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How waste heat from Hamburg’s copper smelter is warming the city but not the planet

Video. How waste heat from Hamburg’s copper smelter is warming the city but not the planet

Updated: 23/07/2025 - 14:46 GMT+2

In partnership withthe European Commission

Hamburg, in northern Germany, is home to a one-of-a-kind district heating system. The hot water that supplies it is largely obtained from waste heat from the city’s copper smelter, meaning no CO2 is released.

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