How it works
Do you want to know what district heating is and how it is produced?
Green heating – district heating
Wien Energie operates one of the largest district heating networks in Europe. More than 350,000 flats – around a third of all Vienna’s households – and more than 6,800 large customers are supplied with environmentally friendly heating.
District heating = making optimum use of the available energy
Almost all of the district heating in Vienna comes from available waste heat:
- Around two-thirds of Vienna’s district heating comes from combined heat and power (CHP) or co-generation and from the industrial sector. Wien Energie’s co-generation technology is able to generate both electricity and heat from energy sources.
- Around one-third of district heating in Vienna comes from the waste incineration plants at Flötzersteig, Spittelau, Simmeringer Haide and Pfaffenau, as well as the forest biomass power plant and biogas plant in Simmering.
- The remaining one or two percent of district heating needs come from district heating plants that are only used if required.
From the power plant to your radiator
Wien Energie’s district heating plants heat water to 160 degrees Celsius. The hot water comes to you via the 1,200 km-long district heating network. The heat of this hot water is delivered to so-called converter substations. These are located in buildings supplied with district heating and at other central locations in Vienna.
This means that your radiators contain heated water. In contrast, water in the district heating network has a temperature of 160 degree Celsius.
Good for the environment, effective against CO2
District heating conserves valuable resources, reduces CO2 emissions and does not produce fine dust particulate matter. District heating is much better for the environment than coal, oil or gas, and uses up to 75 percent less energy. In Vienna, district heating saves 1.5 million tonnes of the environmentally harmfully carbon dioxide (CO2) every year by making intelligent use of natural gas, oil and waste heat.