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The second meeting of the “District Heating 2.0 Energy Efficiency Network” was hosted by the German city of Dortmund’s local power and water utility, DEW21. The meeting focused on saving energy by utilizing waste heat, the German Initiative for Energy Efficiency Networks reports (in German).
The participants learned that waste heat from the Deutsche Gasrußwerke (DGW) industrial plant, which manufactures carbon black, is set to become the primary energy source for the city’s district heating supply.
In order to improve the environmental credentials of the downtown area’s heat supply, the existing steam network is to be replaced with a hot water network fed by considerably more waste and CHP heat from the DGW plant.
Decommissioning the aging CHP station at the end of 2022 will save 45,000 metric tons of CO2 annually. By the end of 2023, DEW21 will have invested more than 100 million euros in the project, the article states.
A recent official study estimates that there is 44 to 48 TWh/a of technically usable waste heat in the state of North Rhine-Westphalia in which Dortmund, which has more than half-a-million citizens, is located. Utilizing this energy would save up to 13 million metric tons of CO2 annually. The waste heat sources can be found in the NRW “Energy Atlas” (in German).
The “District Heating 2.0 Energy Efficiency Network”, which is organized by the German district heating industry association AGFW, comprises eleven district heating companies from central, south-western and western Germany. The businesses in the network aim to achieve annual energy savings of at least 280 GWh by the end of 2020. As such they are aiming to beat the annual savings of 241 GWh achieved by the first AGFW efficiency network.
If you’re interested in learning more about or entering the German district heating market, contact our industry experts Bénédicte Winter and Robert Compton for free business support.