China Power Construction Corporation (PowerChina) has inaugurated the world's largest grid-side electrochemical energy storage project in Chayouzhong Banner, Wulanchabu City, Inner Mongolia. The project boasts a capacity of 1 million kW/6 million kWh. Nestled at an average altitude of 1,700 meters, the site enjoys ample sunlight, with an annual sunshine duration of up to 3,014 hours. The project entails the construction of 1,200 lithium iron phosphate (LFP) battery energy storage systems, each with a capacity of 5.016 MWh. Additionally, it includes 4 main transformers with a capacity of 220 kV and one 220 kV transmission line. Leveraging LFP energy storage technology, this project will offer capabilities for frequency regulation, peak shaving, power market trading, and capacity compensation. Anticipated to achieve an annual peak shaving capacity of 2.16 billion kWh, the project is poised to tackle the issue of wind and solar curtailment in new energy bases, thereby enhancing the stability and flexibility of the power grid.