On September 9, China Electric Power Enterprise Federation released electrochemical in the first half of 2024 energy storage statistical data of power station industry. In the first half of 2024, the available coefficient of electrochemical energy storage power station reached 0.98. The average planned outage duration is 60.29h for a single planned outage of 903 times in the whole year, 901 Non-planned outage times, and 31.55h for a single average non-planned outage time. The quality problem of key equipment, system and integrated installation of the power station is the main reason for the unplanned outage of the power station, and the number of unplanned outage accounts for more than 80%.

The overall operation of new energy distribution and storage is better than that of the same period in 2023. The daily average operating hours increased from 2.05h to 3.74h, and the daily average utilization hours increased from 1.42h to 2.04h, the average daily equivalent charge-discharge times increased from 0.31 to 0.50 (equivalent to a complete charge-discharge every 2 days), and the average utilization index increased from 27% to 31%.

The overall operation of independent energy storage is better than that of the same period in 2023. The daily average operating hours increased from 2.28h to 4.09h, and the daily average utilization hours increased from 1.45h to 2.95h, the average equivalent charge-discharge times increased from 0.36 to 0.73 (equivalent to a complete charge-discharge every 1.4 days), and the average utilization index increased from 32% to 59%.

The overall operation of industrial and commercial allocation and storage is better than that of the same period in 2023. The daily average operating hours increased from 10.33h to 13.82h, and the daily average utilization hours increased from 4.61h to 5.97h, the average daily equivalent charge and discharge times are 0.79 times (equivalent to completing a complete charge and discharge every 1.3 days), and the average utilization index is increased from 50% to 58%.

According to the operation situation of electrochemical energy storage power station in the first half of 2024, it can be seen that with the iterative upgrade of energy storage technology in recent years and the overall impact of Operation life on the energy efficiency of the power station, the energy efficiency level of the new power station is relatively good, the energy retention rate is as high as over 90%.