The power system serves as the cornerstone of China 's energy system. Currently, as China strives to achieve carbon peaking and carbon neutrality goals, the power system is undergoing a transition towards low-carbon practices. However, for negative power supply areas, the embodied carbon emissions generated by high proportion of purchased electricity have not received enough attention. Only through direct carbon emission reduction cannot meet the needs of a successful low-carbon transformation. It is necessary to take embodied carbon emissions into account to balance the dual objectives of ensuring secure electricity consumption and reducing carbon emissions. This approach plays a crucial role in advancing the high-quality development of China's economy and society. This study integrated the three elements of economy-energy-society, and comprehensively regulated the three sides of 'source-grid-load’ based on the balance of power supply and demand. The LEAP model of power industry was constructed to analyze the changes in power supply and demand structure and carbon emissions trends, and Beijing-Tianjin-Hebei region was taken as an example to explore the embodied carbon emission reduction path of power industry in typical negative power supply area. The results indicated that the embodied carbon emissions were one of the sources of carbon emissions from power industry that cannot be ignored in negative power supply areas. The expansion of the power gap in negative power supply areas would lead to an increase in embodied carbon emissions. However, while the introduction of purchased electricity with a high proportion of coal-fired power could relieve the power gap, it was not conducive to local embodied carbon emission reduction efforts. Further exploration revealed that giving full play to the resource potential of non-fossil energy power generation and controlling the growth rate of electricity consumption mainly in the secondary industry can effectively make up for the power gap, there by improving the effect of electricity embodied carbon emission reduction. Therefore, in the future, the two-way management of power supply and load sides of the power industry needed to be strengthened in the negative power supply area, and the support of local new energy power supply such as wind power and photovoltaic power also needed to be enhanced. At the same time, the green energy-saving management on the load side needed to be accelerated, especially in the industrial field. Finally, the inter-provincial green power trade needed to be expanded, with a significant portion of new energy purchased power requiring importation.