#6531. Integrating combined heat and power in index decomposition analysis of the power sector

February 2027publication date
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Journal’s subject area:
Energy (all);
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Abstract:
Different technological and policy solutions have been developed to decarbonise energy systems and improve energy efficiency. Combined heat and power (CHP) is one solution that can bring about emission reductions by improving fuel use efficiency through the simultaneous generation of electricity and heat. Index decomposition analysis (IDA) is a tool that has been widely used to study emission trends and quantify the contribution of different measures to emission reductions. Techniques to estimate the emission reductions from CHP using IDA, however, have yet to be developed. This study develops new decomposition frameworks for two methods that have been used to estimate the carbon intensities of CHP and compares their performance theoretically and empirically using the data of Canada, Denmark and Finland. Based on the analysis, the substitution method is recommended as it can be more universally applied to different energy systems. Through the substitution method, the impact of different climate mitigation measures such as power generation efficiency and CHP can be compared within a single IDA framework.
Keywords:
Cogeneration; Combined heat and power; Generation efficiency; Index decomposition analysis; LMDI

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