Combination multiple rate electricity meter:

In the power system, the total amount of electrical power consumed by various types of electrical equipment at a certain moment is called electrical load.

The load changes over time and can be described by a daily (or annual) load curve. When the power load increases significantly, it forms a peak load in the power grid, and when the power load decreases significantly, it forms a valley load. When the difference between the peak and valley values on the load curve is large, the capacity of the power generation and supply equipment cannot be fully utilized, and the operation is uneconomical. Many power grids in our country often experience power outages and restrictions during peak load periods; During periods of low load, there is severe waste, resulting in a large amount of water being abandoned by hydropower plants and prolonged low load operation of thermal power plants.

A multi rate electricity meter is a device that records electricity consumption during peak and off peak periods, in order to charge electricity fees at different prices. It encourages users to take proactive measures to avoid peak hours and fill in valleys, which is beneficial for both supply and demand sides.