Li Jianwei, chief engineer of the State Power Investment Corp, said the mega-energy storage stations can ensure stable grid operations by shaving peak and modulating frequency for the power system, as power consumption during off-peak hours is at a relatively lower price.
According to the NEA, the total installed capacity of new types of energy storage projects reached 8.7 million kilowatts with an average power storage period of 2.1 hours last year, an increase of over 110 percent from the end of 2021.
New energy storage, or energy storage using new technologies, such as lithium-ion batteries, liquid flow batteries, compressed air and mechanical energy, will become an important foundation for building a new power system in China, Lin said.
Among those, lithium-ion battery energy storage took up 94.5 percent, followed by compressed air energy storage at 2 percent and flow battery energy storage at 1.6 percent, it said.
Besides Inner Mongolia, Shandong, Guangdong and Hunan provinces as well as the Ningxia Hui autonomous region are areas ranking in the first-tier group for installing new energy storage capacity in China.
It constructs, operates and maintains nuclear power, thermal power, hydro and solar power plants. The company offers services such as project management, operation and maintenance of power plants, power station engineering, project contracting and consultation solutions.
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