# Top 44 Carbon Removal Startups Worldwide by Funding (2026)

> The 44 best-funded carbon removal startups worldwide, ranked by total funding raised: $1.0B combined.

Source: https://millionrounds.com/top-lists/carbon-removal-startups (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Chestnut Carbon** Chestnut Carbon is an environmental engineering company that offers carbon removal and project development services.](https://millionrounds.com/company/chestnut-carbon) Chestnut Carbon is an environmental engineering company that offers carbon removal and project development services. *Founded* 2021 New York, United States **$250M** last round Sept 2025
- 2 [**Mombak** MOMBAK is a Brazilian carbon removal startup founded in 2021 by Gabriel Silva and Peter Fernandez, headquartered in São Paulo.](https://millionrounds.com/company/mombak) MOMBAK is a Brazilian carbon removal startup founded in 2021 by Gabriel Silva and Peter Fernandez, headquartered in São Paulo. *Founded* 2021 Sao Paulo, Brazil **$86M** last round Sept 2026
- 3 [**Carbonex** Carbonex.world specializes in Carbon Removal Services, as well as the Preservation and Restoration of Critical Ecosystems.](https://millionrounds.com/company/carbonex) Carbonex.world specializes in Carbon Removal Services, as well as the Preservation and Restoration of Critical Ecosystems. *Founded* 2023 Tokyo, France **$84M** last round Jul 2018
- 4 [**Vaulted Deep** Vaulted Deep is a Houston-based company specializing in carbon removal and waste management.](https://millionrounds.com/company/vaulted-deep) Vaulted Deep is a Houston-based company specializing in carbon removal and waste management. *Founded* 2023 Houston, United States **$67M** last round Sept 2026
- 5 [**280 Earth** 280 Earth is scaling carbon removal technology to meet the climate crisis head on.](https://millionrounds.com/company/280-earth) 280 Earth is scaling carbon removal technology to meet the climate crisis head on. *Founded* 2018 The Dalles, United States **$50M** last round May 2024
- 6 [**Isometric** Isometric is a London-based certification platform focused on the industrial economy, specializing in carbon removal registry and science services.](https://millionrounds.com/company/isometric) Isometric is a London-based certification platform focused on the industrial economy, specializing in carbon removal registry and science services. *Founded* 2022 London, United Kingdom **$50M** last round Sept 2026
- 7 [**Deep Sky** Deep Sky is a developer of a CO2 removal infrastructure designed to reduce the carbon footprint.](https://millionrounds.com/company/deep-sky) Deep Sky is a developer of a CO2 removal infrastructure designed to reduce the carbon footprint. *Founded* 2022 Montreal, Canada **$40M** last round Jun 2026
- 8 [**Planetary** Planetary develops ocean-based carbon removal technology to accelerate the natural carbon cycle.](https://millionrounds.com/company/planetary) Planetary develops ocean-based carbon removal technology to accelerate the natural carbon cycle. *Founded* 2019 Switzerland **$35M** last round Apr 2026
- 9 [**Climeworks** Climeworks AG is a Swiss environmental technology company specializing in Carbon Dioxide Removal (CDR) through its innovative Direct Air Capture (DAC) technology.](https://millionrounds.com/company/climeworks) Climeworks AG is a Swiss environmental technology company specializing in Carbon Dioxide Removal (CDR) through its innovative Direct Air Capture (DAC) technology. *Founded* 2009 Opfikon, Switzerland **$34M** last round Aug 2018
- 10 [**Mangrove Systems** Mangrove Systems is a Toronto-based software company specializing in digital measurement, reporting, and verification (dMRV) solutions for carbon dioxide remova](https://millionrounds.com/company/mangrove-systems) Mangrove Systems is a Toronto-based software company specializing in digital measurement, reporting, and verification (dMRV) solutions for carbon dioxide remova *Founded* 2002 Toronto, United States **$33M** last round Aug 2006
- 11 [**Spiritus** Spiritus is a climate technology company based in White Rock, New Mexico, specializing in Direct Air Capture (DAC) technology aimed at low-cost carbon dioxide r](https://millionrounds.com/company/spiritus) Spiritus is a climate technology company based in White Rock, New Mexico, specializing in Direct Air Capture (DAC) technology aimed at low-cost carbon dioxide r *Founded* 2021 Zagreb, Croatia **$30M** last round Mar 2025
- 12 [**Graphyte** Combining photosynthesis with practical engineering, Graphyte's Carbon Casting technology provides an immediate pathway for billions of tons of low-cost, durabl](https://millionrounds.com/company/graphyte) Combining photosynthesis with practical engineering, Graphyte's Carbon Casting technology provides an immediate pathway for billions of tons of low-cost, durabl *Founded* - Memphis, United States **$30M** last round Jul 2024
- 13 [**Novocarbo** Novocarbo GmbH is a German sustainability technology company based in Hamburg, founded in 2017 by Caspar Ziegner.](https://millionrounds.com/company/novocarbo) Novocarbo GmbH is a German sustainability technology company based in Hamburg, founded in 2017 by Caspar Ziegner. *Founded* 2017 Hamburg, Germany **$27M** last round Mar 2024
- 14 [**Mast Reforestation** Mast Reforestation is a leading company in North America focused on post-wildfire reforestation and carbon removal.](https://millionrounds.com/company/mast-reforestation) Mast Reforestation is a leading company in North America focused on post-wildfire reforestation and carbon removal. *Founded* 2016 Seattle, United States **$25M** last round Feb 2025
- 15 [**Gigablue** Gigablue is a marine carbon dioxide removal (mCDR) company based in New York, NY, founded in 2022.](https://millionrounds.com/company/gigablue) Gigablue is a marine carbon dioxide removal (mCDR) company based in New York, NY, founded in 2022. *Founded* 2022 New York, United States **$20M** last round Jan 2026
- 16 [**Carbo Culture** Carbo Culture is a Finnish-American climate technology company focused on carbon dioxide removal through the production of stable biochar.](https://millionrounds.com/company/carbo-culture) Carbo Culture is a Finnish-American climate technology company focused on carbon dioxide removal through the production of stable biochar. *Founded* 2017 Helsinki, Finland **$18M** last round Nov 2023
- 17 [**Supercritical** Supercritical Tech Ltd., based in London, is a carbon removal marketplace founded in 2021.](https://millionrounds.com/company/supercritical) Supercritical Tech Ltd., based in London, is a carbon removal marketplace founded in 2021. *Founded* - London, United Kingdom **$13M** last round May 2026
- 18 [**CarbonPool** CarbonPool is an environmental services and InsurTech startup based in Zurich, founded in 2023.](https://millionrounds.com/company/carbonpool) CarbonPool is an environmental services and InsurTech startup based in Zurich, founded in 2023. *Founded* 2023 Zurich, Switzerland **$12M** last round Jan 2024
- 19 [**Brilliant Planet** Brilliant Planet is a climate technology company based in London, founded in 2013.](https://millionrounds.com/company/brilliant-planet) Brilliant Planet is a climate technology company based in London, founded in 2013. *Founded* 2013 Harpenden, United Kingdom **$12M** last round Apr 2022
- 20 [**Alt Carbon** Alt Carbon is a Kolkata-based deep-tech science and data company founded in 2023.](https://millionrounds.com/company/alt-carbon) Alt Carbon is a Kolkata-based deep-tech science and data company founded in 2023. *Founded* 2023 Bengaluru, India **$12M** last round May 2025
- 21 [**Equatic** Equatic uses a seawater electrolysis process that enhances the ocean's capacity to absorb and store large quantities of carbon dioxide.](https://millionrounds.com/company/equatic) Equatic uses a seawater electrolysis process that enhances the ocean's capacity to absorb and store large quantities of carbon dioxide. *Founded* 2021 Torrance, United States **$12M** last round Aug 2025
- 22 [**Brineworks** Brineworks is a climate technology startup based in Amsterdam, founded in 2023.](https://millionrounds.com/company/brineworks) Brineworks is a climate technology startup based in Amsterdam, founded in 2023. *Founded* 2023 Amsterdam, Netherlands **$8.0M** last round Sept 2025
- 23 [**Carba** Carba, Inc.](https://millionrounds.com/company/carba) Carba, Inc. *Founded* 2021 Minneapolis, United States **$6.0M** last round Dec 2025
- 24 [**Carbicrete** CarbiCrete is a carbon removal technology that develops innovative, low-cost building solutions that reduce greenhouse gas emissions.](https://millionrounds.com/company/carbicrete) CarbiCrete is a carbon removal technology that develops innovative, low-cost building solutions that reduce greenhouse gas emissions. *Founded* 2016 Montréal, Canada **$5.7M** last round Jun 2026
- 25 [**ReCarber** ReCarber is a Swedish climate technology company founded in 2023, based in Stockholm.](https://millionrounds.com/company/recarber) ReCarber is a Swedish climate technology company founded in 2023, based in Stockholm. *Founded* 2023 Stockholm, Sweden **$5.3M** last round Feb 2025
- 26 [**Octavia Carbon** Octavia Carbon is a Direct Air Capture (DAC) company based in Kenya.](https://millionrounds.com/company/octavia-carbon) Octavia Carbon is a Direct Air Capture (DAC) company based in Kenya. *Founded* 2022 Kenya **$5.0M** last round Oct 2024
- 27 [**Vycarb** Vycarb is a climate technology company based in Brooklyn, founded in 2022.](https://millionrounds.com/company/vycarb) Vycarb is a climate technology company based in Brooklyn, founded in 2022. *Founded* 2022 United States **$5.0M** last round Oct 2025
- 28 [**Klimate** Klimate is a Copenhagen-based B2B Carbon Asset Manager founded in 2020.](https://millionrounds.com/company/klimate) Klimate is a Copenhagen-based B2B Carbon Asset Manager founded in 2020. *Founded* 2020 Copenhagen, Denmark **$3.7M** last round Oct 2023
- 29 [**Carbonaires** Carbonaires is a London-based carbon finance and asset management company founded in 2021.](https://millionrounds.com/company/carbonaires) Carbonaires is a London-based carbon finance and asset management company founded in 2021. *Founded* 2021 London, United Kingdom **$3.7M** last round Jul 2026
- 30 [**Covalent** Covalent Climate Tech, Inc.](https://millionrounds.com/company/covalent) Covalent Climate Tech, Inc. *Founded* 2021 San Francisco, Canada **$3.6M** last round Jun 2024
- 31 [**BIOSORRA** BIOSORRA is a female-led climate-tech company based in Nairobi, Kenya, founded in 2021-2022.](https://millionrounds.com/company/biosorra) BIOSORRA is a female-led climate-tech company based in Nairobi, Kenya, founded in 2021-2022. *Founded* 2021 Nairobi, United States **$3.5M** last round Oct 2025
- 32 [**Cella** Cella is a New York-based climate technology startup founded in 2022, focused on permanent carbon dioxide removal through geologic carbon sequestration and carb](https://millionrounds.com/company/cella) Cella is a New York-based climate technology startup founded in 2022, focused on permanent carbon dioxide removal through geologic carbon sequestration and carb *Founded* - New York, United States **$3.3M** last round Jun 2023
- 33 [**Cotierra** Cotierra is a Swiss-based climate-tech startup founded in July 2023 and headquartered in Zürich, Switzerland.](https://millionrounds.com/company/cotierra) Cotierra is a Swiss-based climate-tech startup founded in July 2023 and headquartered in Zürich, Switzerland. *Founded* 2023 Zuerich, Switzerland **$3.0M** last round Sept 2026
- 34 [**autarkize** Autarkize is a climate-tech company based in Bavaria, Germany, founded in 2022.](https://millionrounds.com/company/autarkize) Autarkize is a climate-tech company based in Bavaria, Germany, founded in 2022. *Founded* 2022 Biessenhofen, Germany **$2.5M** last round Oct 2024
- 35 [**Glanris** Glanris is a climate-technology company based in Olive Branch, Mississippi, founded in 2018.](https://millionrounds.com/company/glanris) Glanris is a climate-technology company based in Olive Branch, Mississippi, founded in 2018. *Founded* 2019 Olive Branch, United States **$1.8M** last round Aug 2022
- 36 [**clearing zero carbon** clearing zero carbon is an innovtive company providing the society with low-cost carbon removal technology solutions using AI.](https://millionrounds.com/company/clearing-zero-carbon) clearing zero carbon is an innovtive company providing the society with low-cost carbon removal technology solutions using AI. *Founded* - China **$1.4M** last round May 2023
- 37 [**carbonABLE** Carbonable is a climate-tech and carbon management platform founded in 2021, based in Grenoble and Paris, France.](https://millionrounds.com/company/carbonable) Carbonable is a climate-tech and carbon management platform founded in 2021, based in Grenoble and Paris, France. *Founded* 2021 Grenoble, France **$1.2M** last round Mar 2023
- 38 [**CO280** CO280 Solutions Inc.](https://millionrounds.com/company/co280) CO280 Solutions Inc. *Founded* 2022 Vancouver, Canada **$727K** last round Jul 2024
- 39 [**HyveGeo** HyveGeo strives to create a more sustainable future with carbon dioxide removal and negative emissions technologies.](https://millionrounds.com/company/hyvegeo) HyveGeo strives to create a more sustainable future with carbon dioxide removal and negative emissions technologies. *Founded* - Cambridge, United Kingdom **$636K** last round Jun 2026
- 40 [**Treeconomy** Treeconomy is a London-based greentech company founded in 2018, dedicated to combating climate change and restoring biodiversity.](https://millionrounds.com/company/treeconomy) Treeconomy is a London-based greentech company founded in 2018, dedicated to combating climate change and restoring biodiversity. *Founded* 2018 London, United Kingdom **$633K** last round Mar 2022
- 41 [**CarbonPilot** CarbonPilot helps companies implement and verify carbon removal projects.](https://millionrounds.com/company/carbonpilot) CarbonPilot helps companies implement and verify carbon removal projects. *Founded* 2023 - **$425K** last round Jan 2024
- 42 [**Earthbanc** Earthbanc is a climate and agricultural technology company based in Stockholm, Sweden.](https://millionrounds.com/company/earthbanc) Earthbanc is a climate and agricultural technology company based in Stockholm, Sweden. *Founded* 2019 Stockholm, Sweden **$350K** last round Dec 2022
- 43 [**Nina Energy** Nina Energy Limited is a clean-tech company based in Quito, Ecuador, founded in 2021.](https://millionrounds.com/company/nina-energy) Nina Energy Limited is a clean-tech company based in Quito, Ecuador, founded in 2021. *Founded* 2025 Quito, Ecuador **$268K** last round Oct 2025
- 44 [**Tao Climate** Tao Climate is a climate FinTech startup solving the hardest part of carbon removal: trust.](https://millionrounds.com/company/tao-climate) Tao Climate is a climate FinTech startup solving the hardest part of carbon removal: trust. *Founded* 2022 Dublin, Ireland **$258K** last round Feb 2025

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies whose own description names this theme, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

## Who backed them?

Open any company for its rounds and investors, or search the investors who back carbon removal startups worldwide in the app, with filters, lists and exports.

[Find their investors](https://millionrounds.com/login?join=1&next=/app/investors)[All top lists](https://millionrounds.com/top-lists)

## More lists worldwide

[See all](https://millionrounds.com/top-lists?r=Global)

[*GV* *V* *RP* **Health startups worldwide** 12,811 companies · $81B](https://millionrounds.com/top-lists/health-startups)[*O* *A* *X* **AI startups worldwide** 10,238 companies · $830B](https://millionrounds.com/top-lists/ai-startups)[*GV* *V* *RP* **Biotech startups worldwide** 7,127 companies · $70B](https://millionrounds.com/top-lists/biotech-startups)[*D* *B* *FT* **Big data startups worldwide** 3,812 companies · $220B](https://millionrounds.com/top-lists/big-data-startups)[*AF* *R* *S* **Fintech startups worldwide** 3,200 companies · $94B](https://millionrounds.com/top-lists/fintech-startups)[*O* *A* *B* **AI startups that raised in 2026** 2,922 companies · $540B in 2026](https://millionrounds.com/top-lists/ai-startups-raised-2026)[*FT* *CE* *P* **Energy providers startups worldwide** 2,808 companies · $152B](https://millionrounds.com/top-lists/energy-providers-startups)[*A* *P* *O* **Marketing tech startups worldwide** 2,728 companies · $28B](https://millionrounds.com/top-lists/marketing-tech-startups)