# Series B climate Tech investors (2026 list)

> 160 series B climate Tech investors, 82% active in the last 12 months. Led by Techstars, Alumni Ventures, Plug and Play. Ranked by what they funded.

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

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

# Series B climate Tech investors

Updated 7 November 2026

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

[See all 160 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-b-climate-investors)The top 25

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

**3,182** cheques in 12 months *-17%* against the market

**$24M** median round they joined *+201%* against the market median

**82%** wrote a cheque in 12 months

**57%** have led a round

## The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

- 1 [Techstars](https://millionrounds.com/fund/techstars) *Deploying now* VC firm · United States **2,989** **$1.2M** median round **Nov 2026** last seen
- 2 [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) *Deploying now* VC firm · United States **1,598** **$12M** median round **Nov 2026** last seen
- 3 [Plug and Play](https://millionrounds.com/fund/plug-and-play) *Deploying now* Accelerator · United States **1,561** **$5M** median round **Nov 2026** last seen
- 4 [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
- 5 [Gaingels](https://millionrounds.com/fund/gaingels) *Deploying now* Private equity · United States **1,010** **$8M** median round **Oct 2026** last seen
- 6 [EIC Accelerator](https://millionrounds.com/fund/eic-accelerator) *Deploying now* Government · European Union **875** **$4.3M** median round **Oct 2026** last seen
- 7 [Right Side Capital Management](https://millionrounds.com/fund/right-side-capital-management) *Deploying now* VC firm · United States **834** **$875K** median round **Sept 2026** last seen
- 8 [Bossa Invest](https://millionrounds.com/fund/bossa-invest) *Deploying now* VC firm · Brazil **657** **$6.7M** median round **Oct 2026** last seen
- 9 [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) *Deploying now* Corporate VC · United States **649** **$26M** median round **Nov 2026** last seen
- 10 [Korea Tech Incubator Program For Startup](https://millionrounds.com/fund/tips-program) *Deploying now* Government · South Korea **597** **$2.1M** median round **Sept 2026** last seen
- 11 [SVB Capital](https://millionrounds.com/fund/svb-capital) *Deploying now* VC firm · United States **564** **$20M** median round **Oct 2026** last seen
- 12 [Flybridge](https://millionrounds.com/fund/flybridge) *Deploying now* VC firm · United States **534** **$5M** median round **Sept 2026** last seen
- 13 [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
- 14 [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) *Deploying now* VC firm · United States **524** **$27M** median round **Nov 2026** last seen
- 15 [HSG](https://millionrounds.com/fund/hsg) *Deploying now* VC firm · Hong Kong SAR China **498** **$31M** median round **Oct 2026** last seen
- 16 [B Capital](https://millionrounds.com/fund/b-capital) *Deploying now* VC firm · United States **495** **$14M** median round **Oct 2026** last seen
- 17 [Mitsubishi UFJ Capital](https://millionrounds.com/fund/mitsubishi-ufj-capital-co-ltd) *Deploying now* VC firm · Japan **493** **$4.7M** median round **Nov 2026** last seen
- 18 [DCVC](https://millionrounds.com/fund/data-collective) *Deploying now* VC firm · United States **431** **$29M** median round **Nov 2026** last seen
- 19 [Creative Destruction Lab](https://millionrounds.com/fund/creative-destruction-lab) *Deploying now* Accelerator · Canada **427** **$3M** median round **Sept 2026** last seen
- 20 [Speedinvest](https://millionrounds.com/fund/speedinvest) *Deploying now* VC firm · Austria **345** **$6.7M** median round **Nov 2026** last seen
- 21 [Upfront Ventures](https://millionrounds.com/fund/upfront-ventures) *Deploying now* VC firm · United States **338** **$10M** median round **Oct 2026** last seen
- 22 [FirstMark](https://millionrounds.com/fund/firstmark) *Deploying now* VC firm · United States **319** **$20M** median round **Oct 2026** last seen
- 23 [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) *Deploying now* VC firm · United States **305** **$7.5M** median round **Oct 2026** last seen
- 24 [Quiet Capital](https://millionrounds.com/fund/quiet-capital) *Deploying now* VC firm · United States **283** **$17M** median round **Oct 2026** last seen
- 25 [IVC](https://millionrounds.com/fund/ivc) *Deploying now* VC firm · Taiwan **282** **$3.3M** median round **Sept 2026** last seen

**135 more on this list**

All 160 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-b-climate-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)
- **6** Nov **[Harbinger](https://millionrounds.com/company/harbinger)** Series D+ · $240M *With* [Squarepoint Capital](https://millionrounds.com/fund/squarepoint-capital)
- **5** Nov **[firmly](https://millionrounds.com/company/firmly)** Series A · $15M *Led by* [Squarepoint Capital](https://millionrounds.com/fund/squarepoint-capital)
- **5** Nov **[Circularity Fuels](https://millionrounds.com/company/circularity-fuels)** Seed · $7M *Led by* [DCVC](https://millionrounds.com/fund/data-collective)
- **5** Nov **[RadianX](https://millionrounds.com/company/radianx)** Seed · $9M *With* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund)
- **5** Nov **[Zipline](https://millionrounds.com/company/zipline)** Growth · $1.5B *With* [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures)

## Stages This Year

2,612 rounds

- Venture **21%**
- Series A **19%**
- Seed **17%**
- Series B **10%**
- Debt **6%**
- Other **27%**

## What They Backed

Sectors, last 12 months

- AI **946**
- Biotech **179**
- Healthcare **163**
- Energy **163**
- Fintech **132**
- Big Data & Analytics **120**

## Cheques by Quarter

Led Joined

1,016 Q1 25

962 Q2 25

1,066 Q3 25

1,094 Q4 25

1,030 Q1 26

862 Q2 26

720 Q3 26

165 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 B climate Tech investors

### Who are the most active series B climate Tech investors?

By cheques observed, the most active are Techstars, Alumni Ventures, Plug and Play, Lightspeed Venture Partners and Gaingels.

### How many series B climate Tech investors are there?

160 are on record. 82% made an investment in the last 12 months and 57% have led a round.

### Which stages do series B climate Tech investors back?

Of the rounds with a named stage in the last 12 months, mostly Series A (27%) and Seed (24%).

### How big are the rounds series B climate Tech investors join?

The typical (median) round among the leading investors here is $8M.

### Which sectors do series B climate Tech investors back most?

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

### Which series B climate Tech investors lead the most rounds?

Lightspeed Venture Partners (83 led), Bain Capital Ventures (31 led) and FirstMark (18 led).

### Where are series B climate Tech investors based?

Among the most active, most are based in the United States (16), Hong Kong SAR China (2) and European Union (1).

### What have series B climate Tech investors invested in recently?

Recent rounds include Humble Robotics (Series A, Nov 2026, with Energy Impact Partners), Harbinger (Series D+, Nov 2026, with Squarepoint Capital) and firmly (Series A, Nov 2026, with Squarepoint Capital).

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