Climate and Ozone Protection Alliance (COPA)

Commissioned by: German Federal Ministry of Economic Affairs and Climate Action (BMWK)
Partner countries: Global, China, Ghana
Implementing partners: United Nations Industrial Development Organization (UNIDO), United Nations Development Programme (UNDP)

Demand for cooling and air conditioning units is rising sharply in the Global South. As a result, there is an ever-growing number of appliances and foams containing halogenated hydrocarbons. These are either ozone-depleting substances (ODS) or have a high global-warming potential (hydrofluorocarbons, HFCs). When old cooling devices are not disposed of in an environmentally friendly way, the legacy ‘ODS and HFC banks’ release emissions freely into the atmosphere.

The disposal of ODS and HFC banks is not currently a priority in the international climate debate. To date, the international community has only agreed to regulate the production and consumption of ODS in the Montreal Protocol and to phase-down climate-warming HFCs in the Kigali Amendment. An agreement on how to dispose of existing ODS and HFCs is still needed.


Policy-makers are taking measures to get rid of ODS and HFC banks and thereby reduce greenhouse gas emissions. They are also incorporating this issue into their national climate strategies.


The Climate and Ozone Protection Alliance (COPA) is combating emissions from old cooling devices in China and Ghana. As the project progresses, more countries demonstrating considerable potential for reducing ODS and HFCs will be identified and supported. As part of this, the plan is to expand networks and to establish the Alliance in the countries concerned at political level. COPA is focusing above all on working with metropolitan regions, as this is where large quantities of legacy ODS and HFCs build up. In terms of putting reduction measures into practice, COPA carries out status quo analyses and implements practical models in selected metropolitan regions.

Last update: November 2022

Image: Shutterstock / Mikhail P.

For further information on COPA please also visit (opens in a new window).

Partner countries

Latest News

Video | Photovoltaic-powered Air Conditioning in Buildings: Technical economic analysis

07/2022 , Publication - Video :

On 9th June, GIZ Proklima hosted a webinar to present and discuss the results of a new study, which covers global market trends of solar PV-powered split-type AC systems and its technical components, economic analyses for hybrid and off-grid cases carried out in thirteen partner countries worldwide, and a case study on solar AC by Médecins Sans Frontières in Haiti. The study aims to contribute to further developing the highly potential but still infant PV AC market.  

© shutterstock_167181932 / Mariusz Niedzwiedzki (opens enlarged image)© shutterstock_167181932 / Mariusz Niedzwiedzki

Space cooling in buildings is characterized by enormous growth rates due to increasing ambient temperatures, growing population and urbanisation. Today, cooling in buildings is largely dominated by mid to low appliance energy efficiency levels, highly climate-damaging refrigerants as well as fossil-fuel based electricity supply, generating huge amounts of GHG emissions. Solar energy sourced to operate efficient air conditioners (AC) using climate-friendly natural refrigerants can play a critical role in significantly decoupling GHG emissions from a rapidly growing cooling demand in buildings. Further, driven by trends such as declining costs of solar PV and energy storage equipment, on the one hand, and efficiency improvements of AC technologies, on the other hand, solar-powered cooling is gaining an increasing technological and economic potential. 

Contact persons: Anja Werntges, Philipp Munzinger 


Further information :

Link to the study (opens in a new window)

Watch the recording

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