Solar energy is the only energy source that can guarantee human future needs. Photovoltaic power generation is a pure physical process that utilizes solar energy to convert photons into electrons, and the conversion process does not emit any harmful substances. According to a report by the US Department of Energy (April 2005), the world's potential water energy resources are 46TW1W=1012W, and the economically exploitable resources are only 09T of wind energy, with 2-4TW of exploitable resources; Biomass energy 3TW; Strong regularity and predictability of safe power generation using potential resources of solar energy in the sea (ease of scheduling power generation: rich production materials (silicon content in the crust ranks second), wide construction areas (deserts, buildings, etc.), large-scale production with a 25 year efficiency reduction of 20%), maintenance free, no human value cleanliness: no fuel consumption, no noise, no pollution, and short energy recovery period