鑫椤储能·2025-04-01 06:19Core Viewpoint - The article highlights the significant growth in the electrochemical energy storage sector in China, with a notable increase in installed capacity and the emergence of independent storage systems as a key driver of this growth [1][2]. Group 1: Installed Capacity - In 2024, 515 new energy storage stations were put into operation, totaling 37.13 GW/90.51 GWh, representing a year-on-year growth of over 100% [9]. - The cumulative operational capacity by the end of 2024 reached 62.13 GW/141.37 GWh, accounting for 1.86% of the total installed capacity of the national power supply [9][12]. - Independent storage systems saw the most rapid growth, with an additional 23.22 GW installed in 2024, a year-on-year increase of over 150%, making up 63% of the total new installations [12][19]. Group 2: Distribution by Application - By the end of 2024, independent storage systems had a cumulative operational capacity of 34.58 GW, primarily distributed across provinces such as Shandong, Jiangsu, and Ningxia, each with over 2 GW [12][13]. - New energy storage systems had a cumulative operational capacity of 24.23 GW, mainly in Xinjiang, Inner Mongolia, and Gansu, with each province exceeding 1 GW [12][13]. Group 3: Company Distribution - The top five battery manufacturers by installed capacity include CATL, BYD, and EVE Energy, with a total energy capacity of 33.89 GWh, accounting for 69.59% of the market [34]. - The top five BMS manufacturers include GOTECH Electronics and BYD, with a total energy capacity of 27.31 GWh, representing 56.08% of the market [34]. - The top five PCS manufacturers include Sungrow Power Supply and Kehua Data, with a total power of 12.55 GW, making up 54.18% of the market [34]. Group 4: Energy Efficiency - In 2024, the average conversion efficiency of electrochemical energy storage systems was 88.75%, with a total charging energy of 8,991 GWh and total discharging energy of 7,980 GWh [48]. - The average comprehensive efficiency for grid-side storage was 81.71%, with a total net energy delivered to the grid of 174,679 GWh [48][49]. Group 5: Reliability - The overall reliability of electrochemical energy storage stations in 2024 was good, with a usable coefficient of 0.98 and no major safety incidents reported [53]. - Non-planned outages accounted for over 75% of the total outages, primarily due to issues with key equipment and system integration [53].