# Top 50 Climate Tech Startups in the United States by Funding Raised in 2026

> The 50 climate Tech startups in the United States that raised in 2026 that raised the most in 2026, ranked by money raised this year: $17B combined.

Source: https://millionrounds.com/top-lists/climate-startups-united-states-raised-2026 (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Venture Global** Venture Global is a supplier of home, office, and stationery products.](https://millionrounds.com/company/venture-global) Venture Global is a supplier of home, office, and stationery products. *Founded* 2013 Washington, United States **$10B** last round Jun 2026
- 2 [**SILA**](https://millionrounds.com/company/sila) *Founded* - United States **$1.7B** last round Aug 2026
- 3 [**Commonwealth Fusion Systems**](https://millionrounds.com/company/commonwealth-fusion-systems) *Founded* - United States **$1.0B** last round Jul 2026
- 4 [**Sedron Technologies** Sedron Technologies is a private environmental services company based in Sedro-Woolley, Washington, founded in 2014 as a spinoff from Janicki Industries.](https://millionrounds.com/company/sedron-technologies) Sedron Technologies is a private environmental services company based in Sedro-Woolley, Washington, founded in 2014 as a spinoff from Janicki Industries. *Founded* 2014 Sedro-Woolley, United States **$500M** last round May 2026
- 5 [**Fervo Energy** Fervo Energy develops clean energy technology to generate carbon-free energy from geothermal systems.](https://millionrounds.com/company/fervo-energy) Fervo Energy develops clean energy technology to generate carbon-free energy from geothermal systems. *Founded* 2017 Houston, United States **$441M** last round Sept 2026
- 6 [**Redwood Materials** Redwood Materials is an American company based in Carson City, Nevada, focused on creating a sustainable supply chain for lithium-ion batteries.](https://millionrounds.com/company/redwood-materials) Redwood Materials is an American company based in Carson City, Nevada, focused on creating a sustainable supply chain for lithium-ion batteries. *Founded* 2017 Carson City, United States **$425M** last round Jan 2026
- 7 [**Radial Power** Radial Power provides distributed energy and sustainability solutions to commercial and industrial real estate asset owners.](https://millionrounds.com/company/radial-power) Radial Power provides distributed energy and sustainability solutions to commercial and industrial real estate asset owners. *Founded* 2022 Houston, United States **$355M** last round Jan 2026
- 8 [**Lunar Energy** Lunar Energy is a renewable energy company based in Mountain View, California, founded in 2020.](https://millionrounds.com/company/lunar-energy) Lunar Energy is a renewable energy company based in Mountain View, California, founded in 2020. *Founded* 2020 Mountain View, United States **$334M** last round Feb 2026
- 9 [**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 **$250M** last round Aug 2026
- 10 [**Heron Power** Heron Power is an energy infrastructure company based in Scotts Valley, California, founded in 2024 by Drew Baglino, a former Tesla executive.](https://millionrounds.com/company/heron-power) Heron Power is an energy infrastructure company based in Scotts Valley, California, founded in 2024 by Drew Baglino, a former Tesla executive. *Founded* 2024 Scotts Valley, United States **$200M** last round Sept 2026
- 11 [**Standard Nuclear** Standard Nuclear manufactures advanced nuclear fuel for next-generation reactors and high-temperature applications.](https://millionrounds.com/company/standard-nuclear) Standard Nuclear manufactures advanced nuclear fuel for next-generation reactors and high-temperature applications. *Founded* - Oak Ridge, United States **$140M** last round Jan 2026
- 12 [**Thea Energy** Thea Energy is a fusion energy startup focused on commercializing scalable and zero-emission power through advanced stellarator technology.](https://millionrounds.com/company/thea-energy) Thea Energy is a fusion energy startup focused on commercializing scalable and zero-emission power through advanced stellarator technology. *Founded* 2022 Kearny, United States **$120M** last round Jul 2026
- 13 [**Rainmaker** Rainmaker is a New York-based crypto and DeFi company that specializes in a mobile-first, account-abstraction wallet.](https://millionrounds.com/company/rainmaker) Rainmaker is a New York-based crypto and DeFi company that specializes in a mobile-first, account-abstraction wallet. *Founded* 2022 New York, United States **$100M** last round Sept 2026
- 14 [**Project Omega** Project Omega is a nuclear technology startup founded in 2026 and headquartered in Rhode Island.](https://millionrounds.com/company/project-omega) Project Omega is a nuclear technology startup founded in 2026 and headquartered in Rhode Island. *Founded* 2025 Washington, United States **$92M** last round Nov 2026
- 15 [**Imperative Global** Imperative Global is an environmental consulting company that provides carbon offset and environmental asset projects.](https://millionrounds.com/company/imperative-global) Imperative Global is an environmental consulting company that provides carbon offset and environmental asset projects. *Founded* - Houston, United States **$91M** last round Apr 2026
- 16 [**Type One Energy** Stellarator technology to transform energy markets with fusion power.](https://millionrounds.com/company/type-one-energy) Stellarator technology to transform energy markets with fusion power. *Founded* 2019 Knoxville, United States **$88M** last round Sept 2026
- 17 [**Applied Carbon** Applied Carbon is a Houston-based climate technology company founded in 2020, specializing in innovative solutions for carbon sequestration and soil health.](https://millionrounds.com/company/applied-carbon) Applied Carbon is a Houston-based climate technology company founded in 2020, specializing in innovative solutions for carbon sequestration and soil health. *Founded* 2020 Houston, United States **$72M** last round Nov 2026
- 18 [**Stand** Discrete Safety Jewellery For Peace Of Mind](https://millionrounds.com/company/stand) Discrete Safety Jewellery For Peace Of Mind *Founded* 2019 United States **$70M** last round Oct 2026
- 19 [**LanzaJet** LanzaJet is a private company founded in 2020 that focuses on sustainable fuels technology.](https://millionrounds.com/company/lanzajet) LanzaJet is a private company founded in 2020 that focuses on sustainable fuels technology. *Founded* 2020 Chicago, United States **$67M** last round Oct 2026
- 20 [**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 **$60M** last round Feb 2026
- 21 [**DG Matrix** DG Matrix is a cleantech company based in Raleigh, North Carolina, founded in 2022.](https://millionrounds.com/company/dg-matrix) DG Matrix is a cleantech company based in Raleigh, North Carolina, founded in 2022. *Founded* 2022 Morrisville, United States **$60M** last round Feb 2026
- 22 [**Endurance Energy** A Calgary, Alberta-based early-stage exploration and production company](https://millionrounds.com/company/endurance-energy) A Calgary, Alberta-based early-stage exploration and production company *Founded* 2025 Seattle, United States **$54M** last round Jun 2026
- 23 [**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 **$54M** last round Jul 2026
- 24 [**AMP Robotics** AMP offers AI-powered waste sorting solutions to automate recovery and reduce labor.](https://millionrounds.com/company/amp-robotics) AMP offers AI-powered waste sorting solutions to automate recovery and reduce labor. *Founded* - United States **$53M** last round Jun 2026
- 25 [**Twelve** Twelve offers smart payment solutions such as software modules, links, ordering solutions, internet solutions, communication & sponsorship.](https://millionrounds.com/company/twelve) Twelve offers smart payment solutions such as software modules, links, ordering solutions, internet solutions, communication & sponsorship. *Founded* 2007 Utrecht, United States **$45M** last round Sept 2026
- 26 [**Pennsylvania American Water** Pennsylvania American Water provides high-quality and reliable water and wastewater services.](https://millionrounds.com/company/pennsylvania-american-water) Pennsylvania American Water provides high-quality and reliable water and wastewater services. *Founded* 1965 Camden, United States **$43M** last round Oct 2026
- 27 [**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 **$35M** last round Sept 2026
- 28 [**Terradot** Terradot is a climate technology company founded in 2022 at Stanford University, focused on developing Enhanced Rock Weathering (ERW) solutions to remove carbon](https://millionrounds.com/company/terradot) Terradot is a climate technology company founded in 2022 at Stanford University, focused on developing Enhanced Rock Weathering (ERW) solutions to remove carbon *Founded* 2022 San Francisco, United States **$34M** last round Oct 2026
- 29 [**Hippo Harvest** Hippo Harvest is a private controlled-environment agriculture company founded in 2019, based in the San Francisco Bay Area.](https://millionrounds.com/company/hippo-harvest) Hippo Harvest is a private controlled-environment agriculture company founded in 2019, based in the San Francisco Bay Area. *Founded* 2019 Pescadero, United States **$30M** last round Aug 2026
- 30 [**NanoTech Materials** NanoTech Materials, Inc.](https://millionrounds.com/company/nanotech-materials) NanoTech Materials, Inc. *Founded* 2019 Houston, United States **$29M** last round Apr 2026
- 31 [**CREW Carbon** CREW Carbon is a climate technology company founded in 2022 and based in Hamden, Connecticut.](https://millionrounds.com/company/crew-carbon) CREW Carbon is a climate technology company founded in 2022 and based in Hamden, Connecticut. *Founded* - Hamden, United States **$25M** last round May 2026
- 32 [**Catalyxx** Catalyxx Inc focuses on sustainable chemical processes using thermo-chemical catalytic technology.](https://millionrounds.com/company/catalyxx) Catalyxx Inc focuses on sustainable chemical processes using thermo-chemical catalytic technology. *Founded* 2017 Chesterfield, United States **$23M** last round Jul 2026
- 33 [**Amogy** Amogy Inc.](https://millionrounds.com/company/amogy) Amogy Inc. *Founded* 2020 New York, United States **$20M** last round Oct 2026
- 34 [**Tive**](https://millionrounds.com/company/tive) *Founded* - United States **$20M** last round Jan 2026
- 35 [**Charm Industrial** Charm Industrial is putting oil back underground via bio-oil sequestration and industrial syngas production.](https://millionrounds.com/company/charm-industrial) Charm Industrial is putting oil back underground via bio-oil sequestration and industrial syngas production. *Founded* 2018 San Francisco, United States **$20M** last round Jun 2026
- 36 [**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
- 37 [**CarbonDrop** Carbondrop is a climate technology product manufacturing that remove CO2 from the atmosphere by accelerating Earth’s natural CO2 cycle.](https://millionrounds.com/company/carbondrop) Carbondrop is a climate technology product manufacturing that remove CO2 from the atmosphere by accelerating Earth’s natural CO2 cycle. *Founded* 2023 Palo Alto, United States **$20M** last round May 2026
- 38 [**DMC Biotechnologies** DMC Biotechnologies produces bio-based chemicals using fermentation.](https://millionrounds.com/company/dmc-biotechnologies) DMC Biotechnologies produces bio-based chemicals using fermentation. *Founded* 2014 Boulder, United States **$18M** last round Oct 2026
- 39 [**Hauler Hero** Hauler Hero is a cloud-based software company that provides an all-in-one operating system for waste and recycling haulers.](https://millionrounds.com/company/hauler-hero) Hauler Hero is a cloud-based software company that provides an all-in-one operating system for waste and recycling haulers. *Founded* 2020 New York, United States **$16M** last round Feb 2026
- 40 [**Circularity Fuels** Circularity Fuels converts biogas into sustainable aviation fuel.](https://millionrounds.com/company/circularity-fuels) Circularity Fuels converts biogas into sustainable aviation fuel. *Founded* - Palo Alto, United States **$15M** last round Nov 2026
- 41 [**Helix Earth** Helix Earth Technologies, Inc.](https://millionrounds.com/company/helix-earth) Helix Earth Technologies, Inc. *Founded* 2022 Houston, United States **$12M** last round Mar 2026
- 42 [**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 **$12M** last round Apr 2026
- 43 [**Amermin** Amermin is a recycling company that specializes in refining and selling of strategic minerals and metals.](https://millionrounds.com/company/amermin) Amermin is a recycling company that specializes in refining and selling of strategic minerals and metals. *Founded* 2017 Austin, United States **$12M** last round Jan 2026
- 44 [**Trashie** Trashie gives people an easy and convenient way to recycle unwanted clothing, shoes, accessories, linens, and more, keeping waste out of landfills for as long a](https://millionrounds.com/company/trashie) Trashie gives people an easy and convenient way to recycle unwanted clothing, shoes, accessories, linens, and more, keeping waste out of landfills for as long a *Founded* 2024 New York, United States **$10M** last round Mar 2026
- 45 [**Ravel** Ravel is a startup company that develops a compact and safe mining system for thin ore deposits.](https://millionrounds.com/company/ravel) Ravel is a startup company that develops a compact and safe mining system for thin ore deposits. *Founded* 2018 United States **$8.2M** last round Sept 2026
- 46 [**Reservoir** Empowering agtech startups with field-ready R&D, robotics, and funding.](https://millionrounds.com/company/reservoir) Empowering agtech startups with field-ready R&D, robotics, and funding. *Founded* - Salinas, United States **$8.0M** last round Aug 2026
- 47 [**Kodama** Kodama is a designer and manufacturer of the next evolution of furniture design.](https://millionrounds.com/company/kodama) Kodama is a designer and manufacturer of the next evolution of furniture design. *Founded* 2012 United States **$7.0M** last round Oct 2026
- 48 [**Alcove**](https://millionrounds.com/company/alcove) *Founded* - United States **$6.0M** last round Sept 2026
- 49 [**Eco World Water** Eco World Water is a clean water tech company that offers wastewater processing through physical and chemical treatment process.](https://millionrounds.com/company/eco-world-water) Eco World Water is a clean water tech company that offers wastewater processing through physical and chemical treatment process. *Founded* - Fort Lauderdale, United States **$5.9M** last round Apr 2026
- 50 [**Supersede** Supersede changes the standard of building materials by replacing conventional wood-based products.](https://millionrounds.com/company/supersede) Supersede changes the standard of building materials by replacing conventional wood-based products. *Founded* 2024 Phoenix, United States **$5.0M** last round May 2026

**Money raised in 2026** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies with a round in 2026 that we track, ranked by what they raised this year. 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 in the United States that raised in 2026 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)[*1* *CB* *SC* **Climate Tech startups founded in 2021** 76 companies · $3.0B](https://millionrounds.com/top-lists/climate-startups-founded-2021)[*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)[*TM* *HG* *N* **Climate Tech startups founded in 2018** 48 companies · $1.4B](https://millionrounds.com/top-lists/climate-startups-founded-2018)

## More lists for United States

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[*O* *A* *X* **Startups in the United States** 42,176 companies · $870B](https://millionrounds.com/top-lists/startups-united-states)[*GV* *V* *RP* **Health startups in the United States** 7,411 companies · $71B](https://millionrounds.com/top-lists/health-startups-united-states)[*O* *A* *X* **AI startups in the United States** 5,656 companies · $718B](https://millionrounds.com/top-lists/ai-startups-united-states)[*V* *RP* *DH* **Healthcare startups in the United States** 4,148 companies · $51B](https://millionrounds.com/top-lists/healthcare-startups-united-states)[*S* *P* *I* **IT Services startups in the United States** 3,482 companies · $27B](https://millionrounds.com/top-lists/it-services-startups-united-states)[*D* *CE* *AD* **Big Data & Analytics startups in the United States** 2,107 companies · $132B](https://millionrounds.com/top-lists/big-data-startups-united-states)[*O* *A* *W* **AI startups in the United States that raised in 2026** 1,648 companies · $431B in 2026](https://millionrounds.com/top-lists/ai-startups-united-states-raised-2026)[*D* *P* *A* **Software startups in the United States** 1,638 companies · $77B](https://millionrounds.com/top-lists/software-startups-united-states)