In terms of the construction cost of solar photovoltaic power station, with the large-scale application and promotion of solar photovoltaic power generation, especially in the case of the upstream of the crystalline silicon industry and the increasingly mature photovoltaic power generation technology, the comprehensive development and utilization of the roof, exterior wall and other platforms of the building, the construction cost of solar photovoltaic power generation per kilowatt is also decreasing, and it has the same economic advantage compared with other renewable energy sources. And with the implementation of the national parity policy, its popularity will be more widespread.