# Top 50 Climate Tech Startups Founded in 2021 by Funding (2026)

> The 50 best-funded climate Tech startups founded in 2021, ranked by total funding raised: $3.0B combined.

Source: https://millionrounds.com/top-lists/climate-startups-founded-2021 (Millionrounds; every figure on the page links to its filing or article)

- 1 [**1KOMMA5°** 1Komma5° is an electricity company offering free electricity to all electric vehicle owners financed through trading using GHG quotas.](https://millionrounds.com/company/1komma5) 1Komma5° is an electricity company offering free electricity to all electric vehicle owners financed through trading using GHG quotas. *Founded* 2021 Hamburg, Germany **$563M** last round Oct 2026
- 2 [**Colossal Biosciences** Colossal Biosciences is an American biotechnology and genetic engineering company founded in September 2021, recognized as the world's first dedicated de-extinc](https://millionrounds.com/company/colossal-biosciences) Colossal Biosciences is an American biotechnology and genetic engineering company founded in September 2021, recognized as the world's first dedicated de-extinc *Founded* 2021 Dallas, United States **$380M** last round Feb 2026
- 3 [**Summit Carbon Solutions** Summit Carbon Solutions (SCS) is a U.S.-based decarbonization platform headquartered in Ames, Iowa.](https://millionrounds.com/company/summit-carbon-solutions) Summit Carbon Solutions (SCS) is a U.S.-based decarbonization platform headquartered in Ames, Iowa. *Founded* 2021 Ames, United States **$300M** last round May 2022
- 4 [**Muon Space** Muon Space is an American aerospace startup founded in 2021, based in Mountain View, California.](https://millionrounds.com/company/muon-space) Muon Space is an American aerospace startup founded in 2021, based in Mountain View, California. *Founded* 2021 Mountain View, United States **$295M** last round Aug 2026
- 5 [**Focused Energy** Focused Energy is a German-American deep-tech startup founded in 2021, specializing in laser-driven inertial confinement fusion (ICF).](https://millionrounds.com/company/focused-energy) Focused Energy is a German-American deep-tech startup founded in 2021, specializing in laser-driven inertial confinement fusion (ICF). *Founded* 2021 Darmstadt, Germany **$280M** last round Jun 2026
- 6 [**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
- 7 [**Just Climate**](https://millionrounds.com/company/just-climate) *Founded* 2021 United Kingdom **$175M** last round Mar 2025
- 8 [**Mitra Chem** Mitra Chem is an AI-native manufacturer of lithium-ion battery materials, founded in 2021 and headquartered in Mountain View, California.](https://millionrounds.com/company/mitra-chem) Mitra Chem is an AI-native manufacturer of lithium-ion battery materials, founded in 2021 and headquartered in Mountain View, California. *Founded* 2021 Mountain View, United States **$91M** last round Jun 2025
- 9 [**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
- 10 [**Captura** Captura Corporation is a climate technology company based in Pasadena, California, founded in 2021 by scientists from Caltech.](https://millionrounds.com/company/captura) Captura Corporation is a climate technology company based in Pasadena, California, founded in 2021 by scientists from Caltech. *Founded* 2021 Pasadena, United States **$64M** last round Jul 2026
- 11 [**Avnos** Avnos, Inc.](https://millionrounds.com/company/avnos) Avnos, Inc. *Founded* 2021 Los Angeles, United States **$53M** last round Nov 2025
- 12 [**Invert** Invert is a software startup that specializes in Bioprocess AI SaaS, focusing on enhancing biomanufacturing and bio-industrial operations.](https://millionrounds.com/company/invert) Invert is a software startup that specializes in Bioprocess AI SaaS, focusing on enhancing biomanufacturing and bio-industrial operations. *Founded* 2021 San Francisco, Canada **$40M** last round Jul 2024
- 13 [**CubicPV** CubicPV is a solar manufacturing company that produces wafers and tandem modules.](https://millionrounds.com/company/cubicpv) CubicPV is a solar manufacturing company that produces wafers and tandem modules. *Founded* 2021 Bedford, United States **$33M** last round Jun 2023
- 14 [**Capture6** Capture6 is a climate technology company based in Berkeley, California, and Rotorua, New Zealand.](https://millionrounds.com/company/capture6) Capture6 is a climate technology company based in Berkeley, California, and Rotorua, New Zealand. *Founded* 2021 Berkeley, United States **$28M** last round Mar 2025
- 15 [**Qorium** Real Leather, Reinvented](https://millionrounds.com/company/qorium) Real Leather, Reinvented *Founded* 2021 Maastricht, Netherlands **$25M** last round Nov 2025
- 16 [**Stargate Hydrogen** Stargate Hydrogen Solutions offers turn-key electrolysis solutions for the production of green hydrogen with renewable energy.](https://millionrounds.com/company/stargate-hydrogen) Stargate Hydrogen Solutions offers turn-key electrolysis solutions for the production of green hydrogen with renewable energy. *Founded* 2021 Tallinn, Estonia **$24M** last round Sept 2026
- 17 [**Clarasight** Clarasight is a New York-based technology company founded in 2021 by Adam Braun and Philip Charm.](https://millionrounds.com/company/clarasight) Clarasight is a New York-based technology company founded in 2021 by Adam Braun and Philip Charm. *Founded* 2021 New York, United States **$21M** last round Apr 2026
- 18 [**carbmee** carbmee is an AI-powered enterprise carbon management software company based in Berlin, Germany, founded in 2021.](https://millionrounds.com/company/carbmee) carbmee is an AI-powered enterprise carbon management software company based in Berlin, Germany, founded in 2021. *Founded* 2021 Berlin, Germany **$21M** last round Dec 2024
- 19 [**NovoHydrogen** NovoHydrogen is experienced at deploying and commercializing successful innovative energy transition technologies.](https://millionrounds.com/company/novohydrogen) NovoHydrogen is experienced at deploying and commercializing successful innovative energy transition technologies. *Founded* 2021 United States **$20M** last round Oct 2023
- 20 [**TULU** TULU is a PropTech company founded in 2019 and headquartered in New York, NY, with additional offices in Tel Aviv, Israel, and London, UK.](https://millionrounds.com/company/tulu) TULU is a PropTech company founded in 2019 and headquartered in New York, NY, with additional offices in Tel Aviv, Israel, and London, UK. *Founded* 2021 New York, United States **$17M** last round Nov 2025
- 21 [**Faircraft** Faircraft is a biotechnology startup based in Paris, founded in 2021.](https://millionrounds.com/company/faircraft) Faircraft is a biotechnology startup based in Paris, founded in 2021. *Founded* 2021 Paris, France **$16M** last round Nov 2024
- 22 [**Chloris Geospatial** Chloris Geospatial is a Boston-based climate-tech software company founded in 2021.](https://millionrounds.com/company/chloris-geospatial) Chloris Geospatial is a Boston-based climate-tech software company founded in 2021. *Founded* 2021 Boston, United States **$15M** last round Jun 2025
- 23 [**Nori** Nori serves as an intelligent digital life organizer, bolstered by a team of skilled virtual assistants.](https://millionrounds.com/company/nori) Nori serves as an intelligent digital life organizer, bolstered by a team of skilled virtual assistants. *Founded* 2021 United States **$14M** last round Dec 2025
- 24 [**Predium** Predium is a Munich-based PropTech company founded in 2021, specializing in an AI-powered Real Estate Intelligence Platform.](https://millionrounds.com/company/predium) Predium is a Munich-based PropTech company founded in 2021, specializing in an AI-powered Real Estate Intelligence Platform. *Founded* 2021 Munich, Germany **$14M** last round Nov 2024
- 25 [**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
- 26 [**NEU Battery Materials** Lithium battery recycling company](https://millionrounds.com/company/neu-battery-materials) Lithium battery recycling company *Founded* 2021 Singapore, Singapore **$11M** last round Oct 2026
- 27 [**Rhizocore Technologies** Rhizocore Technologies Ltd is a UK-based ecological innovation and biotechnology company focused on mycorrhizal fungi products.](https://millionrounds.com/company/rhizocore-technologies) Rhizocore Technologies Ltd is a UK-based ecological innovation and biotechnology company focused on mycorrhizal fungi products. *Founded* 2021 Edinburgh, United Kingdom **$11M** last round Nov 2025
- 28 [**hexafarms** hexafarms GmbH is a Berlin-based Ag-Tech startup focused on enhancing indoor commercial food production.](https://millionrounds.com/company/hexafarms) hexafarms GmbH is a Berlin-based Ag-Tech startup focused on enhancing indoor commercial food production. *Founded* 2021 Berlin, Germany **$9.5M** last round Oct 2026
- 29 [**Metafoodx** Metafoodx is an AI-driven food technology company based in San Jose, California.](https://millionrounds.com/company/metafoodx) Metafoodx is an AI-driven food technology company based in San Jose, California. *Founded* 2021 San Jose, United States **$9.4M** last round May 2025
- 30 [**GreenSpark Software** GreenSpark Software offers an end-to-end, web-based software solution to modernize and digitize the metal recycling industry.](https://millionrounds.com/company/greenspark-software) GreenSpark Software offers an end-to-end, web-based software solution to modernize and digitize the metal recycling industry. *Founded* 2021 New York, United States **$9.4M** last round Jan 2024
- 31 [**Emulsion Flow Technologies** Emulsion Flow Technologies Ltd.](https://millionrounds.com/company/emulsion-flow-technologies) Emulsion Flow Technologies Ltd. *Founded* 2021 Ibaraki, Japan **$9.2M** last round Mar 2024
- 32 [**Green Gravity** Green Gravity is an Australian clean technology company founded in 2021, based in North Wollongong, New South Wales.](https://millionrounds.com/company/green-gravity) Green Gravity is an Australian clean technology company founded in 2021, based in North Wollongong, New South Wales. *Founded* 2021 Wollongong, Australia **$9.0M** last round Oct 2024
- 33 [**Uplift360** Uplift360 is a cleantech startup focused on developing chemical-based technologies for recycling and reusing advanced materials, particularly in the defence and](https://millionrounds.com/company/uplift360) Uplift360 is a cleantech startup focused on developing chemical-based technologies for recycling and reusing advanced materials, particularly in the defence and *Founded* 2021 Luxembourg City, Luxembourg **$8.7M** last round Feb 2026
- 34 [**cimico** Cimico is a biotechnology startup based in San Sebastián, Spain, founded in 2019.](https://millionrounds.com/company/cimico) Cimico is a biotechnology startup based in San Sebastián, Spain, founded in 2019. *Founded* 2021 San Sebastian, Spain **$7.9M** last round Jul 2023
- 35 [**Terracle** Terracle is a South Korean environmental technology company specializing in the chemical recycling of challenging plastics, such as PET, Nylon, and PU.](https://millionrounds.com/company/terracle) Terracle is a South Korean environmental technology company specializing in the chemical recycling of challenging plastics, such as PET, Nylon, and PU. *Founded* 2021 South Korea **$7.9M** last round Mar 2024
- 36 [**CarbonFarm** CarbonFarm is a climate-tech and agri-tech startup founded in 2022 and based in Nanterre, France.](https://millionrounds.com/company/carbonfarm) CarbonFarm is a climate-tech and agri-tech startup founded in 2022 and based in Nanterre, France. *Founded* 2021 Paris, France **$7.8M** last round Oct 2026
- 37 [**Renew Risk** Renew Risk is a London-based InsurTech and FinTech company founded in 2021.](https://millionrounds.com/company/renew-risk) Renew Risk is a London-based InsurTech and FinTech company founded in 2021. *Founded* 2021 London, United Kingdom **$7.1M** last round Feb 2025
- 38 [**Kodama Systems** Restoring forests for future generations](https://millionrounds.com/company/kodama-systems) Restoring forests for future generations *Founded* 2021 Sonora, United States **$7.0M** last round Oct 2025
- 39 [**Connect Earth** Connect Earth is a London-based environmental data and climate fintech company founded in September 2021.](https://millionrounds.com/company/connect-earth) Connect Earth is a London-based environmental data and climate fintech company founded in September 2021. *Founded* 2021 London, United Kingdom **$6.5M** last round Dec 2025
- 40 [**veritree** Veritree is a Vancouver-based climate tech startup founded in 2021.](https://millionrounds.com/company/veritree) Veritree is a Vancouver-based climate tech startup founded in 2021. *Founded* 2021 Vancouver, Canada **$6.5M** last round May 2025
- 41 [**Carbon Equity** Carbon Equity is a climate investing platform for alternative investments.](https://millionrounds.com/company/carbon-equity) Carbon Equity is a climate investing platform for alternative investments. *Founded* 2021 Amsterdam, Netherlands **$6.4M** last round Oct 2023
- 42 [**Elysian** Elysian provides deathcare products and solutions with a low carbon footprint, sustainably sourced, and radically transparent pricing.](https://millionrounds.com/company/elysian) Elysian provides deathcare products and solutions with a low carbon footprint, sustainably sourced, and radically transparent pricing. *Founded* 2021 United States **$6.0M** last round Sept 2025
- 43 [**SCOP3** SCOP3 is a mission-driven startup based in Montpellier, France, founded in 2021 by Sophie Scantamburlo-Contreras and Frédéric Salles.](https://millionrounds.com/company/scop3) SCOP3 is a mission-driven startup based in Montpellier, France, founded in 2021 by Sophie Scantamburlo-Contreras and Frédéric Salles. *Founded* 2021 Perols, France **$5.7M** last round May 2024
- 44 [**Insight Terra** Insight Terra is a platform that helps in real-time monitoring and risk management of mine tailings and water.](https://millionrounds.com/company/insight-terra) Insight Terra is a platform that helps in real-time monitoring and risk management of mine tailings and water. *Founded* 2021 London, South Africa **$5.7M** last round Jan 2025
- 45 [**SugaROx** SugaROx is a UK-based agri-biotech company founded in 2021 through a collaboration between the University of Oxford and Rothamsted Research.](https://millionrounds.com/company/sugarox) SugaROx is a UK-based agri-biotech company founded in 2021 through a collaboration between the University of Oxford and Rothamsted Research. *Founded* 2021 Harpenden, United Kingdom **$4.7M** last round May 2026
- 46 [**Briink** Briink is a Berlin-based AI software company founded in 2021, specializing in tools for environmental, social, and governance (ESG) and sustainable finance teams.](https://millionrounds.com/company/briink) Briink is a Berlin-based AI software company founded in 2021, specializing in tools for environmental, social, and governance (ESG) and sustainable finance teams. *Founded* 2021 Berlin, Germany **$4.3M** last round Sept 2024
- 47 [**Oort Energy** Oort Energy is a UK-based technology company focused on designing, developing, and manufacturing advanced hydrogen electrolyser systems.](https://millionrounds.com/company/oort-energy) Oort Energy is a UK-based technology company focused on designing, developing, and manufacturing advanced hydrogen electrolyser systems. *Founded* 2021 London, United Kingdom **$3.7M** last round Aug 2025
- 48 [**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
- 49 [**NeoCarbon** NeoCarbon is a Berlin-based climate tech company founded in 2021.](https://millionrounds.com/company/neocarbon) NeoCarbon is a Berlin-based climate tech company founded in 2021. *Founded* 2021 Berlin, Germany **$3.5M** last round Dec 2023
- 50 [**Allegro Energy** Allegro Energy is a developer of energy storage technology focus on sustainable solutions for a zero carbon economy.](https://millionrounds.com/company/allegro-energy) Allegro Energy is a developer of energy storage technology focus on sustainable solutions for a zero carbon economy. *Founded* 2021 Newcastle, Australia **$3.5M** last round Jul 2025

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies founded in 2021 whose funding rounds we classed in this sector, 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 climate Tech startups founded in 2021 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 climate tech lists

[See all](https://millionrounds.com/top-lists?t=Climate%20Tech)

[*VG* *CF* *S* **Climate Tech startups in the United States** 270 companies · $27B](https://millionrounds.com/top-lists/climate-startups-united-states)[*VG* *S* *CF* **Climate Tech startups that raised in 2026** 195 companies · $20B in 2026](https://millionrounds.com/top-lists/climate-startups-raised-2026)[*RG* *AE* *NR* **Climate Tech startups in the United Kingdom** 111 companies · $3.4B](https://millionrounds.com/top-lists/climate-startups-united-kingdom)[*RP* *R* *M* **Climate Tech startups founded in 2022** 69 companies · $2.0B](https://millionrounds.com/top-lists/climate-startups-founded-2022)[*MC* *BB* *S* **Climate Tech startups founded in 2019** 66 companies · $2.1B](https://millionrounds.com/top-lists/climate-startups-founded-2019)[*SD* *1* *LE* **Climate Tech startups founded in 2020** 64 companies · $2.7B](https://millionrounds.com/top-lists/climate-startups-founded-2020)[*VG* *S* *CF* **Climate Tech startups in the United States that raised in 2026** 62 companies · $17B in 2026](https://millionrounds.com/top-lists/climate-startups-united-states-raised-2026)[*TM* *HG* *N* **Climate Tech startups founded in 2018** 48 companies · $1.4B](https://millionrounds.com/top-lists/climate-startups-founded-2018)

## 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)