LONGi, a China-based manufacturer of photovoltaic modules and solar technology solutions, has secured a 400 MW offshore module order from Shanghai Electric Power Co., Ltd. The order is part of Shanghai’s first 1 GW hybrid wind-solar project designed to enhance coastal renewable generation. As per LONGi, the supply began ahead of schedule in October 2025, marking a key milestone in offshore PV deployment. The project has adopted LONGi’s back-contact (BC) modules, which deliver about 40 W higher output than equivalent TOPCon models. These modules have reduced structure and foundation costs by nearly 0.15 CNY (0.021 USD) per watt under constrained marine conditions. According to tests conducted by CPVT in Yantai and CGC in Sanmen, BC modules have shown stable performance in offshore environments. The results have indicated practical advantages for integrating BC technology within large-scale hybrid renewable energy systems in China.