Cases

The project adopts a string-based energy storage system, with no circulation between battery clusters, fine-tuned charging and discharging management for individual clusters, modular design, and small-grained maintenance, which effectively improves operational efficiency. After calculation, the IRR of the string-based liquid-cooled energy storage system has been improved by 3% under the condition of one charge and one discharge per day for 24 years.

After the project is put into operation, it can generate 1.315 billion kilowatt-hours of green electricity throughout its lifecycle, with significant emission reduction effects. The project won the Best Power-side Application Scenario Innovation Project Award in 2023.

The project site is located at the end of the power grid, with low grid strength and limited access for new energy sources. The project adopts a modular grid-tied energy storage solution, which can provide voltage and frequency support for the grid. After the project is connected to the grid, the SCR of the regional grid has been raised from 1.3% to 1.5% and the total distortion rate has been reduced from 12.55% to 1.31%, effectively improving the grid strength and power quality. Compared with centralized systems, the cluster-level management mode of the modular system can increase the total charging and discharging capacity by 8%, making it more economical.

The first officially commercialized independent electrochemical energy storage project in Shandong Province was put into operation on September 30, 2023. The project enhances the grid's ability to adjust peak power usage in Shandong, promotes the utilization of renewable energy, alleviates the impact of coal-fired power plant peak power adjustment on the province, and is expected to generate annual revenue of 300 million yuan and tax revenue of 20 million yuan, while creating more than 100 jobs. The project won the Best Energy Storage Demonstration Project Award in 2023.