Valued at USD 35.64 billion in 2024, the transcritical CO2 market is projected to reach USD 41.34 billion in 2025 and USD 155.66 billion by 2034, growing at a CAGR of 16.0% during the forecast period 2025–2034. Growth is driven by increasing demand for energy-efficient refrigeration and the phasing out of harmful refrigerants. Key players include Advansor A/S, Baltimore Aircoil Company Inc., BITZER Kühlmaschinenbau GmbH, Carnot Refrigeration Inc., Carrier Commercial Refrigeration, Danfoss GmbH, Emerson Climate Technologies, Green & Cool World Refrigeration Ab, Henry Technologies Inc., Hill Phoenix Inc., Mayekawa MSG. Co. Ltd., SCM Frigo SPA, Shecco SPRL, and Systems LMP Inc. For B2B buyers and suppliers, the transcritical CO2 market is defined by regulation, efficiency and commercial adoption.

A Natural Refrigerant With Environmental Advantages

The transcritical CO2 market covers the refrigeration and heating industry that uses carbon dioxide as a natural refrigerant in a transcritical cycle. Unlike traditional refrigerants, transcritical CO2 operates at higher pressures and temperatures, which makes it suitable for heat pumps, supermarkets, food processing and ice skating rinks. One of the primary driving factors is low environmental impact. Carbon dioxide offers zero ozone depletion potential and minimal global warming potential, and industries are adopting these systems to comply with stringent regulations aimed at phasing out synthetic refrigerants known for harming the ozone layer and contributing to global warming. Supply is also developing: in May 2025, Gruppo SIAD, with Marchesi Ginori Lisci and Solvay, announced plans to build a biomethane and bio-CO2 production plant in Italy to support sustainable gas production.

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Energy-Efficient Refrigeration Systems in Cold Climates

Energy efficiency is another significant growth factor. Transcritical CO2 systems are known for high energy efficiency, particularly in colder climates where traditional refrigerants tend to lose efficiency. This has increased adoption in regions with colder climates, as the systems can provide efficient heating even in sub-zero temperatures. In 2024, the refrigeration segment dominated the function category, as industries including food and beverage, cold storage and pharmaceuticals adopted energy-efficient refrigeration systems to align with environmental regulations and reduce their carbon footprint. The ability to maintain efficiency at low temperatures makes these systems well suited to applications where optimal temperature control is critical.

Supermarket Refrigeration Drives Retail Adoption

The widespread adoption of transcritical CO2 in the supermarket sector is a key growth driver. Retail is expected to hold the largest revenue share by application, because supermarkets, hypermarkets and convenience stores have extensive refrigeration needs. Supermarket refrigeration is on the front line of adoption, as these systems deliver superior energy efficiency and optimal cooling performance while minimizing energy consumption. With energy costs a significant operational consideration for retailers, efficiency gains contribute to cost savings. Regulations favoring low-GWP and zero-ODP systems further position transcritical CO2 as a responsible and sustainable choice for supermarket operators. In December 2024, Enex Technologies launched two natural refrigerant solutions, SENNA XS and KUBE, designed to enhance refrigeration efficiency for supermarkets and industrial applications.

Regional Insights and Restraining Factors

Europe dominated the market in 2024, led by demand in the UK, Germany and France across supermarkets, convenience stores, and food processing and storage facilities. The region benefits from low operating costs, non-toxicity and non-flammability, as well as strict government regulations on greenhouse gases. North America is anticipated to grow at the fastest rate, supported by the concentration of leading food manufacturing companies using CO2 for refrigeration and a strong heat pump manufacturing sector, particularly in the United States. A key restraint is the high initial cost of implementing transcritical CO2 systems, along with the complexity of installation, operation and maintenance, which require skilled expertise. Prominent players are investing significantly in research and development focused on the efficiency, dependability and safety of transcritical CO2 systems, including compressors, heat exchangers and system controls designed for the special thermodynamic properties of CO2.

Conclusion

The transcritical CO2 market is supported by regulatory pressure, proven efficiency and growing commercial adoption. Suppliers that address cost and skills barriers while advancing system scalability are well positioned for growth through 2034.

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