Carnegie Endowment for International Peace
Summary
Investments in a climate-friendly cooling system known as geothermal district cooling will help rapidly urbanizing societies resist dangerous heat indexes.
A more efficient and climate-friendly alternative to individual household investments in air conditioners is to expand district energy systems. In a district energy system, a hot or cold fluid is produced at a single, central location. It is then circulated via a network of pipes through the buildings connected to the central site. District energy requires less electricity than conventional air conditioning—in the case of district cooling, energy savings could be up to 50 percent. Such systems are more efficient at both cooling and heating buildings, including by making use of energy sources such as waste heat, which can be generated from sources including data centers or municipal solid waste processing facilities.
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