Carbon Reduction Countermeasure from a System Perspective for the Electricity Sector of Yangtze River Delta (China) by an Extended Logarithmic Mean Divisia Index (LMDI)

The electricity sector is a complex system, especially in the Yangtze River Delta (YRD) of China. Thus, carbon dioxide (CO2) emission YRD’s during 2000–2020 was first calculated and then evaluated from two systematical dimensions cross-region whole process (production, trade, transmission, consumption) by an extended logarithmic mean Divisia index (LMDI). (1) During 2000–2020, CO2 increased 228.12 Mt to 807.55 Mt, with average annual growth rate 6.52%. Compared other regions, mix effect had strongest mitigation impact on growth. Therefore, it important for YRD build low-carbon system itself, including de-carbonization production reduction electricity-use process. (2) Nationally, trade overall mitigating 2000–2020. This result means that cross-regional cooperation or beneficial reduction. So, improve national power grids promote trade. (3) Jiangsu largest emissions, while Anhui fastest (9.71%). Moreover, economic activity most significant driver all provinces, Anhui. should strive quality vigorously cutting emissions. (4) Electricity transmission loss driving each province, Zhejiang Meanwhile, structure, intensity were inhibiting factors. Particularly, Shanghai’s structure notably weak (−2.17 Mt). Shanghai try hard increase proportion renewable energy, upgrade their equipment.