Effects of irradiance and temperature on component performance
It can be seen that the output current of the module is proportional to the irradiance of sunlight. The stronger the sunlight, the higher the output power of the module. As the irradiance decreases, the shape of the volt-ampere characteristic curve is basically unchanged, but the short-circuit current gradually decreases. The open circuit voltage does not change much with irradiance.

When the temperature of the component is 25°C higher than the standard operating temperature, the efficiency of the component decreases, mainly manifested in the drop of the open circuit voltage. The shape of the volt-ampere characteristic curve does not change substantially with increasing temperature, but the entire left shift shows that the open circuit voltage decreases with increasing temperature.
The effect of shadowing on component performance
The impact on the performance of the entire module when one cell in the module is shaded. If one cell in the module is completely shaded, the power loss of the entire module may be as high as 75%. Of course there are some components that are less affected by shading than this example.