Calculation Method of Provincial Grid Emission Factors Considering Clean Energy Power Generation

The power industry is the largest carbon emission department in China, and the accurate calculation and assessment of grid carbon emissions is the basis for achieving its carbon emission reduction. At present, the carbon emission accounting of the power industry is mostly based on the average emission factor (AEF), which has issues of poor timeliness and large error. Therefore, the calculation method of marginal emission factor (MEF) of provincial power grid is proposed. The MEF considers clean energy power generation, time, climate and other factors, which can characterize the dynamic relationship between power generation and carbon emissions in different periods of time, and provide method support for carbon emission analysis and reduction path of power system. Based on the energy consumption data of provincial power system, the mathematical model of MEF is derived. On this basis, the MEF of Sichuan power grid from 2011 to 2020 is calculated, and the change trend of MEF and its influencing factors are analyzed to provide a new method for calculating the emission factors of China’s power grid.