Why in news?
Singapore, the United Arab Emirates and business leader Dong Mingzhu were named the inaugural Cool Leaders at a September assembly. The United Nations Environment Programme (UNEP) announced the recognition in Singapore on 17 September, rather than on this edition's date. The awards highlight passive cooling, district cooling and efficient equipment within the Global Cooling Pledge effort. Cooling protects people from heat and supports services such as food storage, but expanding it can increase electricity demand and emissions. The recognition therefore concerns approaches intended to meet growing needs more sustainably. It is an award and policy initiative, not proof that every recognised technology has independently achieved zero emissions.
Cooling is a service, not just an appliance
Cooling includes keeping buildings usable during hot weather, preserving food and maintaining suitable conditions for medicines and other products. The underlying need is to protect people and goods from harmful heat. An air conditioner is one way to provide that service. Building design, shade and wider urban planning can influence how much mechanical cooling is required.
This creates a dual challenge. People without adequate cooling need better access, while increasing equipment use can raise power demand. If that electricity is carbon-intensive, indirect emissions increase. Refrigerants leaking from some systems can add a separate warming effect. Sustainable cooling therefore involves demand, equipment performance, power supply and refrigerant management together.
What the inaugural recognition identified
UNEP recognised Singapore for passive cooling and heat resilience. It recognised the United Arab Emirates for district cooling and for promoting cooling within climate and development policy. The third recipient, Gree Electric Appliances chairwoman Dong Mingzhu, was recognised for work on efficient, lower-carbon cooling technologies. These are the awarding body's stated reasons, not a comparative audit conducted for this article.
The three categories illustrate different levels of action. A city can reduce heat exposure through its built environment, a network can serve multiple buildings, and a manufacturer can improve equipment. None makes the others unnecessary. A well-designed building may still need cooling machinery, and efficient machinery still benefits from reduced heat entering the building.
Reducing heat before removing it
Passive cooling seeks to limit heat gain or encourage heat loss through design rather than relying entirely on powered equipment. Shade can reduce direct solar heating, while suitable roofs, walls and ventilation can improve indoor conditions. Trees and vegetation can also contribute to local cooling. The appropriate combination depends on climate, available water, building use and surrounding conditions.
Ventilation, for example, is useful only when the incoming air and environmental conditions make it appropriate. A strategy that works in one climate cannot be transferred mechanically to every hot, humid or polluted setting. Passive measures are valuable because they can reduce the cooling load. They should not be presented as a universal guarantee of safe indoor temperatures during all heat extremes.
Sharing a cooling system across buildings
District cooling supplies multiple buildings from a shared system, commonly by distributing chilled water through pipes. Instead of every building operating an entirely separate cooling plant, parts of the process are organised centrally. This can create opportunities for efficient equipment, coordinated operation and thermal storage. It also requires a suitable network and enough connected demand.
The economics and environmental results depend on local design. Pipe construction, plant efficiency, electricity supply and the timing of demand all matter. A district system is therefore not automatically superior in every location. Its value must be demonstrated through the service delivered and resources consumed, rather than inferred solely from its larger scale.
Efficiency and refrigerants address different emissions
More efficient equipment can provide a given amount of cooling with less electricity. This reduces pressure on power systems and can lower operating costs. Performance standards and credible testing help buyers compare products, while maintenance influences performance after installation. The benefit is greatest when efficiency is considered alongside the heat load and how the equipment is used.
Refrigerant policy addresses a different part of the problem. Hydrofluorocarbons, or HFCs, are used in refrigeration and air conditioning and can be powerful greenhouse gases. They do not deplete the ozone layer, but many have substantial warming effects. The Kigali Amendment to the Montreal Protocol provides for their phasedown, alongside the need for suitable alternatives and safe servicing.
The pledge behind the recognition
The Global Cooling Pledge emerged at the 2023 United Nations climate conference in the United Arab Emirates. Its collective ambition includes reducing cooling-related emissions by at least 68% below 2022 levels by 2050. It also seeks greater access to sustainable cooling and improved efficiency. These are shared targets, not evidence that the reductions have already occurred.
The pledge is a voluntary political initiative, distinct from the treaty obligations under the Kigali Amendment. That distinction matters when considering accountability. Awards can draw attention to useful approaches, while policies and investment determine how widely they spread. Measuring access, energy use and emissions is necessary to understand whether implementation is approaching the stated objectives.
Making recognition useful beyond the ceremony
The September assembly also discussed heat resilience and nature-based cooling. Such initiatives can connect urban design with public-health needs, particularly for people exposed to heat at home or work. However, announcements should be followed by locally appropriate projects and evidence of their effects. A cooling intervention needs to be judged against the conditions and people it is intended to serve.
The broader policy lesson is to avoid treating greater access and lower emissions as separate agendas. Planning can reduce avoidable heat, efficient systems can meet the remaining need, and cleaner energy can reduce indirect emissions. Affordable access and safe refrigerant management must remain part of that design. Otherwise, gains in one area may leave the central service gap unresolved.
Conclusion
The Cool Leaders recognition brings attention to complementary approaches rather than a single technological solution. Passive design, shared infrastructure and efficient equipment can each contribute under suitable conditions. Their real value lies in providing dependable cooling with lower resource use and climate impact. The next step is measurable delivery, especially for people whose present access to safe cooling remains inadequate.