China's 420GWh storage boom faces quality reset as Beijing curbs overcompetition

China is tightening quality requirements and curbing excessive competition in its energy-storage sector, where capacity has reached 420GWh. The move comes as Chinese manufacturers hold a formidable share of the global market amid record capacity growth.

• China's energy-storage market is estimated at 420GWh
• Beijing is reining in overcompetition and raising quality standards
• Chinese firms hold a major share of the global storage market