# Top 50 Clean Energy Angel Investors in May 2026

| Investor | Relevant Deals | Geography | Stage | Focus |
| --- | --- | --- | --- | --- |
| Josh Manchester | 2 | United States, Singapore, United Kingdom | Seed, Pre-Seed, Angel | Software, Machine Learning, Satellite Communication |
| Luke Kupersmith | 2 | United States | Angel | CleanTech, Clean Energy, Renewable Energy |
| Kevin Weatherman | 2 | United States | Seed, Pre-Seed | SaaS, Software, Information Technology |
| Sagar Ratilal Bavarva | 2 | India, The Netherlands, Germany | Private Equity, Pre-Seed | Renewable Energy, Clean Energy, Solar |
| Jeff Bezos | 2 | United States, United Kingdom, India | Grant, Series B, Series A | Non Profit, Software, Communities |
| Gaurav Gupta | 2 | India | Angel | Solar, Energy, CleanTech |
| Nat Friedman | 2 | United States, United Kingdom, Spain | Seed, Series A, Series B | Software, Artificial Intelligence, Information Technology |
| KepalaBergetar TV | 2 | United States, France, United Kingdom | Seed, Pre-Seed, Series A | Software, Information Technology, Health Care |
| Murat Abdrakhmanov | 2 | United States, Kazakhstan, Finland | Pre-Seed, Seed, Series A | SaaS, Information Technology, Advertising |
| Edward Kim | 2 | United States | Angel | CleanTech, Clean Energy, Renewable Energy |
| Philipp Kloeckner | 2 | Germany | Seed, Angel | Financial Services, Banking, FinTech |
| Mark Cuban | 2 | United States, United Kingdom, Singapore | Seed, Series A | Software, Artificial Intelligence, Blockchain |
| Warren Buffett | 2 | United States, Taiwan, United Kingdom | Seed, Pre-Seed, Post-IPO Equity | Retail, Health Care, Health Diagnostics |
| Jeremy Yap | 2 | United States, United Kingdom, Germany | Seed, Pre-Seed, Angel | Software, Artificial Intelligence, Machine Learning |
| Eugene Goldberg | 2 | United States | Angel | CleanTech, Clean Energy, Renewable Energy |
| Elon Musk | 2 | United States | Series A, Series B, Seed | FinTech, SMS, Transportation |
| Alex Kahn | 2 | United States, India | Series A, Seed, Angel | Internet, Health Care, Sponsorship |
| Chris Sang | 1 | United States, Australia, India | Seed, Pre-Seed, Series A | Software, E-Commerce, Mobile |
| R. Mohan Kumaramangalam | 1 | India | Angel | SaaS, Energy, Clean Energy |
| Maxime Hurtebize | 1 | France | Seed | CleanTech, Electronics, Health Care |
| Ramez Naam | 1 | United States, Singapore | Series B, Seed, Series A | Renewable Energy, Energy, Automotive |
| Arnold Schwarzenegger | 1 | United States | Series A, Pre-Seed, Series B | Information Technology, Collaboration, Digital Entertainment |
| Tyson Trautmann | 1 | United States | Convertible Note | Solar, Clean Energy, Renewable Energy |
| Edgard Vermeersch | 1 | Belgium |  | CRM, Energy, Software |
| Ugochukwu Aronu | 1 | Nigeria | Pre-Seed | Drones, Energy, Delivery |
| Andrew Coors | 1 | United States | Series A | Aerospace, CleanTech, Automotive |
| Robin Chiang | 1 |  |  |  |
| Maximilian Both | 1 | Germany | Pre-Seed | Software, CleanTech, Clean Energy |
| Matthias Ernst | 1 | Germany | Pre-Seed | CleanTech, Software, Clean Energy |
| Jason Franklin | 1 | United States | Seed, Series A, Series B | Health Care, Artificial Intelligence, Machine Learning |
| Walter Winshall | 1 | United States, France | Seed, Series A, Angel | Software, Finance, SaaS |
| Ashton Kutcher | 1 | United States, Germany, Canada | Seed, Series A, Series B | Software, E-Commerce, Mobile |
| Kai Klapdor | 1 | Germany | Pre-Seed | Software, CleanTech, Clean Energy |
| Julian Teicke | 1 | Germany, France | Angel, Seed, Pre-Seed | Software, Restaurants, Human Resources |
| Vinod Khosla | 1 | United States, India, United Kingdom | Series A, Series B, Seed | Health Care, Software, Artificial Intelligence |
| Gregory Avis | 1 | United States, Switzerland | Series A, Seed, Series B | CRM, SaaS, Solar |
| Bill Gates | 1 | United States, Saudi Arabia, South Africa | Series A, Series E | Energy, Health Care, Hardware |
| John Lefebvre | 1 | United States | Convertible Note | Solar, Clean Energy, Renewable Energy |
| Kerim Baran | 1 | Israel, United States | Seed | Email, Solar, Energy |
| James Sowers | 1 | United States, Switzerland, Singapore | Initial Coin Offering, Seed, Secondary Market | Blockchain, Cryptocurrency, Software |
| Tim Angus | 1 | Canada | Series B, Convertible Note | Solar, Energy, Wireless |
| Ariel Poler | 1 | United States, Mexico, United Kingdom | Seed, Series A, Angel | Software, Social Media, Internet |
| Andreas Kupke | 1 | Germany | Seed, Pre-Seed, Series A | Drones, Biotechnology, Satellite Communication |
| Mo Hajhashem | 1 | United Kingdom | Pre-Seed | Energy, GreenTech, Blockchain |
| Mark Goines | 1 | United States, Japan, Brazil | Seed, Series A, Angel | Financial Services, Software, FinTech |
| Duran Cesur | 1 | United States, United Kingdom | Pre-Seed, Series A | Clean Energy, Nanotechnology, Machine Learning |
| Jackson Moses | 1 | United States | Pre-Seed, Seed, Series A | Aerospace, Government, Software |
| Dwayne Douglas Johnson | 1 | United States | Pre-Seed | Sports, Farming, CleanTech |
| Ivanka Trump | 1 | United States, United Arab Emirates | Seed, Pre-Seed, Series A | Education, Farming, CleanTech |
| Ronald Conway | 1 | United States, Canada, Denmark | Series A, Seed, Angel | Software, Social Media, Advertising |

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