Abstract: In order to assist power enterprises in implementing the requirements of digital and intelligent construction, achieving the "dual carbon" target and digital and intelligent development of engineering construction, from the perspective of power enterprise engineering cost, based on the requirements of national and industry policies for digital and intelligent development, as well as the background of rapid development of new energy sources, this paper deeply explores the main problems in the current stage of power engineering cost; the necessity of digital empowerment of power engineering cost in the new situation is elaborated from four aspects: the inevitable trend of power engineering cost development, the need to solve existing problems, the means to improve the quality and efficiency of cost management, and the enhancement of the value of power engineering data assets. Based on the innovative practical experience of digital intelligence empowerment in the field of power engineering cost management of China Energy Group, this paper introduces the path to achieve digital intelligence development of power engineering cost management from the perspectives of digital intelligence technology exploration and digital intelligence empowerment practice, and discusses its application and economic benefits, aiming to provide reference for the digital intelligence development of engineering cost management.