Investors / United States / Clean Energy Ventures
Clean Energy Ventures
Venture capital · Boston, MA, United States · North America
Clean Energy Ventures is a venture capital firm that invests in early-stage climate technology companies built on proven science. It manages over $400 million across two funds and works closely with founders, co-developing IP, building commercial strategy, and taking active board seats.
Invests inIndustrial & ManufacturingEducation
In its own wordsclimate techhard techdecarbonizationenergydeep techemissions
Your fit with Clean Energy Ventures
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See how your round matches what it backs, point by point.
Or find every investor that fitsClean Energy Ventures lists 70 checked portfolio companies on its own site and is named in 5 funding rounds, 2 of them as lead. Its most frequent entry is Seed, 40% of the companies with a known first round. Its largest themes are Industrial & Manufacturing (31%), Education (22%) and Fintech (9%). 61% of its companies are based in United States. It invests most often alongside Elemental Impact, Collaborative Fund and Creative Destruction Lab.
Counts come from funding rounds that name Clean Energy Ventures, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Round figures show recent activity, not Clean Energy Ventures' whole history. Rounds on record name 5 companies; its own site lists 70. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Entry stage
share of companies by the stage of its first roundClean Energy Ventures does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 40% |
| Series A | 20% |
| Series B | 40% |
| Growth | 0% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 0 | 0 |
| '24 | 0 | 0 |
| '25 | 3 | 1 |
| '26 | 2 | 1 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 91th | 70 companies |
| Recent activity | 76th | 3 rounds in 12 months |
| Early stage | 66th | 40% of entries at pre-seed or seed |
| Evidence | 61th | 4% of companies confirmed by a round |
| Sector focus | 55th | 31% in its largest sector |
| Reach | 95th | 10 countries |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Industrial & Manufacturing | 31% | 7% |
| Education | 22% | 7% |
| Fintech | 9% | 12% |
| Climate & Energy | 8% | 1% |
| Real Estate & Construction | 7% | 3% |
| AI & Machine Learning | 6% | 18% |
| E-commerce & Marketplaces | 5% | 6% |
| Healthcare & Biotech | 5% | 15% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Elemental Impact | 4 |
| Collaborative Fund | 3 |
| Creative Destruction Lab | 3 |
| Aramco Ventures | 2 |
| Autodesk Foundation | 2 |
| Farvatn Venture | 2 |
| Helios Climate Ventures | 2 |
| NextFab Ventures | 2 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers6796%
- No longer answers00%
- Points to another company34%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Co-investor network
who it backs companies with, and who they back togetherAll co-investors or Compare portfolios with Elemental Impact
Compare Clean Energy Ventures head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Recent portfolio activity
when companies last raised with Clean Energy Ventures| Date | Company | Stage |
|---|---|---|
| 29 Sept 2026 | Series A | |
| 15 Sept 2026 | Series B Led | |
| 29 Sept 2025 | Series B | |
| 10 Feb 2025 | Seed Led |
Round details for Clean Energy Ventures
Amounts, full round histories and every co-investor in Clean Energy Ventures' rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
70 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Advanced Ionics invents and produces electrolyzers for green hydrogen production | Industrial & ManufacturingClimate & Energy | Portfolio page | ||
| Aepnus transforms industrial waste streams into critical chemicals using electrochemical technology | Industrial & Manufacturing | Portfolio page | ||
| Antares Ventures invests in science- and engineering-led companies to scale breakthrough science into Asia's markets. | Industrial & ManufacturingFintech | Portfolio page | ||
| Aqua Membranes manufactures spiral-wound membrane elements for industrial reverse osmosis systems | Industrial & ManufacturingFood & Agriculture | Portfolio page | ||
| Portfolio page | ||||
| AXIS Specialty provides various insurance services, including accident and health, casualty, and specialty insurance | FintechHealthcare & Biotech | Portfolio page | ||
| Ayrton Energy offers practical solutions for the hydrogen supply chain using a proprietary liquid organic hydrogen carrier and electrochemistry. | EducationIndustrial & Manufacturing | Portfolio page | ||
| Boston Materials delivers high-performance thermal interfaces necessary to unlock semiconductor scaling | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Portfolio page | ||||
| Branch Energy installs, owns, and operates energy storage systems on commercial properties and pays the property owners for hosting them | EducationReal Estate & Construction | Sept 2026Series B | Page + round | |
| The company invests and grants capital to scale and accelerate innovative solutions in food and agriculture, energy, and oceans | Food & AgricultureOther | Portfolio page | ||
| Carbon Upcycling converts locally sourced industrial byproducts into clean, high-quality cementitious materials | Industrial & ManufacturingClimate & Energy | Portfolio page | ||
| Cerberus is an alternative investment advisor with assets across credit, private equity, and real estate platforms | FintechReal Estate & Construction | Portfolio page | ||
| We provide seed capital and management expertise to climate tech start-ups. | Climate & EnergyFintech | Portfolio page | ||
| Portfolio page | ||||
| Portfolio page | ||||
| The company provides building materials | Industrial & Manufacturing | Portfolio page | ||
| DG Matrix manufactures solid-state transformers and provides solutions for AI data centers, utility, and fleet electrification. | AI & Machine LearningIndustrial & Manufacturing | Portfolio page | ||
| Doral Energy-Tech Ventures invests in cutting-edge technologies and entrepreneurs that align with their core business activities in energy | EducationIndustrial & Manufacturing | Portfolio page | ||
| The company produces, manages and distributes energy, with a focus on renewables, decarbonisation and working for a greener future. | EducationHealthcare & Biotech | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- cleanenergyventures.com
- Last read
- 5 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 10 Feb 2025
- Companies checked
- 70
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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