Sector coupling is defined as the process of interconnecting power generating resources with energy consuming sectors such as the heating, transport, gas, and other. This is in order to economically optimize operations of the energy system and facilitate the integration of the intermittent renewables through enhanced energy system flexibility. There are two main strategies: first, through electrification by promoting electric mobility and replacing traditional heating systems with electric heat pumps, to use renewable electricity instead of fossil fuels. The second strategy is through “Power-to-X”, whereby synthetic fuels are produced from renewable electricity through transformation into heating (P2H) or cooling, gas (P2G), or liquid (P2L) for use in final consumption. The generated fuels and carriers such as hydrogen, methane, gasoline, or kerosene can also reduce CO2 emissions using the existing gas and heat infrastructure.
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