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Hamburg considers itself somewhat a pioneer in decarbonized heat and is home to a number of pioneering projects. For a number of years, the city-state’s Environment and Energy Authority has been pushing for a change to federal law so that a large-scale heat pump system planned for the city’s sewage treatment plant would be eligible for government funding.
Now that wish has been granted. The federal law on cogeneration (KWKG) has been changed and heat from treated sewage is now recognized in the same way as ambient heat from environmental sources such as water or the air.
The system in question is based on a modern gas turbine power station and a large-scale heat pump. It will be built at Hamburg’s Dradenau sewage treatment plant and will form part of the Harbour Energy Park. Under the modified legislation, it will be considered an innovative CHP system and thus be eligible for funding. It is set to become the first large-scale sewage heat pump system in the country.
Hamburg’s Senator for Environment and Energy Jens Kerstan: “Large-scale heat pumps in sewage treatment plants make ecological sense but until now their disadvantage in terms of funding meant they rarely made economic sense. We advocated intensively for the federal government to address this issue and now the cabinet has accepted our proposition. It is a big success for climate protection and decarbonizing the heat sector. And it is a breakthrough not only for Hamburg: I expect many municipalities across Germany will follow our example in the near future. It was worthwhile Hamburg leading the way with an ambitious plan,” he continued. “As a renewable source in the energy mix, [the new system] will play a significant role in rapidly taking the old coal power station in Wedel off the grid.”
Erfolg für Hamburg – klimafreundliche Technik wird rentabel (Press Release in German)
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