China’s first large-scale lithium-sodium hybrid energy storage station has recently commenced operations in Wenshan, Yunnan province. This cutting-edge facility, managed by China Southern Power Grid (Southern Grid), boasts the capacity to store a remarkable 800,000 kWh of electricity daily, catering to the energy needs of approximately 270,000 households.
The energy storage station, sprawled across an area of about 50 mu, features over 150 battery compartments and boost-converter compartments with a peak instantaneous output capacity of 200 MW. One of the key highlights of this station is its utilization of the latest high-capacity sodium-ion batteries, renowned for their rapid response speed that is six times faster than other existing sodium-ion batteries. Wang Hui, the station’s head, emphasized the significance of these advanced batteries in enhancing the overall performance of the facility.
By harnessing the combined capabilities of lithium and sodium batteries, the energy storage station aims to support over 30 wind and photovoltaic plants and stations in Yunnan. This strategic approach ensures a stable connection of a multitude of new energy sources to the grid, enabling them to engage in power market transactions efficiently. Wan Minhui, a researcher at Southern Grid’s energy storage unit, highlighted the pivotal role of the station in expanding the application scenarios of sodium-ion batteries in energy storage.
The seamless integration of lithium and sodium batteries allows the station to adapt its charging and discharging modes according to the influx of new energy sources, thereby mitigating the volatility associated with renewable energy. This flexibility proves instrumental in facilitating stable power delivery from new energy bases in regions like Tibet, Xinjiang, Gansu, and Ningxia, where significant renewable energy production takes place.
The energy storage station’s deployment of high-capacity power sodium-ion batteries by Hina Battery, a prominent Chinese power battery manufacturer, underscores the industry’s commitment to innovation and sustainability. Sodium-ion batteries have gained widespread traction in recent years owing to their abundant raw material reserves, ease of extraction, and cost-effectiveness. These batteries find extensive applications in energy storage solutions, with some electric vehicles also incorporating them for enhanced performance.
In conclusion, the successful operation of China’s first large-scale lithium-sodium hybrid energy storage station marks a significant milestone in the country’s transition towards sustainable energy solutions. With the integration of cutting-edge technologies and collaborative efforts from industry leaders, this facility sets a benchmark for future energy storage projects, paving the way for a greener and more efficient energy landscape.
