我国发电能源结构持续优化

Group 1 - The 2023 national average carbon dioxide emission factor for electricity is 0.5306 kgCO2/kWh, a decrease of 1.1% from 2022's 0.5366 kgCO2/kWh, attributed to the optimization of the power generation energy structure and a reduction in the proportion of thermal power generation [1][5] - The average carbon dioxide emission factors for electricity in 2023 for various regions are as follows: North China 0.6361 kgCO2/kWh (down 6.1%), Northeast 0.5122 kgCO2/kWh (down 8.0%), East China 0.5500 kgCO2/kWh (down 2.1%), Central China 0.5271 kgCO2/kWh (down 2.3%), and Northwest 0.5543 kgCO2/kWh (down 5.4%), mainly due to the decrease in the proportion of thermal power generation [2][5] - In contrast, the Southern and Southwestern regions have average carbon dioxide emission factors of 0.4042 kgCO2/kWh (up 4.5%) and 0.2472 kgCO2/kWh (up 9.0%), respectively, due to reduced hydropower output from lower rainfall, leading to an increased share of thermal power generation [2][5] Group 2 - At the provincial level, 20 provinces, including Beijing, show a downward trend in the average carbon dioxide emission factor for electricity in 2023 compared to 2022, influenced by a decrease in thermal power generation and an increase in the proportion of clean energy imported from other provinces [3][6] - Conversely, 10 provinces, including Guangdong, have seen an increase in their average carbon dioxide emission factors due to a decline in hydropower generation and an increase in thermal power generation [3][6] - The national average carbon dioxide emission factor for electricity, excluding market-based non-fossil energy, is 0.6096 kgCO2/kWh, an increase of 4.1% from 2022's 0.5856 kgCO2/kWh, primarily due to the growth of market-based non-fossil energy transactions [3][6] Group 3 - The national fossil energy electricity carbon dioxide emission factor is 0.8273 kgCO2/kWh, a decrease of 0.6% from 2022's 0.8325 kgCO2/kWh, mainly due to a reduction in the proportion of coal-fired power generation and a decrease in the carbon content of coal used in thermal power generation [3][6] - Overall, the changes in the carbon dioxide emission factors for electricity in 2023 reflect the actual achievements of China's clean and low-carbon transition in the power industry [7] - The country plans to continue improving the calculation methods for carbon dioxide emission factors and strengthen the analysis of measured parameters to support the establishment of a unified and standardized carbon emission statistical accounting system [7]