Vietnam Dau Tieng Photovoltaic Power Station is located in Yau Tinh Reservoir, Tay Ninh Province, which is the largest lake area in southern Vietnam. With a total installed capacity of 500 megawatts, it stands as the world's largest semi-submerged photovoltaic project.

Dau Tieng PV project is characterized by its atypical water surface photovoltaic features, presenting immense scale, high technical difficulty, complex financing structure, tight schedule, constantly changing construction conditions, challenging resource organization, and intensive funding requirements. During peak construction periods, the project employed over 2,000 personnel, yet the construction period spanned only 11 months.

The semi-submerged nature of the project site, with its fluctuating water levels and uneven terrain, posed significant challenges for construction organization, installation, and scheduling. From September to February each year, during the reservoir's filling period, the entire site gradually becomes submerged, with water levels rising up to 6 meters at their peak. Moreover, the site features sloping terrain, with high and low areas dispersed throughout, requiring the team to design each pile's length according to different terrain and geological conditions.

In the face of challenging construction conditions in the water, the project team innovatively employed various construction equipment and methods to efficiently advance the project. They introduced key technologies for efficiently constructing photovoltaic areas under fluctuating water levels, utilized large-scale, highly efficient heterogeneous component technologies for the first time in a water environment, and proposed critical technologies for constructing maintenance roads in semi-submerged environments, effectively solving construction challenges.