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World's Largest Heat Pump Powers 40,000 Homes
2 Jan
Summary
- Mannheim is building the world's largest heat pump.
- The pump will provide heat to 40,000 homes.
- It draws heat from the River Rhine, a water source pump.

The German city of Mannheim is undertaking the construction of the world's largest heat pump, a project slated to provide heating for 40,000 residences. This advanced water source pump will draw its thermal energy directly from the Rhine River, employing a system designed to minimally impact the river's temperature, with an expected decrease of only 0.1°C.
This ambitious initiative is scheduled to commence operations between 2028 and 2029, utilizing a large hot water storage tank for reserve supply. Meanwhile, other European cities are also advancing with similar green energy projects, including a multi-pump system in Aarhus, Denmark, planned for launch in 2027, and Finland's upgrades in Helsinki.
While the U.S. currently lacks similar large-scale constructions, cities like New York utilize older steam-based heating systems. New York State is actively promoting a clean heat initiative to encourage the adoption of modern heat pump technology, offering potential benefits for homeowners nationwide seeking renewable energy solutions.




