On January 11, the energy storage units of Northwest Hubei Electric Power Company's 76MW/152MWh Energy Storage Project in Jianshi County was successfully connected to the grid at full capacity. The energy storage system adopts lithium iron phosphate battery with a service life of 10 years, which can be charged and discharged in cycles for 6000 times, and the designed annual charging capacity is about 90 million kWh.