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Studies on decarbonizing district heating systems are either system specific or use artificial district heating systems. In contrast to the liberalized electricity sector, there are no disclosure obligations in the district heating sector. This paper offers eight district heating system categories, representing the landscape of district heating sys...
In order to limit the effects of climate change, the carbon dioxide emissions associated with the energy sector need to be reduced. Significant reductions can be achieved by using appropriate technologies and policies. In the context of recent discussions about climate change and energy transition, this article critically reviews some technologies,...
The research project DEKADE-F-Wärme ("Decarbonizing district heating systems through electricity and heat sector coupling and integration of renewable energy sources - Sub-project: Unit commitment of district heating systems and electricity market modeling") aims to assess strategies for the decarbonization of the district heating sector in Germany and to quantify their impact on the electricity market. The potential to reduce the CO2 emissions in the German district heating sector is evaluated. In this context, mathematical models for unit commitment in district heating networks and of the German electricity market are being further developed at the Chair. In cooperation with the Chair of Sustainable Energy and Environmental Technology at the University of Applied Sciences and Art Hildesheim/Holzminden/Göttingen (HAWK) and the industry partners Grosskraftwerk Mannheim AG, MVV Energie AG, Vattenfall Europe Wärme AG and AGFW, the possibilities and constraints of the integration of high shares of renewable energies in the district heating systems are evaluated from both technical and economic perspectives. The findings are implemented in the mathematical optimization models. Both electricity and district heating market models are coupled in order to consider their independencies. Expansion scenarios, such as the development of heat demand and the increasing share of renewable energy, are developed and investigated with the optimization models. As a result, various cost- and CO2-efficient configurations of the German district heating sector and their effects on the German electricity sector and power plant fleet will be evaluated. Tangible recommendations for investment will be provided to the district heating system operators and areas for political action will be identified. The work is included in the international Annex IEA DHC Annex TS3 „Hybrid Energy Networks“. The DEKADE-F-Wärme research project is funded by the Federal Ministry of Economics and Energy as part of the 6th Energy Research Programme. Grant reference number: 03ET4071A