On September 9, the China Electricity Council (CEC) released the "2024 H1 Electrochemical Energy Storage Power Station Industry Statistical Data."
According to CEC statistics, from January to June, electrochemical energy storage experienced steady growth. The 19 enterprise members of the National Electric Power Safety Committee added 142 newly commissioned power stations with a total installed capacity of 10.37 GW/24.18 GWh, a year-on-year increase of 40%. This is equivalent to 6.79% of the country's newly added power generation capacity and 8.04% of newly added renewable energy capacity.
As of June 2024, there were 1,100 operational power stations with a cumulative installed capacity of 35.37 GW/75.05 GWh (1,002 operational stations with a total installed capacity of 34.80 GW/73.88 GWh, and 98 decommissioned stations with 0.57 GW/1.16 GWh of capacity). This represents 1.15% of the country's total installed power generation capacity and 2.87% of the total installed renewable energy capacity. Additionally, there were 267 stations under construction, with a total capacity of 13.61 GW/26.66 GWh.
In terms of application scenarios, grid-side standalone energy storage saw the most rapid growth, with 6.85 GW of new capacity added, representing over 100% year-on-year growth and accounting for 66% of the newly added capacity. Energy storage paired with new energy sources on the generation side added 3.37 GW, roughly the same as in the previous year.
As of June 2024, installed capacity distribution was as follows: 44.27% for the generation side, 53.64% for the grid side, and 2.09% for the user side. The primary application scenarios were standalone energy storage and energy storage paired with renewable energy, together accounting for 92% of the total. Standalone energy storage had a cumulative installed capacity of 18.22 GW, primarily located in Shandong, Hunan, Ningxia, Guizhou, Jiangsu, and Anhui, where each province had over 1 GW of capacity. Energy storage paired with renewable energy had a cumulative installed capacity of 14.52 GW, mainly located in Xinjiang, Inner Mongolia, Gansu, and Shandong, with each province exceeding 1 GW of capacity.
In terms of operational performance, electrochemical energy storage showed improvement in the first half of 2024 compared to the same period last year. The average daily operating hours increased from 4.17h to 4.27h, the average daily utilization hours rose from 2.16h to 2.55h, and the average daily equivalent charge-discharge cycles increased from 0.58 to 0.63 (equivalent to one complete charge-discharge cycle every 1.6 days). The average utilization index improved from 34% to 42%.
Regarding storage duration by application scenario, standalone energy storage primarily had storage durations of 1 to 2 hours, accounting for 87.97% of total energy. Energy storage paired with renewable energy mainly had durations of 1 to 2 hours (61.81%) and 2 to 4 hours (29.08%). Storage paired with thermal power had storage durations primarily under 1 hour, accounting for 96.40% of total energy. For industrial and commercial users, storage durations of over 2 hours accounted for 71.51% of the total energy.
In terms of power station size, new additions from January to June were mainly large-scale stations of over 100 MW, with a total installed capacity of 7.64 GW, representing more than 100% year-on-year growth and accounting for 73.68% of the new capacity.
As of June 2024, the total installed capacity for large, medium, and small electrochemical energy storage power stations was 20.45 GW, 14.41 GW, and 0.51 GW, respectively. The proportion of large-scale stations above 100 MW increased from 23% in 2020 to 58%, indicating that electrochemical energy storage is gradually developing toward centralized and large-scale applications, with standalone energy storage accounting for over 75% of the total installed capacity of large stations.
Source：https://mp.weixin.qq.com/s/g9Ts4jF7ttrv-81Aq9gQTQ