Copenhagen Infrastructure Partners (CIP) is working on its 1 GW HØST PtX project in Esbjerg, on the west coast of Denmark. The project aims to produce both hydrogen and ammonia. The excess heat can heat up to 15,000 homes in the district heating network of Esbjerg, owned and operated by DIN Forsyning. The above examples are all good showcases for using excess heat from Power-to-X and Carbon Capture in district heating. In general, it is essential to consider the location of Power-to-X facilities to ensure that the surplus heat can be utilized as much as possible in district heating systems. Strategic placement of these facilities can maximize the efficiency and benefits of this integration, creating a win-win situation for all stakeholders involved. Therefore, Power-to-X companies should look at the complete set of infrastructure needs when finding the best location, including the possibility of selling surplus heat to district heating.
At the same time, by tapping into surplus heat, district heating systems can provide CO2-neutral heating, offering a viable alternative to fossil fuel-based heating. Hence, it not only enhances the overall energy efficiency of Power-to-X processes but can also reduce costs for consumers and the overall carbon footprint of district heating. This partnership between Power- to-X producers and district heating providers is a win-win, ensuring a more sustainable and cost-effective energy solution for both parties. Real-world examples from Denmark Let’s take a closer look at how Danish district heating systems and Power-to-X companies are working together and leading the charge towards this green revolution. In Copenhagen, the district heating companies VEKS and CTR are working in collaboration with Ørsted 2 , a leading renewable energy company, to utilize the surplus heat from Ørsted’s coming Carbon Capture plant, which will be installed at the straw-fired
Figure 1: Up to 25% of the energy for Power-to-X and Carbon Capture can be utilized in district heating. Sources: The report ”Power-to-X and District Heating” by the Danish District Heating Association, Grøn Energi, COWI and TVIS estimates a potential for utilizing surplus heat from electrolysis of up to 25%, while the report ”CO2 capture at Danish waste-to-energy plants” by Rambøll for Dansk Affaldsforening estimates, that carbon capture can increase the heat production from the CHP or Waste-to-Energy facility by up to 20% compared to a plant without carbon capture.
The integration of surplus heat from Power-to-X in district heating systems not only benefits Danish cities but also has a broader global impact. By showcasing successful examples of this integration, Denmark can serve as a model for other countries looking to transition towards sustainable energy systems. This accelerates the global fight against climate change and opens up new avenues for technological innovation and international collaboration.
boiler at Avedøre CHP plant in Copenhagen. This innovative partnership, which will be able to heat 16,000 homes, is beneficial to all parties involved and a good showcase for sector integration. Similarly, the district heating company TVIS has embraced the potential of surplus heat, working closely with the hydrogen production project HySynergy, owned and operated by Everfuel. Located in Fredericia, HySynergy produces green hydrogen through electrolysis, with excess heat from the process utilized in the district heating system. In the first phase of the project, which includes 20 MW electrolysis, the excess heat can heat up to 1,800 homes every year. The second and third phases of the project aim to install 300 MW and 1 GW electrolysis, respectively, thereby increasing the potential for district heat integration significantly.
For further information please contact: Jannick Hauschildt Buhl, jhb@danskfjernvarme.dk
Made with FlippingBook - Online magazine maker