With the rapid development of my country's economy, the demand for electricity from all walks of life is increasing, and the uneven electricity consumption at different times is also becoming more and more serious. In order to alleviate the increasingly acute contradiction between power supply and demand in my country, adjust the load curve, and improve the imbalance of power consumption, fully implement the peak, flat, and valley time-of-use electricity price system, "cut peaks and fill valleys", and improve the country's power consumption efficiency. Utilizing electric power resources, the electric power departments of some provinces and cities in China have gradually introduced multi-rate electric energy meters, single phase electric meters, and two phase electric meters to charge users' electricity consumption in a time-sharing manner. In April 1995, the National Planning Commission, the State Economic and Trade Commission, and the Ministry of Electric Power Industry jointly held a decision at the National Electricity Planning Work Conference in Shanghai. It will take 3 to 4 years to plan and step by step in all major power grids across the country. Fully implement the peak-valley time-of-use price system.