Core Insights - The article provides an analysis of the energy storage bidding market for September 2025, highlighting trends in project awards and pricing dynamics [2][3]. Group 1: Market Overview - In September 2025, a total of 202 energy storage bidding segments were tracked, showing a year-on-year decrease of 6.0% but a month-on-month increase of 41.3% [4]. - Nearly 60% of the awarded segments were from EPC (Engineering, Procurement, and Construction), totaling 121 segments, which represents a year-on-year increase of 13.1% and a month-on-month increase of 89.1%, marking a new high for the year [4]. Group 2: Awarded Capacity and Trends - The awarded capacity for energy storage systems reached 5.5 GW/19.8 GWh, reflecting a year-on-year increase of 13.4%/71.5% but a month-on-month decrease of 65.1%/49.0% [6][7]. - The EPC awarded capacity was 8.8 GW/23.3 GWh, with year-on-year increases of 71.4%/100.4% and month-on-month increases of 38.3%/15.9% [6][7]. Group 3: Application Scenarios - Over 80% of the awarded capacity was for grid-side applications, with grid-side awarded capacity reaching 16.2 GWh, a year-on-year increase of 112.7% and a month-on-month increase of 43.6% [9]. - The increase in grid-side projects was driven by several large-scale independent energy storage projects in Inner Mongolia and other regions [9]. Group 4: Regional Distribution - In terms of regional distribution, Xinjiang led the country in EPC awarded capacity with 5.3 GWh, where independent storage accounted for 94.3% [11]. - Inner Mongolia also showed high activity in the energy storage bidding market, with an EPC awarded capacity of 4.3 GWh, where independent storage made up 97.7% [12]. Group 5: Pricing Dynamics - The average bidding price for 2-hour energy storage systems was 595.9 yuan/kWh, showing a year-on-year decrease of 11.9% but a month-on-month increase of 5.6% [14]. - The average bidding price for EPC (excluding PC) was 1085.8 yuan/kWh, with a year-on-year decrease of 18.0% and a month-on-month increase of 13.1% [17].

Core Viewpoint - The energy storage bidding market experienced a significant decline in both quantity and scale in July 2025, attributed to policy adjustments and project construction cycle effects, leading to a noticeable decrease in market activity compared to the same period last year [2][9]. Bidding Market - The number of bidding projects tracked was 185, a year-on-year decrease of 30.7%, with 148 projects awarded, down 34.5% year-on-year [2]. - Excluding bulk procurement, the number of energy storage system bidding segments was 46, down 45.2% year-on-year and 4.2% month-on-month; EPC (including PC) bidding segments totaled 101, down 23.5% year-on-year and 30.8% month-on-month [3]. - The bidding scale for energy storage systems was 1.6 GW/4.7 GWh, a year-on-year decrease of 20.0%/11.3% and a month-on-month decrease of 88.8%/86.3% [4]. Award Market - The number of awarded energy storage system segments was 24, a significant year-on-year decline of 79.3% and a month-on-month decrease of 7.7%; EPC awarded segments totaled 79, a slight year-on-year decrease of 1.3% and a month-on-month decrease of 14.1% [6]. - The awarded scale for energy storage systems was 1.4 GW/4.1 GWh, down 75.2%/70.5% year-on-year but up 37.3%/31.4% month-on-month; EPC awarded scale was 4.4 GW/11.4 GWh, up 42.2%/47.7% year-on-year but down 46.7%/51.3% month-on-month [6]. Award Prices - The average winning price for 0.5C energy storage systems was 471.1 yuan/kWh, down 30.2% year-on-year and 25% month-on-month, marking a historical low [10]. - The average winning price for EPC was 1023.5 yuan/kWh, down 17.8% year-on-year but up 11.7% month-on-month; the price range was between 663.8 yuan/kWh and 1691.2 yuan/kWh [11]. - The average winning price for 0.25C systems was 1096.9 yuan/kWh, up 30.2% year-on-year and 32.8% month-on-month, indicating a trend of cost optimization and improved service quality in the industry [11].