Introduction   By combing and quantifying the indexes, the weights of the first, second and third grade indexes of the green power grid are obtained.

    Method   In 2013, China Southern Power Grid Company issued "3C Green Power Grid Construction Evaluation Standard" , which was used to guide the construction of Green Grid of Southern Power Grid Company. In the process of standard extension, researchers found that the standard used a " list" evaluation system, which had a weak guiding effect on the selection of technology for the project. In 2017 and 2018, Southern China Power Grid Company launched a revision of the standards. The weight of the index is determined by the group expert analytic hierarchy process, which combines the advantages of the group expert method and the analytic hierarchy process method, and relied on the decision making of the group expert, and reduces the error of the group expert decision by mathematical method. It was suitable for the quantification of green power grid.

    Result   Setting up a pool of experts that includes leaders and technological experts, carry out the first-level index scoring work for the leaders, and carry out the secondary and tertiary index scoring work for the technological experts. According to analytic hierarchy process (AHP), the evaluation indexs of green power grid is combed and quantified.

    Conclusion   Group expert Analytic hierarchy process (AHP) is suitable for the quantitative evaluation of green power grid. This index quantification work is the solid foundation for the green grid quantification appraisal work.