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‘People Are So Proud of This’: How River and Lake Water Is Cooling Buildings


Networks of pipes and heat exchangers can transfer excess heat from buildings into nearby bodies of water—but as the world warms, the cooling potential of some water courses is now diminishing.

In Rotterdam, Netherlands, one of the company’s installations helps to cool buildings, including apartment blocks, police offices, a theater and restaurants, using water from the River Meuse. A key component of Parisian climate adaptation plans is the river-supplied cooling network, the pipes for which currently cover a distance of 100 kilometers, though this is due to expand to 245 km by 2042. However, district cooling networks including Paris’ can be expensive to install and maintain—meaning they work best in densely populated areas such as cities where large numbers of people will likely benefit from them.

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