Abstract
This work examines the role of centralised cogeneration plants as one of the potential pathways of a future decarbonised energy system. Even in this context, thermal power plants will still exist and the utilisation of their excess heat via district heating networks can assist the decarbonisation of the built environment. In particular, the potential of existing thermal power plants to operate as combined heat and power (CHP) plants is assessed and their impact on the power system quantified. To do so, the European heat demand for the built environment is described, focused on the heat demand supplied with fossil fuels, and the European power sector is discussed. Then, a power system model (Dispa-SET) is used to evaluate this coupling pathway in terms of operating costs, efficiencies and associated CO2 emissions. The analysis is developed for the current and future European power system. Results show that the conversion of thermal into CHP plants increases the efficiency and reduces both the operating costs and the environmental impact of the energy system. Not only that, it also offers alternative flexibility options when coupled with thermal storage. Still, large investments regarding the deployment of thermal networks are required to leverage the full CHP potential.
Highlights
The heating and cooling sector is recognisedas a priority to achieve the decarbonisation targets set for the European energy sector
The European heat demand for the built environment is described, focused on the heat demand supplied with fossil fuels, and the European power sector is discussed
We, first, describe the European heat demand for the built environment, focused on the heat demand supplied with fossil fuels, as well as the European power sector
Summary
The heating and cooling sector is recognisedas a priority to achieve the decarbonisation targets set for the European energy sector. It accounts for almost half of the EU (European Union) energy consumption. The EU Heating and Cooling Strategy highlighted the synergies in the energy system where district heating and cooling, cogeneration and smart buildings are expected to play a major role [2]. Both documents, acknowledge the need of an integrated approach within the energy system.
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