The Ultra-high voltage AC transmission pilot project has been put into operation and commissioning,which has preliminarily testified the technical feasibility and also provided experimental data for the economic research.This paper compares the economic efficiency of the UHV pilot project with that of the 500kV transmission technology based on the principle of same transfer capacity and technical specification.The empirical economic study of the UHV AC transmission is also conducted according to the construction and regulating performances of the UHV pilot project.Moreover,this paper presents an outlook for the commercial value of the UHV pilot project from the financial aspect.