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On January 30, Guosheng Size Energy Storage Technology (Jiangsu) Co., Ltd. was established in Nanjing with a registered capital of 20 million RMB. The company is jointly owned by Grand Sunergy Co., Ltd.

(80% stake) and Grand Sunergy Tech Co., Ltd. (20% stake). Guosheng Size will focus on energy storage technology and intelligent control system integration.

As energy storage becomes essential for managing energy fluctuations, Grand Sunergy is reallocating resources to this sector to address financial pressures from its core PV business. The establishment of Guosheng Size completes Grand Sunergy's midstream capabilities, linking upstream battery components to downstream applications.