China’s first large-scale deep-water offshore solar project reaches operational readiness

China has energized the booster station for its first large-scale, pile-fixed deep-water offshore photovoltaic (PV) project, signalling the operational readiness of the CGN Yantai Zhaoyuan 400 MW floating solar project. Located in Laizhou Bay, Zhaoyuan City, the project covers 6.44 square kilometres and includes 121 PV sub-arrays. It features an alternating current (AC) side-rated capacity of 400 MW and a direct current (DC) installation capacity of 539.33 MW, utilizing Grand Sunergy’s Seapower double-sided, double-glass heterojunction (HJT) solar modules.

Offshore PV projects face harsh marine conditions, including high humidity, salt spray, UV radiation, and corrosion. To withstand these challenges, Grand Sunergy developed Seapower Series HJT modules with advanced features like 210-millimeter HJT cells, double-layer coated glass, UV-resistant encapsulation film, and water-sealing butyl rubber edges. These innovations enhance the modules’ resistance to salt spray, UV light, and wind load, ensuring reliability in offshore environments.

A floating solar analysis by Wood Mackenzie highlights China’s leading role in the global floating solar market, expected to grow at a compounded annual growth rate (CAGR) of 15% over the next decade. By 2031, China, alongside Indonesia and India, is projected to account for nearly 70% of global floating photovoltaic (FPV) demand, cementing its position as a key player in the sector’s growth.