Top 50 CleanTech Angel Investors in May 2025

Biz Stone is the Co-founder and CEO of Jelly Industries, Inc. He previously worked at The Obvious Corporation as a Co-founder and Chief Creative Officer. Biz Stone attended Northeastern University.

Paul Forster

business angel // entrepreneur // founder lieferando.de // boardmember booksy.com

David Rowan is editor of the UK edition of WIRED magazine, which won 2009 Launch of the David Rowan is Editor of the WIRED UK, the technology and trends magazine covering online brands, gadgets and the culture that surrounds them. David has reported on technology for The Times and Channel 4 News, the latter requiring him to illustrate the newiPod Video from the set of a porn shoot. He's also written for The Sunday Times and Telegraph Magazines, and edited the Guardian's on-line content. David has curated an exhibition of British creative talent at the Government's Cabinet Forum conference. He has also addressed the TEDs, and frequently contributes on Newsnight and the Today programme. He also writes a monthly column for GQ. David is in touch with many of the world's leading trend-setters and spotters. In presentations he looks at how the net is disrupting almost every sector, how apps change consumer behaviour and why 'social commerce' is killing traditional marketing. He reveals the 10 trends that will change your market in the next decade - and what you should be doing now to protect yourself.

Chris Murphy is a Venture Partner at MS&AD Ventures. He previously cofounded SaaStock and was an early Web Summit employee.

David E. Weekly is the Head of The Capital One Lab of Capital One. He previously worked at Medcorder as a Founder and CEO. David E. Weekly attended Stanford University.

Angel / Sophisticated Investor and Trader (Ex London Stock Exchange(LSE), Deutsche Bank, London Clearing House(LCH) ) , Invested in 60+ Startups / 4 successful exits (with Avg 20x) and counting more. (Web3 -> udaybs.ETH )Invested in following asset classes from past 2 decades across UK / India / US / Europe / -Private Equity (Seed / Growth / VC/ Acquisition / Merger) - Equity Markets - Real Estate - FX - Commodity - Bonds - Fintech, Blockchain, Crypto Market, Web3 , DeFi, NFT - Derivative Markets / Hedging / F&O / CFDGrowing Wealth in bumpy economic rides - There is no secret formula. Investment is an art. Being vigilant, dynamic, connecting dots, evaluating risk with constant change, loads of patience and visualising medium to long term.Private Equity Investments across globe in following domains / categories: - Energy - EV / Carbon Footprint - Blockchain / FinTech / AI / ML / Web3 / DeFi - D2C / B2C - Food & Beverages - Pharma - Media & Entertainment

I am a serial entrepreneur and angel investor with 15+ years of international experience in sales & marketing, leading teams of 300+ with annual revenue of 10M+. Founder of 3 international companies and investor to 10+ startups. Member of the board at Estonian Business Angels Network.

Christian Kaar is the VP of Finance and Business Analytics at Leaders21com. Christian Kaar attended University of Applied Sciences Upper Austria.

Job Dura

Peter Mertens

Luigi Bajetti is the managing partner and founder of Lombardstreet Ventures, an early-stage venture capital firm in Menlo Park, California.Luigi is a serial entrepreneur with over 25 years of experience in the tech and internet industries, with a wealth of knowledge and expertise in building and scaling startups.As a full-time investor since2013, he has been leveraging his experience and insights to identify and support the next generation of Silicon Valley founders. With a passion for backing game-changing technologies and a talent for spotting emerging trends, Luigi has a proven track record of success in identifying groundbreaking startups. He has invested almost always at the earliest possible stage of seed in 20+ US startups valued at over $30 billion combined, including 9 that have since become unicorns.

Ashley Mayer is the Operating Council at Mixing Board . Ashley Mayer attended Georgetown University.

Brent Hoberman is the Co-Founder and Executive Chair of Founders Forum. He previously worked at Royal Academy of Arts as a Corporate Advisory Board. Brent Hoberman attended the University of Oxford.

Tim Schumacher is a Managing General Partner at World Fund. Tim previously worked at Sedo.com as a Member Board Of Directors. He attended University of Cologne and Stockholm School of Economics.Tim Schumacher Co-Founded and was the longtime CEO of the publicly traded company Sedo AG, which currently has revenues of 130m euros per year andmaintains approximately 350 employees. Since 2012 he has dedicated his professional career to the German startup scene, acting both as a business angel and mentor for young companies with economic potential. His current startups, among many others, are Eyeo/Adblock Plus, Aklamio, Hitfox and Ecosia.

Gaurav Gupta

Alfred Luger

Markku Jääskelainen.

Jeffrey Preston Bezos is the Founder of Blue Origin. He previously worked at Cashican People LLC as an Investor. Jeff Bezos attended Princeton University.

Akshay Singhal is the Co-Founder and CEO at Log 9 Materials a sub-organization of Log 9 Spill Containment.

Matthias Ernst is a Managing Partner at ARRtist. He previously worked at XLETIX and attended IESE Business School.

Shashank is Founder VC and Co-Founder of 100X.VC - India's first venture fund to invest in early-stage startups using iSAFE Notes. Portfolio: https://www.100x.vc/. Investments through Randev Ventures Family Office in early-stage startups across India, SEA & USA with a keen interest in B2B Emerging technology, Deeptech,SaaS, Cleantech, and Web3. Randev Ventures is the private investment body of Randev Family Office. He brings entrepreneurial and investment understanding with 15+ years of cross-functional expertise. Previously, he was the Founding member and Vice President of VCCEdge, the SaaS data platform by VCCircle (acquired by News Corporation in 2015). He launched the SaaS platform, led revenue, product development, and growth initiatives for close to seven years at VCCEdge. He has additionally worked with NIIT Ltd. and Zensar Technologies Ltd.He is also an Angel Investor and Advisor with a keen interest and portfolio investments in B2B Emerging technology, Deeptech, SaaS, Cleantech, and Web3 startups. Shashank holds an undergraduate degree in Bachelor of Engineering from Nagpur University, and an MBA from International Management Institute (IMI), New Delhi.Shashank’s professional ability in developing, launching and making the first move when it comes to products and solutions is reflected in the novel model of 100X.VC. As a Co-Founder of 100X.VC, he is part of the Investment Committee and works closely with portfolio companies on how to improve the chances of new products succeeding. And helping them raise followon capital from growth stage VCs, CVCs, and family offices.Specialties: Entrepreneurship, Scaling up Startups, Angel & Seed Investment & Venture Capital

Jonathan Seaton is the co-founder and chief executive officer at Twinkl.

Daniel Recanati is the Founder & CEO of Rhodium. a private investment firm whose mission is to identify the most promising entrepreneurs and help them build thriving companies. focusing on Impact, digital, climate tech and space via Earth & beyond ventures. .

Marc Tarpenning is a member of the advisory board at Clearpath Robotics , a manufacturer of unmanned vehicles for industrial research and development applications. He also provides services as an advisor to many other companies. Previously, he was a mentor at Greenstart.Marc is a Venture Partner at Spero Ventures. He was previously anentrepreneur in residence at Mayfield Fund before he joined Greenstart. Prior to that, he co-founded and served as the vice president for engineering at Tesla Motors. He also held executive positions at Packet Design, NuvoMedia, and Gemstar-TV Guide.Tarpenning holds a bachelor’s degree in computer science from the University of California, Berkeley. He lives in San Francisco, California, United States.

Maximilian Odendahl - CEO & Co-Founder @ Silexica

Philipp has been product manager and inhouse SEO at the market leading price comparison in Germany (Idealo.de) for 6 years. He specializes in the fields of accessability, crawlability and onpage optimization of websites with 1M+ subpages.Since 2011 Philipp Klöckner focuses on search consultancy and angel investing to share his experience insearch marketing, product and business intelligence with publishing houses, e-commerce companies and start-ups as an independent consultant and angel investor.

Elon Musk has co-founded companies such as SpaceX and tunneling startup The Boring Company, and has played served as CEO of Tesla Motors since 2008. He previously worked as a sales manager at many enterprise LLCs. Elon Musk attended the University of Pennsylvania and received bachelor's degrees in economics and physics.

Mark Cuban is the founder of Fireside, Chairman and Founding Partner of AXS TV, and the Owner of Dallas Mavericks. He previously worked at Broadcast.com as a Co-Founder. Mark Cuban attended the Indiana University Bloomington.

David is a technologist, the founder of Unity Technologies, non-exec director to others, and a restless entrepreneur with a passion for creating feedback loops between innovation and teams and products, applying new and old business models to changing industries, and pushing people to do the very best they can do.David's background is inprogramming, an assortment of university dabbling, creating companies, and helping entrepreneurs. He served as CEO of Unity Technologies since co-founding it in 2003 and until October 2014, with an unflinching vision to democratize game development, and to develop technology and business models for the next phase of the games industry. David Helgason attended the University of Copenhagen.

Justin Hamilton is Founder, CEO at Clutterbot.

Ali Omar is a Member of the Finnish Business Angels Network. He attended Aalto University and the University of Oulu.

Eugene Goldberg

Warren Buffet is a businessman and investor. He was born Warren Edward Buffett on August 30,1930, in Omaha, Nebraska. Buffett's father Howard worked as stockbroker and served as U.S. Congressman. His mother, Leila Stahl Buffett, was a homemaker. Buffett was the second of three children and the only boy.Buffett demonstrated a knack forfinancial and business matters early on in his childhood. Friends and acquaintances have said the young boy was a mathematical prodigy, and was able to add large columns of numbers in his head-a talent he still occasionally shows off to friends and business associates.Warren often visited his father's stockbrokerage shop as a child, and chalked in the stock prices on the blackboard in the office. At 11 years old he made his first investment; he bought three shares of Cities Service Preferred at $38 per share. The stock quickly dropped to only $27, but Buffett held on tenaciously until they reached $40. He sold his shares at a small profit, but regretted the decision when Cities Service shot up to nearly $200 a share. He later cited this experience as an early lesson in patience in investing.By the age of 13, Buffett was running his own businesses as a paperboy and selling his own horseracing tip sheet. That same year, he filed his first tax return, claiming his bike as a $35 tax deduction.In 1942, Buffett's father was elected to the U.S. House of Representatives, and his family moved to Fredricksburg, Virginia, to be closer to the congressman's new post. Buffett attended Woodrow Wilson High School in Washington, D.C., where he continued plotting new ways to make money. During his high school tenure, he and a friend purchased a used pinball machine for $25. They installed it in a Washington, D.C. barbershop and, within a few months, the profits of the machine allowed Buffett and his friend to buy other machines. Buffett owned three machines in three different locations before he sold the business to a War Veteran for $1,200.Buffett enrolled at the University of Pennsylvania at the age of 16 to study business. He stayed two years, moved to the University of Nebraska to finish up his degree, and emerged from college at age 20 with nearly $10,000 from his childhood businesses.Buffett attended Columbia University for his advanced degree and in 1956, shortly after graduation, he formed the firm Buffett Partnership in his hometown of Omaha. His investment successes, particularly in buying undervalued companies whose stocks shortly began to rise, made him extremely rich and gained him the sobriquet, "Oracle of Omaha." Other notable career succeses include helping rescue Salomon Brothers from corporate raiders (1987) and taking charge of the New York City house (1992) in the wake of an insider trading scandal.In June 2006, Buffett made an announcement that he would be giving his entire fortune away to charity, committing 85 percent of it to the Bill and Melinda Gates Foundation. This donation became the largest act of charitable giving in United States history.The majority of Buffett's considerable fortune was amassed through Berkshire Hathaway, a company for which he is the largest shareholder and CEO. Ranked as Forbes' wealthiest man in 2008, his net worth is estimated at more than $62 billion.Source:

Kathy Fields is the Co-Founder of Alchemee. Kathy Fields attended Taylor University.

Venture Capitalist, Managing Partner, Chief Technology Officer

Ronald Cohen is Chairman of the Global Social Impact Investment Steering Group and The Portland Trust. He is a co-founder director of Social Finance UK (2007-11), Social Finance USA, and Social Finance Israel, and of Big Society Capital. He was co-founder Chair of Bridges Ventures (2002-2012).He chaired the Social Impact Investment Taskforceestablished under the UK’s presidency of the G8 (2013-2015), the Social Investment Task Force (2000-2010) and the Commission on Unclaimed Assets (2005-2007). In 2012 he received the Rockefeller Innovation Award for innovation in social finance.He co-founded and was Executive Chairman of Apax Partners Worldwide LLP (1972-2005). He was a founder director and Chairman of the British Venture Capital Association and a founder director of the European Venture Capital Association.He is a graduate of Oxford University, where he was President of the Oxford Union. He is an Honorary Fellow of Exeter College, Oxford. He has an MBA from Harvard Business School to which he was awarded a Henry Fellowship.He is a member of the Board of Dean’s Advisors at Harvard Business School and Vice-Chairman of Ben Gurion University. He is a former director of the Harvard Management Company and the University of Oxford Investment Committee. He is a former member of the Harvard University Board of Overseers (2007-2013), former Trustee of the British Museum (2005-2012) and a former trustee of the International Institute for Strategic Studies (2005-2011).In 2007, Sir Ronald published: “The Second Bounce of the Ball – Turning Risk into Opportunity”.

Bhavik Bajaj

Dr Rand Hindi is an entrepreneur and investor in 50+ deeptech and web3 companies. He is the CEO at Zama, a homomorphic encryption startup. Rand started coding at the age of 10, created a social network at 14, and started his PhD at 21. He then created Snips, the first private-by-design voice assistant, which was acquired by Sonos. He was electedan MIT TR35, a Forbes “30 under 30”, and was a lecturer at Sciences Po in Paris as well as a member of the French Digital Council.He holds a BSc in Computer Science and a PhD in Bioinformatics from University College London (UCL).

Torge Thönnessen is the Co-founder and CEO at Custom Cells.

Karim Jalbout, based in London, leads the Digital and eCommerce segments of Egon Zehnder’s Technology and Communications Practice in Europe. Karim also leads the firm’s Chief Marketing Officers Practice in the UK. He is a trusted advisor to private equity, family-owned businesses, and start-ups at the C-suite and board levels. Karim has servedclients across hospitality, travel, publishing, financial services, telecommunications, pure play, and retail. He has deep experience in emerging markets, particularly India.Prior to joining Egon Zehnder, Karim was Global Head of Propositions & Sales at Sony Ericsson Mobile, where he drove early investment in the Android platform. Previously, Karim gained more than a decade of FMCG experience with Diageo. He started his career working in Brand Management for Guinness in Canada, then moved to London as Brand Controller Guinness and Malta Guinness for the Africa region. Karim subsequently led Baileys in the UK market and was Marketing Director for Guinness in Europe, including Ukraine and Russia. Karim earned a Bachelor of Commerce from Queen’s University in Canada and completed the Executive Education program at Stanford Graduate School of Business. He has been a key speaker at the Digital Innovation Summit as well as for Endeavour (a global entrepreneur network) and LIFE (an international non-profit organization for Lebanese Executives in Finance).

In 2012 Anna together with her co-founder Julia launched OUTFITTERY with the vision to create a shopping experience for men that is convenient, fun and inspiring. Today, OUTFITTERY serves individual outfits to over 600k men in eight countries and Anna is one of the most famous female entrepreneurs in Europe. In 2016, she was voted amongst Europe’s“Inspiring Fifty”, the 50 most inspirational women in tech. Prior to OUTFITTERY Anna lead the IT of the Swiss group buying platform DeinDeal in Zurich. She studied economic sociology in Freiburg and Paris.

Holly Branson Chief Purpose and Vision Officer at Virgin.

Naveen Kshatriya - Managing Partner, Founder @ Kshatriya ventures

Sam Branson Co-founder at HiddenLight Productions.

Elizabeth Cutler and her partner Julie Rice were determined to find an alternative to the fitness routines that felt like work. In 2006, they created SoulCycle, a workout that combines inspirational coaching with high-energy music and a full body workout on the bike. Today, riders of all ages have responded to the SoulCycle cardio party withover 60,000 people riding at SoulCycle every week. Elizabeth was honored as one of Goldman Sachs' 100 Builders + Innovators in 2013 and 2014, and SoulCycle was voted one of the World's Top 10 Most Innovative Companies in Fitness of 2013 by Fast Company.In 2015, Elizabeth was voted one of Fast Company's Most Creative People in Business.

Luke Kupersmith - President & CEO @ Lojistic

Simon Rothman is a Partner at Greylock Partners and was a Founder and CEO at Glyde. He attended Harvard University.

Bill Gates is the Co-chair of Bill and Melinda Gates Foundation. He attended Harvard University.

- MD at Techstars (Berlin/Amsterdam/Turin) - Founding member, CFO/COO of Cunesoft (acquired by Phlexglobal) - Founder of GeeXstar, Asia's first tech-focused investment banking boutique - Founder of Clappifieds.de <http://clappifieds.de/>, a classifieds marketplace for Apple products - Mentor at TechGrind,Thailand’s first tech incubator, investing in promising startups across SEA – Founder of HonMed, a network for independent emergency doctors in Germany – Founder of a CoWorking space