China Approves 720-MWh Battery Storage Pilot in Renewable Push

China approved its first large battery storage pilot project as it seeks to maximize clean energy output and improve grid stability.

The initial phase of the venture in the northwestern province of Gansu will require 1.2 billion yuan ($174 million) of investment and have a capacity of 720 megawatt hours and storage duration of four hours, the Gansu Provincial Development & Reform Commission said in a statement in late December. It’s expected to be completed in 2019.

The project underscores China’s efforts to balance out renewable generation that fluctuates depending on the amount of available wind or sunlight. The country’s clean generation capacity expanded to 706 gigawatts and its wind and solar curtailment rates were at 7.7 percent and 2.9 percent, respectively, as of the end of September.

Subsequent expansion of the Gansu project will depend on the needs of the grid as well as market conditions, the provincial authority said. When completed, the project will be the largest energy storage virtual power plant in China, according to the statement.

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