China commissions 500 MW hybrid energy storage project
Author: PPD Team Date: January 13, 2026
China has commissioned a large scale hybrid energy storage facility in the northwest of the country, marking a milestone in the use of combined battery and supercapacitor technologies for grid support.
The Jiayuguan NingSheng 500 MW/1,000 MWh independent energy storage project was connected to the grid on 30 December 2025. The project is located in Jiayuguan, Gansu province, within the Jiaxi photovoltaic industrial park, and is owned and operated by a subsidiary of the China National Nuclear Corporation (CNNC).
The facility uses a hybrid configuration combining lithium iron phosphate (LFP) batteries and supercapacitors. The system includes 475 MW/1,000 MWh of LFP battery storage and a 25 MW supercapacitor unit. The battery system is designed for longer duration storage and peak shaving, while the supercapacitor provides rapid response services such as frequency regulation and inertia support at millisecond level speeds.
With a capacity of 25 MW, the supercapacitor installation is reported to be the largest deployed in China as part of a grid scale project. The hybrid system is connected to the grid through a 330 kV transmission line at a solar power aggregation station. Construction began in September 2024 and was completed in about 15 months.
The project has been engineered for the Gobi Desert climate and is designed to operate in temperatures ranging from minus 40 degrees Celsius to 60 degrees Celsius, with dedicated cooling and protection systems.
Beyond energy shifting, the facility is configured to provide grid forming functions and to participate in electricity and ancillary services markets. China Nuclear Industry Huaxing Construction acted as the engineering, procurement, and construction contractor. Equipment was supplied by multiple vendors, including Sermatec and Herong New Energy.
The commissioning aligns with China’s broader push to scale up energy storage capacity. On 12 September 2025, China announced a national Special Action Plan to add more than 180 GW of new type energy storage by 2027. The expansion is expected to drive higher demand across the battery value chain, including cell manufacturers, system integrators, and engineering, procurement, and construction providers.
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