The Rudong offshore photovoltaic-hydrogen energy storage project in Rudong county, Jiangsu province, China, has officially begun operations. This groundbreaking project is the largest of its kind in China and represents a significant milestone in the country's renewable energy efforts. The project integrates solar power generation, hydrogen production, and storage, aiming to enhance energy efficiency and reduce emissions. With a total capacity of 400MW, the project is set to generate 468 million kWh of electricity annually upon full operation in 2025. This substantial energy output is expected to save approximately 151,000 tonnes of standard coal each year and lead to significant reductions in carbon dioxide, sulfur dioxide, and nitrogen dioxide emissions. By harnessing the coastal tidal flat resources and utilizing advanced photovoltaic technology, the project not only optimizes energy conversion and storage efficiency but also improves the stability of the electricity supply in the region. The innovative approach of integrating hydrogen production through water electrolysis further enhances energy utilization efficiency and the peak-shaving capacity of the regional power grid. This project reflects China's commitment to sustainability, environmental protection, and advancing towards a more sustainable energy structure.