The Guohua Rudong PV-Hydrogen-ESS Integrated Project in Rudong County, China, has marked a milestone by achieving full-capacity grid connection and power generation. Covering 4,387.5 mu of tidal flats with a 400 MW solar capacity, the project includes various facilities like booster stations, energy storage, and hydrogen production and refueling stations. Its annual electricity generation is estimated at 4,629.34 million kWh, contributing significantly to reducing carbon emissions by 309,400 mt annually. This endeavor not only aids in local ecological protection but also promotes green, low-carbon development. The project's innovative approach to ecological governance involves the unique combination of offshore PV and weed control, setting a precedent for ecological restoration models in China. Construction challenges, such as unpredictable tidal changes, were overcome with inventive solutions like steel sheet pile cofferdams and specialized vehicles. With nearly 700,000 solar panels harmonizing with the tides, the project illuminates 200,000 households, while also propelling the growth of various industries including hydrogen energy. The project's success signifies a step forward in sustainable energy practices and local economic empowerment.