This paper uses different methods, such as normalization, linear regression analysis and other data processing methods, to evaluate and compare 11 kinds of components’ power generation characteristics in Qinghai area, which is based on several impacts, such as the points of DC power generation, efficiency of system and low light effect of the subassembly. The results show that the average daily power generation of mono-crystalline silicon PV module is the highest in 11 kinds of PV modules, which can reach 5.39kWh / kW. Traditional mono-crystalline silicon, poly-crystalline silicon photovoltaic modules generate more power than thin film type PV modules. Comparing with other photovoltaic modules, the crystalline silicon photovoltaic module has higher power generation efficiency under the same condition. Concerning 11 kinds of components, the weak light effect has little impact on the power generation.