Environmentally friendly district heating thanks to cogeneration.

A first in Germany

1893 marked the first time that electricity and heat were simultaneously generated in a Hamburg thermal power station. The first customer to avail of this energy was Hamburg’s city hall. Today, Vattenfall supplies around 480,000 customers in the Hanseatic city with district heating. Hamburg’s district heating network is 840 kilometres in length. If you count both the flow and return flow pipes, its length almost doubles.



of district heating network

90% utilisation of fuel energy

Optimum use of fuels

Vattenfall’s Hamburg energy generating plants work together as a large network. This enables them to use various different fuels for heat generation. District heating is generated in thermal power stations and delivered to buildings in the form of hot water. The corresponding generation process produces both heat and electricity. So-called cogeneration, or combined heat and power (CHP), facilitates the optimum exploitation of the fuels used. This is because the heat created through electricity generation is not simply released into the atmosphere unused, but rather stored and distributed to homes, businesses and industries. As a result, around 90 per cent of the fuel energy is utilised.

30% fuel savings

Diverse areas of application

Cogeneration leads to fuel savings of up to 30 per cent compared with single generation procedures. It is therefore a more resource-friendly and, as such, climate-friendly means of producing power. 90 per cent of Hamburg’s district heating is produced through cogeneration. Cogeneration energy is used across many areas, and can be found in district heating and cooling, as well as in the decentralised supply of power via cogeneration units.

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