Estimation and Its Evolution of CO<sub>2</sub> Emission Factors from Heat Power Consumption in China: 2000-2019

Abstract

CO₂ emission of energy consumption includes direct and indirect emission, and CO₂ emission of heat power consumption is indirect emission. However, most scholars do not include heat power consumption in CO₂ emission calculation of energy consumption, which will result in a certain degree of deviation between calculation results and actual situation, and affect scientificalness and accuracy of research conclusions. Therefor, it is of profound significance to estimate CO₂ emission factor from heat power consumption, and which is served as a basis for calculating indirect CO₂ emission of heat power consumption. Based on statistical data of energy intermediate and final consumption as well as CO₂ emission accounting from heat power production and supply, this paper gives an estimation the CO₂ emission factor of national heat power consumption in China from 2000 to 2019. Results are shown as following: Affected by factors such as the changes in CO₂ emission efficiency of heating supply and the increase in the proportion of natural geothermal energy in the heat power consumption structure, CO₂ emission factor of heat power consumption has shown a downward trend in China, from 0.136 tCO₂/GJ to 0.117 tCO₂/GJ, which shows a significant decrease. In addition, the estimated result after 2013 is slightly higher than the national standard for heat poweremission factor of 0.110 tCO₂/GJ, but this difference is very small in last two years.