The utilization of radio frequency identification (RFID) technology has witnessed a substantial rise in recent years, and this upward trend is expected to continue in the coming years. It is often described as an industry-changing concept, which is why continuous improvements in the technique of object identification are still needed. These enhancements are related to security, speed, and reliability of communications. RFID is frequently used in areas where a large number of things must be identified. Therefore, some problems of tag collision when many tags are transmitting their data are presented by these systems. The research presented here thoroughly analyzes and evaluates existing tag reading approaches that offer low power consumption during identification. The outcome of this work is the proposal of energy-efficient anti-collision protocol, namely HT-EEAC. By assessing the energy consumed for HT-EEAC at checkpoints, we were able to increase throughput and reduce energy consumption in our protocol. The HT-EEAC approach for updating frame size aims to enhance the energy and throughput of the EPC C1 G2 UHF RFID standard. Performance comparisons demonstrate the advantages of the strategy we propose in terms of low energy consumption per identified tag, minimal collisions, and high throughput. As a result, this method can be effectively utilized in the field of RFID systems to significantly enhance their efficiency.