关键词: 电力间接排放, 电碳协同, 剩余电力排放因子, 绿色电力证书

Abstract: Scientifically quantifying indirect emissions from electricity consumption is an important basis for carbon accounting in China under the dual-control policy for total carbon emissions and carbon intensity. As the “electronic identity” of renewable electricity, green electricity certificates (GECs) are expected to play an important role in carbon-related accounting. Based on the calculation principles of indirect electricity emission factors, this study evaluates the feasibility of using GECs to calculate such factors from three aspects: theoretical applicability, measures to avoid double counting, and the calculation of residual electricity associated with inter-regional power imports and exports. A method is proposed for calculating residual electricity emission factors at the national and regional grid levels by excluding the electricity represented by GECs. By using GECs to identify the green attributes of electricity in the residual mix while avoiding double counting, this approach can partly address the difficulty of tracing physical electricity flows. It also responds to the practical need to link GECs with carbon accounting and provides an additional option for market-based accounting of indirect electricity emissions at the industry, enterprise, and product levels.

Key words: Indirect electricity-related emissions, Electricity-carbon synergy, Residual mix factor, Green electricity certificate