# Solo angels backing Cleantech (2026 list) > 33 solo angels backing Cleantech, 73% active in the last 12 months. Led by 500 Global, Sam Altman, Lachy Groom. Ranked by what they funded. Source: https://millionrounds.com/lists/solo-angels-cleantech (Millionrounds; every figure on the page links to its filing or article) [Investor Lists](https://millionrounds.com/lists) # Solo angels backing Cleantech Updated 7 November 2026 Solo angels we have observed in a cleantech round in the last two years. [See all 33 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fsolo-angels-cleantech)The top 25 **33** investors on the list *-5* this week **121** cheques in 12 months *-39%* against the market **$22M** median round they joined *+175%* against the market median **73%** wrote a cheque in 12 months **15%** have led a round ## The Top 25 Ordered by cheques observed, never by anything anyone paid for Deploying now (19) - 1 [500 Global](https://millionrounds.com/fund/500-startups) *Deploying now* Angel · United States **2,140** **$3.6M** median round **Oct 2026** last seen - 2 [Sam Altman](https://millionrounds.com/fund/sam-altman) *Deploying now* Angel · United States **82** **$15M** median round **Jun 2026** last seen - 3 [Lachy Groom](https://millionrounds.com/fund/lachy-groom) *Deploying now* Angel · United States **37** **$12M** median round **Oct 2026** last seen - 4 [Jared Leto](https://millionrounds.com/fund/jared-leto) *Deploying now* Angel · United States **23** **$63M** median round **Mar 2026** last seen - 5 [Ray Rothrock](https://millionrounds.com/fund/ray-rothrock) *Deploying now* Angel **13** **$13M** median round **Aug 2026** last seen - 6 [Dustin Moskovitz](https://millionrounds.com/fund/dustin-moskovitz) *Deploying now* Angel · United States **12** **$425M** median round **Aug 2026** last seen - 7 [Vinod Khosla](https://millionrounds.com/fund/vinod-khosla) *Deploying now* Angel **12** **$20M** median round **Oct 2026** last seen - 8 [Waikit Lau](https://millionrounds.com/fund/waikit-lau) quiet Angel **5** **$16M** median round **Sept 2025** last seen - 9 [Ashish Kacholia](https://millionrounds.com/fund/ashish-kacholia) *Deploying now* Angel · India **4** **$12M** median round **Oct 2026** last seen - 10 [Chris Larsen](https://millionrounds.com/fund/chris-larsen) *Deploying now* Angel **4** **$30M** median round **Oct 2026** last seen - 11 [Gary Rieschel](https://millionrounds.com/fund/gary-rieschel) *Deploying now* Angel **4** **$20M** median round **Feb 2026** last seen - 12 [Société Générale](https://millionrounds.com/fund/societe-generale) *Deploying now* Angel **4** **$195M** median round **Oct 2026** last seen - 13 [HPS Investment Partners](https://millionrounds.com/fund/hps-investment-partners) *Deploying now* Angel **3** **$857M** median round **Oct 2026** last seen - 14 [Lashit Sanghvi](https://millionrounds.com/fund/lashit-sanghvi) *Deploying now* Angel **3** **$9.8M** median round **Oct 2026** last seen - 15 [Pat Cummins](https://millionrounds.com/fund/pat-cummins) *Deploying now* Angel **3** **$7.5M** median round **Jun 2026** last seen - 16 [John Wood](https://millionrounds.com/fund/john-wood) quiet Angel **2** **$553K** median round **Jun 2025** last seen - 17 [Myron Scholes](https://millionrounds.com/fund/myron-scholes) quiet Angel **2** **$10M** median round **Jan 2025** last seen - 18 [Andrew Volpe](https://millionrounds.com/fund/andrew-volpe) quiet Angel **1** **$24M** median round **Dec 2024** last seen - 19 [Ankit Gupta](https://millionrounds.com/fund/ankit-gupta) *Deploying now* Angel **1** **$180M** median round **Sept 2026** last seen - 20 [Bill Ford](https://millionrounds.com/fund/bill-ford) *Deploying now* Angel **1** **$465M** median round **Jun 2026** last seen - 21 [Christiaan Jordaan](https://millionrounds.com/fund/christiaan-jordaan) quiet Angel **1** **$553K** median round **Jun 2025** last seen - 22 [Kevin Chin](https://millionrounds.com/fund/kevin-chin) *Deploying now* Angel **1** **$30M** median round **Feb 2026** last seen - 23 [Kris Singh](https://millionrounds.com/fund/kris-singh) *Deploying now* Angel **1** **$462M** median round **Dec 2025** last seen - 24 [Matt Sweeney](https://millionrounds.com/fund/matt-sweeney) quiet Angel **1** **$24M** median round **Dec 2024** last seen - 25 [Matteo Franceschetti](https://millionrounds.com/fund/matteo-franceschetti) *Deploying now* Angel **1** **$31M** median round **Aug 2026** last seen **8 more on this list** All 33 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000. [See the whole list *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fsolo-angels-cleantech) ## The Newest Cheques Rounds this list's investors joined most recently - **30** Oct **[Neoen](https://millionrounds.com/company/neoen)** Debt · $1.3B *With* [Société Générale](https://millionrounds.com/fund/societe-generale) - **26** Oct **[Giga Storage](https://millionrounds.com/company/giga-storage)** Debt · $291M *With* [Société Générale](https://millionrounds.com/fund/societe-generale) - **24** Oct **[LanzaJet](https://millionrounds.com/company/lanzajet)** Other · $20M *With* [Vinod Khosla](https://millionrounds.com/fund/vinod-khosla) - **23** Oct **[Greenzo Energy](https://millionrounds.com/company/greenzo-energy)** $14M *Led by* [Ashish Kacholia](https://millionrounds.com/fund/ashish-kacholia) - **21** Oct **[Optivolt](https://millionrounds.com/company/optivolt)** Series A · $32M *With* [Tom Werner](https://millionrounds.com/fund/tom-werner) - **14** Oct **[Othello](https://millionrounds.com/company/othello)** Seed · $8M *With* [Chris Larsen](https://millionrounds.com/fund/chris-larsen) ## Stages This Year 115 rounds - Seed **22%** - Series A **17%** - Venture **12%** - Debt **10%** - Other **10%** - Other **29%** ## What They Backed Sectors, last 12 months - AI **39** - Cleantech **15** - Fintech **14** - Energy **13** - Financial Services **8** - Healthcare **8** ## Cheques by Quarter Led Joined 55 Q1 25 52 Q2 25 49 Q3 25 42 Q4 25 42 Q1 26 28 Q2 26 26 Q3 26 14 Q4 26 The last bar is the quarter still running. ## Lists Like This - [VC firms backing AI 4,329](https://millionrounds.com/lists/vc-firms-ai) - [VC firms backing Fintech 1,856](https://millionrounds.com/lists/vc-firms-fintech) - [VC firms backing Big Data & Analytics 1,248](https://millionrounds.com/lists/vc-firms-big-data) - [VC firms backing Biotech 1,207](https://millionrounds.com/lists/vc-firms-biotech) - [VC firms backing Robotics 1,098](https://millionrounds.com/lists/vc-firms-robotics) - [VC firms backing Construction 1,025](https://millionrounds.com/lists/vc-firms-construction) - [VC firms backing Energy 998](https://millionrounds.com/lists/vc-firms-energy) - [PE firms backing AI 956](https://millionrounds.com/lists/pe-firms-ai) - [VC firms backing Cybersecurity 950](https://millionrounds.com/lists/vc-firms-cybersecurity) [All investor lists *→*](https://millionrounds.com/lists) ## Reading for founders in climate and energy - Taming the Sun: Innovations to Harness Solar Energy and Power the Planet Varun Sivaram · 2018 4.06 from 510 ratings on Goodreads Climate and energy Innovation About the book How solar could spark a clean-energy transition through transformative innovation--creative financing, revolutionary technologies, and flexible energy systems. Solar energy, once a niche application for a limited market, has become the cheapest and fastest-growing power… On AmazonListen on Audible - Race for Tomorrow: Survival, Innovation and Profit on the Front Lines of the Climate Crisis Simon Mundy · 2022 4.22 from 207 ratings on Goodreads Climate and energy Innovation Company building About the book In this extraordinary journey through twenty-six countries, Simon Mundy meets the people on the front lines of the climate crisis, showing how the struggle to respond is already reshaping the modern world – shattering communities, shaking up global business, and propelling a… On AmazonListen on Audible - The Elements of Power: Gadgets, Guns, and the Struggle for a Sustainable Future in the Rare Metal Age David S. Abraham · 2015 4.06 from 264 ratings on Goodreads Climate and energy Company building About the book Our future hinges on a set of rare metals that few of us have even heard of. In this eye-opening book, a natural resource strategist reveals the critical importance of these transformative elements to our technological lifestyle and the consequences of our reliance upon them,… On AmazonListen on Audible - Scale: The Universal Laws of Growth, Innovation, Sustainability, and the Pace of Life in Organisms, Cities, Economies, and Companies Geoffrey B. West · 2017 4.11 from 5,764 ratings on Goodreads Climate and energy Company building Innovation About the book The former head of the Sante Fe Institute, visionary physicist Geoffrey West is a pioneer in the field of complexity science, the science of emergent systems and networks. The term “complexity” can be misleading, however, because what makes West’s discoveries so beautiful is… On AmazonListen on Audible More books for founders and investors on the [Reading List](https://millionrounds.com/reading-list?role=founder&industry=climate). As an Amazon Associate we earn from qualifying purchases. ## Quick answers about solo angels backing Cleantech ### Who are the most active solo angels backing Cleantech? By cheques observed, the most active are 500 Global, Sam Altman, Lachy Groom, Jared Leto and Ray Rothrock. ### How many solo angels backing Cleantech are there? 33 are on record. 73% made an investment in the last 12 months and 15% have led a round. ### Which stages do solo angels backing Cleantech back? Of the rounds with a named stage in the last 12 months, mostly Seed (29%) and Series A (23%). ### How big are the rounds solo angels backing Cleantech join? The typical (median) round among the leading investors here is $20M. ### Which sectors do solo angels backing Cleantech back most? In the last 12 months, mostly AI, Cleantech and Fintech. ### Which solo angels backing Cleantech lead the most rounds? 500 Global (5 led), Lachy Groom (5 led) and Ashish Kacholia (3 led). ### Where are solo angels backing Cleantech based? Among the most active, most are based in the United States (5) and India (1). ### What have solo angels backing Cleantech invested in recently? Recent rounds include Neoen (Debt, Oct 2026, with Société Générale), Giga Storage (Debt, Oct 2026, with Société Générale) and LanzaJet (Other, Oct 2026, with Vinod Khosla). Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)