Driven by science and technology, modern agriculture is constantly developing and evolving．Facility agriculture is an efficient production method to improve crop yields and crop growth environment, its power supply system energy consumption problems have gradually attracted attention．In view of facility energy consumption problems, electric power supply energy-saving technology application was explored, which was intended to realize reducing energy costs, improve energy utilization efficiency, and promote agricultural sustainable development goals．Current facilities' power-supply requirements were sorted out, energy-saving technologies' principles, applications, and technical practices such as wind-photovoltaic hybrid power supply and intelligent control were analyzed．It was found that wind-photovoltaic hybrid power supply could effectively support facility agriculture electricity consumption, reduce dependence on traditional energy sources．Intelligent control technology could accurately regulate power supply equipment operation according to crop demands, reduce energy consumption．Electric power supply energy-saving technologies' application significantly reduced facility agriculture energy consumption and improved economic benefits．Facility agriculture electric power supply energy-saving technologies could not only realize energy conservation and emission reduction but also improve agricultural production efficiency, which should be further promoted and innovated to meet modern high-efficiency agriculture development needs．