Pile foundation type offshore photovoltaic is a system for generating power by renewable energy sources through ocean resources, and the photovoltaic module is installed on an offshore pile foundation to effectively utilize solar energy, so that clean energy. Pile foundation type offshore photovoltaic is a system for generating power by renewable energy sources through ocean resources, and the photovoltaic module is installed on an offshore pile foundation to effectively utilize solar energy, so that clean energy. Photovoltaic (PV) power generation plays an important role in the clean energy. Placing PV on water has therefore become an interesting alternative siting solution. In this paper, the floating photovoltaic system is divided into four categories: fixed pile photovoltaic system, floating photovoltaic. As solar energy expands into more complex environments, water-area and water-adjacent solar projects —such as floating-edge PV, reservoir-side installations, canals, and wetlands—are becoming increasingly common. As the demand for renewable energy increases—solar farms are becoming. If shallow bedrock is present, the design can proactively switch from a driven pile foundation to one better suited for rock, such as concrete piers or specialized rock-drilling ground screws, avoiding costly standstills in the field. Ultimately, the geotechnical report initiates a crucial feedback. Provided are a construction method for a pile foundation of a photovoltaic support, a pile foundation, and a photovoltaic support.