Electricity Metering 4G/LTE Gateway System is a communication system based on a cellular 4G/LTE service that enables remote metering of electrical energy. The system consists of a 4G/LTE communication device connected to a standard three-phase or single-phase electricity meter via an RS485 interface. The communication device performs periodic readout at fixed time intervals and sends the data to a remote server using a TCP session over the 4G/LTE cellular service. The device can be configured through a provided RS232 configuration interface, as well as remotely via the remote server. The system includes both software for configuration via RS232 and software for visualizing the received data. The communication protocol used is specifically designed to meet all the functional requirements of the system. Two LED indicators provide information to the user about the remote server connection status and the activity of the RS485 interface.