# Clean Energy Ventures: portfolio, investments and team

> Clean Energy Ventures is a vc firm based in United States. 42 investments on record, 12 in the last 12 months, latest Sept 2026.

Source: https://millionrounds.com/fund/clean-energy-ventures (Millionrounds; every figure on the page links to its filing or article)

United States · [Investor](https://millionrounds.com/investors)

# Clean Energy Ventures

Last cheque observed Sep 2026; 42 cheques on record.

Email

Deploying now VC firm

Seed Series A Series B Energy Clean Energy Photovoltaic

Follow Clean Energy Ventures and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Fclean-energy-ventures)

Deploying now

**63%** of best year **12** **cheques in 12 months**, 42 on record

Since the last cheque **60** days **00** hrs **00** min **00** sec

Median round **$10M** Cheque size, as they say **$15K – $5.0M** Rounds led **1 of 42** Sole investor **3 rounds** Mostly in **United States, 87%**

Pitch Clean Energy Ventures

## Clean Energy Ventures highlights

- 01 12 cheques in the last 12 months
- 02 Mostly Venture and Seed: 66% of its rounds
- 03 Sole investor in 3 rounds, median $7.6M

## What they do

> We back founders turning breakthrough climate innovations into scaling companies, with decades of engineering and commercial expertise at seed and Series A. From their own website

- **Type:** VC firm (from a list, unverified)
- **Cheque size:** $15K – $5.0M as they say
- **Stages:** Seed Series A Series B Growth
- **Sectors:** Energy Clean Energy Photovoltaic
- **Based in:** Boston, United States
- **Cold pitches:** Not accepted

## The record

Every round we can evidence, newest first **42 appearances**

- **2026** 9 rounds
- **Sept** **[Branch Energy](https://millionrounds.com/company/branch-energy)** Series B · US **$33M** With 2 others
- **Sept** **[LineVision](https://millionrounds.com/company/linevision)** Series D · US **$38M** With 2 others
- **Sept** **[Hertha Metals](https://millionrounds.com/company/hertha-metals)** Debt · US **$69M** With 4 others
- **Jun** **[NexDash](https://millionrounds.com/company/nexdash)** Seed · DE **$2.9M** With 1 other
- **Apr** **[Lithios](https://millionrounds.com/company/lithios)** Grant · US **$20M** With 3 others
- **Apr** **[Rebound Technologies](https://millionrounds.com/company/rebound-technologies)** Venture · US **$2.0M** With 2 others
- **Mar** **[MacroCycle Technologies](https://millionrounds.com/company/macrocycle-technologies)** Seed · US **$3.0M** With 5 others
- **Feb** **[DG Matrix](https://millionrounds.com/company/dg-matrix)** Series A · US · TechCrunch **$60M** With 8 others
- **Feb** **[Aepnus Technology](https://millionrounds.com/company/aepnus-technology)** Venture · US **Undisclosed** With 2 others
- **2025** 15 rounds
- **Dec** **[Boston Materials](https://millionrounds.com/company/boston-materials)** Venture · US **Undisclosed** With 4 others
- **Nov** **[NexDash](https://millionrounds.com/company/nexdash)** Seed · DE · Silicon Canals **$5.8M** With 1 other
- **Nov** **[Queens Carbon](https://millionrounds.com/company/queens-carbon)** Venture · US **Undisclosed** With 2 others
- **Sept** **[Electrified Thermal Solutions](https://millionrounds.com/company/electrified-thermal-solutions)** Venture · US **Undisclosed** Sole investor
- **Sept** **[OXCCU](https://millionrounds.com/company/oxccu)** Series B · GB **$28M** With 2 others
- **Jul** **[Hertha Metals](https://millionrounds.com/company/hertha-metals)** Venture · US **$17M** With 4 others
- **May** **[Exterra Carbon Solutions](https://millionrounds.com/company/exterra-carbon-solutions)** Series A · CA **$15M** With 1 other
- **Apr** **[Queens Carbon](https://millionrounds.com/company/queens-carbon)** Seed · US **$10M** With 2 others
- **Apr** **[Ayrton Energy](https://millionrounds.com/company/ayrton-energy)** Grant · CA **$480K** With 3 others
- **Mar** **[DG Matrix](https://millionrounds.com/company/dg-matrix)** Seed · US **$20M** With 1 other
- **Feb** **[MacroCycle](https://millionrounds.com/company/macrocycle)** Seed · US **$6.5M** With 4 others
- **Jan** **[NitroFix](https://millionrounds.com/company/nitrofix)** Venture **Undisclosed** With 1 other
- **Jan** **[Volexion](https://millionrounds.com/company/volexion)** Venture · US **Undisclosed** With 2 others
- **Jan** **[Ndustrial](https://millionrounds.com/company/ndustrial)** Venture · US **Undisclosed** With 2 others
- **Jan** **[Advanced Ionics](https://millionrounds.com/company/advanced-ionics)** Venture · US **$6.7M** Sole investor
- **2024** 10 rounds
- **Dec** **[ConnectDER](https://millionrounds.com/company/connectder)** Series D · US **$35M** With 3 others
- **Nov** **[Transaera](https://millionrounds.com/company/transaera)** Seed · US · TechCrunch **$8.2M** *Led*
- **Nov** **[Boston Materials](https://millionrounds.com/company/boston-materials)** Series A · US **$14M** With 4 others
- **Oct** **[Lithios](https://millionrounds.com/company/lithios)** Seed · US **$10M** With 3 others
- **Oct** **[Aqua Membranes](https://millionrounds.com/company/aqua-membranes)** Series B · US **$4.2M** With 1 other
- **Oct** **[REsurety](https://millionrounds.com/company/resurety)** Series C · US **$32M** With 2 others
- **Sept** **[Evari](https://millionrounds.com/company/evari)** Grant · US **$1.7M** With 2 others
- **Sept** **[Bodhi](https://millionrounds.com/company/bodhi)** Venture · US **Undisclosed** With 6 others
- **Jun** **[Pearl Certification](https://millionrounds.com/company/pearl-certification)** Venture · US **$6.7M** With 1 other
- **Jun** **[Travertine](https://millionrounds.com/company/travertine)** Venture · US **$8.5M** Sole investor
- **2023** 5 rounds
- **Dec** **[Nth Cycle](https://millionrounds.com/company/nth-cycle)** Series B · US **$37M** With 4 others
- **Nov** **[SparkMeter](https://millionrounds.com/company/sparkmeter)** Venture · US **$5.0M** With 3 others
- **May** **[Copper Labs](https://millionrounds.com/company/copper-labs)** Venture · US **Undisclosed** With 3 others
- **Mar** **[ClearFlame Engines](https://millionrounds.com/company/clearflame-engines)** Series B · US **$30M** With 2 others
- **Feb** **[ClearTrace](https://millionrounds.com/company/cleartrace)** Venture · US **Undisclosed** With 1 other
- **2022** 1 round
- **Oct** **[LineVision](https://millionrounds.com/company/linevision)** Series C · US **$33M** With 2 others

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

## The team

We hold **21** people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.

## What the register says

From the firm's own filings with the SEC, which it must file accurately by law

**Registered** investment adviser full reporting to the SEC

- **Legal name:** Clean Energy Venture Management, LLC
- **SEC number:** CRD 292055

## What they claim to have backed

From their own portfolio page (on their website)

**23** of 60 we have independently watched raise

[Aqua Membranes](https://millionrounds.com/company/aqua-membranes)[Carbon Upcycling](https://millionrounds.com/company/carbon-upcycling)[ClearTrace](https://millionrounds.com/company/cleartrace)[ConnectDER](https://millionrounds.com/company/connectder)[Evari](https://millionrounds.com/company/evari)[Exterra Carbon Solutions](https://millionrounds.com/company/exterra-carbon-solutions)[FutureProof](https://millionrounds.com/company/futureproof)[Good](https://millionrounds.com/company/good)[Hertha Metals](https://millionrounds.com/company/hertha-metals)[LineVision](https://millionrounds.com/company/linevision)[Lineage Logistics](https://millionrounds.com/company/lineage-logistics)[Ndustrial](https://millionrounds.com/company/ndustrial)[NexDash](https://millionrounds.com/company/nexdash)[Noon Energy](https://millionrounds.com/company/noon-energy)[Nth Cycle](https://millionrounds.com/company/nth-cycle)[OXCCU](https://millionrounds.com/company/oxccu)[Pearl](https://millionrounds.com/company/pearl-certification)[Queens Carbon](https://millionrounds.com/company/queens-carbon)[Resurety](https://millionrounds.com/company/resurety)[SunDensity](https://millionrounds.com/company/sundensity)[Tenaska](https://millionrounds.com/company/tenaska)[Transaera](https://millionrounds.com/company/transaera)[Travertine](https://millionrounds.com/company/travertine) ABB ACCELR8 ACVC Partners AXIS Specialty Active Impact Investments Advanced Ionics Aepnus Amplify Capital Antares Ventures Aramco Ventures Sustainability Fund Arcelor Mittal XCarb At One Ventures Autodesk Foundation BDC Capital Boston Materials Brookfield Builders Vision Burnt Island Ventures Buzzi Unicem USA CEMEX Ventures CEVG CRH Carbon Drawdown Collective Caterpillar Cerberus Ventures Chevron Technology Ventures Clearsky Climate Innovation Capital Climate Investment Closed Loop Ventures Decarbonization Partners Doral Energy-Tech Ventures ENGIE EPS Ventures Electrifiedthermal Emerson Collective Engine Ventures and 69 more

Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.

## The cheque

Seed Series A Series B

Median round joined **$10M** the round, not its cheque Alone, median **$7.6M**

Led 1 of 42 rounds **2%**

- **Said size:** $15K – $5.0M
- **Sole investor:** 3 rounds
- **Last cheque:** Sept 2026

Rounds by stage said on their site

- Venture *17*
- Seed said *8*
- Series B said *5*
- Series A said *3*
- Grant *3*
- Series C *2*
- Growth said *-*

Cheques by month Led Joined

Nov 2023 Oct 2026

Often in the room with

- [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) 9
- [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) 8
- [Elemental Impact](https://millionrounds.com/fund/elemental-impact) 5
- [US Department of Energy](https://millionrounds.com/fund/u-s-department-of-energy) 5
- [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) 4
- [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) 3

**Pitching Clean Energy Ventures?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque.

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## Who they invest alongside

The investors most often in the same rounds as Clean Energy Ventures. A count of rooms they were both in, not a relationship either has claimed.

[**National Science Foundation** Government **9** rounds together](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno)[**Breakthrough Energy** VC firm **8** rounds together](https://millionrounds.com/fund/breakthrough-energy)[**Elemental Impact** VC firm **5** rounds together](https://millionrounds.com/fund/elemental-impact)[**US Department of Energy** Government **5** rounds together](https://millionrounds.com/fund/u-s-department-of-energy)[**Collaborative Fund** VC firm **4** rounds together](https://millionrounds.com/fund/collaborative-fund)[**Lowercarbon Capital** VC firm **3** rounds together](https://millionrounds.com/fund/lowercarbon-capital)[**S2G Investments** Growth equity **3** rounds together](https://millionrounds.com/fund/s2g-investments)[**Chevron Technology Ventures** Corporate VC **2** rounds together](https://millionrounds.com/fund/chevron-technology-ventures)[**Good Growth Capital** VC firm **2** rounds together](https://millionrounds.com/fund/good-growth-capital)[**Google for Startups** Accelerator **2** rounds together](https://millionrounds.com/fund/google-for-startups)[**KdT Ventures** VC firm **2** rounds together](https://millionrounds.com/fund/kdt-ventures)[**Khosla Ventures** VC firm **2** rounds together](https://millionrounds.com/fund/khosla-ventures)

## Recently backed

The latest companies Clean Energy Ventures put money into.

[**Branch Energy** $33M · Sept 2026](https://millionrounds.com/company/branch-energy)[**LineVision** $38M · Sept 2026](https://millionrounds.com/company/linevision)[**NexDash** $2.9M · Jun 2026](https://millionrounds.com/company/nexdash)[**Lithios** $20M · Apr 2026](https://millionrounds.com/company/lithios)[**MacroCycle Technologies** $3.0M · Mar 2026](https://millionrounds.com/company/macrocycle-technologies)[**DG Matrix** $60M · Feb 2026](https://millionrounds.com/company/dg-matrix)

## On podcasts

1 episode naming Clean Energy Ventures in the title.

- [Inevitable](https://millionrounds.com/podcasts/inevitable) 28 Jun 2023 · 58 min Capital Series: Temple Fennell, Clean Energy Ventures With [Temple Fennell](https://millionrounds.com/person/temple-fennell) Mentions [Clean Energy Ventures](https://millionrounds.com/fund/clean-energy-ventures) Apple PodcastsShow page

## Quick answers about Clean Energy Ventures

### What does Clean Energy Ventures invest in?

Clean Energy Ventures invests most often at Venture and Seed (66% of the rounds on record), in sectors such as Energy, Clean Energy and Photovoltaic.

### How active is Clean Energy Ventures?

42 investments on record, 12 of them in the last 12 months, and it led 1. The most recent was in Sept 2026.

### What has Clean Energy Ventures invested in recently?

Its most recent investments on record: Branch Energy (Series B, Sept 2026), LineVision (Series D, Sept 2026) and Hertha Metals (Debt, Sept 2026).

### How big are Clean Energy Ventures's cheques?

The median round it joins is $10M. It says it writes cheques of $15K to $5.0M.

### Does Clean Energy Ventures lead rounds?

Sometimes: it led 1 of its 42 investments on record (2%).

### Where does Clean Energy Ventures invest?

Most of the companies it backs are in the United States (87%), Germany (5%) and Canada (5%).

### Is Clean Energy Ventures investing now?

Yes: it is actively investing, with 12 investments in the last 12 months.

### Who does Clean Energy Ventures invest alongside?

Most often National Science Foundation (9 rounds together), Breakthrough Energy (8 rounds together) and Elemental Impact (5 rounds together).

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