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Cleantech startups in the United States

480 cleantech startups in the United States have raised money in rounds we track. These are the 50 that have raised the most, $50B between them, with Miami the most common home.

$50Braised by these 50
480on our record in all
Miamimost common home
Crusoeraised the most
  1. 1CrusoeCrusoe is an energy-first AI infrastructure company that develops and operates large-scale, AI-optimized data centers powered by clean energy sources.

    Crusoe is an energy-first AI infrastructure company that develops and operates large-scale, AI-optimized data centers powered by clean energy sources.

    Founded 2018Denver, United States$9.9Blast round Sept 2026
  2. 2Atlas Renewable EnergyAtlas Renewable Energy is a renewable energy company that develops, builds, and operates solar and wind projects.

    Atlas Renewable Energy is a renewable energy company that develops, builds, and operates solar and wind projects.

    Founded 2017Miami, United States$3.1Blast round Apr 2026
  3. 3EVgoEVgo provides fast charging networks for private and public electric vehicles.

    EVgo provides fast charging networks for private and public electric vehicles.

    Founded 2010Los Angeles, United States$2.5Blast round Jul 2025
  4. 4Base PowerFounded -United States$2.2Blast round Aug 2026
  5. 5Form EnergyForm Energy develops and commercializes a low-cost battery system that can store wind and solar energy for a long duration.

    Form Energy develops and commercializes a low-cost battery system that can store wind and solar energy for a long duration.

    Founded 2017Somerville, United States$2.0Blast round Sept 2026
  6. 6Commonwealth Fusion SystemsFounded -United States$1.9Blast round Jul 2026
  7. 7X-energyX-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.

    X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.

    Founded 2009Rockville, United States$1.5Blast round May 2026
  8. 8Dimension EnergyFounded -United States$1.5Blast round Aug 2026
  9. 9Generate CapitalGenerate Capital is an investment and operating platform for sustainable infrastructure.

    Generate Capital is an investment and operating platform for sustainable infrastructure.

    Founded 2014San Francisco, United States$1.3Blast round Sept 2026
  10. 10Redwood MaterialsRedwood Materials is an American company based in Carson City, Nevada, focused on creating a sustainable supply chain for lithium-ion batteries.

    Redwood Materials is an American company based in Carson City, Nevada, focused on creating a sustainable supply chain for lithium-ion batteries.

    Founded 2017Carson City, United States$1.2Blast round Jan 2026
  11. 11EnergyReEnergyRe is at the center of the clean energy future.

    EnergyRe is at the center of the clean energy future.

    Founded 2020New York, United States$1.2Blast round Oct 2026
  12. 12CleanSparkCleanSpark (Nasdaq: CLSK) is America's Bitcoin MinerTM.

    CleanSpark (Nasdaq: CLSK) is America's Bitcoin MinerTM.

    Founded 2014Henderson, United States$1.1Blast round Nov 2025
  13. 13Fervo EnergyFervo Energy develops clean energy technology to generate carbon-free energy from geothermal systems.

    Fervo Energy develops clean energy technology to generate carbon-free energy from geothermal systems.

    Founded 2017Houston, United States$1.1Blast round Sept 2026
  14. 14SB EnergySB Energy provides renewable energy at scale, accelerating the global energy transition.

    SB Energy provides renewable energy at scale, accelerating the global energy transition.

    Founded 2015Redwood City, United States$1.0Blast round Jan 2026
  15. 15The Appalachian Regional Clean Hydrogen HubARCH2's mission is to provide an interconnected, full value chain H2Hub solution.

    ARCH2's mission is to provide an interconnected, full value chain H2Hub solution.

    Founded -Morgantown, United States$925Mlast round Jul 2024
  16. 16Solar LandscapeSolar Landscape is an installer and operator of solar energy systems.

    Solar Landscape is an installer and operator of solar energy systems.

    Founded 2012Asbury Park, United States$900Mlast round Jun 2026
  17. 17Pacific FusionPacific Fusion was founded in 2023 to deliver commercial fusion energy to power cities, businesses and homes.

    Pacific Fusion was founded in 2023 to deliver commercial fusion energy to power cities, businesses and homes.

    Founded 1997Fremont, United States$900Mlast round Nov 2024
  18. 18Blue EnergyBlue Energy is a nuclear energy company that designs and manufactures modular nuclear power plants.

    Blue Energy is a nuclear energy company that designs and manufactures modular nuclear power plants.

    Founded -Plainfield, United States$805Mlast round Jul 2026
  19. 19Intersect PowerFounded -United States$800Mlast round Dec 2024
  20. 20AvantusAvantus develops large-scale solar and solar-plus-storage projects to drive the adoption of zero-emission energy.

    Avantus develops large-scale solar and solar-plus-storage projects to drive the adoption of zero-emission energy.

    Founded 2019El Dorado Hills, United States$800Mlast round Sept 2026
  21. 21Panamint CapitalPanamint Capital is an energy investment firm that focuses on developing electric transmission and optimizing power generation.

    Panamint Capital is an energy investment firm that focuses on developing electric transmission and optimizing power generation.

    Founded 2019United States$769Mlast round Nov 2026
  22. 22XPLR InfrastructureXPLR Infrastructure is a renewable energy company that owns, operates, and acquires contracted clean energy projects.

    XPLR Infrastructure is a renewable energy company that owns, operates, and acquires contracted clean energy projects.

    Founded -North Palm Beach, United States$750Mlast round Nov 2025
  23. 23Maxwell PowerMaxwell Power is a renewable energy company that installs solar panels.

    Maxwell Power is a renewable energy company that installs solar panels.

    Founded -San Diego, United States$750Mlast round Jun 2026
  24. 24Radial PowerRadial Power provides distributed energy and sustainability solutions to commercial and industrial real estate asset owners.

    Radial Power provides distributed energy and sustainability solutions to commercial and industrial real estate asset owners.

    Founded 2022Houston, United States$660Mlast round Jan 2026
  25. 25Origis EnergyOrigis Energy focuses on the development, construction, and operation of solar power plants and energy storage solutions.

    Origis Energy focuses on the development, construction, and operation of solar power plants and energy storage solutions.

    Founded 2008Miami, United States$651Mlast round Jan 2025
  26. 26rPlus EnergiesrPlus Energies builds new power plants to help rebuild America's energy infrastructure.

    rPlus Energies builds new power plants to help rebuild America's energy infrastructure.

    Founded 2018Salt Lake City, United States$650Mlast round Mar 2026
  27. 27WildFire EnergyWildfire Energy is an Australian cleantech startup focused on converting residual waste into renewable energy, hydrogen, and sustainable fuels using its proprie

    Wildfire Energy is an Australian cleantech startup focused on converting residual waste into renewable energy, hydrogen, and sustainable fuels using its proprie

    Founded 2016Petrie Terrace, United States$604Mlast round Jul 2026
  28. 28Abound SolarAbound Solar was a thin-film solar module manufacturer based in Loveland, Colorado.

    Abound Solar was a thin-film solar module manufacturer based in Loveland, Colorado.

    Founded 2007Loveland, United States$510Mlast round Dec 2010
  29. 29Sedron TechnologiesSedron Technologies is a private environmental services company based in Sedro-Woolley, Washington, founded in 2014 as a spinoff from Janicki Industries.

    Sedron Technologies is a private environmental services company based in Sedro-Woolley, Washington, founded in 2014 as a spinoff from Janicki Industries.

    Founded 2014Sedro-Woolley, United States$500Mlast round May 2026
  30. 30Pivot EnergyPivot Energy is a national renewable energy provider that develops, finances, builds, owns, and manages solar and energy storage projects.

    Pivot Energy is a national renewable energy provider that develops, finances, builds, owns, and manages solar and energy storage projects.

    Founded 2009Denver, United States$500Mlast round Oct 2026
  31. 31ArevonArevon Energy is a renewable energy company that focuses on developing, acquiring, and managing large-scale renewable energy projects.

    Arevon Energy is a renewable energy company that focuses on developing, acquiring, and managing large-scale renewable energy projects.

    Founded 2017Scottsdale, United States$482Mlast round Mar 2026
  32. 32HelionHelion incorporated in 2009 and is now functioning as an R&D/thinktank company providing intellectual services with an emphasis on artificial intelligence, math

    Helion incorporated in 2009 and is now functioning as an R&D/thinktank company providing intellectual services with an emphasis on artificial intelligence, math

    Founded -Salt Lake City, UT, United States$465Mlast round Jun 2026
  33. 33SoloPowerSoloPower is a producer of thin-film photovoltaic cells and modules that help solar electricity generation.

    SoloPower is a producer of thin-film photovoltaic cells and modules that help solar electricity generation.

    Founded 2005Portland, United States$458Mlast round Oct 2012
  34. 34Spearmint EnergySpearmint Energy is a merchant energy trading company founded to combine innovative financial solutions.

    Spearmint Energy is a merchant energy trading company founded to combine innovative financial solutions.

    Founded 2022Miami, United States$450Mlast round May 2026
  35. 35Helion EnergyHelion Energy is a fusion power company developing the world's first fusion generators, enabling a future with unlimited clean energy.

    Helion Energy is a fusion power company developing the world's first fusion generators, enabling a future with unlimited clean energy.

    Founded 2013Everett, United States$437Mlast round Jan 2025
  36. 36NineDot EnergyNineDot Energy develops battery storage sites and other energy solutions.

    NineDot Energy develops battery storage sites and other energy solutions.

    Founded 2015New York, United States$431Mlast round Feb 2026
  37. 37Whysol RenewablesWhysol Renewables is an Italian independent power producer focused on renewable energy and energy transition projects.

    Whysol Renewables is an Italian independent power producer focused on renewable energy and energy transition projects.

    Founded -Italy, United States$368Mlast round Mar 2026
  38. 38PanthalassaPanthalassa is a public-benefit corporation based in Portland, Oregon, founded in 2016.

    Panthalassa is a public-benefit corporation based in Portland, Oregon, founded in 2016.

    Founded 2021Portland, United States$365Mlast round Aug 2026
  39. 39Agilitas EnergyAgilitas Energy is a fully integrated developer, builder, owner, and operator of distributed solar and energy-storage systems.

    Agilitas Energy is a fully integrated developer, builder, owner, and operator of distributed solar and energy-storage systems.

    Founded 2014Wakefield, United States$350Mlast round Jun 2022
  40. 40Estuary PowerEstuary Power develops, sponsors, and finances energy projects.

    Estuary Power develops, sponsors, and finances energy projects.

    Founded 2013Reno, United States$340Mlast round Dec 2024
  41. 41Ara PartnersAra Partners is an oppertunistic private equity investment platform.

    Ara Partners is an oppertunistic private equity investment platform.

    Founded 2017Houston, United States$335Mlast round Sept 2024
  42. 42Lunar EnergyLunar Energy is a renewable energy company based in Mountain View, California, founded in 2020.

    Lunar Energy is a renewable energy company based in Mountain View, California, founded in 2020.

    Founded 2020Mountain View, United States$334Mlast round Feb 2026
  43. 43PosiGenPosiGen is on a mission to make solar affordable and easy to access for homeowners.

    PosiGen is on a mission to make solar affordable and easy to access for homeowners.

    Founded 2011St. Rose, United States$320Mlast round Dec 2024
  44. 44Peregrine EnergyPeregrine Energy is a manufacturing company that specializes in the acquisition, development, and operations of renewable assets.

    Peregrine Energy is a manufacturing company that specializes in the acquisition, development, and operations of renewable assets.

    Founded 2022Boulder, United States$317Mlast round Nov 2025
  45. 45EnerVenueEnerVenue is an energy storage infrastructure company based in Fremont, California, founded in 2020.

    EnerVenue is an energy storage infrastructure company based in Fremont, California, founded in 2020.

    Founded 2020Fremont, United States$312Mlast round Mar 2026
  46. 46CleanCapitalCleanCapital accelerates clean energy with an online marketplace providing opportunities for investors and access to capital for developers.

    CleanCapital accelerates clean energy with an online marketplace providing opportunities for investors and access to capital for developers.

    Founded 2015New York, United States$304Mlast round Jan 2026
  47. 47Neogenyx FuelsNeogenyx Fuels develops, owns, and operates advanced biofuel and renewable natural gas infrastructure projects.

    Neogenyx Fuels develops, owns, and operates advanced biofuel and renewable natural gas infrastructure projects.

    Founded -Framingham, United States$300Mlast round May 2026
  48. 48Carrier Energy PartnersCarrier Energy Partners is a private oil and gas company focused on the acquisition and exploitation of upstream assets.

    Carrier Energy Partners is a private oil and gas company focused on the acquisition and exploitation of upstream assets.

    Founded 2013United States$300Mlast round Oct 2013
  49. 49Strata Clean EnergyStrata Clean Energy is a solar storage developer.

    Strata Clean Energy is a solar storage developer.

    Founded 2008Durham, United States$300Mlast round Nov 2023
  50. 50Scale MicrogridsScale Microgrids is a distributed clean energy and microgrid platform.

    Scale Microgrids is a distributed clean energy and microgrid platform.

    Founded 2016Ridgewood, United States$279Mlast round Jun 2026
Total fundinghow the list is ranked
15 November 2026updated nightly
Rounds we tracksource: Millionrounds

Companies 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.

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