Green Cooling Initiative

Commissioned by: German Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection (BMUV)
Partner countries: Bangladesh, Colombia, Honduras, Kenya, Thailand, Uganda, Vietnam (with regional hubs in the highlighted countries)

Map with partner countries

Partner Countries

Rising temperatures and population, progressing urbanisation and economic growth are driving up the worldwide cooling demand, particularly in developing countries. But many of the refrigerants and insulating foams currently in use are harmful to the environment. In 2023, it is estimated that the refrigeration industry accounted for around ten to twelve per cent of global greenhouse gas emissions.


The Green Cooling Initiative contributes to raising international awareness of the significant mitigation potential associated with environmentally- and climate-friendly cooling technologies. In its third phase, GCI supports its partners worldwide by accelerating the transformation of the cooling sector towards energy efficient technologies using natural refrigerants. This includes policy advise, technology transfer and capacity building. 

Green Cooling is the most viable way to meet the growing cooling demand and protect our climate at the same time. It is based on two principals: using natural refrigerants with an ultra-low global warming potential and highly energy-efficient appliances. Ideally, the energy comes from renewable sources. All measures should be complemented by passive cooling, e.g. shading, surrounding vegetation and good insulation.


The work of the Green Cooling Initiative III is based on three pillars:

  • Policy advise: We support key actors with access to Green Cooling instruments and arguments, offer demand-based support services and strengthen networking between stakeholders. We shed light on appropriate financing mechanisms.
  • Technology transfer: We pilot innovative Green Cooling technologies in the partner countries and in cooperation with the private sector. We therefore demonstrate their technical and economic feasibility and spark interest in further upscaling. 
  • Capacity building: We train policy makers, refrigeration trainers and technicians on the handling and characteristics of natural refrigerants. In addition, we offer needs-based trainings.

Moreover, the Green Cooling Initiative III recognises that exchange between technology suppliers and users, as well as between the industry, public institutions and civil society is important for the promotion of said technologies. One of the main goals is therefore to create global and regional networks with representatives from different sectors (see Network).


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Targeted policy advice based on Cooling Strategies will support partner countries in the implementation of cooling technology standards and measures, whilst capacity building will allow them to sustainably manage their technology transformations. Voluntary private sector contributions will increase transformational readiness and will generate public-private partnerships. Proposals to financing institutions can provide replicable funding models and instruments to facilitate access to Green Cooling technology.


The phase-out and phase-down of F-gases and the increase in energy efficiency in the RAC sector make it easier to achieve ambitious NDCs, which were defined by UNFCCC COP21 as the basis for global GHG emission savings. So far, Ghana is one of the few African countries that has integrated F-gases into its NDC to a limited extent. GCI advised Ghana on this by drawing up a GHG inventory of the RAC sector, on the basis of which a Cooling Strategy for emission reduction measures was drafted.

Latest Publications

CO2-training for 8 trainers organized in Germany by GIZ Proklima and Carrier

03.07.2024 , News :

Within one week of CO2-Training at the "CO2OLacademy", eight refrigeration technicians and policy makers from the cooling sector learnt how to handle this natural refrigerant.

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Eight refrigeration trainers and politicians waited exited for the first day of their training in front of the hotel – they were all looking forward to finally start it after weeks of online preparation and organization.

All of them participated in a 12-hour online training on CO2 transcritical systems with Ejector for supermarkets which took place to build basic knowledge on CO2 as a refrigerant. It was open to more than 100 Refrigeration and Air Conditioning (RAC) technicians and trainers worldwide. Out of these participants, the 8 persons were nominated for the in-depth, hands-on practical training in Germany, where they could simulate the functioning of a CO2 supermarket system, including practicing how to solve problems like leaks.

"It is essential to ensure that the cooling system is well maintained as any leaks can contribute to the climate crisis", Mercy Njuki.

A CO2 training rack for Kenya

They spent five days full of practical and theoretical sessions at the “CO2OLacademy” of Carrier in Mainz-Kostheim. The training which was conducted by GIZ and Carrier was jointly financed by Carrier and the Green Cooling Initiative (GCI) III under the International Climate Initiative (IKI) and it was commissioned by the German Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection (BMUV).

The training was conducted on a CO2 training rack that will be shipped to Kenya to continue CO2 trainings, aiming to build capacities on CO2 refrigeration in the East African Region. CO2 is already used as a refrigerant in supermarkets in many countries. Participants came from Bangladesh, the Philippines, Vietnam, Kenya, and Colombia.

CO2 as a environmental friendly refrigerant

CO2 refrigeration systems are sustainable and friendly to the environment as the global warming potential (GWP) of the former used refrigerants is up to 5690 times higher than the one of CO2. This is why it is of high relevance for the protection of our climate to increase the knowledge on this refrigerant.

Due to its thermodynamic properties CO2 is complex to handle and requires further training to service and maintain these systems. The training navigated the technicians through the thermodynamics of CO2, transcritical systems and their components, CO2 in operation and safe handling of CO2.

If you want to learn more about CO2 as a refrigerant, watch our video:

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