Transformation study on the decarbonisation of heat supply in the region of Spremberg, Hoyerswerda and Weißwasser by 2050


Versorgungsbetriebe Hoyerswerda GmbH

Duration  April 2022 – September 2023


The decarbonisation of the heating sector plays a central role in achieving the climate and energy goals. The transformation of the heat sector towards decarbonised heat generation through renewable energies and reduced heat demand through increased energy efficiency is associated with a multitude of challenges.  In particular, the great heterogeneity in terms of technologies, market and cost structures represents a central challenge. In addition to individual heating systems, heating networks play a decisive role in the transformation. The expansion, modernisation and continued use of heating networks are associated with high infrastructure costs and therefore entail a high investment risk. For this reason, the integral planning of a decarbonisation strategy is of great importance.


We consider this project to be an important lighthouse project for the entire structural transformation region. In this context, it is particularly important to combine security of supply and ecological sustainability on the basis of innovative technological solutions with economic benefits for the region. The economically successful transformation of the energy supply in Lusatia can thus also serve as a model for other regions affected by the coal phase-out.

Tasks of IREES

  • Building modelling to determine the consumption of all sinks in the heating network

  • Development and modelling of the potential heat supply in 2050

  • Potential analysis to narrow down the solution space

  • Participation in the stakeholder dialogues

Project partners

  • Fraunhofer IEG

  • Tilia


Dr. Jan Steinbach
Dr. Jan Steinbach
Eftim Popovski
Eftim Popovski
Johannes Haller
Johannes Haller