Top 41 Carbon Capturing and Gas Recycling startups in USA
Mar 18, 2026
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23
1
Funding: $133M
Avnos is commercializing technology to capture CO2 without consuming water, producing water for every ton.
Avnos is commercializing technology to capture CO2 without consuming water, producing water for every ton.
2
Funding: $929.4M
Twelve is a new kind of chemical company built for the climate era. We make essential products from air, not oil.
Twelve is a new kind of chemical company built for the climate era. We make essential products from air, not oil.
3
Funding: $204.3M
Heirloom is a provider of direct air capture technology to enhance the natural process of CO2 absorption from the atmosphere.
Heirloom is a provider of direct air capture technology to enhance the natural process of CO2 absorption from the atmosphere.
4
Funding: $204.3M
Heirloom Carbon develops technology called carbon mineralization, to help minerals absorb CO2 from the ambient air in days, rather than years. By combining the best of engineering and nature, we can offer the most cost-effective and scalable Direct Air Capture solution in the world.
Heirloom Carbon develops technology called carbon mineralization, to help minerals absorb CO2 from the ambient air in days, rather than years. By combining the best of engineering and nature, we can offer the most cost-effective and scalable Direct Air Capture solution in the world.
5
Funding: $108.1M
Air Company turns carbon dioxide into things like perfume, vodka, hand sanitizer and aviation fuel
Air Company turns carbon dioxide into things like perfume, vodka, hand sanitizer and aviation fuel
6
Funding: $105M
Solidia Technologies is a tech firm that makes it profitable to use CO₂ for manufacturing construction and industrial products.
Solidia Technologies is a tech firm that makes it profitable to use CO₂ for manufacturing construction and industrial products.
7
Funding: $55.1M
Spiritus is a climate tech company developing direct-air-capture technology.
Spiritus is a climate tech company developing direct-air-capture technology.
8
Funding: $50M
Aircapture is creating a circular commercial carbon economy utilizing novel Direct Air Capture (DAC) technology.
Aircapture is creating a circular commercial carbon economy utilizing novel Direct Air Capture (DAC) technology.
9
Funding: $48.7M
Dimensional Energy transforms carbon dioxide into sustainable aviation fuel (SAF) and valuable consumer products with the lowest energy input per barrel installed.
Dimensional Energy transforms carbon dioxide into sustainable aviation fuel (SAF) and valuable consumer products with the lowest energy input per barrel installed.
10
Funding: $42.2M
Capture6 is a direct air capture start-up leveraging its technology to support climate resilience and industrial decarbonization.
Capture6 is a direct air capture start-up leveraging its technology to support climate resilience and industrial decarbonization.
11
Funding: $40.3M
Vaulted Deep provides proven technology solutions for permanent carbon removal to promote local environmental and community health.
Vaulted Deep provides proven technology solutions for permanent carbon removal to promote local environmental and community health.
12
Funding: $34.5M
Captura is a carbon capture system to support a sustainable future for the climate.
Captura is a carbon capture system to support a sustainable future for the climate.
14
Funding: $30M
Graphyte utilizes carbon dioxide removal solution that is permanent, affordable, and immediately scalable.
Graphyte utilizes carbon dioxide removal solution that is permanent, affordable, and immediately scalable.
15
Funding: $26M
NovoNutrients is working to turn waste CO2 into high-value, low-cost proteins and oils for aquaculture and beyond.
NovoNutrients is working to turn waste CO2 into high-value, low-cost proteins and oils for aquaculture and beyond.
16
Funding: $23M
Ebb Carbon works on a reverse electrochemical ocean deacidification process that captures CO2 from the atmosphere.
Ebb Carbon works on a reverse electrochemical ocean deacidification process that captures CO2 from the atmosphere.
17
Funding: $22M
Noya is reversing climate change and pulling CO2 out of the sky by retrofitting existing pieces of equipment to capture carbon.
Noya is reversing climate change and pulling CO2 out of the sky by retrofitting existing pieces of equipment to capture carbon.
18
Funding: $15M
Osmoses engages in decarbonizing gas separations to eliminate one gigaton of carbon emissions per year.
Osmoses engages in decarbonizing gas separations to eliminate one gigaton of carbon emissions per year.
19
Funding: $15M
Eion removes atmospheric CO2, permanently and verifiably, with enhanced rock weathering on soil
Eion removes atmospheric CO2, permanently and verifiably, with enhanced rock weathering on soil
20
Funding: $13.7M
By engineering a new way to use CO2, and store energy, OCOchem’s technology helps solve the dual challenges of carbon emissions and large-scale zero-carbon energy storage for customers interested in reducing their carbon footprint, energy storage costs, or both.
By engineering a new way to use CO2, and store energy, OCOchem’s technology helps solve the dual challenges of carbon emissions and large-scale zero-carbon energy storage for customers interested in reducing their carbon footprint, energy storage costs, or both.
21
Funding: $11.5M
Cemvita Factory has developed biomimicking technologies and custom-engineered microorganisms that catalyze the conversion of CO2 at ambient pressure and temperature
Cemvita Factory has developed biomimicking technologies and custom-engineered microorganisms that catalyze the conversion of CO2 at ambient pressure and temperature
22
Funding: $10M
CarbonBuilt enables concrete manufacturing to drive greenhouse gas reductions through the utilization of CO2 and other industrial wastes.
CarbonBuilt enables concrete manufacturing to drive greenhouse gas reductions through the utilization of CO2 and other industrial wastes.
23
Funding: $9.3M
Blue Planet uses it’s patented Liquid Condensed Phase Technology to convert CO2 into high-value CarbonMix building and highway materials.
Blue Planet uses it’s patented Liquid Condensed Phase Technology to convert CO2 into high-value CarbonMix building and highway materials.
24
Funding: $8.4M
Banyu Carbon focuses on developing a novel photocatalytic approach to marine carbon dioxide removal.
Banyu Carbon focuses on developing a novel photocatalytic approach to marine carbon dioxide removal.
26
Funding: $6.8M
Clairity Technology is a climate startup that creates low-cost, scalable technology to harvest carbon dioxide from the atmosphere.
Clairity Technology is a climate startup that creates low-cost, scalable technology to harvest carbon dioxide from the atmosphere.
27
Funding: $6.1M
Carba is a clean-energy firm that is creating a reactor that transforms carbon dioxide into charcoal.
Carba is a clean-energy firm that is creating a reactor that transforms carbon dioxide into charcoal.
28
Funding: $5.5M
Mitico offers accessible carbon capture technology and services to mitigate the impact of industrial emissions on people and the climate:
Mitico offers accessible carbon capture technology and services to mitigate the impact of industrial emissions on people and the climate:
29
Funding: $4.7M
Ionada develops, manufactures, and markets post combustion carbon capture systems to reduce greenhouse gas emissions.
Ionada develops, manufactures, and markets post combustion carbon capture systems to reduce greenhouse gas emissions.
30
Funding: $4.1M
Renewell Energy created a mechatronic conversion system called Artemis Prime as an energy storage solution. This "fancy regenerative winch" aims to take inactive oil and gas wells that leak pollutants and use them for energy storage.
Renewell Energy created a mechatronic conversion system called Artemis Prime as an energy storage solution. This "fancy regenerative winch" aims to take inactive oil and gas wells that leak pollutants and use them for energy storage.
31
Funding: $3.5M
CarbonZero.Eco is an ag-tech company that tackles regenerative agriculture and climate change through Biochar.
CarbonZero.Eco is an ag-tech company that tackles regenerative agriculture and climate change through Biochar.
33
Funding: $1.4M
Mango Materials produces a naturally occurring biopolymer from waste biogas (methane) that are economically competitive with conventional oil-based plastics.
Mango Materials produces a naturally occurring biopolymer from waste biogas (methane) that are economically competitive with conventional oil-based plastics.
34
Funding: $839.9K
CarbonBridge builds bioreactors for microbial gas fermentation that transforms waste gases like methane and CO₂ into valuable molecules. The startup says its technology is more efficient than other methods to synthesize molecules.
CarbonBridge builds bioreactors for microbial gas fermentation that transforms waste gases like methane and CO₂ into valuable molecules. The startup says its technology is more efficient than other methods to synthesize molecules.
35
Funding: $40K
Lillianah Technologies, based in the Houston area in Spring, uses algae to remove carbon dioxide from the atmosphere. The company sells carbon offsets to corporations.
Lillianah Technologies, based in the Houston area in Spring, uses algae to remove carbon dioxide from the atmosphere. The company sells carbon offsets to corporations.
36
Aquarry uses mine pit lakes to capture and store carbon dioxide. Scalable, permanent, low cost carbon removal in a single step.
37
Ardent pioneers advanced membrane technologies to accelerate decarbonization and transform the global industrial and energy landscape.
40
Ardent delivers membrane-based separation systems for two of industry’s toughest challenges: carbon capture and olefin recovery.
41
Kaio Labs develops CO2 conversion technologies to transform waste carbon dioxide into valuable chemicals like carbon monoxide, formic acid and ethylene. It uses an AI-powered workflow to automate discovery, with the goal being to extract these chemicals in a cost-competitive way.
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