Carbon Clean Solutions (CCS) develops carbon dioxide (CO2) separation technology for industrial and gas treating applications. The company's step-change technology significantly reduces the costs and environmental impacts of existing CO2 separation techniques. The company aims to provide customized, low-cost, energy-efficient solutions for carbon dioxide separation to customers. It was founded in 2009 and is based in London, U.K.

Carbon Capture Machine has developed a technology for carbon emission reduction that profitably converts waste carbon dioxide into useful materials. Proprietary CCM technology dissolves combustion CO2 from any source in dilute alkali, converting it to carbonate ions with efficiency approaching 100%. The carbonate solution is reacted with readily and abundantly available calcium (Ca++) and magnesium (Mg++) brines to selectively precipitate CaCO3 (Precipitated Calcium Carbonate, PCC) and MgCO3·3H2O (Precipitated Magnesium Carbonate, PMC).

CleanO2 offers CARBiN-X, a decentralized commercial carbon capture device that reduces greenhouse gas (GHG) emissions in the heating industry. Its solutions divert these emissions into its system where the carbon dioxide is absorbed by a chemical, converting into a carbonate which sequesters it in a form of mineralized CO2, known as pearl ash, the pearl ash from the direct air capture is then collected from each site and turned into consumer goods such as soap, shampoos, cleaning products, and fertilizers. The company was founded in 2013 and is based in Calgary Canada.

ReCarbon creates a technology platform that recycles carbon emissions into revenue-generating products. The company specializes in building proprietary plasma generation systems that convert industrial carbon emissions into industrial gases.

Aqualung Carbon Capture’s membrane technology speeds up decarbonization and mitigates carbon emission costs by offering a safe, absorbent-free, and highly compact carbon capture system for industrial flue gas and biogas. This removes a significant amount of otherwise hard-to-abate CO2. The company aims to be a driving force in the energy transition by deploying industrial-scale carbon capture units, offering a complete, well-to-wake solution for industrial CO2-emitters. Aqualung Carbon Capture is based in Oslo, Norway.

Clean Carbon Technologies has pioneered carbon capture in a profitable way by converting the waste effluent gases into carbon products like carbon nanotubes aggregates, CNT polymer resins, CNT yarn, and CNT sheets. It retrofits its reactor inside a factory near the source of emission or flare. Catalyst is fed on a regular basis and CNTs are collected and stored in large cylindrical containers, which are later transported to CCT's warehouse and purification center for various chemical treatment, sorting, and packaging before sale.