# Series C cleantech investors (2026 list)

> 52 series C cleantech investors, 90% active in the last 12 months. Led by Andreessen Horowitz, Lightspeed Venture Partners, Qiming Venture Partners.

Source: https://millionrounds.com/lists/series-c-cleantech-investors (Millionrounds; every figure on the page links to its filing or article)

[Investor Lists](https://millionrounds.com/lists)

# Series C cleantech investors

Updated 7 November 2026

Firms we have watched take part in a Series C round raised by a cleantech company in the last two years. Both the stage and the sector are what they did, not what their website says.

[See all 52 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-c-cleantech-investors)The top 25

**52** investors on the list No change this week

**1,242** cheques in 12 months *-1%* against the market

**$30M** median round they joined *+275%* against the market median

**90%** wrote a cheque in 12 months

**63%** have led a round

## The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

- 1 [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) *Deploying now* VC firm · United States **1,661** **$27M** median round **Nov 2026** last seen
- 2 [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) *Deploying now* VC firm · United States **1,341** **$35M** median round **Nov 2026** last seen
- 3 [Qiming Venture Partners](https://millionrounds.com/fund/qiming-venture-partners) *Deploying now* VC firm · Hong Kong SAR China **526** **$25M** median round **Oct 2026** last seen
- 4 [B Capital](https://millionrounds.com/fund/b-capital) *Deploying now* VC firm · United States **495** **$14M** median round **Oct 2026** last seen
- 5 [Endeavor Catalyst](https://millionrounds.com/fund/endeavor-catalyst) *Deploying now* Corporate VC · United States **318** **$30M** median round **Oct 2026** last seen
- 6 [Valor Equity Partners](https://millionrounds.com/fund/valor-equity-partners) *Deploying now* VC firm · United States **261** **$50M** median round **Nov 2026** last seen
- 7 [Hill House Capital](https://millionrounds.com/fund/hill-house-capital) *Deploying now* Family office · Singapore **248** **$60M** median round **Sept 2026** last seen
- 8 [Thrive Capital](https://millionrounds.com/fund/thrive-capital-2) *Deploying now* Family office **240** **$50M** median round **Oct 2026** last seen
- 9 [Venture Catalysts](https://millionrounds.com/fund/venture-catalysts-2) *Deploying now* VC firm · Portugal **210** **$1.4M** median round **Jun 2026** last seen
- 10 [Parkwalk](https://millionrounds.com/fund/parkwalk) *Deploying now* VC firm · United Kingdom **209** **$6.9M** median round **Oct 2026** last seen
- 11 [Ribbit Capital](https://millionrounds.com/fund/ribbit-capital) *Deploying now* VC firm · United States **205** **$60M** median round **Oct 2026** last seen
- 12 [Bond](https://millionrounds.com/fund/bond) *Deploying now* Growth equity · United States **154** **$47M** median round **Sept 2026** last seen
- 13 [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) *Deploying now* VC firm · United States **146** **$21M** median round **Oct 2026** last seen
- 14 [Rockstart](https://millionrounds.com/fund/rockstart) *Deploying now* Accelerator · Netherlands **131** **$1.2M** median round **Sept 2026** last seen
- 15 [Future Planet Capital](https://millionrounds.com/fund/future-planet-capital) *Deploying now* VC firm · United Kingdom **126** **$3.6M** median round **Sept 2026** last seen
- 16 [Fifth Wall](https://millionrounds.com/fund/fifth-wall) *Deploying now* VC firm · United States **118** **$30M** median round **Sept 2026** last seen
- 17 [Energy Impact Partners](https://millionrounds.com/fund/energy-impact-partners) *Deploying now* VC firm · United States **108** **$30M** median round **Nov 2026** last seen
- 18 [IAN Group](https://millionrounds.com/fund/ian-group) *Deploying now* VC firm · India **108** **$1.3M** median round **Aug 2026** last seen
- 19 [Oxford Science Enterprises](https://millionrounds.com/fund/oxford-science-enterprises) *Deploying now* VC firm · United Kingdom **108** **$11M** median round **Nov 2026** last seen
- 20 [Elad Gil](https://millionrounds.com/fund/elad-gil) *Deploying now* VC firm · United States **101** **$40M** median round **Nov 2026** last seen
- 21 [Australian Renewable Energy Agency (ARENA)](https://millionrounds.com/fund/australian-renewable-energy-agency-arena) *Deploying now* Investment firm · Australia **97** **$3.3M** median round **Nov 2026** last seen
- 22 [9Unicorns](https://millionrounds.com/fund/9unicorns) *Deploying now* VC firm · India **91** **$4.4M** median round **Oct 2026** last seen
- 23 [Hitachi Ventures](https://millionrounds.com/fund/hitachi-ventures) *Deploying now* Corporate VC · Germany **59** **$31M** median round **Oct 2026** last seen
- 24 [Addition](https://millionrounds.com/fund/addition) *Deploying now* Private equity · United States **58** **$38M** median round **Sept 2026** last seen
- 25 [CapitalG](https://millionrounds.com/fund/capitalg) *Deploying now* Corporate VC · Canada **51** **$213M** median round **Oct 2026** last seen

**27 more on this list**

All 52 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%2Fseries-c-cleantech-investors)

## The Newest Cheques

Rounds this list's investors joined most recently

- **6** Nov **[Humble Robotics](https://millionrounds.com/company/humble-robotics)** Series A · $51M *With* [Energy Impact Partners](https://millionrounds.com/fund/energy-impact-partners)
- **5** Nov **[Alethio Therapeutics](https://millionrounds.com/company/alethio-therapeutics)** Series A · $90M *With* [Oxford Science Enterprises](https://millionrounds.com/fund/oxford-science-enterprises)
- **5** Nov **[Zipline](https://millionrounds.com/company/zipline)** Growth · $1.5B *With* [Valor Equity Partners](https://millionrounds.com/fund/valor-equity-partners)
- **4** Nov **[Shackleton AI](https://millionrounds.com/company/shackleton-ai)** Seed · $5M *With* [Trust Ventures](https://millionrounds.com/fund/trust-ventures)
- **4** Nov **[Phaze Inc.](https://millionrounds.com/company/phaze-inc)** Seed · $8.8M *Led by* [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz)
- **3** Nov **[Vereda](https://millionrounds.com/company/vereda)** Seed · $5.5M *With* [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz)

## Stages This Year

1,079 rounds

- Series A **17%**
- Venture **16%**
- Seed **14%**
- Series B **12%**
- Series C **10%**
- Other **31%**

## What They Backed

Sectors, last 12 months

- AI **446**
- Fintech **78**
- Biotech **73**
- Big Data & Analytics **71**
- Healthcare **68**
- Energy **67**

## Cheques by Quarter

Led Joined

292 Q1 25

304 Q2 25

370 Q3 25

389 Q4 25

394 Q1 26

317 Q2 26

296 Q3 26

99 Q4 26

The last bar is the quarter still running.

## Lists Like This

- [Seed AI investors 2,922](https://millionrounds.com/lists/seed-ai-investors)
- [Series A AI investors 2,490](https://millionrounds.com/lists/series-a-ai-investors)
- [Series B AI investors 1,557](https://millionrounds.com/lists/series-b-ai-investors)
- [Pre-seed AI investors 1,286](https://millionrounds.com/lists/pre-seed-ai-investors)
- [Growth AI investors 1,186](https://millionrounds.com/lists/growth-ai-investors)
- [Series A fintech investors 950](https://millionrounds.com/lists/series-a-fintech-investors)
- [Series C AI investors 930](https://millionrounds.com/lists/series-c-ai-investors)
- [Seed fintech investors 925](https://millionrounds.com/lists/seed-fintech-investors)
- [Series A biotech investors 650](https://millionrounds.com/lists/series-a-biotech-investors)

[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
- 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
- Energy: A Beginner's Guide Vaclav Smil · 2006 3.99 from 1,520 ratings on Goodreads Climate and energy About the book As Einstein pointed out in his famous equation, E=MC2, all matter can be described as energy. It is everywhere; it is everything. In this engaging book, prolific author and academic Vaclav Smil provides an introduction to the far-reaching term and gives the reader a greater… On AmazonListen on Audible

More books for founders and investors on the [Reading List](https://millionrounds.com/reading-list?role=founder&industry=climate&stage=scaling).

As an Amazon Associate we earn from qualifying purchases.

## Quick answers about series C cleantech investors

### Who are the most active series C cleantech investors?

By cheques observed, the most active are Andreessen Horowitz, Lightspeed Venture Partners, Qiming Venture Partners, B Capital and Endeavor Catalyst.

### How many series C cleantech investors are there?

52 are on record. 90% made an investment in the last 12 months and 63% have led a round.

### Which stages do series C cleantech investors back?

Of the rounds with a named stage in the last 12 months, mostly Series A (23%) and Seed (18%).

### How big are the rounds series C cleantech investors join?

The typical (median) round among the leading investors here is $30M.

### Which sectors do series C cleantech investors back most?

In the last 12 months, mostly AI, Fintech and Biotech.

### Which series C cleantech investors lead the most rounds?

Andreessen Horowitz (114 led), Lightspeed Venture Partners (83 led) and Ribbit Capital (29 led).

### Where are series C cleantech investors based?

Among the most active, most are based in the United States (12), the United Kingdom (3) and India (2).

### What have series C cleantech investors invested in recently?

Recent rounds include Humble Robotics (Series A, Nov 2026, with Energy Impact Partners), Alethio Therapeutics (Series A, Nov 2026, with Oxford Science Enterprises) and Zipline (Growth, Nov 2026, with Valor Equity Partners).

Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)