Abstract:The evaluation of power grid development is an important part of the closed loop management of power grid planning, which is of great significance to the improvement of the level of power network planning, construction and operation. According to the current status of power planning research, however, the study of power planning evaluation is a relatively weak. It is urgent to establish a reasonable evaluation index to carry out evaluation and improve the level of the power planning and construction. Based on the characteristics of the power grid, this paper constructs a practical evaluation index system from five aspects: safety, green, coordination, high efficiency and high quality. Then, the trend analysis and comparative analysis are applied to evaluate the development level of the southern regional power grid scientifically, systematically and objectively from five aspects, including safe power supply, green development, coordinated development, efficient development and high quality development. Finally, some suggestions on improving the development level of the southern regional power grid are proposed in the light of the results of the evaluation. The evaluation index and method proposed in this paper, is closely related to the engineer practice and is easy to operate. It is of great significance for similar power grid development assessment in the future.