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**Smart meters have been developed based on the research of electronic meters. Electronic meters overcame the past shortcomings of mechanical meters, such as large data discrepancies, low reading efficiency, and difficulties in preventing electricity theft. On this basis, with the expansion of digital technology applications, smart meters have gone far beyond traditional electronic meters. They use smart chips as their core, integrating elements such as databases, operating systems, and two-way communication capabilities for reading meter readings. Additionally, they rely on communication technologies and computer technologies to enable functions such as automatic billing and power measurement. Below are the functions of smart meters as introduced by the company for measuring devices. 1. It supports variable electricity prices. Compared to traditional meters, smart meters are also programmable; they not only ensure high-accuracy power measurement but also have the capability to store and record data. It can store electrical energy information with a time stamp, and store and measure various types of electrical quantities and energy based on the previously set time differences. It supports fluctuations in real-time electricity prices, enabling electricity metering to meet the various requirements of the power grid and real-time price changes. 2. Two-way metering: Smart meters enable large-scale consumers with distributed energy storage devices and power generation equipment to make rational and economical decisions regarding electricity purchases and usage, based on real-time electricity prices, thereby reducing their electricity costs. Every family should be encouraged as much as possible to install low-carbon and efficient energy storage devices such as wind and solar power systems. People are encouraged to invest in cost-effective low-carbon and energy-saving devices such as cold storage, heat storage, and energy storage, in order to reduce the strain on the power grid. Practice has shown that by utilizing the two-way metering function of smart meters to provide users with real-time feedback on their electricity consumption, it is possible to reduce a household’s annual electricity usage by 13%–15%, as well as cut energy consumption by 3%–15% – **thereby enhancing environmental and social benefits. 3. Two-way communication function: Smart meters are equipped with built-in communication modules that enable two-way communication, allowing for back-and-forth data exchange between data centers and communication networks. Power supply companies can use smart meters to inform users of information of interest, allowing them to be aware in advance and prepare accordingly to adjust their electricity usage patterns. It is also possible to regularly provide users with information on their electricity consumption, allowing them to keep track of their usage levels in real time. When adjusting electricity prices, users can be notified in a timely manner so that they can conserve electricity and reduce the **electricity demand.