is an entrepreneurial, multi-strategy impact investing platform that actively addresses key areas of human need.Founded in 2015, i(x) investments is a permanently capitalized holding company for investors who want to create long-term economic growth in combination with positive, measurable social impact. i(x) believes theworld's biggest problems are also the biggest market opportunities and invests in the areas of energy, water, food, technology, education, health, housing, access to capital and gender parity. The company uses a multi-strategy investment approach throughout the entire capital structure.

Portfolio highlights

• Vutility — Technology Webflow Template is a premium Webflow Template for Tech and SaaS startups. It includes all pages you will need to create a top-notch website for your tech startup and have a stellar online presence.
• Coherex Medical — Coherex Medical, Inc. develops medical devices for addressing the structural heart disease conditions. It offers patent foramen ovale (PFO) closure system, which is designed to stimulate tissue in-growth to ensure long-term closure of the PFO. The company was founded as Proximare, Inc. in 2003 and changed its name to Coherex Medical, Inc. in2006. The company is based in Salt Lake City, Utah.

Portfolio highlights

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

Portfolio highlights

• Kornem Energy — Kornem Energy provides energy intelligence and mobile-fuel delivery and diesel delivery on demand for the needs of today, tomorrow, and our future.We are eliminating the traditional fuel supply chain infrastructure using IOT & a compact terminal-to-car logistics aggregation, through service, automation and mobility.This enables us todeliver fuel directly to the customers who can request fuel delivery wherever they are, through our mobile app, while bridging the gap between feedstock aggregation, quality-assurance and end-user accessibility.No more expensive real estate, no more extensive supply chain. Just #FuelToYou
• SymbaSync — SymbaSync™ helps organizations maximize return on employee investment by providing Human Resources Software to source, qualify, and engage employees to populate project teams. SymbaSync’s tools increase employee satisfaction improving employee ownership, engagement, and retention. SymbaSync provides a company with a complete overview of up-to-dateemployee skills, interests, and workplace preferences.
• Tactii — We do rapid prototyping on machine learning and analytics for small companies. Our main focus is to bring down the budget for small companies and startups who want to explore things in Machine Learning. Affordable Machine Learning for startups and small companies. We are partnering up with various startups and small companies.

Portfolio highlights

• Vention — Design and order custom industrial equipment in days. Fast and easy-to-use cloud CAD, loaded with modular parts, that ship next day.
• OffGridBox — An all-in-one system using solar energy to purify water and distribute clean energy. off grid container, offgrid water, off-grid electric products, solar water box, building off grid, power in a box, off grid technology, shipping container solar system

Portfolio highlights

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

Portfolio highlights

• Scopely — Scopely is a global interactive entertainment and mobile-first games company, home to many top-grossing, award-winning franchises including “Star Trek™ Fleet Command,” “MARVEL Strike Force,” “Scrabble® GO,” “WWE Champions” and “Yahtzee® With Buddies,” among others. Scopely creates, publishes and live-operates immersive games that empower adirected-by-consumer™ experience. Founded in 2011, Scopely is fueled by a world-class team and a proprietary technology platform Playgami that supports one of the most diversified portfolios in the mobile games industry. Recognized multiple times as one of Fast Company’s “World’s Most Innovative Companies,” Scopely is a multi-billion-dollar business due to its ability to create long-lasting game experiences that players enjoy for years. Scopely has global operations across 17 markets (Asia-Pacific - Bangalore, Seoul, Shanghai, Singapore, Tokyo; EMEA - Barcelona, Dublin, Helsinki, Kyiv, London, Seville, Tel Aviv; North America - Boston, Boulder, Culver City, Mountain View, San Francisco), with additional game studio partners across four continents. For more information, visit www.scopely.com.
• Dropshyp — Shop the latest and greatest products online at best possible prices with your one stop shop for everything. Save money and start shopping with Online Shop.
• Advanced Microgrid Solutions — Advanced Microgrid Solutions installs advanced energy storage systems in buildings to lower energy costs for consumers and provide clean. AMS's Hybrid-Electric BuildingsTM Project deploys large networks of battery systems in targeted buildings where electric utilities need grid support. The company can seamlessly shift an entire fleet ofbuildings from grid power to battery power providing real-time support to the electric grid. Building owners get paid for being part of the solution to today's energy challenge.Advanced Microgrid Solutions artificial intelligence-powered software maximizes the value of renewables, batteries, and entire asset portfolios so they can deploy and use more clean energy with higher ROI. It uses deep learning algorithms to enable optimized trading of complex energy assets in wholesale energy markets. The company was founded in 2013 and is headquartered in San Francisco, California, United States.

Portfolio highlights

• Sunrun — Sunrun is the leading home solar panel and battery storage company. Go solar for little to $0 down, lock in low energy rates. Get a quote today
• PastureMap — PastureMap helps ranchers and farmers make profits building healthy grasslands. The company builds a global regenerative agriculture movement that is restores soil health, sequestering carbon, and provides clean water while feeding local communities.
• ASSOS of Switzerland — Visit the Official Store for ASSOS of Switzerland, engineering and designing cycling equipment and accessories for men and women since 1976.

Portfolio highlights

• altM — altM is an alternate materials company on a mission to develop the future of materials to reduce carbon footprint and improve circularity in their supply chain.
• Praan — Praan builds the world's most advanced air purification technologies for commercial and industrial applications.
• Awaaz.De — Awaaz.De provides technology solutions and services for development sector organizations to connect with under served communities. It develops cost-effective, easy-to-use communication and data collection tools that work on mobiles and landlines, breaking language and literacy barriers. Awaaz.De clients use their applications for health, education,microfinance, and agriculture to increase the impact.Awaaz.De was founded on 2010 and is headquartered in Ahmedabad, India.

Portfolio highlights

• Dubdub.ai — Google translate for videos
• MoneyyApp — We at MoneyyApp are helping Creators to grow their businesses. The struggle of the creators trying to make a mark has been tiring, and we understand that! The inception of MoneyyApp lays the foundation for creators’ atrocities.
• KathaVersse Media Network — KathaVersse Media Network is a universe and franchise-driven premium entertainment studio that develops social and over-the-top video IPs. KathaVersse Media Network develops content IPs with a minimum shelf life of seven years in order to maximize ROI for audiences, marketers, and over-the-top partners.

Portfolio highlights

• Retool — Retool is the fastest way to build effective business software. Use Retool's building blocks to develop apps and workflow automations that connect to your databases and APIs, instantly.
• Polywork — A network that doesn’t restrict you to telling your story through a list of arbitrary job titles; that doesn’t let any random stranger you’ve never even met endorse you for skills you never knew you had. They want to build a network that empowers you and gives you control over your identity and your future opportunities.
• Terraform Industries — Terraform Industries manufactures carbon negative "natural gas" by extracting CO2 from the atmosphere. Since a large fraction of natural gas is not burned but used industrially for products including fertilizer, plastics, pharmaceuticals, coatings and adhesives, our natural gas is net carbon negative.Terraform Industries is a bet oncheap solar, synthetic hydrocarbon supremacy, and hyperscale.The overarching goal is to zero out the net transport of carbon from the crust to the atmosphere and oceans as quickly as possible by displacing drilled natural gas production with direct atmospheric processing.

Portfolio highlights

• Kevala — Kevala helps our customers predict and plan for a safer, more effective, and environmentally sustainable grid through our cloud-based data analytic and visualization platform.

Portfolio highlights

• Reloadly — Reloadly is the #1 mobile top-up platform when it comes to developer-friendly technology. With our API and a few lines of code, you can easily integrate mobile top-up features into your website or mobile app.
• Openlytics — Openlytics is a visual analytics platform. It allows Data Workers to create pipelines for data transformation and analysis, in a visual way. Our mission is to empower everyone in the organization to solve data problems, without waiting for developers.Openlytics is an early-stage company, looking to build a founding team that can shape thedirection of the product. We’re seed-funded, remote-first, and hiring.If you're interested in learning more, email us at hello@openlytics.io.
• humm — humm harnesses cutting-edge neuroscience into products that allow people to learn faster and perform better.humm is working to bring the incredible results of neuroscience research out of the lab and into non-invasive wearables that improve the quality of life for everyday people. Our first product is a clinically validated patch that you wearfor 15 minutes to get up to 90 minutes of improved working memory, by gently stimulating the signals in the part of the brain that controls your executive thinking. humm improves your ability to learn and be at your best, allowing people to reconnect with the joy of learning and challenge themselves to continue growing at any stage of life, whether it's for work or personal enjoyment!

Portfolio highlights

• 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.

Portfolio highlights

• Warp — Warp is a Rust-based terminal reimagined to focus on productivity, efficiency, and speed. It is now available on MacOS. Warp has an IDE-like input area and it groups input and output together into atomic units. It also features Warp AI, which explains errors and suggests commands using AI.
• Uncommon — Uncommon is a pluripotent team of bio-creators, forging a healthier future of food. Formerly known as HigherSteaks
• Vital Bio — Reinventing diagnostics for proactive & accessible care. Diagnostics designed for better outcomes. Eliminating gaps between care and treatment.