Industrial excess heat and residential heating: Potentials and costs based on different heat transport technologies

Markus Fritz and Dorian Werner

No S11/2022, Working Papers "Sustainability and Innovation" from Fraunhofer Institute for Systems and Innovation Research (ISI)

Abstract: Using industrial excess heat for residential heating can increase energy efficiency and thus be part of the solution to achieving the EU's climate targets. However, industrial plants are often located in industrial areas and thus away from residential areas. Therefore, the excess heat has to be transported to the end-using households. In this paper, we determine the economic excess heat potential for residential heating in Germany, considering different transport technologies. For this purpose, we develop a bottom-up optimisation model, which identifies the technology with the lowest transport cost for over 6,000 excess heat sources. In addition, an optimisation is carried out to maximise the amount of used excess heat, taking into account cost thresholds. Our results show that about 12-17 TWh of excess heat can be utilised up to the cost threshold of 0.1 €/kWh. We see that district heating is the most selected technology for cost optimisation. When optimising the amount of excess heat used, however, it becomes apparent that the technologies sewer networks and sorption cycles are also used. The technologies for using industrial excess heat are available, but the next step must be market penetration and up-scaling.

Date: 2022
New Economics Papers: this item is included in nep-ene
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Persistent link: https://EconPapers.repec.org/RePEc:zbw:fisisi:s112022

DOI: 10.24406/publica-378

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