Round Trip Efficiency (RTE) refers to the ratio of output energy to input energy in a complete charging and discharging cycle of an energy storage system, reflecting the efficiency of the system’s energy conversion and transmission.
It is commonly used in battery energy storage systems (BESS) and similar applications. It is one of the core indicators for evaluating the performance of energy storage systems. Ideally, the closer it is to 100%, the better, but in reality, it is usually between 80-95%, and the specific value depends on factors such as system architecture, battery type, thermal control efficiency, and power electronic devices.
